io.jsonwebtoken.impl.crypto

Class MacSigner

java.lang.Object

io.jsonwebtoken.impl.crypto.MacProvider

io.jsonwebtoken.impl.crypto.MacSigner

All Implemented Interfaces:

Signer

public class MacSigner
extends MacProvider
implements Signer

Field Summary

Fields

Modifier and Type	Field and Description
protected SignatureAlgorithm	alg
static SecureRandom	DEFAULT_SECURE_RANDOM JJWT's default SecureRandom number generator.
protected Key	key

Constructor Summary

Constructors

Constructor and Description
MacSigner(SignatureAlgorithm alg, byte[] key)
MacSigner(SignatureAlgorithm alg, Key key)

Method Summary

Modifier and Type	Method and Description
protected Signature	createSignatureInstance()
protected Mac	doGetMacInstance()
protected Mac	getMacInstance()
protected Signature	getSignatureInstance()
protected boolean	isBouncyCastleAvailable()
byte[]	sign(byte[] data)

Methods inherited from class io.jsonwebtoken.impl.crypto.MacProvider

generateKey, generateKey, generateKey

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_SECURE_RANDOM

public static final SecureRandom DEFAULT_SECURE_RANDOM

JJWT's default SecureRandom number generator. This RNG is initialized using the JVM default as follows:

 static {
     DEFAULT_SECURE_RANDOM = new SecureRandom();
     DEFAULT_SECURE_RANDOM.nextBytes(new byte[64]);
 }
 

nextBytes is called to force the RNG to initialize itself if not already initialized. The byte array is not used and discarded immediately for garbage collection.

alg

protected final SignatureAlgorithm alg

key

protected final Key key

Constructor Detail

MacSigner

public MacSigner(SignatureAlgorithm alg,
                 byte[] key)

MacSigner

public MacSigner(SignatureAlgorithm alg,
                 Key key)

Method Detail

sign

public byte[] sign(byte[] data)

Specified by:

sign in interface Signer

getMacInstance

protected Mac getMacInstance()
                      throws SignatureException

Throws:

SignatureException

doGetMacInstance

protected Mac doGetMacInstance()
                        throws NoSuchAlgorithmException,
                               InvalidKeyException

Throws:

NoSuchAlgorithmException

InvalidKeyException

createSignatureInstance

protected Signature createSignatureInstance()

getSignatureInstance

protected Signature getSignatureInstance()
                                  throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

isBouncyCastleAvailable

protected boolean isBouncyCastleAvailable()