From: markh@wimsey.bc.ca (Mark C. Henderson)
Date: Mon, 31 Jan 94 12:33:08 PST
To: warlord@MIT.EDU>
Subject: Re: Index for ftp site csn.org:/mpj/
Message-ID: <199401312030.AA22787@squirrel.wimsey.bc.ca>
MIME-Version: 1.0
Content-Type: text/plain


> A bigger problem is that PEM uses DES rather than IDEA.  I just learned
> of a new attack by Mitsuru Matsui of Mitsubishi that requires 2^43
> *known* plaintexts, not chosen ones.  The note I received says that it
> ``breaks the scheme in 50 days on 12 HP9735 workstations''.  This was
> presented last week at the Japanese Conference on Cryptography and
> Information Security.

RIPEM supports two key triple DES.

Mark