Structure

P256K.KeyAgreement.PublicKey

secp256k1 ECDH public key, accepted by sharedSecretFromKeyAgreement(with:format:) to compute a SharedSecret.

iOS 13.0+
macCatalyst 13.0+
macOS 10.15+
tvOS 13.0+
visionOS 1.0+
watchOS 6.0+

struct PublicKey

Overview

Semantically the same 33- or 65-byte SEC1 encoded public key used by ECDSA and Schnorr; the Swift type is distinct only so that the compiler routes calls to the ECDH-specific Diffie-Hellman method instead of a signing API.

Topics

Construction

init<D>(dataRepresentation: D, format: P256K.Format) throws
Creates a secp256k1 ECDH public key from serialized bytes.
init<Bytes>(x963Representation: Bytes) throws
Creates a secp256k1 ECDH public key from an ANSI X9.63 representation.
init<Bytes>(derRepresentation: Bytes) throws
Creates a secp256k1 public key for key agreement from a Distinguished Encoding Rules (DER) encoded representation.

Serialized Forms

var dataRepresentation: Data
The serialized public key bytes as Data, in the key’s P256K.Format.
var uncompressedRepresentation: Data
The 65-byte uncompressed serialization of this public key (0x04 prefix
var xonly: P256K.KeyAgreement.XonlyKey
The 32-byte x-only public key (X coordinate only) derived from this key.