[3005] in Kerberos
Propagating CBC mode
daemon@ATHENA.MIT.EDU (Clifford Neuman)
Wed Feb 9 16:11:52 1994
Date: Wed, 9 Feb 94 12:50:04 PST
From: Clifford Neuman <bcn@ISI.EDU>
To: gitte@itsec.bonn.cap-debis.de
Cc: kerberos@MIT.EDU, bernd@MIT.EDU
In-Reply-To: Users's message of Wed, 9 Feb 94 15:42:27 +0100 <9402091442.AA00563@itsec.bonn.cap-debis.de>
Basically it is like CBC, but instead of Xoring with ciphertext, you
xor with both plain and ciphertext. Note that this has the
unfortunate property that you can swap blocks in the ciphertext, and
only the block between the two swapped blocks will be garbled. V5 of
Kerberos does not use the PCBC mode, but instead uses CBC with a
checksum, which is how we should have done it in V4.
~ Cliff
