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Apache XML Security for Java supports XML-Signature Syntax and Processing,
W3C Recommendation 12 February 2002, and XML Encryption Syntax and
Processing, W3C Recommendation 10 December 2002. As of version 1.4,
the library supports the standard Java API JSR-105: XML Digital Signature APIs.
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.xml.security.algorithms;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.xml.security.encryption.XMLCipher;
import org.apache.xml.security.signature.XMLSignature;
import org.w3c.dom.Element;
/**
* This class maps algorithm identifier URIs to JAVA JCE class names.
*/
public class JCEMapper {
/** {@link org.apache.commons.logging} logging facility */
private static org.apache.commons.logging.Log log =
org.apache.commons.logging.LogFactory.getLog(JCEMapper.class);
private static Map algorithmsMap =
new ConcurrentHashMap();
private static String providerName = null;
/**
* Method register
*
* @param id
* @param algorithm
*/
public static void register(String id, Algorithm algorithm) {
algorithmsMap.put(id, algorithm);
}
/**
* This method registers the default algorithms.
*/
public static void registerDefaultAlgorithms() {
algorithmsMap.put(
MessageDigestAlgorithm.ALGO_ID_DIGEST_NOT_RECOMMENDED_MD5,
new Algorithm("", "MD5", "MessageDigest")
);
algorithmsMap.put(
MessageDigestAlgorithm.ALGO_ID_DIGEST_RIPEMD160,
new Algorithm("", "RIPEMD160", "MessageDigest")
);
algorithmsMap.put(
MessageDigestAlgorithm.ALGO_ID_DIGEST_SHA1,
new Algorithm("", "SHA-1", "MessageDigest")
);
algorithmsMap.put(
MessageDigestAlgorithm.ALGO_ID_DIGEST_SHA256,
new Algorithm("", "SHA-256", "MessageDigest")
);
algorithmsMap.put(
MessageDigestAlgorithm.ALGO_ID_DIGEST_SHA384,
new Algorithm("", "SHA-384", "MessageDigest")
);
algorithmsMap.put(
MessageDigestAlgorithm.ALGO_ID_DIGEST_SHA512,
new Algorithm("", "SHA-512", "MessageDigest")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_DSA,
new Algorithm("", "SHA1withDSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_NOT_RECOMMENDED_RSA_MD5,
new Algorithm("", "MD5withRSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_RSA_RIPEMD160,
new Algorithm("", "RIPEMD160withRSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_RSA_SHA1,
new Algorithm("", "SHA1withRSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_RSA_SHA256,
new Algorithm("", "SHA256withRSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_RSA_SHA384,
new Algorithm("", "SHA384withRSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_RSA_SHA512,
new Algorithm("", "SHA512withRSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_ECDSA_SHA1,
new Algorithm("", "SHA1withECDSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_ECDSA_SHA256,
new Algorithm("", "SHA256withECDSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_ECDSA_SHA384,
new Algorithm("", "SHA384withECDSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_SIGNATURE_ECDSA_SHA512,
new Algorithm("", "SHA512withECDSA", "Signature")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_MAC_HMAC_NOT_RECOMMENDED_MD5,
new Algorithm("", "HmacMD5", "Mac")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_MAC_HMAC_RIPEMD160,
new Algorithm("", "HMACRIPEMD160", "Mac")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_MAC_HMAC_SHA1,
new Algorithm("", "HmacSHA1", "Mac")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_MAC_HMAC_SHA256,
new Algorithm("", "HmacSHA256", "Mac")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_MAC_HMAC_SHA384,
new Algorithm("", "HmacSHA384", "Mac")
);
algorithmsMap.put(
XMLSignature.ALGO_ID_MAC_HMAC_SHA512,
new Algorithm("", "HmacSHA512", "Mac")
);
algorithmsMap.put(
XMLCipher.TRIPLEDES,
new Algorithm("DESede", "DESede/CBC/ISO10126Padding", "BlockEncryption", 192)
);
algorithmsMap.put(
XMLCipher.AES_128,
new Algorithm("AES", "AES/CBC/ISO10126Padding", "BlockEncryption", 128)
);
algorithmsMap.put(
XMLCipher.AES_192,
new Algorithm("AES", "AES/CBC/ISO10126Padding", "BlockEncryption", 192)
);
algorithmsMap.put(
XMLCipher.AES_256,
new Algorithm("AES", "AES/CBC/ISO10126Padding", "BlockEncryption", 256)
);
algorithmsMap.put(
XMLCipher.AES_128_GCM,
