chainkey_platform_interface 0.2.0

Common platform interface for the chainkey federated plugin.

0.2.0

• Add P256Signature.fromDer ASN.1 DER unpacker.
• Add BIP-62 / EIP-2 low-S normalizer for P-256 signatures.
• Add P256PublicKey SEC1 point formatter, SPKI parser, and on-curve validation.
• Add Wycheproof and EIP-7212 test vectors for all crypto primitives.

0.1.1

• Add typed exception hierarchy (ChainkeyException, UserCancelledException, KeyPermanentlyInvalidatedException, BiometricsUnavailableException, HardwareEnclaveException, PasskeyException).
• Add deterministic platform error mapping (ChainkeyException.fromPlatformException).
• Add core domain models for cryptographic primitives (P256Signature, PasskeyCredential, BiometricPromptOptions).
• Add Pigeon IDL contracts for HardwareEnclaveHostApi and WebAuthnHostApi.

0.1.0

• Initial release of chainkey federated plugin package.