org.picketlink.json.jose.crypto

Class HMAC

java.lang.Object

org.picketlink.json.jose.crypto.HMAC

public class HMAC
extends Object

Static methods for Hash-based Message Authentication Codes (HMAC).

Author:

Giriraj Sharma

Constructor Summary

Constructors

Constructor and Description
HMAC()

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	compute(SecretKey secretKey, byte[] message) Computes a Hash-based Message Authentication Code (HMAC) for the specified (shared) secret key and message.
static byte[]	compute(String alg, byte[] secret, byte[] message) Computes a Hash-based Message Authentication Code (HMAC) for the specified (shared) secret and message.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HMAC

public HMAC()

Method Detail

compute

public static byte[] compute(String alg,
             byte[] secret,
             byte[] message)

Computes a Hash-based Message Authentication Code (HMAC) for the specified (shared) secret and message.

Parameters:

alg - The Java Cryptography Architecture (JCA) HMAC algorithm name. Must not be null.

secret - The (shared) secret. Must not be null.

message - The message. Must not be null.

Returns:

A MAC service instance.

Throws:

RuntimeException - If the algorithm is not supported or the MAC secret key is invalid.

compute

public static byte[] compute(SecretKey secretKey,
             byte[] message)

Computes a Hash-based Message Authentication Code (HMAC) for the specified (shared) secret key and message.

Parameters:

secretKey - The (shared) secret key, with the appropriate HMAC algorithm. Must not be null.

message - The message. Must not be null.

Returns:

A MAC service instance.

Throws:

RuntimeException - If the algorithm is not supported or the MAC secret key is invalid.