@nimiq/core / ES256PublicKey

Class: ES256PublicKey ​

Defined in: @nimiq/core/types/wasm/web.d.ts:1163

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

Constructors ​

Constructor ​

new ES256PublicKey(bytes): ES256PublicKey

Defined in: @nimiq/core/types/wasm/web.d.ts:1207

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

Methods ​

__getClassname() ​

__getClassname(): string

Defined in: @nimiq/core/types/wasm/web.d.ts:1165

Returns ​

string

compare() ​

compare(other): number

Defined in: @nimiq/core/types/wasm/web.d.ts:1236

Compares this public key to the other public key.

Returns -1 if this public key is smaller than the other public key, 0 if they are equal, and 1 if this public key is larger than the other public key.

Parameters ​

other ​

ES256PublicKey

Returns ​

number

equals() ​

equals(other): boolean

Defined in: @nimiq/core/types/wasm/web.d.ts:1229

Returns if this public key is equal to the other public key.

Parameters ​

other ​

ES256PublicKey

Returns ​

boolean

free() ​

free(): void

Defined in: @nimiq/core/types/wasm/web.d.ts:1164

Returns ​

void

serialize() ​

serialize(): Uint8Array

Defined in: @nimiq/core/types/wasm/web.d.ts:1211

Serializes the public key to a byte array.

Returns ​

Uint8Array

toAddress() ​

toAddress(): Address

Defined in: @nimiq/core/types/wasm/web.d.ts:1225

Gets the public key's address.

Returns ​

Address

toHex() ​

toHex(): string

Defined in: @nimiq/core/types/wasm/web.d.ts:1221

Formats the public key into a hex string.

Returns ​

string

verify() ​

verify(signature, data): boolean

Defined in: @nimiq/core/types/wasm/web.d.ts:1169

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

Parameters ​

signature ​

ES256Signature

data ​

Uint8Array

Returns ​

boolean

deserialize() ​

static deserialize(bytes): ES256PublicKey

Defined in: @nimiq/core/types/wasm/web.d.ts:1175

Deserializes a public key from a byte array.

Throws when the byte array contains less than 33 bytes.

Parameters ​

bytes ​

Uint8Array

Returns ​

ES256PublicKey

fromHex() ​

static fromHex(hex): ES256PublicKey

Defined in: @nimiq/core/types/wasm/web.d.ts:1217

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

fromRaw() ​

static fromRaw(raw_bytes): ES256PublicKey

Defined in: @nimiq/core/types/wasm/web.d.ts:1183

Deserializes a public key from its raw representation.

Parameters ​

raw_bytes ​

Uint8Array

Returns ​

ES256PublicKey

fromSpki() ​

static fromSpki(spki_bytes): ES256PublicKey

Defined in: @nimiq/core/types/wasm/web.d.ts:1179

Deserializes a public key from its SPKI representation.

Parameters ​

spki_bytes ​

Uint8Array

Returns ​

ES256PublicKey