1024 key with 2048 subkey: how affected?

[Chris Poole]

Hi,
I created a gpg keypair a while ago, when the default was still 1024D.

This has a 4096g encryption subkey, and a 2048D signing subkey.

Since it's now recommended (to my knowledge) to use 2048-bit keys and
above, how does having a 1024-bit keypair affect me?

The encryption and signing is still being done by the subkeys, so is
it simply that they're signed by the parent 1024-bit key, and this key
is easier to fake?


Thanks,

Chris Poole