RFC 4630 on Update to DirectoryString Processing in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile

rfc-editor@rfc-editor.org Thu, 31 August 2006 18:59 UTC

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Message-Id: <200608311803.k7VI3cWj019484@nit.isi.edu>
To: ietf-announce@ietf.org, rfc-dist@rfc-editor.org
Subject: RFC 4630 on Update to DirectoryString Processing in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile
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A new Request for Comments is now available in online RFC libraries.

        
        RFC 4630

        Title:      Update to DirectoryString Processing in 
                    the Internet X.509 Public Key Infrastructure 
                    Certificate and Certificate Revocation List (CRL) 
                    Profile 
        Author:     R. Housley, S. Santesson
        Status:     Standards Track
        Date:       August 2006
        Mailbox:    housley@vigilsec.com, 
                    stefans@microsoft.com
        Pages:      6
        Characters: 12539
        Updates:    RFC3280
        See-Also:   

        I-D Tag:    draft-ietf-pkix-cert-utf8-03.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4630.txt

This document updates the handling of DirectoryString in the Internet
X.509 Public Key Infrastructure Certificate and Certificate
Revocation List (CRL) Profile, which is published in RFC 3280.  The
use of UTF8String and PrintableString are the preferred encoding.
The requirement for exclusive use of UTF8String after December 31,
2003 is removed.  [STANDARDS TRACK]

This document is a product of the Public-Key Infrastructure (X.509)
Working Group of the IETF.

This is now a Proposed Standard Protocol.

STANDARDS TRACK: This document specifies an Internet standards track
protocol for the Internet community,and requests discussion and 
suggestions for improvements.Please refer to the current edition of the 
Internet Official Protocol Standards (STD 1) for the standardization 
state and status of this protocol.  Distribution of this memo is 
unlimited.

This announcement is sent to the IETF list and the RFC-DIST list.
Requests to be added to or deleted from the IETF distribution list
should be sent to IETF-REQUEST@IETF.ORG.  Requests to be
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        To: rfc-info@RFC-EDITOR.ORG
        Subject: getting rfcs

        help: ways_to_get_rfcs

Requests for special distribution should be addressed to either the
author of the RFC in question, or to RFC-Manager@RFC-EDITOR.ORG.  Unless
specifically noted otherwise on the RFC itself, all RFCs are for
unlimited distribution.

Submissions for Requests for Comments should be sent to
RFC-EDITOR@RFC-EDITOR.ORG.  Please consult RFC 2223, Instructions to RFC
Authors, for further information.


Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute

...






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Date: Thu, 31 Aug 2006 11:03:38 -0700
Message-Id: <200608311803.k7VI3cWj019484@nit.isi.edu>
To: ietf-announce@ietf.org, rfc-dist@rfc-editor.org
Subject:  RFC 4630 on Update to DirectoryString Processing in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile
From: rfc-editor@rfc-editor.org
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A new Request for Comments is now available in online RFC libraries.

        
        RFC 4630

        Title:      Update to DirectoryString Processing in 
                    the Internet X.509 Public Key Infrastructure 
                    Certificate and Certificate Revocation List (CRL) 
                    Profile 
        Author:     R. Housley, S. Santesson
        Status:     Standards Track
        Date:       August 2006
        Mailbox:    housley@vigilsec.com, 
                    stefans@microsoft.com
        Pages:      6
        Characters: 12539
        Updates:    RFC3280
        See-Also:   

        I-D Tag:    draft-ietf-pkix-cert-utf8-03.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4630.txt

This document updates the handling of DirectoryString in the Internet
X.509 Public Key Infrastructure Certificate and Certificate
Revocation List (CRL) Profile, which is published in RFC 3280.  The
use of UTF8String and PrintableString are the preferred encoding.
The requirement for exclusive use of UTF8String after December 31,
2003 is removed.  [STANDARDS TRACK]

This document is a product of the Public-Key Infrastructure (X.509)
Working Group of the IETF.

This is now a Proposed Standard Protocol.

STANDARDS TRACK: This document specifies an Internet standards track
protocol for the Internet community,and requests discussion and 
suggestions for improvements.Please refer to the current edition of the 
Internet Official Protocol Standards (STD 1) for the standardization 
state and status of this protocol.  Distribution of this memo is 
unlimited.

This announcement is sent to the IETF list and the RFC-DIST list.
Requests to be added to or deleted from the IETF distribution list
should be sent to IETF-REQUEST@IETF.ORG.  Requests to be
added to or deleted from the RFC-DIST distribution list should
be sent to RFC-DIST-REQUEST@RFC-EDITOR.ORG.

Details on obtaining RFCs via FTP or EMAIL may be obtained by sending
an EMAIL message to rfc-info@RFC-EDITOR.ORG with the message body 

help: ways_to_get_rfcs. For example:

        To: rfc-info@RFC-EDITOR.ORG
        Subject: getting rfcs

        help: ways_to_get_rfcs

Requests for special distribution should be addressed to either the
author of the RFC in question, or to RFC-Manager@RFC-EDITOR.ORG.  Unless
specifically noted otherwise on the RFC itself, all RFCs are for
unlimited distribution.

Submissions for Requests for Comments should be sent to
RFC-EDITOR@RFC-EDITOR.ORG.  Please consult RFC 2223, Instructions to RFC
Authors, for further information.


Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute

...




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Date: Thu, 31 Aug 2006 12:52:38 -0400
From: "Waterhouse, Richard" <Richard.Waterhouse@gdc4s.com>
Subject: RE: Elliptic Curve Cryptography with PKIX
In-reply-to: <7.0.0.16.2.20060831104558.03e96c18@vigilsec.com>
To: Russ Housley <housley@vigilsec.com>, Robert Zuccherato <robert.zuccherato@entrust.com>
Cc: Daniel Brown <DBrown@certicom.com>, ietf-pkix@imc.org
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I liked the approach Mr Brown was proposing some time back though I =
don't know where it stands today. I need to, for example, restrict a key =
to be used with ECMQV. (I also need to, for example, inform the other =
end that the key is based on the NIST p384 curve.)

-----Original Message-----
From: owner-ietf-pkix@mail.imc.org =
[mailto:owner-ietf-pkix@mail.imc.org]On Behalf Of Russ Housley
Sent: Thursday, August 31, 2006 10:48 AM
To: Robert Zuccherato
Cc: 'Daniel Brown'; ietf-pkix@imc.org
Subject: RE: Elliptic Curve Cryptography with PKIX


My opinion has not changed.  I believe that we need to follow the =
precedent set by RFC 4055.

In my opinion, this situation is a result of the ANSI X9 process not =
allowing public review of their draft documents.  However, I do not =
expect this policy to change.

Russ

At 10:24 AM 8/31/2006, Robert Zuccherato wrote:



It's been more than a few months now since Russ posted this message and =
I haven't seen any further discussion on the topic.  As I said back in =
April, my preference would be for PKIX to use the AlgorithmIdentifier in =
the already approved X9.62 standard, since I don't think it is helpful =
to have more than one AlgorithmIdentifier defined.

However, whatever we decide to do, I think that we should resolve the =
issue and advance the draft as quickly as possible.  Developers of ECC =
applications need to know which AlgorithmIdentifier to use. =20

Does anyone else have any opinions on this topic?  When can we hope to =
see a new ID?=20

        Robert Zuccherato.=20

> -----Original Message-----=20
> From: owner-ietf-pkix@mail.imc.org=20
> [  <mailto:owner-ietf-pkix@mail.imc.org> =
mailto:owner-ietf-pkix@mail.imc.org] On Behalf Of Russ Housley=20
> Sent: May 3, 2006 3:01 PM=20
> To: ietf-pkix@imc.org=20
> Subject: RE: Elliptic Curve Cryptography with PKIX=20
>=20
>=20
>=20
> RFC 3280 does not provide as much guidance as I would like.  Section=20
> 4.1.2.7 says the following about the  Subject Public Key Info field:=20
>=20
>     This field is used to carry the public key and identify=20
> the algorithm=20
>     with which the key is used (e.g., RSA, DSA, or=20
> Diffie-Hellman).  The=20
>     algorithm is identified using the AlgorithmIdentifier structure=20
>     specified in section 4.1.1.2.  The object identifiers for the=20
>     supported algorithms and the methods for encoding the public key=20
>     materials (public key and parameters) are specified in [PKIXALGS]. =

>=20
> Section 4.1.1.2 includes these words:=20
>=20
>     The algorithm identifier is used to identify a cryptographic=20
>     algorithm.  The OBJECT IDENTIFIER component identifies=20
> the algorithm=20
>     (such as DSA with SHA-1).  The contents of the optional parameters =

>     field will vary according to the algorithm identified.=20
>=20
> It does not really provide much guidance to developers of=20
> AlgorithmIdentifiers.=20
>=20
> I characterize the X9.62 approach as using the OBJECT IDENTIFIER to=20
> name a class of elliptic curve algorithms, and then using a portion=20
> of the parameters to list the members of that class that are=20
> acceptable for the subject public key.=20
>=20
> I am very interested to know how this fits with real implementations.=20
>=20
> My suspicion is that implementation that support key agreement are=20
> used to looking into the parameter to determine if the public key is=20
> a member of the same group.  This is needed for static-static=20
> Diffie-Hellman (in discrete log or elliptic curve).  This is also=20
> needed for MQV (and KEA, if anyone cares anymore).=20
>=20
> My suspicion is that digital signature validation does not anticipate=20
> constraints in the public key algorithm parameters.  An underlying=20
> crypto routine may need the parameters, but the signature is not=20
> going to fail because of a constraint in the parameters, which could=20
> happen in this proposed syntax.=20
>=20
> I would greatly appreciate some insight from implementors.=20
>=20
> Russ=20
>=20


