Don't hold me to this but I believe that a (single) DES key holds 56 bits
worth of useful data + a parity bit per 7 bits which would account for the
extra keysize.
Dave
-----Original Message-----
From: Josh Berezin [mailto:[EMAIL PROTECTED]]
Sent: 18 January 2000 22:49
To: [EMAIL PROTECTED]
Subject: 3DES - 168 or 192 bits?
It's like this: I'm trying to figure out exactly what we're using here, so
we can report it to Marketing-folk. I didn't write any of the SSL code, I'm
just asking it a few questions.
SSL_CIPHER_description reports we're using 3DES(168). Makes sense.
SSL_CIPHER_get_bits() reports we're using 192 bits. (both in bits_used and
bits_possible)
So, which is right? 168 seems to make more sense, since DES is usually 56
bits, and 168 is 56 * 3. But I guess it could be 192 == 64 * 3. What is the
explanation for the discrepancy?
josh
______________________________________________________________________
OpenSSL Project http://www.openssl.org
User Support Mailing List [EMAIL PROTECTED]
Automated List Manager [EMAIL PROTECTED]
