V0.Of_V_latestval public_key_hash :
Signature.V_latest.Public_key_hash.t ->
Mavryk_crypto__.Signature_v0.public_key_hash optionval public_key :
Signature.V_latest.Public_key.t ->
Mavryk_crypto__.Signature_v0.public_key optionval secret_key :
Signature.V_latest.Secret_key.t ->
Mavryk_crypto__.Signature_v0.secret_key optionval signature :
Signature.V_latest.t ->
Mavryk_crypto__.Signature_v0.signature option