org.w3c.rdf.digest
Class DigestUtil

java.lang.Object
  |
  +--org.w3c.rdf.digest.DigestUtil

public class DigestUtil

extends java.lang.Object

This class is a container of static functions for manipulating cryptographic digests.

See Also:

Digestable, Digest

Constructor Summary

DigestUtil()

Method Summary

static Digest	computeDigest(java.lang.String alg, byte[] b)
static Digest	computeDigest(java.lang.String alg, java.lang.String str)
static Digest	createFromBytes(java.lang.String alg, byte[] digest)
static int	digestBytes2HashCode(byte[] digest)
static boolean	equal(byte[] d1, byte[] d2) Tests the equality of digests
static boolean	equal(Digest d1, Digest d2)
static int	getHashCode(Digest d)
static java.lang.String	toHexString(byte[] buf)
static java.lang.String	toHexString(Digest d)
static void	xor(byte[] d1, byte[] d2)
static void	xor(byte[] d1, byte[] d2, int shift)

Methods inherited from class java.lang.Object

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

Constructor Detail

DigestUtil

public DigestUtil()

Method Detail

computeDigest

public static Digest computeDigest(java.lang.String alg,
                                   java.lang.String str)
                            throws java.security.NoSuchAlgorithmException

computeDigest

public static Digest computeDigest(java.lang.String alg,
                                   byte[] b)
                            throws java.security.NoSuchAlgorithmException

createFromBytes

public static Digest createFromBytes(java.lang.String alg,
                                     byte[] digest)
                              throws DigestException

getHashCode

public static int getHashCode(Digest d)
                       throws DigestException

digestBytes2HashCode

public static int digestBytes2HashCode(byte[] digest)

xor

public static void xor(byte[] d1,
                       byte[] d2)

xor

public static void xor(byte[] d1,
                       byte[] d2,
                       int shift)

equal

public static boolean equal(Digest d1,
                            Digest d2)

equal

public static boolean equal(byte[] d1,
                            byte[] d2)

Tests the equality of digests

toHexString

public static java.lang.String toHexString(Digest d)
                                    throws DigestException

toHexString

public static java.lang.String toHexString(byte[] buf)