Package com.google.crypto.tink.aead.internal

Class AesGcmJceUtil

java.lang.Object

com.google.crypto.tink.aead.internal.AesGcmJceUtil

public final class AesGcmJceUtil
extends java.lang.Object

Helper functions for AES-GCM using JCE.

Field Summary

Fields

Modifier and Type	Field	Description
static int	IV_SIZE_IN_BYTES
static int	TAG_SIZE_IN_BYTES

Method Summary

Modifier and Type	Method	Description
static java.security.spec.AlgorithmParameterSpec	getParams(byte[] iv)
static java.security.spec.AlgorithmParameterSpec	getParams(byte[] buf, int offset, int len)
static javax.crypto.SecretKey	getSecretKey(byte[] key)
static javax.crypto.Cipher	getThreadLocalCipher()	Returns a thread-local instance of the AES-GCM cipher.

Methods inherited from class java.lang.Object

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

Field Detail

IV_SIZE_IN_BYTES

public static final int IV_SIZE_IN_BYTES

See Also:

Constant Field Values

TAG_SIZE_IN_BYTES

public static final int TAG_SIZE_IN_BYTES

See Also:

Constant Field Values

Method Detail

getThreadLocalCipher

public static javax.crypto.Cipher getThreadLocalCipher()

Returns a thread-local instance of the AES-GCM cipher.

getSecretKey

public static javax.crypto.SecretKey getSecretKey(byte[] key)
                                           throws java.security.GeneralSecurityException

Throws:

java.security.GeneralSecurityException

getParams

public static java.security.spec.AlgorithmParameterSpec getParams(byte[] iv)

getParams

public static java.security.spec.AlgorithmParameterSpec getParams(byte[] buf,
                                                                  int offset,
                                                                  int len)