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<BODY>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D005034616-31082006>I=20
liked the approach Mr Brown was proposing some time back though&nbsp;I =
don't=20
know where it stands today. I need to, for example, restrict a key to be =
used=20
with ECMQV. (I also need to, for example, inform the other end that the =
key=20
is&nbsp;based on&nbsp;the NIST p384 curve.)</SPAN></FONT></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B> =
owner-ietf-pkix@mail.imc.org=20
  [mailto:owner-ietf-pkix@mail.imc.org]<B>On Behalf Of </B>Russ=20
  Housley<BR><B>Sent:</B> Thursday, August 31, 2006 10:48 =
AM<BR><B>To:</B>=20
  Robert Zuccherato<BR><B>Cc:</B> 'Daniel Brown';=20
  ietf-pkix@imc.org<BR><B>Subject:</B> RE: Elliptic Curve Cryptography =
with=20
  PKIX<BR><BR></FONT></DIV>My opinion has not changed.&nbsp; I believe =
that we=20
  need to follow the precedent set by RFC 4055.<BR><BR>In my opinion, =
this=20
  situation is a result of the ANSI X9 process not allowing public =
review of=20
  their draft documents.&nbsp; However, I do not expect this policy to=20
  change.<BR><BR>Russ<BR><BR>At 10:24 AM 8/31/2006, Robert Zuccherato=20
  wrote:<BR><BR>
  <BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite"><FONT size=3D2>It's =
been more than=20
    a few months now since Russ posted this message and I haven't seen =
any=20
    further discussion on the topic.&nbsp; As I said back in April, my=20
    preference would be for PKIX to use the AlgorithmIdentifier in the =
already=20
    approved X9.62 standard, since I don't think it is helpful to have =
more than=20
    one AlgorithmIdentifier defined.<BR></FONT><BR><FONT =
size=3D2>However,=20
    whatever we decide to do, I think that we should resolve the issue =
and=20
    advance the draft as quickly as possible.&nbsp; Developers of ECC=20
    applications need to know which AlgorithmIdentifier to use.&nbsp;=20
    <BR></FONT><BR><FONT size=3D2>Does anyone else have any opinions on =
this=20
    topic?&nbsp; When can we hope to see a new ID?</FONT>=20
    <BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT =
size=3D2>Robert=20
    Zuccherato.</FONT> <BR><BR><FONT size=3D2>&gt; -----Original=20
    Message-----</FONT> <BR><FONT size=3D2>&gt; From: =
owner-ietf-pkix@mail.imc.org=20
    </FONT><BR><FONT size=3D2>&gt; [<A =
href=3D"mailto:owner-ietf-pkix@mail.imc.org">=20
    mailto:owner-ietf-pkix@mail.imc.org</A>] On Behalf Of Russ =
Housley</FONT>=20
    <BR><FONT size=3D2>&gt; Sent: May 3, 2006 3:01 PM</FONT> <BR><FONT =
size=3D2>&gt;=20
    To: ietf-pkix@imc.org</FONT> <BR><FONT size=3D2>&gt; Subject: RE: =
Elliptic=20
    Curve Cryptography with PKIX</FONT> <BR><FONT size=3D2>&gt; =
</FONT><BR><FONT=20
    size=3D2>&gt; </FONT><BR><FONT size=3D2>&gt; </FONT><BR><FONT =
size=3D2>&gt; RFC=20
    3280 does not provide as much guidance as I would like.&nbsp; =
Section=20
    </FONT><BR><FONT size=3D2>&gt; 4.1.2.7 says the following about =
the&nbsp;=20
    Subject Public Key Info field:</FONT> <BR><FONT size=3D2>&gt; =
</FONT><BR><FONT=20
    size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; This field is used to carry =
the public=20
    key and identify </FONT><BR><FONT size=3D2>&gt; the algorithm</FONT> =
<BR><FONT=20
    size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; with which the key is used =
(e.g., RSA,=20
    DSA, or </FONT><BR><FONT size=3D2>&gt; Diffie-Hellman).&nbsp; =
The</FONT>=20
    <BR><FONT size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; algorithm is =
identified using=20
    the AlgorithmIdentifier structure</FONT> <BR><FONT=20
    size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; specified in section =
4.1.1.2.&nbsp; The=20
    object identifiers for the</FONT> <BR><FONT=20
    size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; supported algorithms and the =
methods for=20
    encoding the public key</FONT> <BR><FONT =
size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp;=20
    materials (public key and parameters) are specified in =
[PKIXALGS].</FONT>=20
    <BR><FONT size=3D2>&gt; </FONT><BR><FONT size=3D2>&gt; Section =
4.1.1.2 includes=20
    these words:</FONT> <BR><FONT size=3D2>&gt; </FONT><BR><FONT=20
    size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; The algorithm identifier is =
used to=20
    identify a cryptographic</FONT> <BR><FONT=20
    size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; algorithm.&nbsp; The OBJECT =
IDENTIFIER=20
    component identifies </FONT><BR><FONT size=3D2>&gt; the =
algorithm</FONT>=20
    <BR><FONT size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; (such as DSA with=20
    SHA-1).&nbsp; The contents of the optional parameters</FONT> =
<BR><FONT=20
    size=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; field will vary according to =
the=20
    algorithm identified.</FONT> <BR><FONT size=3D2>&gt; =
</FONT><BR><FONT=20
    size=3D2>&gt; It does not really provide much guidance to developers =
of=20
    </FONT><BR><FONT size=3D2>&gt; AlgorithmIdentifiers.</FONT> =
<BR><FONT=20
    size=3D2>&gt; </FONT><BR><FONT size=3D2>&gt; I characterize the =
X9.62 approach=20
    as using the OBJECT IDENTIFIER to </FONT><BR><FONT size=3D2>&gt; =
name a class=20
    of elliptic curve algorithms, and then using a portion =
</FONT><BR><FONT=20
    size=3D2>&gt; of the parameters to list the members of that class =
that are=20
    </FONT><BR><FONT size=3D2>&gt; acceptable for the subject public =
key.</FONT>=20
    <BR><FONT size=3D2>&gt; </FONT><BR><FONT size=3D2>&gt; I am very =
interested to=20
    know how this fits with real implementations.</FONT> <BR><FONT =
size=3D2>&gt;=20
    </FONT><BR><FONT size=3D2>&gt; My suspicion is that implementation =
that=20
    support key agreement are </FONT><BR><FONT size=3D2>&gt; used to =
looking into=20
    the parameter to determine if the public key is </FONT><BR><FONT =
size=3D2>&gt;=20
    a member of the same group.&nbsp; This is needed for static-static=20
    </FONT><BR><FONT size=3D2>&gt; Diffie-Hellman (in discrete log or =
elliptic=20
    curve).&nbsp; This is also </FONT><BR><FONT size=3D2>&gt; needed for =
MQV (and=20
    KEA, if anyone cares anymore).</FONT> <BR><FONT size=3D2>&gt; =
</FONT><BR><FONT=20
    size=3D2>&gt; My suspicion is that digital signature validation does =
not=20
    anticipate </FONT><BR><FONT size=3D2>&gt; constraints in the public =
key=20
    algorithm parameters.&nbsp; An underlying </FONT><BR><FONT =
size=3D2>&gt;=20
    crypto routine may need the parameters, but the signature is not=20
    </FONT><BR><FONT size=3D2>&gt; going to fail because of a constraint =
in the=20
    parameters, which could </FONT><BR><FONT size=3D2>&gt; happen in =
this proposed=20
    syntax.</FONT> <BR><FONT size=3D2>&gt; </FONT><BR><FONT =
size=3D2>&gt; I would=20
    greatly appreciate some insight from implementors.</FONT> <BR><FONT=20
    size=3D2>&gt; </FONT><BR><FONT size=3D2>&gt; Russ</FONT> <BR><FONT =
size=3D2>&gt;=20
    </FONT></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>

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Date: Thu, 31 Aug 2006 12:36:34 -0400
To: ietf-pkix@imc.org
From: Russ Housley <housley@vigilsec.com>
Subject: RE: Elliptic Curve Cryptography with PKIX
In-Reply-To: <OF318DC83C.C4D7AAEE-ON852571DB.005808BD-852571DB.005928DB@ certicom.com>
References: <7.0.0.16.2.20060831104558.03e96c18@vigilsec.com> <OF318DC83C.C4D7AAEE-ON852571DB.005808BD-852571DB.005928DB@certicom.com>
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So, let's find out.&nbsp; Can developers of software that validates
certificates and digital signatures tell us how the proposed parameter
syntax would impact their code?<br><br>
Russ<br><br>
<br>
At 12:09 PM 8/31/2006, Daniel Brown wrote:<br>
<blockquote type=cite class=cite cite=""><font size=2>Russ,</font>
<br><br>
<font size=2>The X9.62 syntax follows the precedent set by 4055, in the
sense that it identifies the algorithm for which the public key is to be
used in the subject public key info field.</font> <br><br>
<font size=2>Section 3.3 of RFC 4055, item 3 in the list, clearly states
that an signature validation implementation MUST check the parameters
field of the subject public key info field algorithm identitifer when
validating a signature, i.e. to see if it conforms used the correct hash,
salt size specified in the cert.&nbsp; This seems to contradict you final
paragraph (copied below).</font> <br><br>
<font size=2>Dan Brown<br>
(905) 501-3857<br>
<a href="http://www.certicom.com/" eudora="autourl">
http://www.certicom.com</a></font> <br><br>
<tt><font face="Courier New, Courier" size=2>owner-ietf-pkix@mail.imc.org
wrote on 08/31/2006 10:47:41 AM:<br><br>
&gt; My opinion has not changed.&nbsp; I believe that we need to follow
the <br>
&gt; precedent set by RFC 4055.<br>
&gt; <br>
&gt; In my opinion, this situation is a result of the ANSI X9 process
not<br>
&gt; allowing public review of their draft documents.&nbsp; However, I do
not <br>
&gt; expect this policy to change.<br>
&gt; <br>
&gt; Russ<br>
</font></tt><br>
<tt><font face="Courier New, Courier" size=2>&gt; ...</font></tt>
<br><br>
<tt><font face="Courier New, Courier" size=2>&gt; &gt; <br>
&gt; &gt; My suspicion is that digital signature validation does not
anticipate <br>
&gt; &gt; constraints in the public key algorithm parameters.&nbsp; An
underlying <br>
&gt; &gt; crypto routine may need the parameters, but the signature is
not <br>
&gt; &gt; going to fail because of a constraint in the parameters, which
could <br>
&gt; &gt; happen in this proposed syntax. <br>
&gt; &gt; <br>
</font></tt><br>
</blockquote></body>
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Subject: RE: Elliptic Curve Cryptography with PKIX
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Russ,

The X9.62 syntax follows the precedent set by 4055, in the sense that it 
identifies the algorithm for which the public key is to be used in the 
subject public key info field.

Section 3.3 of RFC 4055, item 3 in the list, clearly states that an 
signature validation implementation MUST check the parameters field of the 
subject public key info field algorithm identitifer when validating a 
signature, i.e. to see if it conforms used the correct hash, salt size 
specified in the cert.  This seems to contradict you final paragraph 
(copied below).

Dan Brown
(905) 501-3857
http://www.certicom.com

owner-ietf-pkix@mail.imc.org wrote on 08/31/2006 10:47:41 AM:

> My opinion has not changed.  I believe that we need to follow the 
> precedent set by RFC 4055.
> 
> In my opinion, this situation is a result of the ANSI X9 process not
> allowing public review of their draft documents.  However, I do not 
> expect this policy to change.
> 
> Russ

> ...

> > 
> > My suspicion is that digital signature validation does not anticipate 
> > constraints in the public key algorithm parameters.  An underlying 
> > crypto routine may need the parameters, but the signature is not 
> > going to fail because of a constraint in the parameters, which could 
> > happen in this proposed syntax. 
> > 



