Session Key Questions

Werner Koch wk at
Tue Oct 21 16:37:59 CEST 2008

On Tue, 21 Oct 2008 16:23, kevhilton at said:
> When the session key is randomly generated (asymmetric encryption),
> how large is the session key?  Is the length set or does it depend on
> other parameter such as the length of the DSA/RSA key or hash?

It depends on the key length of the cipher algo.  Thus it is 128 bit for
AES, 256 bit for AES256, 128 bit for CAST 5 and so forth.  Blowfish is
used with 128 bit as specified by OpenPGP.



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