[OpenAFS-devel] configurable cryptosystem support

[Jeffrey Altman]

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Marcus Watts wrote:
> I'm in the process of adding "configurable crypto support" to k5ssl,
> part of rxk5 for openafs.  I have the configuration logic working with
> all the features listed below, I just have to merge it in with other
> changes also in the queue (such as windows support, verifykt, etc...)

"kvno -k keytab"  and krb5_server_decrypt_ticket_keytab() have been
committed to the MIT Kerberos tree for 1.7.

> rc4exp is a degraded version of rc4 has an effective key space of 40 bits,
> done by microsoft for export purposes.  I don't know if microsoft still
> does this, but I believe neither heimdal nor mit support this anymore.
> There's certainly no reason to advertise or use this
> with openafs.

Please do not implement this.  Microsoft implemented this in the 90s
prior to receiving world-wide export permission for RC4-HMAC.  There
is no public implementation of this cipher suite.

Jeffrey Altman

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