RE: I-D ACTION:draft-ietf-smime-multisig-00.txt


It does not replace it.

spt 

-----Original Message-----
From: owner-ietf-smime(_at_)mail(_dot_)imc(_dot_)org 
[mailto:owner-ietf-smime(_at_)mail(_dot_)imc(_dot_)org]
On Behalf Of Denis Pinkas
Sent: Wednesday, December 20, 2006 5:29 AM
To: ietf-smime(_at_)imc(_dot_)org
Subject: Re: I-D ACTION:draft-ietf-smime-multisig-00.txt


How does this document relate to <draft-ietf-smime-cms-mult-sign-02.txt> ?

Does it replace it ?

Denis

A New Internet-Draft is available from the on-line Internet-Drafts 
directories.
This draft is a work item of the S/MIME Mail Security Working Group of the

IETF.


      Title           : Multiple Signatures in S/MIME 
      Author(s)       : S. Turner
      Filename        : draft-ietf-smime-multisig-00.txt
      Pages           : 
      Date            : 2006-12-19
      
        CMS SignedData includes the SignerInfo structure to convey per-
        signer information. SignedData supports multiple signers and 
        multiple signature algorithms per-signer with multiple SignerInfo 
        structures. If a signer attaches more than one SignerInfo, there

are

        concerns that an attacker could perform a downgrade attack by 
        removing the SignerInfo(s) with the 'stronger' algorithm(s). This 
        document defines a signed attribute, its generation rules, and its

        processing rules to allow signers to convey multiple SignerInfo 
        while protecting against downgrade attacks. Additionally, this 
        attribute may assist during periods of algorithm migration. 


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Below is the data which will enable a MIME compliant mail reader 
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Content-Type: text/plain
Content-ID:    <2006-12-19135046(_dot_)I-D(_at_)ietf(_dot_)org>

ENCODING mime
FILE /internet-drafts/draft-ietf-smime-multisig-00.txt


Regards,

Denis Pinkas