It is a companion document, not a replacement.
Russ
At 05:28 AM 12/20/2006, Denis Pinkas wrote:
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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>http://www.ietf.org/internet-drafts/draft-ietf-smime-multisig-00.txt
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>
Regards,
Denis Pinkas