Recommended key size for life long key

Johan Wevers johanw at
Sat Aug 31 20:36:43 CEST 2013

On 31-8-2013 11:46, Ole Tange wrote:

> Why not recommend a key size that will not be broken for the rest of
> your natural life?

In that case, I assume 3072bit is sufficient. Making the public/secret
key a little stronger than the session keys (128 bit for most symmetric
ciphers) makes sense (breaking the secret key lets an attacker read all
messages, breaking a session key only one so the pubkey is more
valuable) but making it extremely much  stronger is useless. Attackers
will go for the weakest link in the chain.

Met vriendelijke groet / With kind regards,
Johan Wevers

PGP/GPG public keys at

More information about the Gnupg-users mailing list