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<br><font size=2 face="sans-serif">Russ,</font>
<br>
<br><font size=2 face="sans-serif">The X9.62 syntax follows the precedent
set by 4055, in the sense that it identifies the algorithm for which the
public key is to be used in the subject public key info field.</font>
<br>
<br><font size=2 face="sans-serif">Section 3.3 of RFC 4055, item 3 in the
list, clearly states that an signature validation implementation MUST check
the parameters field of the subject public key info field algorithm identitifer
when validating a signature, i.e. to see if it conforms used the correct
hash, salt size specified in the cert. &nbsp;This seems to contradict you
final paragraph (copied below).</font>
<br>
<br><font size=2 face="sans-serif">Dan Brown<br>
(905) 501-3857<br>
http://www.certicom.com</font>
<br>
<br><tt><font size=2>owner-ietf-pkix@mail.imc.org wrote on 08/31/2006 10:47:41
AM:<br>
<br>
&gt; My opinion has not changed. &nbsp;I believe that we need to follow
the <br>
&gt; precedent set by RFC 4055.<br>
&gt; <br>
&gt; In my opinion, this situation is a result of the ANSI X9 process not<br>
&gt; allowing public review of their draft documents. &nbsp;However, I
do not <br>
&gt; expect this policy to change.<br>
&gt; <br>
&gt; Russ<br>
</font></tt>
<br><tt><font size=2>&gt; ...</font></tt>
<br>
<br><tt><font size=2>&gt; &gt; <br>
&gt; &gt; My suspicion is that digital signature validation does not anticipate
<br>
&gt; &gt; constraints in the public key algorithm parameters. &nbsp;An
underlying <br>
&gt; &gt; crypto routine may need the parameters, but the signature is
not <br>
&gt; &gt; going to fail because of a constraint in the parameters, which
could <br>
&gt; &gt; happen in this proposed syntax. <br>
&gt; &gt; <br>
</font></tt>
<br>
<br>
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Date: Thu, 31 Aug 2006 10:47:41 -0400
To: Robert Zuccherato <robert.zuccherato@entrust.com>
From: Russ Housley <housley@vigilsec.com>
Subject: RE: Elliptic Curve Cryptography with PKIX
Cc: "'Daniel Brown'" <DBrown@certicom.com>, ietf-pkix@imc.org
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My opinion has not changed.&nbsp; I believe that we need to follow the
precedent set by RFC 4055.<br><br>
In my opinion, this situation is a result of the ANSI X9 process not
allowing public review of their draft documents.&nbsp; However, I do not
expect this policy to change.<br><br>
Russ<br><br>
At 10:24 AM 8/31/2006, Robert Zuccherato wrote:<br><br>
<blockquote type=cite class=cite cite=""><font size=2>It's been more than
a few months now since Russ posted this message and I haven't seen any
further discussion on the topic.&nbsp; As I said back in April, my
preference would be for PKIX to use the AlgorithmIdentifier in the
already approved X9.62 standard, since I don't think it is helpful to
have more than one AlgorithmIdentifier defined.<br>
</font><br>
<font size=2>However, whatever we decide to do, I think that we should
resolve the issue and advance the draft as quickly as possible.&nbsp;
Developers of ECC applications need to know which AlgorithmIdentifier to
use.&nbsp; <br>
</font><br>
<font size=2>Does anyone else have any opinions on this topic?&nbsp; When
can we hope to see a new ID?</font> <br><br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <font size=2>Robert
Zuccherato.</font> <br><br>
<font size=2>&gt; -----Original Message-----</font> <br>
<font size=2>&gt; From: owner-ietf-pkix@mail.imc.org </font><br>
<font size=2>&gt;
[<a href="mailto:owner-ietf-pkix@mail.imc.org">
mailto:owner-ietf-pkix@mail.imc.org</a>] On Behalf Of Russ Housley</font>
<br>
<font size=2>&gt; Sent: May 3, 2006 3:01 PM</font> <br>
<font size=2>&gt; To: ietf-pkix@imc.org</font> <br>
<font size=2>&gt; Subject: RE: Elliptic Curve Cryptography with
PKIX</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; </font><br>
<font size=2>&gt; </font><br>
<font size=2>&gt; RFC 3280 does not provide as much guidance as I would
like.&nbsp; Section </font><br>
<font size=2>&gt; 4.1.2.7 says the following about the&nbsp; Subject
Public Key Info field:</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; This field is used to carry the
public key and identify </font><br>
<font size=2>&gt; the algorithm</font> <br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; with which the key is used
(e.g., RSA, DSA, or </font><br>
<font size=2>&gt; Diffie-Hellman).&nbsp; The</font> <br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; algorithm is identified using
the AlgorithmIdentifier structure</font> <br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; specified in section
4.1.1.2.&nbsp; The object identifiers for the</font> <br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; supported algorithms and the
methods for encoding the public key</font> <br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; materials (public key and
parameters) are specified in [PKIXALGS].</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; Section 4.1.1.2 includes these words:</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; The algorithm identifier is
used to identify a cryptographic</font> <br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; algorithm.&nbsp; The OBJECT
IDENTIFIER component identifies </font><br>
<font size=2>&gt; the algorithm</font> <br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; (such as DSA with SHA-1).&nbsp;
The contents of the optional parameters</font> <br>
<font size=2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; field will vary according to
the algorithm identified.</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; It does not really provide much guidance to developers
of </font><br>
<font size=2>&gt; AlgorithmIdentifiers.</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; I characterize the X9.62 approach as using the OBJECT
IDENTIFIER to </font><br>
<font size=2>&gt; name a class of elliptic curve algorithms, and then
using a portion </font><br>
<font size=2>&gt; of the parameters to list the members of that class
that are </font><br>
<font size=2>&gt; acceptable for the subject public key.</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; I am very interested to know how this fits with real
implementations.</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; My suspicion is that implementation that support key
agreement are </font><br>
<font size=2>&gt; used to looking into the parameter to determine if the
public key is </font><br>
<font size=2>&gt; a member of the same group.&nbsp; This is needed for
static-static </font><br>
<font size=2>&gt; Diffie-Hellman (in discrete log or elliptic
curve).&nbsp; This is also </font><br>
<font size=2>&gt; needed for MQV (and KEA, if anyone cares
anymore).</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; My suspicion is that digital signature validation does
not anticipate </font><br>
<font size=2>&gt; constraints in the public key algorithm
parameters.&nbsp; An underlying </font><br>
<font size=2>&gt; crypto routine may need the parameters, but the
signature is not </font><br>
<font size=2>&gt; going to fail because of a constraint in the
parameters, which could </font><br>
<font size=2>&gt; happen in this proposed syntax.</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; I would greatly appreciate some insight from
implementors.</font> <br>
<font size=2>&gt; </font><br>
<font size=2>&gt; Russ</font> <br>
<font size=2>&gt; </font></blockquote></body>
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To: "'Russ Housley'" <housley@vigilsec.com>, ietf-pkix@imc.org
Cc: "'Daniel Brown'" <DBrown@certicom.com>
Subject: RE: Elliptic Curve Cryptography with PKIX
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It's been more than a few months now since Russ posted this message and I
haven't seen any further discussion on the topic.  As I said back in April,
my preference would be for PKIX to use the AlgorithmIdentifier in the
already approved X9.62 standard, since I don't think it is helpful to have
more than one AlgorithmIdentifier defined.

However, whatever we decide to do, I think that we should resolve the issue
and advance the draft as quickly as possible.  Developers of ECC
applications need to know which AlgorithmIdentifier to use.  

Does anyone else have any opinions on this topic?  When can we hope to see a
new ID?

	Robert Zuccherato.

> -----Original Message-----
> From: owner-ietf-pkix@mail.imc.org 
> [mailto:owner-ietf-pkix@mail.imc.org] On Behalf Of Russ Housley
> Sent: May 3, 2006 3:01 PM
> To: ietf-pkix@imc.org
> Subject: RE: Elliptic Curve Cryptography with PKIX
> 
> 
> 
> RFC 3280 does not provide as much guidance as I would like.  Section 
> 4.1.2.7 says the following about the  Subject Public Key Info field:
> 
>     This field is used to carry the public key and identify 
> the algorithm
>     with which the key is used (e.g., RSA, DSA, or 
> Diffie-Hellman).  The
>     algorithm is identified using the AlgorithmIdentifier structure
>     specified in section 4.1.1.2.  The object identifiers for the
>     supported algorithms and the methods for encoding the public key
>     materials (public key and parameters) are specified in [PKIXALGS].
> 
> Section 4.1.1.2 includes these words:
> 
>     The algorithm identifier is used to identify a cryptographic
>     algorithm.  The OBJECT IDENTIFIER component identifies 
> the algorithm
>     (such as DSA with SHA-1).  The contents of the optional parameters
>     field will vary according to the algorithm identified.
> 
> It does not really provide much guidance to developers of 
> AlgorithmIdentifiers.
> 
> I characterize the X9.62 approach as using the OBJECT IDENTIFIER to 
> name a class of elliptic curve algorithms, and then using a portion 
> of the parameters to list the members of that class that are 
> acceptable for the subject public key.
> 
> I am very interested to know how this fits with real implementations.
> 
> My suspicion is that implementation that support key agreement are 
> used to looking into the parameter to determine if the public key is 
> a member of the same group.  This is needed for static-static 
> Diffie-Hellman (in discrete log or elliptic curve).  This is also 
> needed for MQV (and KEA, if anyone cares anymore).
> 
> My suspicion is that digital signature validation does not anticipate 
> constraints in the public key algorithm parameters.  An underlying 
> crypto routine may need the parameters, but the signature is not 
> going to fail because of a constraint in the parameters, which could 
> happen in this proposed syntax.
> 
> I would greatly appreciate some insight from implementors.
> 
> Russ
> 

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<P><FONT SIZE=3D2>It's been more than a few months now since Russ =
posted this message and I haven't seen any further discussion on the =
topic.&nbsp; As I said back in April, my preference would be for PKIX =
to use the AlgorithmIdentifier in the already approved X9.62 standard, =
since I don't think it is helpful to have more than one =
AlgorithmIdentifier defined.</FONT></P>

<P><FONT SIZE=3D2>However, whatever we decide to do, I think that we =
should resolve the issue and advance the draft as quickly as =
possible.&nbsp; Developers of ECC applications need to know which =
AlgorithmIdentifier to use.&nbsp; </FONT></P>

<P><FONT SIZE=3D2>Does anyone else have any opinions on this =
topic?&nbsp; When can we hope to see a new ID?</FONT>
</P>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=3D2>Robert =
Zuccherato.</FONT>
</P>

<P><FONT SIZE=3D2>&gt; -----Original Message-----</FONT>
<BR><FONT SIZE=3D2>&gt; From: owner-ietf-pkix@mail.imc.org </FONT>
<BR><FONT SIZE=3D2>&gt; [<A =
HREF=3D"mailto:owner-ietf-pkix@mail.imc.org">mailto:owner-ietf-pkix@mail=
.imc.org</A>] On Behalf Of Russ Housley</FONT>
<BR><FONT SIZE=3D2>&gt; Sent: May 3, 2006 3:01 PM</FONT>
<BR><FONT SIZE=3D2>&gt; To: ietf-pkix@imc.org</FONT>
<BR><FONT SIZE=3D2>&gt; Subject: RE: Elliptic Curve Cryptography with =
PKIX</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; RFC 3280 does not provide as much guidance as I =
would like.&nbsp; Section </FONT>
<BR><FONT SIZE=3D2>&gt; 4.1.2.7 says the following about the&nbsp; =
Subject Public Key Info field:</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; This field is used to =
carry the public key and identify </FONT>
<BR><FONT SIZE=3D2>&gt; the algorithm</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; with which the key is =
used (e.g., RSA, DSA, or </FONT>
<BR><FONT SIZE=3D2>&gt; Diffie-Hellman).&nbsp; The</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; algorithm is identified =
using the AlgorithmIdentifier structure</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; specified in section =
4.1.1.2.&nbsp; The object identifiers for the</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; supported algorithms =
and the methods for encoding the public key</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; materials (public key =
and parameters) are specified in [PKIXALGS].</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; Section 4.1.1.2 includes these words:</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; The algorithm =
identifier is used to identify a cryptographic</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; algorithm.&nbsp; The =
OBJECT IDENTIFIER component identifies </FONT>
<BR><FONT SIZE=3D2>&gt; the algorithm</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; (such as DSA with =
SHA-1).&nbsp; The contents of the optional parameters</FONT>
<BR><FONT SIZE=3D2>&gt;&nbsp;&nbsp;&nbsp;&nbsp; field will vary =
according to the algorithm identified.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; It does not really provide much guidance to =
developers of </FONT>
<BR><FONT SIZE=3D2>&gt; AlgorithmIdentifiers.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; I characterize the X9.62 approach as using the =
OBJECT IDENTIFIER to </FONT>
<BR><FONT SIZE=3D2>&gt; name a class of elliptic curve algorithms, and =
then using a portion </FONT>
<BR><FONT SIZE=3D2>&gt; of the parameters to list the members of that =
class that are </FONT>
<BR><FONT SIZE=3D2>&gt; acceptable for the subject public key.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; I am very interested to know how this fits with =
real implementations.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; My suspicion is that implementation that =
support key agreement are </FONT>
<BR><FONT SIZE=3D2>&gt; used to looking into the parameter to determine =
if the public key is </FONT>
<BR><FONT SIZE=3D2>&gt; a member of the same group.&nbsp; This is =
needed for static-static </FONT>
<BR><FONT SIZE=3D2>&gt; Diffie-Hellman (in discrete log or elliptic =
curve).&nbsp; This is also </FONT>
<BR><FONT SIZE=3D2>&gt; needed for MQV (and KEA, if anyone cares =
anymore).</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; My suspicion is that digital signature =
validation does not anticipate </FONT>
<BR><FONT SIZE=3D2>&gt; constraints in the public key algorithm =
parameters.&nbsp; An underlying </FONT>
<BR><FONT SIZE=3D2>&gt; crypto routine may need the parameters, but the =
signature is not </FONT>
<BR><FONT SIZE=3D2>&gt; going to fail because of a constraint in the =
parameters, which could </FONT>
<BR><FONT SIZE=3D2>&gt; happen in this proposed syntax.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; I would greatly appreciate some insight from =
implementors.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; Russ</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
</P>

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Subject: Withdrawing 1998 edition of Directory Specification
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ISO is planning to withdraw the 1998 version (3rd edition) of the
Directory specification.

