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584 lines
17 KiB
Java
584 lines
17 KiB
Java
// Mozilla has modified this file - see http://hg.mozilla.org/ for details.
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.mozilla.apache.commons.codec.digest;
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import java.io.IOException;
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import java.io.InputStream;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import org.mozilla.apache.commons.codec.binary.Hex;
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import org.mozilla.apache.commons.codec.binary.StringUtils;
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/**
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* Operations to simplify common {@link java.security.MessageDigest} tasks. This class is thread safe.
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*
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* @author Apache Software Foundation
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* @version $Id: DigestUtils.java 1064793 2011-01-28 17:42:55Z ggregory $
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*/
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public class DigestUtils {
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private static final int STREAM_BUFFER_LENGTH = 1024;
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/**
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* Read through an InputStream and returns the digest for the data
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*
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* @param digest
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* The MessageDigest to use (e.g. MD5)
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* @param data
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* Data to digest
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* @return MD5 digest
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* @throws IOException
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* On error reading from the stream
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*/
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private static byte[] digest(MessageDigest digest, InputStream data) throws IOException {
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byte[] buffer = new byte[STREAM_BUFFER_LENGTH];
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int read = data.read(buffer, 0, STREAM_BUFFER_LENGTH);
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while (read > -1) {
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digest.update(buffer, 0, read);
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read = data.read(buffer, 0, STREAM_BUFFER_LENGTH);
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}
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return digest.digest();
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}
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/**
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* Calls {@link StringUtils#getBytesUtf8(String)}
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*
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* @param data
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* the String to encode
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* @return encoded bytes
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*/
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private static byte[] getBytesUtf8(String data) {
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return StringUtils.getBytesUtf8(data);
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}
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/**
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* Returns a <code>MessageDigest</code> for the given <code>algorithm</code>.
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*
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* @param algorithm
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* the name of the algorithm requested. See <a
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* href="http://java.sun.com/j2se/1.3/docs/guide/security/CryptoSpec.html#AppA">Appendix A in the Java
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* Cryptography Architecture API Specification & Reference</a> for information about standard algorithm
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* names.
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* @return An MD5 digest instance.
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* @see MessageDigest#getInstance(String)
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* @throws RuntimeException
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* when a {@link java.security.NoSuchAlgorithmException} is caught.
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*/
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static MessageDigest getDigest(String algorithm) {
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try {
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return MessageDigest.getInstance(algorithm);
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} catch (NoSuchAlgorithmException e) {
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throw new RuntimeException(e.getMessage());
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}
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}
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/**
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* Returns an MD5 MessageDigest.
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*
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* @return An MD5 digest instance.
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* @throws RuntimeException
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* when a {@link java.security.NoSuchAlgorithmException} is caught.
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*/
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private static MessageDigest getMd5Digest() {
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return getDigest("MD5");
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}
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/**
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* Returns an SHA-256 digest.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @return An SHA-256 digest instance.
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* @throws RuntimeException
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* when a {@link java.security.NoSuchAlgorithmException} is caught.
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*/
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private static MessageDigest getSha256Digest() {
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return getDigest("SHA-256");
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}
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/**
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* Returns an SHA-384 digest.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @return An SHA-384 digest instance.
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* @throws RuntimeException
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* when a {@link java.security.NoSuchAlgorithmException} is caught.
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*/
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private static MessageDigest getSha384Digest() {
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return getDigest("SHA-384");
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}
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/**
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* Returns an SHA-512 digest.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @return An SHA-512 digest instance.
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* @throws RuntimeException
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* when a {@link java.security.NoSuchAlgorithmException} is caught.
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*/
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private static MessageDigest getSha512Digest() {
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return getDigest("SHA-512");
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}
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/**
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* Returns an SHA-1 digest.
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*
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* @return An SHA-1 digest instance.
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* @throws RuntimeException
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* when a {@link java.security.NoSuchAlgorithmException} is caught.
