Re: [TLS] New Version Notification for draft-katagi-tls-clefia-00.txt

Masanobu Katagi <Masanobu.Katagi@jp.sony.com> Wed, 20 July 2011 10:37 UTC

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Date: Wed, 20 Jul 2011 19:38:45 +0900
From: Masanobu Katagi <Masanobu.Katagi@jp.sony.com>
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Subject: Re: [TLS] New Version Notification for draft-katagi-tls-clefia-00.txt
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Hi all,

Thank you for valuable comments on our proposal of CLEFIA ciphersuites:
http://tools.ietf.org/id/draft-katagi-tls-clefia-00.txt.

In our draft above, we proposed a lot of combinations with SHA-1.
In response to the comments from the TLS working group, 
we would like to remove the following sets of SHA-1 based ciphersuites:
- All combinations involving CLEFIA_256 (from viewpoint of equivalent security to SHA-1)
- Combinations involving not commonly used public key primitives

Our updated proposal of SHA-1 based ciphersuites is as follows.

     CipherSuite TLS_RSA_WITH_CLEFIA_128_CBC_SHA            = {TBD,TBD};
     CipherSuite TLS_DHE_DSS_WITH_CLEFIA_128_CBC_SHA        = {TBD,TBD};
     CipherSuite TLS_DHE_RSA_WITH_CLEFIA_128_CBC_SHA        = {TBD,TBD};
     CipherSuite TLS_DH_anon_WITH_CLEFIA_128_CBC_SHA        = {TBD,TBD};
     CipherSuite TLS_ECDHE_ECDSA_WITH_CLEFIA_128_CBC_SHA    = {TBD,TBD};
     CipherSuite TLS_ECDHE_RSA_WITH_CLEFIA_128_CBC_SHA      = {TBD,TBD};
     CipherSuite TLS_PSK_WITH_CLEFIA_128_CBC_SHA            = {TBD,TBD};
     CipherSuite TLS_DHE_PSK_WITH_CLEFIA_128_CBC_SHA        = {TBD,TBD};

We are going to update this change in the next version of our draft.

Best regards,
Masanobu Katagi
Sony Corporation

On Tue, 5 Jul 2011 09:33:42 +0900
"Katagi, Masanobu" <Masanobu.Katagi@jp.sony.com>; wrote:
> Dear all,
> 
> We have submitted the Internet draft that defines cipher suites to support CLEFIA in TLS.
> http://tools.ietf.org/id/draft-katagi-tls-clefia-00.txt
> 
> CLEFIA is a 128-bit block cipher presented at FSE2007 and it is now used in commercial products.
> The algorithm of CLEFIA was published as RFC6114 in March 2011. 
> CLEFIA is a lightweight block cipher compared with AES, Camellia, and SEED. 
> We believe that CLEFIA will contribute to the Internet of Things as a lightweight cipher algorithm.
> 
> The security and performance of CLEFIA have been evaluated through the CRYPTREC project 
> which evaluates and monitors the security of Japan e-Government recommended ciphers. 
> It also has been submitted to the ISO/IEC standard (ISO/IEC 29192, Lightweight cryptography) and it's
> in the Final Draft International Standard.
> 
> Any comments on this draft would be appreciated.
> 
> Best regards,
> Masanobu Katagi
> Sony Corporation
> 
> Forwarded by Masanobu Katagi <Masanobu.Katagi@jp.sony.com>;
> ----------------------- Original Message -----------------------
>  From:    "internet-drafts@ietf.org"; <internet-drafts@ietf.org>;
>  To:      "Katagi, Masanobu" <Masanobu.Katagi@jp.sony.com>;
>  Cc:      "Katagi, Masanobu" <Masanobu.Katagi@jp.sony.com>;,
>           "Moriai, Shiho" <Shiho.Moriai@jp.sony.com>;
>  Date:    Mon, 4 Jul 2011 17:51:44 +0900
>  Subject: New Version Notification for draft-katagi-tls-clefia-00.txt
> ----
> 
> A new version of I-D, draft-katagi-tls-clefia-00.txt has been successfully submitted by Masanobu Katagi and posted to the IETF repository.
> 
> Filename:	 draft-katagi-tls-clefia
> Revision:	 00
> Title:		 CLEFIA Cipher Suites for Transport Layer Security (TLS)
> Creation date:	 2011-07-04
> WG ID:		 Individual Submission
> Number of pages: 16
> 
> Abstract:
>    This document specifies a set of cipher suites for the Transport
>    Security Layer (TLS) protocol to support the CLEFIA encryption
>    algorithm as a block cipher.  CLEFIA is a lightweight block cipher
>    and suitable for constrained devices.
> 
>                                                                                   
> 
> 
> The IETF Secretariat
> 
> 
> --------------------- Original Message Ends --------------------
> 
>