cryptography/passkey_publickey library

Classes

ParsedPasskeySignature

The decoded fields of a serialized passkey signature.

PasskeyPublicKey

A passkey public key. Mirrors Mysten's PasskeyPublicKey (SIP-9): flag 0x06, 33-byte compressed secp256r1 point.

Constants

PASSKEY_PUBLIC_KEY_SIZE → const int

A passkey (SIP-9) public key: a 33-byte compressed secp256r1 (P-256) point.

PASSKEY_SIGNATURE_SIZE → const int

PASSKEY_UNCOMPRESSED_PUBLIC_KEY_SIZE → const int

Properties

SECP256R1_SPKI_HEADER → Uint8List

Fixed DER SubjectPublicKeyInfo header for a secp256r1/prime256v1 key. The full SPKI is header || 0x04 || x || y (65-byte uncompressed point).

final

Functions

parseDerSPKI(Uint8List derBytes) → Uint8List

Parses a DER SubjectPublicKeyInfo into an uncompressed P-256 point (0x04 || x || y), verifying the fixed secp256r1 header.

parseSerializedPasskeySignature(Uint8List signature) → ParsedPasskeySignature

Parses flag(0x06) || BCS(PasskeyAuthenticator) into its fields.