Mailing List Archive

0.9.0: DSA/ElGamal keysizes
On another thing that's unclear to me: why can't I generate, for example, a
default DSA+ElGamal key with a key size of, say, 1554 bit --- apart from
being asked if I really need such a large keysize, --- if that's just yet
another number? What does "rounded up to 1568 bits" mean?

Forgive me, I'm just a beginner with crypography and I'm just now starting
to peruse the source but I'll be quite content when I'll have been given a
reference to chew on.


Thanks for your work,
ralf
--
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http://www.tmt.de/~stephan/
Re: 0.9.0: DSA/ElGamal keysizes [ In reply to ]
ralf.stephan@fitug.de writes:

> default DSA+ElGamal key with a key size of, say, 1554 bit --- apart from

DSA is limited by design to 1024 bits and it doesn't make sense to
increase it becuase in that case we need a hash algo which yilds
digests longer than 160 bit (and Tiger is not very well analyzed and
not long enough)

> being asked if I really need such a large keysize, --- if that's just yet
> another number? What does "rounded up to 1568 bits" mean?

We need complete bytes.


Werner