I-D ACTION:draft-ietf-secsh-newmodes-01.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Secure Shell Working Group of the IETF.

	Title		: SSH Transport Layer Encryption Modes
	Author(s)	: M. Bellare, et. al.
	Filename	: draft-ietf-secsh-newmodes-01.txt
	Pages		: 11
	Date		: 2003-10-13
	
Researchers have recently discovered that the authenticated
encryption portion of the current SSH Transport Protocol is
vulnerable to several attacks.
This document describes new symmetric encryption methods for the SSH
Transport Protocol and gives specific recommendations on how
frequently SSH implementations should rekey.
Bellare, Kohno, and Namprempre [ACM CCS 2002] prove that if an SSH
application implements the modifications described in this document,
then the symmetric cryptographic portion of that application will
provably resist chosen-plaintext, chosen-ciphertext, reaction-based
privacy and integrity/authenticity attacks.

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