Class: ES256PublicKey ​

The non-secret (public) part of an ES256 asymmetric key pair that is typically used to digitally verify or encrypt data.

Constructors ​

new ES256PublicKey() ​

new ES256PublicKey(bytes): ES256PublicKey

Creates a new public key from a byte array.

Compatible with the -7 COSE algorithm identifier.

Example ​

javascript
// Create/register a credential with the Webauthn API:
const cred = await navigator.credentials.create({
    publicKey: {
        pubKeyCredParams: [{
            type: "public-key",
            alg: -7, // ES256 = ECDSA over P-256 with SHA-256
       }],
       // ...
    },
});

// Then create an instance of ES256PublicKey from the credential response:
const publicKey = new Nimiq.ES256PublicKey(new Uint8Array(cred.response.getPublicKey()));

Parameters ​

• bytes: Uint8Array

Returns ​

ES256PublicKey

Defined in ​

web.d.ts:1084

Methods ​

__getClassname() ​

__getClassname(): string

Returns ​

string

Defined in ​

web.d.ts:1032

free() ​

free(): void

Returns ​

void

Defined in ​

web.d.ts:1028

serialize() ​

serialize(): Uint8Array

Serializes the public key to a byte array.

Returns ​

Uint8Array

Defined in ​

web.d.ts:1089

toAddress() ​

toAddress(): Address

Gets the public key's address.

Returns ​

Address

Defined in ​

web.d.ts:1107

toHex() ​

toHex(): string

Formats the public key into a hex string.

Returns ​

string

Defined in ​

web.d.ts:1102

verify() ​

verify(signature, data): boolean

Verifies that a signature is valid for this public key and the provided data.

Parameters ​

• signature: ES256Signature

• data: Uint8Array

Returns ​

boolean

Defined in ​

web.d.ts:1039

fromHex() ​

static fromHex(hex): ES256PublicKey

Parses a public key from its hex representation.

Throws when the string is not valid hex format or when it represents less than 33 bytes.

Parameters ​

• hex: string

Returns ​

ES256PublicKey

Defined in ​

web.d.ts:1097

fromRaw() ​

static fromRaw(raw_bytes): ES256PublicKey

Deserializes a public key from its raw representation.

Parameters ​

• raw_bytes: Uint8Array

Returns ​

ES256PublicKey

Defined in ​

web.d.ts:1059

fromSpki() ​

static fromSpki(spki_bytes): ES256PublicKey

Deserializes a public key from its SPKI representation.

Parameters ​

• spki_bytes: Uint8Array

Returns ​

ES256PublicKey

Defined in ​

web.d.ts:1053

unserialize() ​

static unserialize(bytes): ES256PublicKey

Deserializes a public key from a byte array.

Throws when the byte array contains less than 33 bytes.

Parameters ​

• bytes: Uint8Array

Returns ​

ES256PublicKey

Defined in ​

web.d.ts:1047