CompressPubkey encodes a public key to the 33-byte compressed format.

Ecrecover returns the uncompressed public key that created the given signature.

GenerateKey generate a key.

Keccak256 calculates and returns the Keccak256 hash of the input data.

S256 returns an instance of the secp256k1 curve.

Sign calculates an ECDSA signature.

VerifySignature checks that the given public key created signature over hash.