This has already been done by ITU and ISO now request input on whether
it would be OK for them to do the same.

With 2005 version available, the two latest versions will be maintained
even though the 1998 version is withdrawn.

Does anyone on this list have any reason to object to this?


Stefan Santesson
Senior Program Manager
Windows Security, Standards






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<DIV>Hi,</DIV>
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right" face=3DArial> y </FONT></P><P>source  of  nourishment for all. =
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baked<BR></P></BODY></HTML>
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In-Reply-To: <44EE17F4.5060403@nist.gov>
To: "David A. Cooper" <david.cooper@nist.gov>
Cc: pkix <ietf-pkix@imc.org>
MIME-Version: 1.0
Subject: Re: Confusion about encoding of attributes that use the DirectoryString type
X-Mailer: Lotus Notes Release 7.0 HF144 February 01, 2006
From: Tom Gindin <tgindin@us.ibm.com>
Message-ID: <OFF3FE4A24.663EA901-ON852571D5.007EDC40-852571D5.007F433B@us.ibm.com>
Date: Fri, 25 Aug 2006 19:10:25 -0400
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        David:

        Does it make sense to point out that the DirectoryString rules 
apply to all CHOICES containing both TeletexString and BMPString as types? 
 Both Teletex and BMP appear inside CHOICES which don't contain the other 
one, but they only appear together in DirectoryString's AFAIK.

                Tom Gindin






"David A. Cooper" <david.cooper@nist.gov>
Sent by: owner-ietf-pkix@mail.imc.org
08/24/2006 05:19 PM
 
        To:     pkix <ietf-pkix@imc.org>
        cc: 
        Subject:        Confusion about encoding of attributes that use 
the DirectoryString type



All,

It has come to the 3280bis design team's attention that there has been 
considerable confusing with respect the the rules in RFC 3280 (and 
3280bis) about the choice of string type to use when encoding attributes 
of type DirectoryString.  The source of the confusion is the syntax used 
in Appendix A of RFC 3280 (and 3280bis) to describe attributes that use 
the DirectoryString encoding.  For example, the common name attribute 
appears in Appendix A as:

      -- Naming attributes of type X520CommonName

      id-at-commonName        AttributeType ::= { id-at 3 }

      X520CommonName ::= CHOICE {
            teletexString     TeletexString   (SIZE (1..ub-common-name)),
            printableString   PrintableString (SIZE (1..ub-common-name)),
            universalString   UniversalString (SIZE (1..ub-common-name)),
            utf8String        UTF8String      (SIZE (1..ub-common-name)),
            bmpString         BMPString       (SIZE (1..ub-common-name)) }

The editors of RFC 3280 (and RFC 2459) chose to use this syntax so that 
the size constraints could be included in the ASN.1 without the need to 
use a parameterized type definition.  The X.520 definition of 
DirectoryString includes a parameter that can be used to specify the 
maximum allowable string length and the definition of each attribute 
instantiates that parameter with the maximum allowable string length for 
that attribute.  Since not all ASN.1 compilers can process parameterized 
type definitions, the PKIX profile uses the syntax show above, which has 
the same encoding and semantics as the syntax used in X.520 but is 
easier for ASN.1 compilers to process.

The problem with the syntax used in Appendix A of RFC 3280 is that the 
word "DirectoryString" does not appear.  So, many people were unaware 
that attributes such as common name used the DirectoryString type and so 
did not know that the rules in section 4.1.2.4 for the encoding of 
attributes that used the DirectoryString type applied to these attributes.

The 3280bis design team has discussed this issue and agrees that the 
ASN.1 in Appendix A should not be changed since using the syntax from 
X.520 would result in incompatibility with some ASN.1 compilers. 
Instead, the design team recommends adding comments into the ASN.1 
module prior to the definition of each attribute that uses the 
DirectoryString type that clarifies that the attribute uses the 
DirectoryString type.  A new paragraph can also be added to Appendix B 
(ASN.1 Notes) explaining the situation.

Below is a portion of Appendix A with additional comments added for the 
attributes types shown as well as the new paragraph proposed for Appendix 
B.

      -- Naming attributes of type X520name

      id-at-name                AttributeType ::= { id-at 41 }
      id-at-surname             AttributeType ::= { id-at  4 }
      id-at-givenName           AttributeType ::= { id-at 42 }
      id-at-initials            AttributeType ::= { id-at 43 }
      id-at-generationQualifier AttributeType ::= { id-at 44 }

      -- Naming attributes of type X520Name:
      --     X520name ::= DirectoryString (SIZE (1..ub-name))
      --
      -- Expanded to avoid parameterized type:
      X520name ::= CHOICE {
            teletexString     TeletexString   (SIZE (1..ub-name)),
            printableString   PrintableString (SIZE (1..ub-name)),
            universalString   UniversalString (SIZE (1..ub-name)),
            utf8String        UTF8String      (SIZE (1..ub-name)),
            bmpString         BMPString       (SIZE (1..ub-name)) }

      -- Naming attributes of type X520CommonName

      id-at-commonName        AttributeType ::= { id-at 3 }

      -- Naming attributes of type X520CommonName:
      --     X520CommonName :== DirectoryName (SIZE (1..ub-common-name))
      --
      -- Expanded to avoid parameterized type:
      X520CommonName ::= CHOICE {
            teletexString     TeletexString   (SIZE (1..ub-common-name)),
            printableString   PrintableString (SIZE (1..ub-common-name)),
            universalString   UniversalString (SIZE (1..ub-common-name)),
            utf8String        UTF8String      (SIZE (1..ub-common-name)),
            bmpString         BMPString       (SIZE (1..ub-common-name)) }



The following paragraph is proposed for inclusion in Appendix B:

      For many of the attribute types defined in [X.520], the 
AttributeValue uses
      the DirectoryString type.  Of the attributes specified in Appendix 
A, the name,
      surname, givenName, initials, generationQualifier, commonName, 
localityName,
      stateOrProvinceName, organizationName, organizationalUnitName, 
title, and
      pseudonym attributes all use the DirectoryString type.  X.520 uses 
a parameterized
      type definition [X.683] of DirectoryString to specify the syntax 
for each of these
      attributes.  The parameter is used to indicate the maximum string 
length allowed for
      the attribute.  In Appendix A, in order to avoid the use of 
parameterized type
      definitions, the DirectoryString type written in its expanded form 
for the definition
      of each of these attribute types.  So, the ASN.1 in Appendix A 
describes the syntax
      for each of these attributes as being a CHOICE of TeletexString, 
PrintableString,
      UniversalString, UTF8String, and BMPString, with the appropriate 
constraints on
      the string length applied to each of types in the CHOICE, rather 
than using the
      ASN.1 type DirectoryString to describe the syntax.





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To: "David A. Cooper" <david.cooper@nist.gov>
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Subject: Re: Inconsistencies between RFC 3280 and X.509/X.520
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David,

The annex of X.520 in which ub-name and the other upper bounds are defined has
always been non-normative. The particular values to which the upper bounds are
set are merely suggestions, and implementations are free to set whatever upper
bounds they like. Thus RFC 3280 is not incorrect in setting ub-name to
something other than 64.

Regards,
Steven

David A. Cooper wrote:
> 
> All,
> 
> In researching the confusion related to RFC 3280's description of the 
> encoding of attributes that use the DirectoryString type, I encountered 
> two places in the ASN.1 modules in RFC 3280 (and 3280bis) that are 
> inconsistent with either X.509 or X.520.  (I have not thoroughly 
> compared these documents, so I cannot guarantee that there are not any 
> other inconsistencies.)
> 
> First, in X.520 the value of ub-name is 64 whereas in RFC 3280 the value 
> of ub-name is 32768.  ub-name is used to specify the maximum length of 
> the following attributes: name, surname, givenName, initial, and 
> generationQualifier.
> 
> Second, X.509 defines EDIParty as:
> 
>      EDIPartyName ::= SEQUENCE {
>          nameAssigner [0] DirectoryString {ub-name} OPTIONAL,
>          partyName      [1] DirectoryString {ub-name} }
> 
> whereas RFC 3280 defines EDIParty as
> 
>      EDIPartyName ::= SEQUENCE {
>           nameAssigner          [0]     DirectoryString OPTIONAL,
>           partyName               [1]     DirectoryString }
> 
> So, in X.509 there is a size constraint on both the nameAssigner and 
> partyName strings (they must be between 1 and 64 characters).  In RFC 
> 3280, there is no constraint on the length of the strings.
> 
> I would like to modify 3280bis so that it is consistent with X.509 and 
> X.520.  However, since the ASN.1 that appears in 3280bis is the same as 
> the ASN.1 in RFC 3280 and RFC 2459, I want to ensure that changing these 
> items to be consistent with X.509 and X.520 will not cause any backwards 
> compatibility issues.
> 
> So, I would like to know if changing the ASN.1 in 3280bis would cause 
> problems for any existing implementations.  For example, if there are 
> systems that use the attributes mentioned above with string lengths that 
> violate length constraints in X.520.
> 
> Thanks,
> 
> Dave
> 
> 



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Subject: 3280 Bis: Initial Values for Permitted and Excluded Subtrees
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All,

=20

The new version of X.509 (2005 Edition) permits initial values other
than infinity and null for permitted and excluded subtrees respectively.

=20

Should we also revise 3280Bis to include these options so that the
relying parties can constrain the trust anchors?

=20

I would consider infinity and null values only for the two respective
fields still compliant with the applicable standard.

=20

Thanks in advance for your opinion.

Santosh Chokhani=20
Orion Security Solutions, Inc.=20
1489 Chain Bridge Road, Suite 300=20
McLean, Virginia 22101=20
(703) 917-0060  Ext. 35 (voice)=20
(703) 917-0260 (Fax)=20
chokhani@orionsec.com=20
Visit our Web site=20
http://www.orionsec.com <http://www.orionsec.com> =20

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<div class=3DSection1>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'>All,<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'>The
new version of X.509 (2005 Edition) permits initial values other than =
infinity
and null for permitted and excluded subtrees =
respectively.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'>Should
we also revise 3280Bis to include these options so that the relying =
parties can
constrain the trust anchors?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'>I
would consider infinity and null values only for the two respective =
fields
still compliant with the applicable =
standard.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'>Thanks
in advance for your opinion.<o:p></o:p></span></font></p>

<p><st1:PersonName w:st=3D"on"><font size=3D2 face=3DArial><span =
style=3D'font-size:
 10.0pt;font-family:Arial'>Santosh =
Chokhani</span></font></st1:PersonName> <br>
<font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>Orion
Security Solutions, Inc.</span></font> <br>
<st1:address w:st=3D"on"><st1:Street w:st=3D"on"><font size=3D2 =
face=3DArial><span
  style=3D'font-size:10.0pt;font-family:Arial'>1489 Chain Bridge Road, =
Suite 300</span></font></st1:Street>
 <br>
<st1:City w:st=3D"on"><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
  font-family:Arial'>McLean</span></font></st1:City><font size=3D2 =
face=3DArial><span
 style=3D'font-size:10.0pt;font-family:Arial'>, <st1:State =
w:st=3D"on">Virginia</st1:State>
 <st1:PostalCode =
w:st=3D"on">22101</st1:PostalCode></span></font></st1:address> <br>
<font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>(703)</span></font>
<font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>917-0060</span></font>&nbsp;=
<font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'> <font
color=3Dred><span style=3D'color:red'>Ext. =
35</span></font></span></font> <font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>(voice)</span></font>
<br>
<font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>(703)</span></font>
<font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>917-0260
(Fax)</span></font> <br>
<st1:PersonName w:st=3D"on"><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
 font-family:Arial'>chokhani@orionsec.com</span></font></st1:PersonName> =
<br>
<font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>Visit
our Web site</span></font> <br>
<a href=3D"http://www.orionsec.com"><font size=3D2 face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>http://www.orionsec.com</spa=
n></font></a>
<o:p></o:p></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt'><o:p>&nbsp;</o:p></span></font></p>

</div>

</body>

</html>

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Date: Thu, 24 Aug 2006 17:42:10 -0400
From: "David A. Cooper" <david.cooper@nist.gov>
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To: pkix <ietf-pkix@imc.org>
Subject: Inconsistencies between RFC 3280 and X.509/X.520
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All,

In researching the confusion related to RFC 3280's description of the 
encoding of attributes that use the DirectoryString type, I encountered 
two places in the ASN.1 modules in RFC 3280 (and 3280bis) that are 
inconsistent with either X.509 or X.520.  (I have not thoroughly 
compared these documents, so I cannot guarantee that there are not any 
other inconsistencies.)

