io.jsonwebtoken.impl.security

Class AesGcmKeyAlgorithm

java.lang.Object

io.jsonwebtoken.impl.security.AesGcmKeyAlgorithm

All Implemented Interfaces:

Identifiable, KeyAlgorithm<SecretKey,SecretKey>, KeyBuilderSupplier<SecretKey,SecretKeyBuilder>, KeyLengthSupplier, SecretKeyAlgorithm

public class AesGcmKeyAlgorithm
extends Object
implements SecretKeyAlgorithm

Since:

0.12.0

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	BLOCK_BYTE_SIZE
protected static int	BLOCK_SIZE
protected static String	DECRYPT_NO_IV
protected boolean	gcm
protected static int	GCM_IV_SIZE
protected int	ivBitLength
protected static String	KEY_ALG_NAME
protected int	keyBitLength
protected int	tagBitLength
static String	TRANSFORMATION

Constructor Summary

Constructors

Constructor and Description
AesGcmKeyAlgorithm(int keyLen)

Method Summary

Methods

Modifier and Type	Method and Description
protected byte[]	assertBytes(byte[] bytes, String type, int requiredBitLen)
protected SecretKey	assertKey(SecretKey key)
protected byte[]	ensureInitializationVector(Request<?> request)
boolean	equals(Object obj)
protected SecretKey	generateCek(KeyRequest<?> request)
SecretKey	getDecryptionKey(DecryptionKeyRequest<SecretKey> request)
KeyResult	getEncryptionKey(KeyRequest<SecretKey> request)
String	getId()
protected AlgorithmParameterSpec	getIvSpec(byte[] iv)
protected String	getJcaName(Request<?> request)
int	getKeyBitLength()
int	hashCode()
protected JcaTemplate	jca()
protected JcaTemplate	jca(Request<?> request)
SecretKeyBuilder	key()
protected static String	lengthMsg(String id, String type, int requiredLengthInBits, long actualLengthInBits)
String	toString()
protected byte[]	validateLength(SecretKey key, int requiredBitLength, boolean propagate)
protected byte[]	withCipher(Cipher cipher, InputStream in, InputStream aad, OutputStream out)
protected void	withCipher(Cipher cipher, InputStream in, OutputStream out)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface io.jsonwebtoken.Identifiable

getId

Methods inherited from interface io.jsonwebtoken.security.KeyBuilderSupplier

key

Methods inherited from interface io.jsonwebtoken.security.KeyLengthSupplier

getKeyBitLength

Field Detail

TRANSFORMATION

public static final String TRANSFORMATION

See Also:

Constant Field Values

KEY_ALG_NAME

protected static final String KEY_ALG_NAME

See Also:

Constant Field Values

BLOCK_SIZE

protected static final int BLOCK_SIZE

See Also:

Constant Field Values

BLOCK_BYTE_SIZE

protected static final int BLOCK_BYTE_SIZE

See Also:

Constant Field Values

GCM_IV_SIZE

protected static final int GCM_IV_SIZE

See Also:

Constant Field Values

DECRYPT_NO_IV

protected static final String DECRYPT_NO_IV

See Also:

Constant Field Values

keyBitLength

protected final int keyBitLength

ivBitLength

protected final int ivBitLength

tagBitLength

protected final int tagBitLength

gcm

protected final boolean gcm

Constructor Detail

AesGcmKeyAlgorithm

public AesGcmKeyAlgorithm(int keyLen)

Method Detail

getEncryptionKey

public KeyResult getEncryptionKey(KeyRequest<SecretKey> request)
                           throws SecurityException

Specified by:

getEncryptionKey in interface KeyAlgorithm<SecretKey,SecretKey>

Throws:

SecurityException

getDecryptionKey

public SecretKey getDecryptionKey(DecryptionKeyRequest<SecretKey> request)
                           throws SecurityException

Specified by:

getDecryptionKey in interface KeyAlgorithm<SecretKey,SecretKey>

Throws:

SecurityException

getKeyBitLength

public int getKeyBitLength()

Specified by:

getKeyBitLength in interface KeyLengthSupplier

key

public SecretKeyBuilder key()

Specified by:

key in interface KeyBuilderSupplier<SecretKey,SecretKeyBuilder>

assertKey

protected SecretKey assertKey(SecretKey key)

lengthMsg

protected static String lengthMsg(String id,
               String type,
               int requiredLengthInBits,
               long actualLengthInBits)

validateLength

protected byte[] validateLength(SecretKey key,
                    int requiredBitLength,
                    boolean propagate)

assertBytes

protected byte[] assertBytes(byte[] bytes,
                 String type,
                 int requiredBitLen)

ensureInitializationVector

protected byte[] ensureInitializationVector(Request<?> request)

getIvSpec

protected AlgorithmParameterSpec getIvSpec(byte[] iv)

withCipher

protected void withCipher(Cipher cipher,
              InputStream in,
              OutputStream out)
                   throws Exception

Throws:

Exception

withCipher

protected byte[] withCipher(Cipher cipher,
                InputStream in,
                InputStream aad,
                OutputStream out)
                     throws Exception

Throws:

Exception

getId

public String getId()

Specified by:

getId in interface Identifiable

jca

protected JcaTemplate jca()

jca

protected JcaTemplate jca(Request<?> request)

getJcaName

protected String getJcaName(Request<?> request)

generateCek

protected SecretKey generateCek(KeyRequest<?> request)

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object