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*/
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private static MessageDigest getShaDigest() {
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return getDigest("SHA");
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}
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/**
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* Calculates the MD5 digest and returns the value as a 16 element <code>byte[]</code>.
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*
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* @param data
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* Data to digest
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* @return MD5 digest
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*/
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public static byte[] md5(byte[] data) {
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return getMd5Digest().digest(data);
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}
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/**
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* Calculates the MD5 digest and returns the value as a 16 element <code>byte[]</code>.
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*
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* @param data
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* Data to digest
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* @return MD5 digest
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static byte[] md5(InputStream data) throws IOException {
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return digest(getMd5Digest(), data);
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}
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/**
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* Calculates the MD5 digest and returns the value as a 16 element <code>byte[]</code>.
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*
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* @param data
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* Data to digest
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* @return MD5 digest
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*/
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public static byte[] md5(String data) {
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return md5(getBytesUtf8(data));
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}
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/**
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* Calculates the MD5 digest and returns the value as a 32 character hex string.
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*
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* @param data
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* Data to digest
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* @return MD5 digest as a hex string
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*/
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public static String md5Hex(byte[] data) {
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return Hex.encodeHexString(md5(data));
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}
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/**
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* Calculates the MD5 digest and returns the value as a 32 character hex string.
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*
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* @param data
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* Data to digest
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* @return MD5 digest as a hex string
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static String md5Hex(InputStream data) throws IOException {
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return Hex.encodeHexString(md5(data));
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}
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/**
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* Calculates the MD5 digest and returns the value as a 32 character hex string.
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*
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* @param data
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* Data to digest
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* @return MD5 digest as a hex string
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*/
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public static String md5Hex(String data) {
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return Hex.encodeHexString(md5(data));
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}
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/**
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* Calculates the SHA-1 digest and returns the value as a <code>byte[]</code>.
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*
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* @param data
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* Data to digest
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* @return SHA-1 digest
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*/
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public static byte[] sha(byte[] data) {
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return getShaDigest().digest(data);
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}
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/**
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* Calculates the SHA-1 digest and returns the value as a <code>byte[]</code>.
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*
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* @param data
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* Data to digest
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* @return SHA-1 digest
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static byte[] sha(InputStream data) throws IOException {
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return digest(getShaDigest(), data);
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}
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/**
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* Calculates the SHA-1 digest and returns the value as a <code>byte[]</code>.
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*
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* @param data
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* Data to digest
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* @return SHA-1 digest
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*/
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public static byte[] sha(String data) {
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return sha(getBytesUtf8(data));
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}
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/**
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* Calculates the SHA-256 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-256 digest
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* @since 1.4
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*/
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public static byte[] sha256(byte[] data) {
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return getSha256Digest().digest(data);
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}
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/**
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* Calculates the SHA-256 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-256 digest
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static byte[] sha256(InputStream data) throws IOException {
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return digest(getSha256Digest(), data);
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}
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/**
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* Calculates the SHA-256 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-256 digest
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* @since 1.4
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*/
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public static byte[] sha256(String data) {
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return sha256(getBytesUtf8(data));
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}
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/**
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* Calculates the SHA-256 digest and returns the value as a hex string.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-256 digest as a hex string
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* @since 1.4
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*/
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public static String sha256Hex(byte[] data) {
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return Hex.encodeHexString(sha256(data));
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}
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/**
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* Calculates the SHA-256 digest and returns the value as a hex string.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-256 digest as a hex string
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static String sha256Hex(InputStream data) throws IOException {
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return Hex.encodeHexString(sha256(data));
