GNUPG and Cast6
dshaw at jabberwocky.com
Thu Aug 29 22:28:15 CEST 2013
On Aug 29, 2013, at 2:01 PM, Csabi <csabi.hlw at gmail.com> wrote:
> Hi all,
> Why does not support GNUPG the CAST6 (256 bit key) variant of the CAST algorithm?
> It supports the CAST5 (128 bit key) variant and it is the default cipher.
There never was a really good reason to support it. The OpenPGP working group added TWOFISH as a 256-bit cipher (and not incidentally a 128-bit blocksize), and later AES. There is nothing specifically wrong with CAST6, but given that OpenPGP has both TWOFISH and AES, there isn't really a pressing reason to include CAST6 too.
More information about the Gnupg-users