/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.wildfly.security.password.impl;
import static org.wildfly.common.math.HashMath.multiHashOrdered;
import static org.wildfly.security._private.ElytronMessages.log;
import java.io.NotSerializableException;
import java.io.ObjectInputStream;
import java.nio.charset.StandardCharsets;
import java.security.InvalidKeyException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import java.util.Arrays;
import org.wildfly.security.password.interfaces.SimpleDigestPassword;
import org.wildfly.security.password.spec.ClearPasswordSpec;
import org.wildfly.security.password.spec.HashPasswordSpec;
/**
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
*/
class SimpleDigestPasswordImpl extends AbstractPasswordImpl implements SimpleDigestPassword {
private static final long serialVersionUID = -5673285507422174313L;
private final String algorithm;
private final byte[] digest;
SimpleDigestPasswordImpl(final String algorithm, final byte[] digest) {
this.algorithm = algorithm;
this.digest = digest;
}
SimpleDigestPasswordImpl(final String algorithm, final HashPasswordSpec spec) {
this(algorithm, spec.getDigest().clone());
}
SimpleDigestPasswordImpl(final SimpleDigestPassword password) {
this(password.getAlgorithm(), password.getDigest().clone());
}
SimpleDigestPasswordImpl(final String algorithm, final ClearPasswordSpec spec) throws InvalidKeySpecException {
this(algorithm, getDigestOfKS(algorithm, spec.getEncodedPassword()));
}
SimpleDigestPasswordImpl(final String algorithm, final char[] chars) throws InvalidKeySpecException {
this(algorithm, getDigestOfKS(algorithm, chars));
}
<S extends KeySpec> S getKeySpec(final Class<S> keySpecType) throws InvalidKeySpecException {
if (keySpecType.isAssignableFrom(HashPasswordSpec.class)) {
return keySpecType.cast(new HashPasswordSpec(digest.clone()));
}
throw new InvalidKeySpecException();
}
static byte[] getDigestOfKS(String algorithm, char[] chars) throws InvalidKeySpecException {
try {
return getDigestOf(algorithm, chars);
} catch (NoSuchAlgorithmException e) {
throw log.invalidKeySpecNoSuchMessageDigestAlgorithm(algorithm);
}
}
static byte[] getDigestOf(String algorithm, char[] chars) throws NoSuchAlgorithmException {
final MessageDigest md = getMessageDigest(algorithm);
md.update(new String(chars).getBytes(StandardCharsets.UTF_8));
return md.digest();
}
static MessageDigest getMessageDigest(String algorithm) throws NoSuchAlgorithmException {
switch (algorithm) {
case ALGORITHM_SIMPLE_DIGEST_MD2: return MessageDigest.getInstance("MD2");
case ALGORITHM_SIMPLE_DIGEST_MD5: return MessageDigest.getInstance("MD5");
case ALGORITHM_SIMPLE_DIGEST_SHA_1: return MessageDigest.getInstance("SHA-1");
case ALGORITHM_SIMPLE_DIGEST_SHA_256: return MessageDigest.getInstance("SHA-256");
case ALGORITHM_SIMPLE_DIGEST_SHA_384: return MessageDigest.getInstance("SHA-384");
case ALGORITHM_SIMPLE_DIGEST_SHA_512: return MessageDigest.getInstance("SHA-512");
default: throw log.noSuchAlgorithmInvalidAlgorithm(algorithm);
}
}
boolean verify(final char[] guess) throws InvalidKeyException {
try {
return Arrays.equals(digest, getDigestOf(algorithm, guess));
} catch (NoSuchAlgorithmException e) {
throw log.invalidKeyNoSuchMessageDigestAlgorithm(algorithm);
}
}
<T extends KeySpec> boolean convertibleTo(final Class<T> keySpecType) {
return keySpecType.isAssignableFrom(HashPasswordSpec.class);
}
public String getAlgorithm() {
return algorithm;
}
public byte[] getDigest() {
return digest.clone();
}
public int hashCode() {
return multiHashOrdered(Arrays.hashCode(digest), algorithm.hashCode());
}
public boolean equals(final Object obj) {
if (! (obj instanceof SimpleDigestPasswordImpl)) {
return false;
}
SimpleDigestPasswordImpl other = (SimpleDigestPasswordImpl) obj;
return algorithm.equals(other.algorithm) && Arrays.equals(digest, other.digest);
}
private void readObject(ObjectInputStream ignored) throws NotSerializableException {
throw new NotSerializableException();
}
Object writeReplace() {
return SimpleDigestPassword.createRaw(algorithm, digest);
}
public SimpleDigestPasswordImpl clone() {
return this;
}
}