Module p521

Expand description

P-521 (secp521r1) ECDSA and ECDH.

See SecretKey and PublicKey for the signing, verification and key agreement APIs.

Structs§

ECDH_SHARED_SECRET_SIZE: Size of the raw ECDH shared secret in bytes (66 bytes). Must not be used directly as an encryption key; apply a KDF first.
PUBLIC_KEY_COMPRESSED_SIZE: Size of a compressed P-521 public key in bytes (67 bytes, includes 0x02/0x03 prefix).
PUBLIC_KEY_UNCOMPRESSED_SIZE: Size of an uncompressed P-521 public key in bytes (133 bytes, includes 0x04 prefix).
SECRET_KEY_SIZE: Size of a P-521 secret key in bytes (66 bytes).
SIGNATURE_SIZE: Size of a P-521 ECDSA signature in bytes (132 bytes, r || s).

is_valid_public_key: Returns true when public_key is a valid SEC1 encoding of a point on the P-521 curve.