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I-D ACTION:draft-ietf-smime-small-subgroup-00.txt

1999-03-29 15:23:54
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           : Methods for Avoiding the 'Small-Subgroup' 
                          Attacks on the Diffie-Hellman Key Agreement Method 
                          for S/MIME
        Author(s)       : R. Zuccherato
        Filename        : draft-ietf-smime-small-subgroup-00.txt
        Pages           : 7
        Date            : 26-Mar-99
In some circumstances the use of the Diffie-Hellman key agreement scheme
in a prime order subgroup of a large prime p is vulnerable to certain
attacks known as 'small-subgroup' attacks.  Methods exist, however, to
prevent these attacks.  This document will describe the situations
relevent to the S/MIME standard in which protection is required and the
methods that can be used to to prevent these attacks.

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