org.apache.wss4j.common.util

Class KeyUtils

java.lang.Object

org.apache.wss4j.common.util.KeyUtils

public final class KeyUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static byte[]	generateDigest(byte[] inputBytes) Generate a (SHA1) digest of the input bytes.
static Cipher	getCipherInstance(String cipherAlgo) Translate the "cipherAlgo" URI to a JCE ID, and return a javax.crypto.Cipher instance of this type.
static KeyGenerator	getKeyGenerator(String algorithm)
static int	getKeyLength(String algorithm) Returns the length of the key in # of bytes
static SecretKey	prepareSecretKey(String algorithm, byte[] rawKey) Convert the raw key bytes into a SecretKey object of type algorithm.

Methods inherited from class java.lang.Object

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

Method Detail

getKeyLength

public static int getKeyLength(String algorithm)
                        throws WSSecurityException

Returns the length of the key in # of bytes

Parameters:

algorithm -

Returns:

the key length

Throws:

WSSecurityException

prepareSecretKey

public static SecretKey prepareSecretKey(String algorithm,
                                         byte[] rawKey)

Convert the raw key bytes into a SecretKey object of type algorithm.

getKeyGenerator

public static KeyGenerator getKeyGenerator(String algorithm)
                                    throws WSSecurityException

Throws:

WSSecurityException

getCipherInstance

public static Cipher getCipherInstance(String cipherAlgo)
                                throws WSSecurityException

Translate the "cipherAlgo" URI to a JCE ID, and return a javax.crypto.Cipher instance of this type.

Throws:

WSSecurityException

generateDigest

public static byte[] generateDigest(byte[] inputBytes)
                             throws WSSecurityException

Generate a (SHA1) digest of the input bytes. The MessageDigest instance that backs this method is cached for efficiency.

Parameters:

inputBytes - the bytes to digest

Returns:

the digest of the input bytes

Throws:

WSSecurityException