nis security (DES passwords)

horio shoichi bugsgrief at
Sat Sep 13 22:16:52 PDT 2003

On Sat, 13 Sep 2003 17:01:31 +0200
Guy Van Sanden <n.b at> wrote:
> I was looking arround for this, and I found that Kerberos uses DES
> encryption, John (on my sytem) reports it rather weak:
> Yet it seems the consensus that Kerberos is secure, am I missing
> something?
1. Krb5 uses default salted 3DES. In addition, as Tillman wrote, krb5
   allows other ciphers.

2. Even krb4, which uses unsalted DES, is considered difficult to crack
   because it does not expose ciphered text (i.e., passwd). On the wire,
   on the local files.

horio shoichi

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