Symmetric encryption - options?

Eric Christensen eric at
Tue Mar 13 12:09:07 CET 2012

On Mar 13, 2012 6:23 AM, "jpemail2001-321 at" <
jpemail2001-321 at> wrote:

> gpg: CAST5 encrypted data
> gpg: encrypted with 1 passphrase
> Test message
> gpg: WARNING: message was not integrity protected
> What does mean CAST5 and is it a safe alghorithmus? Why not RSA?

It isn't RSA because this is symmetric encryption.  CAST5 is a 128-bit
block cypher.

> And why was the message not integrity protected and how to protect it?

Because this is symmetric encryption.  You would need to sign the data to
get integrity protection.

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