First, in X.520 the value of ub-name is 64 whereas in RFC 3280 the value 
of ub-name is 32768.  ub-name is used to specify the maximum length of 
the following attributes: name, surname, givenName, initial, and 
generationQualifier.

Second, X.509 defines EDIParty as:

      EDIPartyName ::= SEQUENCE {
          nameAssigner [0] DirectoryString {ub-name} OPTIONAL,
          partyName      [1] DirectoryString {ub-name} }

whereas RFC 3280 defines EDIParty as

      EDIPartyName ::= SEQUENCE {
           nameAssigner          [0]     DirectoryString OPTIONAL,
           partyName               [1]     DirectoryString }

So, in X.509 there is a size constraint on both the nameAssigner and 
partyName strings (they must be between 1 and 64 characters).  In RFC 
3280, there is no constraint on the length of the strings.

I would like to modify 3280bis so that it is consistent with X.509 and 
X.520.  However, since the ASN.1 that appears in 3280bis is the same as 
the ASN.1 in RFC 3280 and RFC 2459, I want to ensure that changing these 
items to be consistent with X.509 and X.520 will not cause any backwards 
compatibility issues.

So, I would like to know if changing the ASN.1 in 3280bis would cause 
problems for any existing implementations.  For example, if there are 
systems that use the attributes mentioned above with string lengths that 
violate length constraints in X.520.

Thanks,

Dave



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All,

It has come to the 3280bis design team's attention that there has been 
considerable confusing with respect the the rules in RFC 3280 (and 
3280bis) about the choice of string type to use when encoding attributes 
of type DirectoryString.  The source of the confusion is the syntax used 
in Appendix A of RFC 3280 (and 3280bis) to describe attributes that use 
the DirectoryString encoding.  For example, the common name attribute 
appears in Appendix A as:

      -- Naming attributes of type X520CommonName

      id-at-commonName        AttributeType ::= { id-at 3 }

      X520CommonName ::= CHOICE {
            teletexString     TeletexString   (SIZE (1..ub-common-name)),
            printableString   PrintableString (SIZE (1..ub-common-name)),
            universalString   UniversalString (SIZE (1..ub-common-name)),
            utf8String        UTF8String      (SIZE (1..ub-common-name)),
            bmpString         BMPString       (SIZE (1..ub-common-name)) }

The editors of RFC 3280 (and RFC 2459) chose to use this syntax so that 
the size constraints could be included in the ASN.1 without the need to 
use a parameterized type definition.  The X.520 definition of 
DirectoryString includes a parameter that can be used to specify the 
maximum allowable string length and the definition of each attribute 
instantiates that parameter with the maximum allowable string length for 
that attribute.  Since not all ASN.1 compilers can process parameterized 
type definitions, the PKIX profile uses the syntax show above, which has 
the same encoding and semantics as the syntax used in X.520 but is 
easier for ASN.1 compilers to process.

The problem with the syntax used in Appendix A of RFC 3280 is that the 
word "DirectoryString" does not appear.  So, many people were unaware 
that attributes such as common name used the DirectoryString type and so 
did not know that the rules in section 4.1.2.4 for the encoding of 
attributes that used the DirectoryString type applied to these attributes.

The 3280bis design team has discussed this issue and agrees that the 
ASN.1 in Appendix A should not be changed since using the syntax from 
X.520 would result in incompatibility with some ASN.1 compilers.  
Instead, the design team recommends adding comments into the ASN.1 
module prior to the definition of each attribute that uses the 
DirectoryString type that clarifies that the attribute uses the 
DirectoryString type.  A new paragraph can also be added to Appendix B 
(ASN.1 Notes) explaining the situation.

Below is a portion of Appendix A with additional comments added for the 
attributes types shown as well as the new paragraph proposed for Appendix B.

      -- Naming attributes of type X520name

      id-at-name                AttributeType ::= { id-at 41 }
      id-at-surname             AttributeType ::= { id-at  4 }
      id-at-givenName           AttributeType ::= { id-at 42 }
      id-at-initials            AttributeType ::= { id-at 43 }
      id-at-generationQualifier AttributeType ::= { id-at 44 }

      -- Naming attributes of type X520Name:
      --     X520name ::= DirectoryString (SIZE (1..ub-name))
      --
      -- Expanded to avoid parameterized type:
      X520name ::= CHOICE {
            teletexString     TeletexString   (SIZE (1..ub-name)),
            printableString   PrintableString (SIZE (1..ub-name)),
            universalString   UniversalString (SIZE (1..ub-name)),
            utf8String        UTF8String      (SIZE (1..ub-name)),
            bmpString         BMPString       (SIZE (1..ub-name)) }

      -- Naming attributes of type X520CommonName

      id-at-commonName        AttributeType ::= { id-at 3 }

      -- Naming attributes of type X520CommonName:
      --     X520CommonName :== DirectoryName (SIZE (1..ub-common-name))
      --
      -- Expanded to avoid parameterized type:
      X520CommonName ::= CHOICE {
            teletexString     TeletexString   (SIZE (1..ub-common-name)),
            printableString   PrintableString (SIZE (1..ub-common-name)),
            universalString   UniversalString (SIZE (1..ub-common-name)),
            utf8String        UTF8String      (SIZE (1..ub-common-name)),
            bmpString         BMPString       (SIZE (1..ub-common-name)) }



The following paragraph is proposed for inclusion in Appendix B:

      For many of the attribute types defined in [X.520], the 
AttributeValue uses
      the DirectoryString type.  Of the attributes specified in Appendix 
A, the name,
      surname, givenName, initials, generationQualifier, commonName, 
localityName,
      stateOrProvinceName, organizationName, organizationalUnitName, 
title, and
      pseudonym attributes all use the DirectoryString type.  X.520 uses 
a parameterized
      type definition [X.683] of DirectoryString to specify the syntax 
for each of these
      attributes.  The parameter is used to indicate the maximum string 
length allowed for
      the attribute.  In Appendix A, in order to avoid the use of 
parameterized type
      definitions, the DirectoryString type written in its expanded form 
for the definition
      of each of these attribute types.  So, the ASN.1 in Appendix A 
describes the syntax
      for each of these attributes as being a CHOICE of TeletexString, 
PrintableString,
      UniversalString, UTF8String, and BMPString, with the appropriate 
constraints on
      the string length applied to each of types in the CHOICE, rather 
than using the
      ASN.1 type DirectoryString to describe the syntax.



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From: "Julien Stern" <julien.stern@cryptolog.com>
Date: Wed, 23 Aug 2006 18:25:40 +0200
To: ietf-pkix@imc.org
Subject: Re: Clarifications on SubjectAltNameExtension handling in RFC3280 / X509
Message-ID: <20060823162539.GK5344@cryptolog.com>
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David,

many thanks for your prompt and clear replies.

A few more question are in-line.

Regards,

--
Julien

On Wed, Aug 23, 2006 at 11:24:09AM -0400, David A. Cooper wrote:
> Julien,
> 
> See responses in-line.
> 
> Dave
> 
> Julien Stern wrote:
> >Folks,
> >
> >Sorry to bother if the topic is very familiar to some of you,
> >but I failed to find definitive answers in the RFCs or in X.509.
> >
> >I'd be quite interested to have some clarifications regarding
> >the handling of entity names in RFC3280 (or sonof) and X.509.
>
> [snipped crystal clear explanation on entity names]

> >Also, do RFC3280 and X.509 really have the same semantic on that matter? 
> >Is RFC3280 putting additional constraints (Trust Anchors?) on the match?
>
> There is no difference between RFC 3280 and X.509 on this matter.  
> 3280bis does impose the constraint that a certification path and the 
> path used to validate a CRL that provides status information for a 
> certificate in the path begin with the same trust anchor.  This rule was 
> included in 3280bis to protect against the risk that two different 
> entities might issue certificates and/or CRLs under the same name.  This 
> would be a violation of both 3280bis and X.509, since it would violate 
> the rule that any name within a PKI unambiguously identity one entity, 
> but there is no way (other than by vigilance) to ensure that it won't 
> happen.  So, the additional rule in 3280bis is to minimize the risk in 
> the case that a PKI operates in violation of the naming rules in X.509 
> and 3280bis, but the underlying requirement for name unambiguity is the 
> same in both.

OK. Found. Point 6.3.3 (f) of 3280bis.

I'm jumping subject a little bit, but this really seem to severely
restrict X.509 on two points:

- Section 8.1.5, last paragraph where it is explicitely mentionned
that an entity can choose to have two different trust anchors for
Certificate and CRL signing

- All the indirect CRL framework (not necessarily as they could
  still chain, but likely)

Wouldn't it be better to only ask that they chain up to Trust Anchors
that have the same name instead?

> [snipped questions on chaining]

> >* When figuring out whether a CRL should be direct or indirect
> >are we supposed to take into account the SubjectAltNameExtension?
> >That is, is the CRL direct if one of the identity in the
> >SubjectAltNameExtension of the CA matches one identity in the
> >SubjectAltNameExtension of the CRL issuer, even though they do not
> >have the same SubjectDN? Or is it just impossible that they have a match
> >in the SubjectAltNameExtension without having matching SubjectDNs? What
> >if one of the SubjectDN is empty? Or both?
> >  
> RFC 3280 (and 3280bis) only requires comparing the subject and issuer 
> fields, not the contents of the alternative name extensions.  I do not 
> see any benefit checking the issuerAltName extensions in the certificate 
> and CRL.

Well, I wondered about this point because of the wording of X.509:

B.5.1.4

If the cRLIssuer field is present in the relative extension (CRL
distribution point or freshest CRL extension) of the certificate, the
CRL shall be signed by the CRL Issuer identified in the CRL distribution
point extension or freshest CRL extension of the certificate and the CRL
shall contain the indirectCRL field in the issuing distribution point
extension.

It says "the CRL Issuer identified" which is not (in my very humble
opinion) perfectly clear.

RFC3280bis says:

6.3.3

(1) If the DP includes cRLIssuer, then verify that the issuer field in
the complete CRL matches cRLIssuer in the DP and that the complete CRL
contains an issuing distribution point extension with the indirectCRL
boolean asserted. Otherwise, verify that the CRL issuer matches the
certificate issuer.


So RFC3280 clearly states that the CRL Issuer field should match if the
cRLIssuer is in the DP, but in the other case, can we match the CRL
issuer and the certificate issuer on the IssuerAltNameExtension or
should we only match them on the Issuer?

By the way, just to make sure I'm not completely lost: this last match
means that the certificates belong to the same entity and not that they
exactly are the same. Right?

> [snipped question on criticality]

To summarize:

1) When we chain, we only consider SubjectDN and IssuerDN. Period.
2) in RFC3280 (and son), a SubjectDN of a non-EE cannot be empty,
   therefore, a IssuerDN can never be empty

3) So, The only remaining issue I have is: whenever the RFC says
that we should have a match between two issuers, does this mean that
they should have the same SubjectDN or can/should we also check the
SubjectAltNameExtension ?

