iaPCBC papers

["Steven M. Bellovin" <[e-mail]>]

A slightly-revised version of the draft is at 
http:/home/smb/lib/wwwfiles/papers/draft-bellovin-iapcbc-00.txt -- the claim 
that this mode is resistant to exhaustive key search has been deleted, since 
several people found successful attacks on that.  The Gligor-Donescu paper 
it's based on is at file:/home/smb/lib/wwwfiles/papers/iapcbc.ps.

A further change is needed (but has not yet been made) to the Internet draft:  
as written, it is suspectible to some truncation attacks.  While the practical 
significance of those attacks is unclear, the issue should certainly be 
addressed; there are several possible ways to do that.  But I wanted to first
post a version that deletes the key search claim.

		--Steve Bellovin