In message <[EMAIL PROTECTED]> on Wed, 24 Sep 2003 18:13:00 +0200, "Dr. Stephen
Henson" <[EMAIL PROTECTED]> said:
steve> On Wed, Sep 24, 2003, Lule Chen wrote:
steve>
steve> > Thanks, Dr. Stephen:
steve> >
steve> > Another question: what is the key length, 64 bits or 128 bits?
steve> >
steve>
steve> Well you originally said PKCS#5 v1.5 and the only algorithm defined in there
steve> is DES-CBC which is 56 bits.
Note for Lule Chen: DES-CBC keys may appear to be 64 bits, but that's
because the most significant bit in every octet is a parity bit, and
this not really part of the key. 8 octets => 64 bits, minus 8 parity
bits gives you 56 actual key bits.
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