Symmetric encryption - options?

Hauke Laging mailinglisten at
Tue Mar 13 13:36:18 CET 2012

Am Dienstag, 13. März 2012, 13:15:26 schrieb Robert J. Hansen:
> On 3/13/2012 7:09 AM, Eric Christensen wrote:
> > Because this is symmetric encryption.  You would need to sign the data
> > to get integrity protection.
> This isn't quite right.  He's getting warned about the lack of an MDC,
> which is related to the symmetric algorithm choice.

Would you explain that? Do symmetric algorithms never have an MDC or does just 
CAST5 not (why is it the default then)?

PGP: D44C 6A5B 71B0 427C CED3 025C BD7D 6D27 ECCB 5814
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