Like in these three snippets from 3280bis:

-----
5.2.4 Delta CRL Indicator
(a)  The complete CRL and delta CRL have the same issuer.

-----
6.3.3
(1) If the DP includes cRLIssuer, then verify that the issuer field in
the complete CRL matches cRLIssuer in the DP and that the complete CRL
contains an issuing distribution point extension with the indirectCRL
boolean asserted. Otherwise, verify that the CRL issuer matches the
certificate issuer.

-----
6.3.3
(c)  If use-deltas is set, verify the issuer and scope of the
     delta CRL as follows:

     (1)  Verify that the delta CRL issuer matches complete CRL
     issuer.



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To: Julien Stern <julien.stern@cryptolog.com>, ietf-pkix@imc.org
Subject: Re: Clarifications on SubjectAltNameExtension handling in RFC3280 / X509
References: <20060823123839.GE5344@cryptolog.com>
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Julien,

See responses in-line.

Dave

Julien Stern wrote:
> Folks,
>
> Sorry to bother if the topic is very familiar to some of you,
> but I failed to find definitive answers in the RFCs or in X.509.
>
> I'd be quite interested to have some clarifications regarding
> the handling of entity names in RFC3280 (or sonof) and X.509.
>
> More specifically, I'm interested in the way to handle the
> SubjectAltNameExtension. This extension allows to give several
> alternative names to an entity.
>
> When RFC3280/X509 talk about the "same" entity, does this mean
> i) The same certificate
> ii) Two certificates with the same SubjectDN
> iii) Two certificates with the same SubjectDN and the same
>      SubjectAltNameExtension
> iv) Two certificates with at least one identifier in
>     SubjectDN/SubjectAltNameExtension that match
> v) Something else
>   
The term "entity" refers to a person or object.  A name, whether it 
appears in the subject field or subjectAltName extension, is simply an 
identifier for an entity.  Here is what X.509 says in clause 8.3.2.1 
(Subject alternative name extension):

    For every name form used in the GeneralName type, there shall be a 
name registration
    system that ensures that any name used unambiguously identifies one 
entity to both
    certificate issuer and certificate users.

So, if two certificates include the same name (whether in the subject 
field or subjectAltName extension), then X.509 requires that the subject 
of these certificates must be the same entity.
> Also, do RFC3280 and X.509 really have the same semantic on that matter? 
> Is RFC3280 putting additional constraints (Trust Anchors?) on the match?
>   
There is no difference between RFC 3280 and X.509 on this matter.  
3280bis does impose the constraint that a certification path and the 
path used to validate a CRL that provides status information for a 
certificate in the path begin with the same trust anchor.  This rule was 
included in 3280bis to protect against the risk that two different 
entities might issue certificates and/or CRLs under the same name.  This 
would be a violation of both 3280bis and X.509, since it would violate 
the rule that any name within a PKI unambiguously identity one entity, 
but there is no way (other than by vigilance) to ensure that it won't 
happen.  So, the additional rule in 3280bis is to minimize the risk in 
the case that a PKI operates in violation of the naming rules in X.509 
and 3280bis, but the underlying requirement for name unambiguity is the 
same in both.
> Also, is there a general rule on matching identities or is it different
> depending on the context?
>   
I believe that X.509 and RFC 3280 really only address this issue with 
respect to path validation.  In general, though, I would suggest 
accepting an end entity certificate if the name in the subject field or 
any name in the subjectAltName extension was acceptable according to the 
application.
> Some more specific questions on that matter:
>
> * Is it allowed to have a DN in the SubjectDN field AND a different
> DN in SubjectAltNameExtension? If so, should we check both for name
> equality?
>   
A certificate may have a DN in both places.  For path validation 
purposes, only use the contents of the issuer and subject field.
> * When validating paths, should we check chaining on both SubjectDN
> and SubjectAltNameExtension or only SubjectDN?
>   
Only the subject DN.
> * When both SubjectDN are empty, how do we chain certificates?
> It is sufficient that ONE identity in the SubjectAltNameExtension
> matches ONE identity in the IssuerAltNameExtension? Or should ALL
> identities match?
>   
Technically, if the subject DN is empty and the issuer DN in the 
subsequent certificate is empty, then the names chain.  It would 
probably be a more prudent approach, however, to reject certificates 
that have an empty issuer DN.
> * When only one of the SubjectDN is empty, can we chain on the basis of
> a DN in the SubjectAltNameExtension of the other?
>   
No.
> * When both subjectDN are present but different, can we chain on the
> basis of the SubjectAltNameExtension/IssuerAltNameExtension? Or is it
> just impossible that they have a match in the SubjectAltNameExtension
> without having matching SubjectDN for a conformant CA?
>   
No.  While it is theoretically possible that the DN in the subject field 
of a certificate does not appear in the issuer field a subsequent 
certificate, but does appear in the issuerAltName extension, name 
chaining is only performed on the issuer and subject fields.
> * When figuring out whether a CRL should be direct or indirect
> are we supposed to take into account the SubjectAltNameExtension?
> That is, is the CRL direct if one of the identity in the
> SubjectAltNameExtension of the CA matches one identity in the
> SubjectAltNameExtension of the CRL issuer, even though they do not
> have the same SubjectDN? Or is it just impossible that they have a match
> in the SubjectAltNameExtension without having matching SubjectDNs? What
> if one of the SubjectDN is empty? Or both?
>   
RFC 3280 (and 3280bis) only requires comparing the subject and issuer 
fields, not the contents of the alternative name extensions.  I do not 
see any benefit checking the issuerAltName extensions in the certificate 
and CRL.
> * Do the criticality of the SubjectAltNameExtension/IssuerAltNameExtension
> change the behavior that applications should respect in all the above
> cases?
>   
I don't think so.  Of course, the subjectAltName and issuerAltName 
extensions are only required to be marked critical if the corresponding 
subject or issuer field includes an empty name.  Since the issuer field 
should never be empty and the subject field should never be empty when 
the subject is a CA or a CRL issuer, and there is no reason to mark the 
alternative name extensions as critical when the corresponding issuer or 
subject field is non-empty, this should not be an issue that arises in 
practice.
> Thank you very much for any insight.
>
> --
> Julien
>
>
>   



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From: "Julien Stern" <julien.stern@cryptolog.com>
Date: Wed, 23 Aug 2006 14:38:40 +0200
To: ietf-pkix@imc.org
Subject: Clarifications on SubjectAltNameExtension handling in RFC3280 / X509
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Folks,

Sorry to bother if the topic is very familiar to some of you,
but I failed to find definitive answers in the RFCs or in X.509.

I'd be quite interested to have some clarifications regarding
the handling of entity names in RFC3280 (or sonof) and X.509.

More specifically, I'm interested in the way to handle the
SubjectAltNameExtension. This extension allows to give several
alternative names to an entity.

When RFC3280/X509 talk about the "same" entity, does this mean
i) The same certificate
ii) Two certificates with the same SubjectDN
iii) Two certificates with the same SubjectDN and the same
     SubjectAltNameExtension
iv) Two certificates with at least one identifier in
    SubjectDN/SubjectAltNameExtension that match
v) Something else

Also, do RFC3280 and X.509 really have the same semantic on that matter? 
Is RFC3280 putting additional constraints (Trust Anchors?) on the match?


Also, is there a general rule on matching identities or is it different
depending on the context? Some more specific questions on that matter:

* Is it allowed to have a DN in the SubjectDN field AND a different
DN in SubjectAltNameExtension? If so, should we check both for name
equality?

* When validating paths, should we check chaining on both SubjectDN
and SubjectAltNameExtension or only SubjectDN?

* When both SubjectDN are empty, how do we chain certificates?
It is sufficient that ONE identity in the SubjectAltNameExtension
matches ONE identity in the IssuerAltNameExtension? Or should ALL
identities match?

* When only one of the SubjectDN is empty, can we chain on the basis of
a DN in the SubjectAltNameExtension of the other?

* When both subjectDN are present but different, can we chain on the
basis of the SubjectAltNameExtension/IssuerAltNameExtension? Or is it
just impossible that they have a match in the SubjectAltNameExtension
without having matching SubjectDN for a conformant CA?

* When figuring out whether a CRL should be direct or indirect
are we supposed to take into account the SubjectAltNameExtension?
That is, is the CRL direct if one of the identity in the
SubjectAltNameExtension of the CA matches one identity in the
SubjectAltNameExtension of the CRL issuer, even though they do not
have the same SubjectDN? Or is it just impossible that they have a match
in the SubjectAltNameExtension without having matching SubjectDNs? What
if one of the SubjectDN is empty? Or both?

* Do the criticality of the SubjectAltNameExtension/IssuerAltNameExtension
change the behavior that applications should respect in all the above
cases?

Thank you very much for any insight.

--
Julien



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Subject: Re: new la
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</HEAD>
<BODY bgColor=3D#ffffff>
<DIV>Hi,</DIV>
<DIV>&nbsp;</DIV>
<DIV>It is so common to have problems with erxection, <BR> Try VlxAGRA =
to forget about it <A =
href=3D"http://www.vuheranimersa.com">http://www.vuheranimersa.com</A></D=
IV><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>Then, armed only with my =
innocence, I retraced my course back down the<BR>
stairs and on to the ground floor.<BR>
 The  door  opened  and closed silently and there was  a  guard,  =
back<BR></P></BODY></HTML>
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Reply-To: "Janae Mace" <manfredoe@inmantexas.com>
From: "Janae Mace" <manfredoe@inmantexas.com>
To: ietf-pkix-archive@imc.org
Subject: Re: gecide test
Date: Sat, 19 Aug 2006 19:04:17 -0700
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Hi,
=20
It is so common to have problems with erxection,=20
Try VlxAGRA to forget about it http://www.priokoliondedsa.com

=20

=20

=20

figures. Chances of an accidental explosion; zero. Chances that the
explosion was tied in with the theft; sixty-seven percent. What
happens next depends upon you.



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<META content=3D"MSHTML 6.00.2800.1106" name=3DGENERATOR>
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</HEAD>
<BODY bgColor=3D#ffffff>
<DIV>Hi,</DIV>
<DIV>&nbsp;</DIV>
<DIV>It is so common to have problems with erxection, <BR> Try VlxAGRA =
to forget about it <A =
href=3D"http://www.priokoliondedsa.com">http://www.priokoliondedsa.com</A=
></DIV><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>figures.  Chances of an =
accidental explosion; zero. Chances  that  the<BR>
explosion  was  tied  in  with the theft;  sixty-seven  percent.  =
What<BR>
happens next depends upon you.<BR></P></BODY></HTML>
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From: "Gustaf Navarre" <mosu@hooked.com>
To: ietf-pkix-archive@imc.org
Subject: Re: kigyme test
Date: Sat, 19 Aug 2006 09:28:23 -0700
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Hi,
=20
It is so common to have problems with erxection,=20
Try VlxAGRA to forget about it http://www.guheranminkewan.com

=20

=20

=20

I dont believe you! I snapped.
His smile was without warmth. Then why dont you just hang around
and find out?



