[FFmpeg-devel] [RFC] Public API for RC4 and DES
Mon Feb 2 18:47:47 CET 2009
On Mon, Feb 02, 2009 at 05:23:35PM +0000, M?ns Rullg?rd wrote:
> Reimar D?ffinger <Reimar.Doeffinger at stud.uni-karlsruhe.de> writes:
> > instead so I can implement 3DES whenever I have some spare time
> > without changing it.
> 3DES uses only 2 keys.
Uh, no. The _effective_ key length only doubles (due to
meet-in-the-middle-attakcs), but each of the
encrypt-decrypt-encrypt stages uses a different key.
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