Package org.jose4j.jwe

Class AesGcmKeyEncryptionAlgorithm

java.lang.Object

org.jose4j.jwa.AlgorithmInfo

org.jose4j.jwe.AesGcmKeyEncryptionAlgorithm

All Implemented Interfaces:

Algorithm, KeyManagementAlgorithm

Direct Known Subclasses:

AesGcmKeyEncryptionAlgorithm.Aes128Gcm, AesGcmKeyEncryptionAlgorithm.Aes192Gcm, AesGcmKeyEncryptionAlgorithm.Aes256Gcm

public class AesGcmKeyEncryptionAlgorithm
extends AlgorithmInfo
implements KeyManagementAlgorithm

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AesGcmKeyEncryptionAlgorithm.Aes128Gcm
static class	AesGcmKeyEncryptionAlgorithm.Aes192Gcm
static class	AesGcmKeyEncryptionAlgorithm.Aes256Gcm

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	IV_BYTE_LENGTH
private int	keyByteLength
private SimpleAeadCipher	simpleAeadCipher
private static final int	TAG_BYTE_LENGTH

Fields inherited from class org.jose4j.jwa.AlgorithmInfo

log

Constructor Summary

Constructors

Constructor	Description
AesGcmKeyEncryptionAlgorithm(String alg, int keyByteLength)

Method Summary

Modifier and Type	Method	Description
boolean	isAvailable()
Key	manageForDecrypt(CryptoPrimitive cryptoPrimitive, byte[] encryptedKey, ContentEncryptionKeyDescriptor cekDesc, Headers headers, ProviderContext providerContext)
ContentEncryptionKeys	manageForEncrypt(Key managementKey, ContentEncryptionKeyDescriptor cekDesc, Headers headers, byte[] cekOverride, ProviderContext providerContext)
CryptoPrimitive	prepareForDecrypt(Key managementKey, Headers headers, ProviderContext providerContext)
void	validateDecryptionKey(Key managementKey, ContentEncryptionAlgorithm contentEncryptionAlg)
void	validateEncryptionKey(Key managementKey, ContentEncryptionAlgorithm contentEncryptionAlg)
(package private) void	validateKey(Key managementKey)

Methods inherited from class org.jose4j.jwa.AlgorithmInfo

getAlgorithmIdentifier, getJavaAlgorithm, getKeyPersuasion, getKeyType, setAlgorithmIdentifier, setJavaAlgorithm, setKeyPersuasion, setKeyType, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jose4j.jwa.Algorithm

getAlgorithmIdentifier, getJavaAlgorithm, getKeyPersuasion, getKeyType

Field Details

TAG_BYTE_LENGTH

private static final int TAG_BYTE_LENGTH

See Also:

• Constant Field Values

IV_BYTE_LENGTH

private static final int IV_BYTE_LENGTH

See Also:

• Constant Field Values

simpleAeadCipher

private SimpleAeadCipher simpleAeadCipher

keyByteLength

private int keyByteLength

Constructor Details

AesGcmKeyEncryptionAlgorithm

public AesGcmKeyEncryptionAlgorithm(String alg,
 int keyByteLength)

Method Details

manageForEncrypt

public ContentEncryptionKeys manageForEncrypt(Key managementKey,
 ContentEncryptionKeyDescriptor cekDesc,
 Headers headers,
 byte[] cekOverride,
 ProviderContext providerContext)
                                       throws JoseException

Specified by:

manageForEncrypt in interface KeyManagementAlgorithm

Throws:

JoseException

prepareForDecrypt

public CryptoPrimitive prepareForDecrypt(Key managementKey,
 Headers headers,
 ProviderContext providerContext)
                                  throws JoseException

Specified by:

prepareForDecrypt in interface KeyManagementAlgorithm

Throws:

JoseException

manageForDecrypt

public Key manageForDecrypt(CryptoPrimitive cryptoPrimitive,
 byte[] encryptedKey,
 ContentEncryptionKeyDescriptor cekDesc,
 Headers headers,
 ProviderContext providerContext)
                     throws JoseException

Specified by:

manageForDecrypt in interface KeyManagementAlgorithm

Throws:

JoseException

validateEncryptionKey

public void validateEncryptionKey(Key managementKey,
 ContentEncryptionAlgorithm contentEncryptionAlg)
                           throws InvalidKeyException

Specified by:

validateEncryptionKey in interface KeyManagementAlgorithm

Throws:

InvalidKeyException

validateDecryptionKey

public void validateDecryptionKey(Key managementKey,
 ContentEncryptionAlgorithm contentEncryptionAlg)
                           throws InvalidKeyException

Specified by:

validateDecryptionKey in interface KeyManagementAlgorithm

Throws:

InvalidKeyException

validateKey

void validateKey(Key managementKey)
          throws InvalidKeyException

Throws:

InvalidKeyException

isAvailable

public boolean isAvailable()

Specified by:

isAvailable in interface Algorithm