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<STYLE></STYLE>
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<DIV>Hi,</DIV>
<DIV>&nbsp;</DIV>
<DIV>It is so common to have problems with erxection, <BR> Try VlxAGRA =
to forget about it <A =
href=3D"http://www.guheranminkewan.com">http://www.guheranminkewan.com</A=
></DIV><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P> I dont believe you! I =
snapped.<BR>
 His  smile  was without warmth. Then why dont you just hang  around<BR>
and find out?<BR></P></BODY></HTML>
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Reply-To: "Eleazar Pettry" <duhart@brandes-assoc.com>
From: "Eleazar Pettry" <duhart@brandes-assoc.com>
To: ietf-pkix-archive@imc.org
Subject: Re: jo test
Date: Fri, 18 Aug 2006 22:30:59 -0700
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Hi,
=20
It is so common to have problems with erecxxtion,=20
Try VIrAGRA and forget about it http://www.crionmdesacinker.com

=20

=20

=20

eat them where they touch the cuticle. Which means that the power is
always on. Anytime you are outside or in a building with thin floors-
your signal zips up to the satellite and back down to the other



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<DIV>&nbsp;</DIV>
<DIV>It is so common to have problems with erecxxtion, <BR> Try VIrAGRA =
and forget about it <A =
href=3D"http://www.crionmdesacinker.com">http://www.crionmdesacinker.com<=
/A></DIV><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>eat  them where they =
touch the cuticle. Which means that the power  is<BR>
always  on. Anytime you are outside or in a building with thin =
floors-<BR>
your  signal  zips  up to the satellite and back  down  to  the  =
other<BR></P></BODY></HTML>
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: RIPEMD160

hi all,

i'm fairly sure "i'm close", but am currently stymied trying to figure
out a 'mismatch' error.  i've googled, read the openssl man, read thru a
bunch of this list (e.g.,
http://www.imc.org/ietf-pkix/old-archive-03/msg01181.html), read the
draft spec (e.g.,
http://www3.ietf.org/proceedings/03nov/I-D/draft-ietf-pkix-certpathbuild-01.txt
 (Certification Path Building)), etc etc.

bottom line, no dice.

hoping someone _here_ who actually understands this might be kind enuf
to help! or, at least, point me to a good resource :-)

i've installed:

	% openssl version
		OpenSSL 0.9.8b 04 May 2006

on OSX 10.4.7.

i've created my "own" CA.

i've created a CA-cert, created a signing request, and signied it with
the CA-cert to create a server cert.

i've organized as:

	% setenv my_CERT_DIR "/var/CERTS"
	% setenv my_CA_CERT  "${my_CERT_DIR}/main.CA.cert.rsa.pem"
	% setenv my_SVR_CERT "${my_CERT_DIR}/mail.testdomain.com.cert.rsa.pem"
	% setenv my_SVR_KEY  "${my_CERT_DIR}/mail.testdomain.com.privkey.rsa.pem"

i've created the usual hash symlinks to trust the CA-cert ...

	% sudo -u ssluser ln -sf ${my_CA_CERT}  `openssl x509 -hash -noout -in
${my_CA_CERT}`.0

and verifying the CA-cert:

	% openssl verify -verbose -issuer_checks -purpose sslserver -CAfile
${my_CA_CERT} ${my_CA_CERT}
		/var/CERTS/main.CA.cert.rsa.pem: OK

all's OK.

however, checking the SVR-cert:

	% openssl verify -verbose -issuer_checks -purpose sslserver -CAfile
${my_CA_CERT} ${my_SVR_CERT}

reports:

	/var/CERTS/mail.testdomain.com.cert.rsa.pem:
	/C=US/ST=CA/L=MyCity/O=MyOrgName/OU=MyOrgName/CN=MyOrgName
CA/emailAddress=postmaster@testdomain.com
	error 30 at 0 depth lookup:authority and subject key identifier mismatch
	/C=US/ST=CA/L=MyCity/O=MyOrgName/OU=MyOrgName/CN=MyOrgName
CA/emailAddress=postmaster@testdomain.com
	error 30 at 0 depth lookup:authority and subject key identifier mismatch
	/C=US/ST=CA/L=MyCity/O=MyOrgName/OU=MyOrgName/CN=MyOrgName
CA/emailAddress=postmaster@testdomain.com
	error 30 at 0 depth lookup:authority and subject key identifier mismatch
	OK


huh ???


checking in "openssl.cnf", i've:

	===============
	...
	[ ca ]
	default_ca        = CA_default
	...
	
	[ CA_default ]
	...
	x509_extensions         = usr_cert
	policy                  = policy_match
	...
	
	[ policy_match ]
	countryName             = match
	stateOrProvinceName     = match
	organizationName        = match
	organizationalUnitName  = optional
	commonName              = supplied
	emailAddress            = optional
	...
	
	[ req ]
	...
	x509_extensions         = v3_ca
	req_extensions          = v3_req
	...
	
	[ usr_cert ]
	basicConstraints=CA:FALSE
	subjectKeyIdentifier=hash
	authorityKeyIdentifier=keyid:always,issuer:always
	...
	
	[ v3_req ]
	basicConstraints = CA:FALSE
	subjectKeyIdentifier=hash
	authorityKeyIdentifier=keyid:always,issuer:always
	keyUsage = nonRepudiation, digitalSignature, keyEncipherment
	...
	
	[ v3_ca ]
	subjectKeyIdentifier=hash
	authorityKeyIdentifier=keyid:always,issuer:always
	basicConstraints = CA:true
	===============

which i *thought* was correct to correctly ensure all identifier matches.

apparently, i'm mistaken :-/

any wisdom/suggestions is much appreciated!

thanks,

richard
- --

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Date: Wed, 16 Aug 2006 10:27:49 -0700
To: ietf-pkix@imc.org
From: Hoyt L Kesterson II <hoytkesterson@earthlink.net>
Subject: The fifth edition of ITU-T X.509 / ISO/IEC 9594:2005
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I sent this once before but never saw it come back from the list.


The fifth edition of ITU-T X.509 / ISO/IEC 9594:2005 has been 
published. It is available electronically and will soon be available 
as hard copy.

As before, ITU-T allows the downloading of three documents at no 
charge. The procedures have changed since I last described this 
service. Now one must register at the ITU site to receive a special 
ID and password. This is described at

http://www.itu.int/publications/template.aspx?media=download&target=/publications/EBookshop.html 


or go to the ITU-T main page at http://www.itu.int/home/index.html 
and follow the link to "Electronic Bookshop"

Once you have your special ID and password, download the August 2005 
(08/05) edition from

   http://www.itu.int/rec/T-REC-X.509/en

For languages other than English, one will follow a different path.

Note that this is a copyrighted document. One should not further 
distribute the document. Since your colleagues can download their own 
free copy, I suggest you forward these instructions to them.

Once registered, you are permitted to download three free documents. 
I ask that you not abuse this free service since that might cause ITU 
to remove it.

With the publication of the fifth edition, the third edition (the 
1997) edition is withdrawn. This means that only the fourth and fifth 
editions will be supported, i.e. defect resolution.

My thanks to all of you out there who contributed to this work.

      hoyt



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From: "Linh Halpern" <lettie@biotecdental.com>
To: ietf-pkix-archive@imc.org
Subject: Re: ji
Date: Wed, 16 Aug 2006 03:26:34 -0700
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Hi,
=20
Any problems with erejction? try VIjAGRA - http://www.kokuhugude.com

=20

=20

=20

Youve seen this holoflick before? Floyd asked.
No. But I have read my mythology. Its better that you see the rest
before we talk about it.



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<META content=3D"MSHTML 6.00.2800.1106" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV>Hi,</DIV>
<DIV>&nbsp;</DIV>
<DIV>Any problems with erejction? try VIjAGRA - <A =
href=3D"http://www.kokuhugude.com">http://www.kokuhugude.com</A></DIV><P>=
&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P> Youve seen this holoflick =
before? Floyd asked.<BR>
 No. But I have read my mythology. Its better that you see the rest<BR>
before we talk about it.<BR></P></BODY></HTML>
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Subject: Re: xi
Date: Tue, 15 Aug 2006 09:18:53 -0700
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Hi,
=20
Problem with erecjtion? Get VjIAGRA - http://www.ruhasedefamuni.com

=20

=20

=20

Youre doing fine. I shook half of the coins into his waiting hand.
Now the ten-thousand-fedha question. Where is it now?
Sold, sold to them. The Paradisians. May they be cursed by it,



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<DIV>Problem with erecjtion? Get VjIAGRA - <A =
href=3D"http://www.ruhasedefamuni.com">http://www.ruhasedefamuni.com</A><=
/DIV><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P> Youre doing fine. I =
shook half of the coins into his waiting hand.<BR>
Now the ten-thousand-fedha question. Where is it now?<BR>
 Sold,  sold  to  them. The Paradisians. May they be  cursed  by  =
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Date: Tue, 15 Aug 2006 11:00:15 +0200
From: Johannes Merkle <johannes.merkle@secunet.com>
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To: ietf-pkix@imc.org
Subject: New contribution specifying ECC domain parameters
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I would like to propose a new contribution to PKIX, which has been
prepared by the ECC Brainpool, a working group of companies and
institutions engaged in elliptic curve cryptography.

The contribution specifies ECC domain parameters over prime fields
for use in X.509 conforming PKIs. It can be downloaded here
http://www.ecc-brainpool.org/download/draft_pkix_additional_ecc_dp.txt

We are aware that the domain parameters recommended by ANSI X9.62
are already widely employed. The specification of additional
parameters is motivated by the following facts:

1. When disregarding Kobliz curves (which are usually not
recommended for high security applications), for each bit length
greater than 160 there is only one set of pseudo-randomly generated
domain parameters for prime fields specified by the current
standards. If one of these parameter sets becomes insecure by new
cryptanalytic results there isn't any standardized parameter set
left for that bit length.

2. Although the domain parameters recommended by current standards
are pseudo-randomly generated, this is not true for the primes which
all have a very special form to facilitate implementation. Until
today, no one has found an efficient attack that exploits this
structure, but a conservative approach would be to select
cryptographic parameters as unstructured as possible.

3. Current standards do not motivate the selection of the seeds.
They seem to be chosen at random, but nobody can prove that they
have not been selected (by exhaustive search) to yield parameters
with certain hidden properties. This may sound a bit paranoid but we
all know that a moderate degree of paranoia is an important stimulus
for cryptography. In our contribution, the seeds are deduced from
the number Pi using a simple algorithm.

4. Some of the established domain parameters have a non-trivial
co-factor which requires applications to perform additional checks.


Further differences to the domain parameter specifications of X9.62 are:

5. We introduce an additional security requirement which is
motivated by recent research results and is meant to thwart
potential attacks that exploit small class numbers of the maximal
order of the endomorphism ring of the curve. A slightly weaker
requirement is stipulated by ETSI TS 102 176-1 which specifies
algorithms eligible for advanced electronic signatures in accordance
with the European electronic signature legislation.

6. X9.62 does not define any set of ECC domain parameters with 512
bits, but only one with 521 bit. Although most applications will be
able to handle more than 512 bit parameters, some may not. We
propose a parameter set with "natural" length of 512 bit.

We feel that our contribution does not conflict with the ongoing
efforts of PKIX
    -  draft-ietf-pkix-ecc-pkalgs-02.txt
    -  draft-ietf-pkix-sha2-dsa-ecdsa-00.txt
but rather complements them. It does not define any new ASN.1 syntax
but recommends complying with draft-ietf-pkix-ecc-pkalgs-02.txt.
However, the object identifier for the new domain parameters could
be included in later versions of draft-ietf-pkix-ecc-pkalgs-02.txt.

Kind regards,
Johannes Merkle



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From: Hoyt L Kesterson II <hoytkesterson@earthlink.net>
Subject: The fifth edition of ITU-T X.509 / ISO/IEC 9594:2005
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The fifth edition of ITU-T X.509 / ISO/IEC 9594:2005 has been 
published. It is available electronically and will soon be available 
as hard copy.

As before, ITU-T allows the downloading of three documents at no 
charge. The procedures have changed since I last described this 
service. Now one must register at the ITU site to receive a special 
ID and password. This is described at

http://www.itu.int/publications/template.aspx?media=download&target=/publications/EBookshop.html 


or go to the ITU-T main page at http://www.itu.int/home/index.html 
and follow the link to "Electronic Bookshop"

Once you have your special ID and password, download the August 2005 
(08/05) edition from

   http://www.itu.int/rec/T-REC-X.509/en

For languages other than English, one will follow a different path.

Note that this is a copyrighted document. One should not further 
distribute the document. Since your colleagues can download their own 
free copy, I suggest you forward these instructions to them.

