[504] in Kerberos
encryption question
daemon@TELECOM.MIT.EDU (Steve Miller)
Tue Sep 13 16:10:02 1988
From: miller%erlang.DEC@DECWRL.DEC.COM (Steve Miller)
To: kerberos@ATHENA.MIT.EDU, MILLER%erlang.DEC@DECWRL.DEC.COM
I am a little confused about the question from Ted Anderson. Is it about
the Kerberos DES-based pcbc encryption?
If the crypto algorithm is just an XOR, since XOR is commutative,
A XOR B = B XOR A
and you won't detect shuffled blocks. This is not the case with the
DES based pcbc_encrypt.
Steve