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}
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/**
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* Calculates the SHA-256 digest and returns the value as a hex string.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-256 digest as a hex string
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* @since 1.4
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*/
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public static String sha256Hex(String data) {
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return Hex.encodeHexString(sha256(data));
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}
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/**
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* Calculates the SHA-384 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-384 digest
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* @since 1.4
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*/
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public static byte[] sha384(byte[] data) {
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return getSha384Digest().digest(data);
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}
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/**
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* Calculates the SHA-384 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-384 digest
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static byte[] sha384(InputStream data) throws IOException {
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return digest(getSha384Digest(), data);
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}
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/**
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* Calculates the SHA-384 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-384 digest
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* @since 1.4
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*/
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public static byte[] sha384(String data) {
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return sha384(getBytesUtf8(data));
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}
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/**
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* Calculates the SHA-384 digest and returns the value as a hex string.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-384 digest as a hex string
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* @since 1.4
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*/
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public static String sha384Hex(byte[] data) {
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return Hex.encodeHexString(sha384(data));
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}
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/**
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* Calculates the SHA-384 digest and returns the value as a hex string.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-384 digest as a hex string
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static String sha384Hex(InputStream data) throws IOException {
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return Hex.encodeHexString(sha384(data));
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}
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/**
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* Calculates the SHA-384 digest and returns the value as a hex string.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-384 digest as a hex string
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* @since 1.4
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*/
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public static String sha384Hex(String data) {
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return Hex.encodeHexString(sha384(data));
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}
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/**
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* Calculates the SHA-512 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-512 digest
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* @since 1.4
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*/
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public static byte[] sha512(byte[] data) {
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return getSha512Digest().digest(data);
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}
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/**
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* Calculates the SHA-512 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-512 digest
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static byte[] sha512(InputStream data) throws IOException {
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return digest(getSha512Digest(), data);
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}
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/**
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* Calculates the SHA-512 digest and returns the value as a <code>byte[]</code>.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-512 digest
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* @since 1.4
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*/
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public static byte[] sha512(String data) {
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return sha512(getBytesUtf8(data));
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}
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/**
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* Calculates the SHA-512 digest and returns the value as a hex string.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-512 digest as a hex string
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* @since 1.4
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*/
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public static String sha512Hex(byte[] data) {
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return Hex.encodeHexString(sha512(data));
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}
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/**
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* Calculates the SHA-512 digest and returns the value as a hex string.
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* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-512 digest as a hex string
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* @throws IOException
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* On error reading from the stream
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* @since 1.4
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*/
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public static String sha512Hex(InputStream data) throws IOException {
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return Hex.encodeHexString(sha512(data));
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}
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|
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/**
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* Calculates the SHA-512 digest and returns the value as a hex string.
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|
* <p>
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* Throws a <code>RuntimeException</code> on JRE versions prior to 1.4.0.
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* </p>
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*
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* @param data
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* Data to digest
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* @return SHA-512 digest as a hex string
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* @since 1.4
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*/
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public static String sha512Hex(String data) {
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return Hex.encodeHexString(sha512(data));
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}
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|
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/**
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* Calculates the SHA-1 digest and returns the value as a hex string.
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*
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* @param data
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* Data to digest
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* @return SHA-1 digest as a hex string
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*/
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public static String shaHex(byte[] data) {
|
|
return Hex.encodeHexString(sha(data));
|
|
}
|
|
|
|
/**
|
|
* Calculates the SHA-1 digest and returns the value as a hex string.
|
|
*
|
|
* @param data
|
|
* Data to digest
|
|
* @return SHA-1 digest as a hex string
|
|
* @throws IOException
|
|
* On error reading from the stream
|
|
* @since 1.4
|
|
*/
|
|
public static String shaHex(InputStream data) throws IOException {
|
|
return Hex.encodeHexString(sha(data));
|
|
}
|
|
|
|
/**
|
|
* Calculates the SHA-1 digest and returns the value as a hex string.
|
|
*
|
|
* @param data
|
|
* Data to digest
|
|
* @return SHA-1 digest as a hex string
|
|
*/
|
|
public static String shaHex(String data) {
|
|
return Hex.encodeHexString(sha(data));
|
|
}
|
|
}
|