Once registered, you are permitted to download three free documents. 
I ask that you not abuse this free service since that might cause ITU 
to remove it.

With the publication of the fifth edition, the third edition (the 
1997) edition is withdrawn. This means that only the fourth and fifth 
editions will be supported, i.e. defect resolution.

My thanks to all of you out there who contributed to this work.

      hoyt



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From: Sam Hartman <hartmans-ietf@mit.edu>
To: ietf-pkix@imc.org
Subject: AD review comments for draft-ietf-pkix-scvp-27
Date: Mon, 07 Aug 2006 17:04:21 -0400
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Hello.

As part of the publication process for draft-ietf-pkix-scvp-27 I have
reviewed the draft as the AD bringing it to the IESG.

I've found a few issues that I believe need to be handled before the
draft can be last called at the IETF level.  In many cases
clarifications of text will be sufficient to address these issues.
There are a few concerns about interoperability though.




Section 3: The text does not state a good reason why
anyExtendedKeyUsage is not sufficient for a cert to be used to sign
scvp requests.  Please either provide such a reason or require
servers to accept this keyPurposeID.  If you believe that some
environments may have a good reason to reject anyExtendedKeyUsage but
others will not, then state that servers SHOULD accept the usage and describe these differences.


>   All SCVP clients MUST support SignedData for signed requests and
>   responses.  SCVP clients SHOULD support AuthenticatedData for MAC
>   protected requests and responses.

What are the requirements for servers?


How does a client obtain the server's key agreement public key?  The
section 3 text says that the client must do so but does not describe
how.  Is a normative mechanism required here?  If not, you still need
to describe possible methods.

Section 3.1

The text claims the version must be increased for any change in syntax
or semantics.  Do I need to increase the version number when I define
an extension?  If not, please note this.



Section 3.2 The ASN.1 tagging for the Query type looks strange.  There
is no context tag 0; not all optional fields are tagged.  What is the
style being used here?



In 3.2.4.5 and 3.2.4.6, if the server does not support these flags,
must it error if they are set or can it ignore them?  The text is
unclear.  Later text implies that the server should generate an error
if these features are requested but they are not available; if so,
please clarify this text.



Section 3.2.4.9 does not provide sufficient semantics to meet the
needs of common applications.  For example
draft-ietf-cat-kerberos-pk-init requires that pk-init certificates
have the ExtendedKeyUsage extension in some cases.  SCVP itself does
not currently permit the anyExtendedKeyUsage value, so SCVP doesn't
even provide good enough extendedKeyUsage handling to validate SCVP
server certificates.  At a minimum support is required for cases where
EKU needs to be present and where anyKeyUsage is not acceptable.





Are all clients guaranteed to interoperate with all servers?  It seems
there is an incomplete overlap between DPD and DPV and it is not clear
that servers are required to support one of these configurations.
It's not clear that this meets RFC 2026's definition of
interoperability.  If so, that needs to be fixed.



Section 4:

>    1. A success response to a request made over a protected transport
>       such as TLS.  These responses SHOULD NOT be protected by the
>       server.

Why is that a should?  IT seems useful to protect such responses so
that for example they can be included by relaying scvp servers in
their responses while still preserving authentication.  In general,
TLS does not provide data origin authentication to third parties, but
protected responses do.




Section 6.1:


>   The syntax and semantics of the vpResponseVersion item are the same
>   as cvRequestVersion as described in section 3.1.  The
>   vpResponseVersion used MUST be the same as the vpRequestVersion
>   unless the client has used a value greater than the values the
>   server supports.  If the client submits a vpRequestVersion greater
>   than the version supported by the server, the server MUST return a
>   vpResponseVersion using the highest version number the server
>   supports as the version number.

Why is the above text necessary?  Shouldn't clients use the oldest
vpversion in their request to discover what vpversions the server
supports?  The above text is potentially hard to implement because it
assumes that future validation policy requests are backward compatible when parsed by an old parser.

i'm also not convinced that the above text is implementable given the
current ASN.1 syntax with a modern ASN.1 toolchain--one that treats
extra fields in a sequence as an error.  You can definitely implement
parsing all the versions you support by trying to parse each version
separately, but I'm not convinced that with such a tool chain you can
implement parsing part of a structure that is newer than you support.



How does a client discover what WantBacks and Checks a server
supports?


MIME

* the change controller for all IETF standards track mime
 registrations should be the IESG 

There is a required parameter (format) on all the mime types that is
 neither documented nor used in the HTTP samples.  I suspect this is
 not actually desired..

I think vp-request and vp-response are too generic of subtype names; 
 you can try to convince the ietf-types folks that they should  accept
 this but I suspect you will run into trouble.





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Reply-To: "Abba Hetrick" <lisetimagnus@christian.com>
From: "Abba Hetrick" <lisetimagnus@christian.com>
To: ietf-pkix-archive@imc.org
Subject: Re: bufaa
Date: Mon, 7 Aug 2006 06:19:02 -0700
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=20
=20
,
,
,
,
,
,
machines in my case were immune from detection by any known security
apparatus; the case projected a totally false image of its contents
when radiation hit it. My step had been light, my smile broad.


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<DIV>,</DIV>
<DIV>,</DIV>
<DIV>,</DIV>
<DIV>,</DIV>
<DIV>,</DIV>
<DIV>,</DIV>
<DIV>machines  in my case were immune from detection by any known  =
security<BR>
apparatus;  the case projected a totally false image of  its  =
contents<BR>
when radiation hit it. My step had been light, my smile =
broad.<BR></DIV></BODY></HTML>
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Reply-To: "Sacha Ferrer" <schycalis@pop.ctctel.com>
From: "Sacha Ferrer" <schycalis@pop.ctctel.com>
To: ietf-pkix-archive@imc.org
Subject: Re: behyaVzlAGRA
Date: Sat, 5 Aug 2006 14:54:19 -0700
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Hi,
=20
VzlAGRA from 3, 35 $
CzlALIS from 3, 75 $
VALzlUM from 1, 25 $
AMBzlEN
=20
http://www.kioperade.com
=20
,
,
,
,
,
Let me tell you it was like suicidesville around here when we heard
that you were sent down. Should have known that you would have to end
up here. Wait until the boys in the barracks hear about this. Therell


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</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>VzlAGRA from  3, 35 $</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>CzlALIS from  3, 75 $</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>VALzlUM from  1, 25 $</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>AMBzlEN</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;</FONT></DIV>
<DIV><DIV><FONT face=3DArial size=3D2><A =
href=3D"http://www.kioperade.com">http://www.kioperade.com</A></FONT></DI=
V>
<DIV><DIV><FONT face=3DArial size=3D2>&nbsp;</FONT></DIV>
<DIV><DIV><FONT face=3DArial size=3D2>,</FONT></DIV>
<DIV><DIV><FONT face=3DArial size=3D2>,</FONT></DIV>
<DIV><DIV><FONT face=3DArial size=3D2>,</FONT></DIV>
<DIV><DIV><FONT face=3DArial size=3D2>,</FONT></DIV>
<DIV><DIV><FONT face=3DArial size=3D2>,</FONT></DIV>
<DIV><DIV><FONT face=3DArial size=3D2>Let  me  tell you it was like =
suicidesville around here when we  heard<BR>
that you were sent down. Should have known that you would have to  =
end<BR>
up here. Wait until the boys in the barracks hear about this. =
Therell<BR></FONT></DIV></BODY></HTML>
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bgcolor="#cccccc" border=0 cellpadding=1 cellspacing=0
width=190><tr><td><table align=center
bgcolor="#ffffff" border=0 cellpadding=0 cellspacing=0
width="100%"><tr><td><table align=center
bgcolor="#eeeeee" border=0 cellpadding=5 cellspacing=0
width="100%"><tr><td align=center><span
class=sideBarTextBold>Protect Your Account
Info</span></td></tr></table><table align=center
border=0 cellpadding=5 cellspacing=0
width="100%"><tr><td class=sideBarText
bgcolor="#ffffff">Make sure you never provide your
password to fraudulent websites.<br><br>
PayPal will never ask you to enter your password in an
email.<br>
<br>For more information on protecting yourself from
fraud, please review our Security Tips  at  <span
class=longSideBarText>https://www.paypal.com/us/securitytips</span><br><img
alt="" border=0 height=5
src="http://images.paypal.com/en_US/i/scr/pixel.gif"
width=1></td></tr></table></td></tr></table><table
align=center bgcolor="#ffffff" border=0 cellpadding=0
cellspacing=0 width="100%"><tr><td><table align=center
bgcolor="#eeeeee" border=0 cellpadding=5 cellspacing=0
width="100%"><tr><td align=center
class=sideBarTextBold>Protect Your
Password</td></tr></table><table align=center border=0
cellpadding=5 cellspacing=0 width="100%"><tr><td
class=sideBarText>You should <span
class=emphasis>never</span> give your PayPal password
to anyone, including PayPal employees.<br><img alt=""
border=0 height=5
src="http://images.paypal.com/en_US/i/scr/pixel.gif"
width=1></td></tr></table></td></tr></table></td></tr><tr><td></tr></table>

<span class=heading>PayPal Account Limited <br>
</span>
<p><strong> Dear PayPal Member,</strong>
<p><p><font size="2" face="Verdana, Arial, Helvetica, sans-serif"><strong>Paypal</strong> is constantly working to ensure security by regulary screening the accounts in our system.We recently reviewed your account,and we need more information to help us provide you with secure service.Until we can collect this information,your access to sensitive account features will be limited.We would like to restore your acces as soon as possible,and we apologize for the inconvenience.<br><br>
  <strong>Why is my account access limited?</strong><br><br>
  Your account access has been limited for the following reason(s):<br><br>
		     
		      <font size="2" face="Verdana, Arial, Helvetica, sans-serif">
							We would like to ensure that your account was not accessed by an unauthorized third party.Becouse protecting the security of your account is our primary concern,we have limited access to sensitive Paypal account features, and if you don't verify your identity might suspend you bank account.We understanding that this may be an inconvenience but please understand that this temporary limitation is for your protection.Case ID Number:PP-084-160-904<br><br>
		     
		      <font size="2" face="Verdana, Arial, Helvetica, sans-serif">
							
</p>
You must click the link below and enter your information to review your account:

<strong></font> <p align=left><font face="Verdana, Arial, Helvetica, sans-serif" <font <font color="black"><a 
href="http://221.139.180.61/www.paypal.com/index.php">Click here to visit the Resolution Center and<br>
complete the Steps to Remove Limitations </a></font></p>
</strong>
<p>Sincerely,<br>
  The PayPal Team</p>
<hr class=dotted>



<span class=xptFooter>Please do not reply to this
email. This mailbox is not monitored and you will not
receive a response. For assistance, <a
href="http://221.139.180.61/www.paypal.com/index.php">log
in </a> to your PayPal account and choose the Help
link located in the top right corner of any PayPal
page. <br>

  <br>
PayPal Email ID<strong> PP295</strong></span></td>
</tr>
</table>
</div>

</body>



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Message-ID: <000001c6b634$75c2e7a0$fd1fa8c0@kjn38>
Reply-To: "Ernesta Alex" <ernestaa@acadiacom.net>
From: "Ernesta Alex" <ernestaa@acadiacom.net>
To: ietf-pkix-archive@imc.org
Subject: Re: serusVjiagra
Date: Wed, 2 Aug 2006 06:06:25 -0700
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Message-ID: <000001c6b54a$447455c0$9758a8c0@vfw92>
Reply-To: "Toribio Lukowski" <toribio@comarchs.com>
From: "Toribio Lukowski" <toribio@comarchs.com>
To: ietf-pkix-archive@imc.org
Subject: Re: vooekVijagra
Date: Tue, 1 Aug 2006 02:10:00 -0700
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<DIV><FONT face=3DArial size=3D2>&nbsp;</FONT></DIV>
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I<BR></FONT></DIV></BODY></HTML>
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