Is it safe to rename file.gpg to `md5sum file`?

[Robert J. Hansen]

On 12/5/2012 6:10 PM, Max Parmer wrote:
> Here's my cite on the CAST weakness:
> http://www.schneier.com/paper-relatedkey.html

This falls squarely into the range of theoretical breaks.  Notice that
the attack requires 2**17 chosen plaintexts to all be encrypted with the
same symmetric key.  Since GnuPG uses disposable session keys, this is
pretty much completely irrelevant to GnuPG usage.