Does the brute force speed vary significantly between 1024-bit RSA and DSA SSH keys? DSA like gpu keypairs are probably DSA/Elgamal? (Can't find docs)
EDIT: The reason I ask is an instructor that "has been involved with computer security for 10+ years" reported that DSA was much faster to brute force than RSA which I find suspect.
I understand brute forcing keys on average you need to test half of the possible keys. Of course brute-forcing keys is not generally practical and not the best attack vector if you have any other options.