io.jsonwebtoken.impl.crypto

Class RsaSigner

java.lang.Object

io.jsonwebtoken.impl.crypto.RsaProvider

io.jsonwebtoken.impl.crypto.RsaSigner

All Implemented Interfaces:

Signer

public class RsaSigner
extends RsaProvider
implements Signer

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
RsaSigner(SignatureAlgorithm alg, java.security.Key key)

Method Summary

Methods

Modifier and Type	Method and Description
protected byte[]	doSign(byte[] data)
protected java.security.Signature	getSignatureInstance()
protected boolean	isBouncyCastleAvailable()
byte[]	sign(byte[] data)

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

createSignatureInstance, doSetParameter, generateKeyPair, generateKeyPair, generateKeyPair, generateKeyPair, generateKeyPair, setParameter

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 java.security.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 java.security.Key key

Constructor Detail

RsaSigner

public RsaSigner(SignatureAlgorithm alg,
         java.security.Key key)

Method Detail

sign

public byte[] sign(byte[] data)

Specified by:

sign in interface Signer

doSign

protected byte[] doSign(byte[] data)
                 throws java.security.InvalidKeyException,
                        java.security.SignatureException

Throws:

java.security.InvalidKeyException

java.security.SignatureException

getSignatureInstance

protected java.security.Signature getSignatureInstance()
                                                throws java.security.NoSuchAlgorithmException

Throws:

java.security.NoSuchAlgorithmException

isBouncyCastleAvailable

protected boolean isBouncyCastleAvailable()