Performance of Yubikey fw >= 5.2.3 and Curve25519 in OpenPGP

[Grzegorz Kulewski]

Hello,

Some time ago Yubico released Yubikeys 5 with new firmware capable of doing Curve25519 in OpenPGP (and not only).

Unfortunately they don't offer any benchmarks so one can't be sure if the performance is decent vs. for example RSA 2048 and 4096. Also it seems that nobody published such benchmarks independently.

Does anybody here have Curve25519 enabled Yubikey and did/could do such benchmarks?

Thank you in advance!

-- 
Grzegorz Kulewski