ZKP P256K P256K.KeyAgreement P256K.KeyAgreement.PublicKey uncompressedRepresentation Instance Property uncompressedRepresentation The 65-byte uncompressed serialization of this public key (0x04 prefix + X + Y). iOS 13.0+ macCatalyst 13.0+ macOS 10.15+ tvOS 13.0+ visionOS 1.0+ watchOS 6.0+ var uncompressedRepresentation: Data { get }