new Algorithm("AES", "AES/GCM/NoPadding", "BlockEncryption", 128)
);
algorithmsMap.put(
XMLCipher.AES_192_GCM,
new Algorithm("AES", "AES/GCM/NoPadding", "BlockEncryption", 192)
);
algorithmsMap.put(
XMLCipher.AES_256_GCM,
new Algorithm("AES", "AES/GCM/NoPadding", "BlockEncryption", 256)
);
algorithmsMap.put(
XMLCipher.RSA_v1dot5,
new Algorithm("RSA", "RSA/ECB/PKCS1Padding", "KeyTransport")
);
algorithmsMap.put(
XMLCipher.RSA_OAEP,
new Algorithm("RSA", "RSA/ECB/OAEPPadding", "KeyTransport")
);
algorithmsMap.put(
XMLCipher.RSA_OAEP_11,
new Algorithm("RSA", "RSA/ECB/OAEPPadding", "KeyTransport")
);
algorithmsMap.put(
XMLCipher.DIFFIE_HELLMAN,
new Algorithm("", "", "KeyAgreement")
);
algorithmsMap.put(
XMLCipher.TRIPLEDES_KeyWrap,
new Algorithm("DESede", "DESedeWrap", "SymmetricKeyWrap", 192)
);
algorithmsMap.put(
XMLCipher.AES_128_KeyWrap,
new Algorithm("AES", "AESWrap", "SymmetricKeyWrap", 128)
);
algorithmsMap.put(
XMLCipher.AES_192_KeyWrap,
new Algorithm("AES", "AESWrap", "SymmetricKeyWrap", 192)
);
algorithmsMap.put(
XMLCipher.AES_256_KeyWrap,
new Algorithm("AES", "AESWrap", "SymmetricKeyWrap", 256)
);
}
/**
* Method translateURItoJCEID
*
* @param algorithmURI
* @return the JCE standard name corresponding to the given URI
*/
public static String translateURItoJCEID(String algorithmURI) {
if (log.isDebugEnabled()) {
log.debug("Request for URI " + algorithmURI);
}
Algorithm algorithm = algorithmsMap.get(algorithmURI);
if (algorithm != null) {
return algorithm.jceName;
}
return null;
}
/**
* Method getAlgorithmClassFromURI
* @param algorithmURI
* @return the class name that implements this algorithm
*/
public static String getAlgorithmClassFromURI(String algorithmURI) {
if (log.isDebugEnabled()) {
log.debug("Request for URI " + algorithmURI);
}
Algorithm algorithm = algorithmsMap.get(algorithmURI);
if (algorithm != null) {
return algorithm.algorithmClass;
}
return null;
}
/**
* Returns the keylength in bits for a particular algorithm.
*
* @param algorithmURI
* @return The length of the key used in the algorithm
*/
public static int getKeyLengthFromURI(String algorithmURI) {
if (log.isDebugEnabled()) {
log.debug("Request for URI " + algorithmURI);
}
Algorithm algorithm = algorithmsMap.get(algorithmURI);
if (algorithm != null) {
return algorithm.keyLength;
}
return 0;
}
/**
* Method getJCEKeyAlgorithmFromURI
*
* @param algorithmURI
* @return The KeyAlgorithm for the given URI.
*/
public static String getJCEKeyAlgorithmFromURI(String algorithmURI) {
if (log.isDebugEnabled()) {
log.debug("Request for URI " + algorithmURI);
}
Algorithm algorithm = algorithmsMap.get(algorithmURI);
if (algorithm != null) {
return algorithm.requiredKey;
}
return null;
}
/**
* Gets the default Provider for obtaining the security algorithms
* @return the default providerId.
*/
public static String getProviderId() {
return providerName;
}
/**
* Sets the default Provider for obtaining the security algorithms
* @param provider the default providerId.
*/
public static void setProviderId(String provider) {
providerName = provider;
}
/**
* Represents the Algorithm xml element
*/
public static class Algorithm {
final String requiredKey;
final String jceName;
final String algorithmClass;
final int keyLength;
/**
* Gets data from element
* @param el
*/
public Algorithm(Element el) {
requiredKey = el.getAttribute("RequiredKey");
jceName = el.getAttribute("JCEName");
algorithmClass = el.getAttribute("AlgorithmClass");
if (el.hasAttribute("KeyLength")) {
keyLength = Integer.parseInt(el.getAttribute("KeyLength"));
} else {
keyLength = 0;
}
}
public Algorithm(String requiredKey, String jceName) {
this(requiredKey, jceName, null, 0);
}
public Algorithm(String requiredKey, String jceName, String algorithmClass) {
this(requiredKey, jceName, algorithmClass, 0);
}
public Algorithm(String requiredKey, String jceName, int keyLength) {
this(requiredKey, jceName, null, keyLength);
}
public Algorithm(String requiredKey, String jceName, String algorithmClass, int keyLength) {
this.requiredKey = requiredKey;
this.jceName = jceName;
this.algorithmClass = algorithmClass;
this.keyLength = keyLength;
}
}
}
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