Tezos_crypto.P256SourceTezos - P256 cryptography
include S.SIGNATURE with type watermark = Bytes.tinclude Tezos_stdlib.Compare.S with type t := tdeterministic_nonce sk msg returns a nonce that is determined by sk and msg
deterministic_nonce_hash sk msg returns the BLAKE2b hash of a nonce that is determined by sk and msg.
In other words, Blake2b.digest (deterministic_nonce sk msg) = deterministic_nonce_hash sk msg