session key curiosity ???
wk at gnupg.org
Thu Sep 29 11:43:51 CEST 2005
On Wed, 28 Sep 2005 16:42:06 -0700, said:
> gpg --override-session-key
> 2:1568A79A26ABCB75C294AA07AB73C53A7D168F2B898F93BE c:\r\s.txt
> when retyping, i accidentally changed the last character to an F
> instead of an E
> and it *still* worked!
> should this be?
Yes. With DES only the high 7 bits of a byte are used and the low
order bit is use as a parity bit. We don't check that parity bit - it
is not required these days where everything is 8-bit clean. This is
also the reason why we calculate with 56 or 168 bits when it comes to
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