Matthew Byng-Maddick
Mon, 10 Jun 2002 11:23:54 +0100

On Mon, Jun 10, 2002 at 12:00:04PM +0200, Simon Josefsson wrote:
> Werner Koch <> writes:
> > On Fri, 07 Jun 2002 21:36:56 +0200, Simon Josefsson said:
> >> Any plans to add DES-CBC?  Calling
> > 3-key-EDE-DES in CBC mode should work.  If you need plain old DES I
> > will implement it.
> Unfortunately I need plain old DES.  Thanks.

3DES is EDE so that you can use a repeated key as your key material, and
you end up with just plain old DES (for compatibility)

So you specify your 3DES key as <56bit DES Key><56bit DES Key>

I'm not sure quite how to do this with gcrypt, however.


Matthew Byng-Maddick         <>