Verifying?

[baver11]

Is it possible to verify with this library also?

something like verify(signature, message, publicKey);

[rev22]

That isn't implemented by this library.

I suppose you are looking for a public-key signature system based on the same elliptic curve, for example Ed25519

The code for implementing such a system would be quite larger so it would go beyond the scope of this project, however I'll definitely add a link to a good Javascript implementation, if/when it exists. ☺