Re: openpgp smartcard: ssh auth speed vs. RSA key size
On Thu, 1 Mar 2018 18:18, thomas.jaro...@intra2net.com said: > We found this while creating our keys with 4096 bit and now reverted to 2048 > bit. It's secure enough and the speed hit is almost not noticeable. With a gnuk token and an ed25519 key it will even be much faster than with a RSA 2048 bit key and a real smartcard. Unfortunately the Zeitcontrol card does not support ed25519. Salam-Shalom, Werner -- # Please read: Daniel Ellsberg - The Doomsday Machine # Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz. pgpSMLu93OnY9.pgp Description: PGP signature ___ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users
openpgp smartcard: ssh auth speed vs. RSA key size
Hello together, here's an interesting observation on ssh auth speed when using different key sizes on the openpgp smartcard: RSA 2048 bit key: 0.7s RSA 4096 bit key: 3.1s Card used is an openpgp smartcard V3.3 with gnupg 2.2.4. The ssh key is accessed via gpg-agent. We found this while creating our keys with 4096 bit and now reverted to 2048 bit. It's secure enough and the speed hit is almost not noticeable. The time was measured with: $ time ssh SERVERNAME /bin/true Cheers, Thomas ___ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users
