Re: [regext] Alexey Melnikov's Discuss on draft-ietf-regext-login-security-07: (with DISCUSS and COMMENT)
"Gould, James" <jgould@verisign.com> Fri, 24 January 2020 21:25 UTC
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From: "Gould, James" <jgould@verisign.com>
To: Alexey Melnikov <aamelnikov@fastmail.fm>
CC: The IESG <iesg@ietf.org>, "draft-ietf-regext-login-security@ietf.org" <draft-ietf-regext-login-security@ietf.org>, Joseph Yee <jyee@afilias.info>, "regext-chairs@ietf.org" <regext-chairs@ietf.org>, "regext@ietf.org" <regext@ietf.org>
Thread-Topic: [EXTERNAL] Re: Alexey Melnikov's Discuss on draft-ietf-regext-login-security-07: (with DISCUSS and COMMENT)
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Date: Fri, 24 Jan 2020 21:24:53 +0000
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Subject: Re: [regext] Alexey Melnikov's Discuss on draft-ietf-regext-login-security-07: (with DISCUSS and COMMENT)
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Alexey, I'll go ahead and add the following description of "whitespace" in section 1.1 "Conventions Used in This Document": "whitespace" is based on the definition for the XML schema whiteSpace datatype in [W3C.REC-xmlschema-2-20041028], which only includes the ASCII whitespace characters #x9 (tab), #xA (linefeed), #xD (carriage return), and #x20 (space). -- JG James Gould Distinguished Engineer jgould@Verisign.com <applewebdata://13890C55-AAE8-4BF3-A6CE-B4BA42740803/jgould@Verisign.com> 703-948-3271 12061 Bluemont Way Reston, VA 20190 Verisign.com <http://verisigninc.com/> On 1/24/20, 4:10 AM, "Alexey Melnikov" <aamelnikov@fastmail.fm> wrote: Hi James, Just replying to 1 point below: > On 23 Jan 2020, at 21:29, Gould, James <jgould@verisign.com> wrote: > > 2) In the same section: > > <loginSec:pw>: OPTIONAL plain text password that is case sensitive, > has a minimum length of 6 characters, and has a maximum length > that is up to server policy. All leading and trailing whitespace > is removed, and all internal contiguous whitespace that includes > #x9 (tab), #xA (linefeed), #xD (carriage return), and #x20 > (space) is replaced with a single #x20 (space). This element > MUST only be used if the [RFC5730] <pw> element is set to the > "[LOGIN-SECURITY]" value. > > What is the definition of "whitespace"? Does this only include characters > listed above or does it also include other Unicode characters (e.g. Unicode > whitespace property)? If the former, then instead of using "whitespace that > includes ..." use something like "whitespace is defined as one of ..." > > JG - The definition of "whitespace" is based on the definition for XML schema whiteSpace (https://www.w3.org/TR/xmlschema11-2/#rf-whiteSpace) which does not include non-ASCII whitespace. Validating XML parsers will apply the XML schema whitespace rules defined for the XML Schema "token" type (https://www.w3.org/TR/xmlschema11-2/#token) which is explicitly included in the description of the <loginSec:pw> element based on feedback from the working group. I don't recommend use of non-ASCII characters for passwords, but I don't believe the extension should disallow it. Please clarify this in the document. Probably the easiest way is to add definition of whitespace to the terminology section. BTW, I believe Precis framework will canonicalize all Unicode whitespaces (around 33 different characters) to ASCII space. Best Regards, Alexey
- [regext] Alexey Melnikov's Discuss on draft-ietf-… Alexey Melnikov via Datatracker
- Re: [regext] Alexey Melnikov's Discuss on draft-i… Gould, James
- Re: [regext] Alexey Melnikov's Discuss on draft-i… Alexey Melnikov
- Re: [regext] Alexey Melnikov's Discuss on draft-i… Gould, James
- Re: [regext] Alexey Melnikov's Discuss on draft-i… Hollenbeck, Scott
- Re: [regext] Alexey Melnikov's Discuss on draft-i… Gould, James
- Re: [regext] Alexey Melnikov's Discuss on draft-i… Alexey Melnikov
- Re: [regext] Alexey Melnikov's Discuss on draft-i… Alexey Melnikov
- Re: [regext] Alexey Melnikov's Discuss on draft-i… Gould, James