symmetric encryption broken

Florian Weimer fw at
Fri Mar 9 23:09:13 CET 2001

"Matthias Urlichs" <smurf at> writes:

> Some ciphers are symmetric. If you DES-encrypt something, and then "encrypt"
> the ciphertext again, you magically get the plaintext back.

The OpenPGP message format removes such properties from the underlying
ciphers if they are present, so as a GnuPG user, you won't notice

More information about the Gnupg-devel mailing list