package bls12-381

Type of the public keys

The size of a serialized value pk

The size of a serialized value signature

Build a value of type pk without performing any check on the input (hence the unsafe prefix because it might not give a correct inhabitant of the type pk). It is safe to use this function when verifying a signature as the signature function verifies if the point is in the prime subgroup. Using unsafe_pk_of_bytes removes a verification performed twice when used pk_of_bytes_exn or pk_of_bytes_opt.

The expected bytes format are the compressed form of a point on G1.

Build a value of type pk safely, i.e. the function checks the bytes given in parameters represents a point on the curve and in the prime subgroup. Raise Invalid_argument if the bytes are not in the correct format or does not represent a point in the prime subgroup.

The expected bytes format are the compressed form of a point on G1.

Build a value of type pk safely, i.e. the function checks the bytes given in parameters represents a point on the curve and in the prime subgroup. Return None if the bytes are not in the correct format or does not represent a point in the prime subgroup.

The expected bytes format are the compressed form of a point on G1.

Returns a bytes representation of a value of type pk. The output is the compressed form of the point G1.t the pk represents.

derive_pk sk derives the corresponding public key of sk.

Type of the signatures

Build a value of type signature without performing any check on the input (hence the unsafe prefix because it might not give a correct inhabitant of the type signature). It is safe to use this function when verifying a signature as the signature function verifies if the point is in the prime subgroup. Using unsafe_signature_of_bytes removes a verification performed twice when used signature_of_bytes_exn or signature_of_bytes_opt.

The expected bytes format are the compressed form of a point on G2.

Build a value of type signature safely, i.e. the function checks the bytes given in parameters represents a point on the curve and in the prime subgroup. Raise Invalid_argument if the bytes are not in the correct format or does not represent a point in the prime subgroup.

The expected bytes format are the compressed form of a point on G2.

Build a value of type signature safely, i.e. the function checks the bytes given in parameters represents a point on the curve and in the prime subgroup. Return None if the bytes are not in the correct format or does not represent a point in the prime subgroup.

The expected bytes format are the compressed form of a point on G2.

Returns a bytes representation of a value of type signature. The output is the compressed form of a point G2.t the signature represents.

aggregate_signature_opt signatures aggregates the signatures signatures, following section 2.8. Return None if INVALID is expected in the specification

Basic scheme described in section 3.1

Augmentation scheme described in section 3.2

Proof of possession scheme described in section 3.3