Author: simonetripodi
Date: Wed Feb 24 18:01:31 2010
New Revision: 915901
URL: http://svn.apache.org/viewvc?rev=915901&view=rev
Log:
first checkin of HmacSha1MethodAlgorithm class
Added:
labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/hmac/HmacSha1MethodAlgorithm.java
(with props)
Added:
labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/hmac/HmacSha1MethodAlgorithm.java
URL:
http://svn.apache.org/viewvc/labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/hmac/HmacSha1MethodAlgorithm.java?rev=915901&view=auto
==============================================================================
---
labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/hmac/HmacSha1MethodAlgorithm.java
(added)
+++
labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/hmac/HmacSha1MethodAlgorithm.java
Wed Feb 24 18:01:31 2010
@@ -0,0 +1,91 @@
+/*
+ * 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.labs.amber.signature.signers.hmac;
+
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+
+import org.apache.commons.codec.binary.Base64;
+import org.apache.labs.amber.signature.signers.AbstractMethodAlgorithm;
+import org.apache.labs.amber.signature.signers.SignatureException;
+import org.apache.labs.amber.signature.signers.SignatureMethod;
+
+/**
+ * HMAC-SHA1 Method implementation.
+ *
+ * @version $Id$
+ */
+...@signaturemethod("HMAC-SHA1")
+public final class HmacSha1MethodAlgorithm extends
AbstractMethodAlgorithm<HmacSha1Key, HmacSha1Key> {
+
+ /**
+ * The algorithm name.
+ */
+ private static final String HMAC_SHA1_ALGORITHM = "HmacSHA1";
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ protected String encode(HmacSha1Key signingKey,
+ String secretCredential,
+ String baseString) throws SignatureException {
+ String key = new StringBuilder(percentEncode(signingKey.getValue()))
+ .append('&')
+ .append(percentEncode(secretCredential))
+ .toString();
+
+ SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(),
HMAC_SHA1_ALGORITHM);
+
+ Mac mac = null;
+ try {
+ mac = Mac.getInstance(HMAC_SHA1_ALGORITHM);
+ } catch (NoSuchAlgorithmException e) {
+ throw new SignatureException("HMAC-SHA1 Algorithm not supported",
e);
+ }
+
+ try {
+ mac.init(secretKeySpec);
+ } catch (InvalidKeyException e) {
+ throw new SignatureException(new StringBuilder("Signing key '")
+ .append(key)
+ .append("' caused HMAC-SHA1 error")
+ .toString(), e);
+ }
+
+ byte[] rawHmac = mac.doFinal(baseString.getBytes());
+
+ return Base64.encodeBase64String(rawHmac);
+ }
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ protected boolean verify(String signature,
+ HmacSha1Key verifyingKey,
+ String secretCredential,
+ String baseString)
+ throws SignatureException {
+ String expectedSignature = this.encode(verifyingKey, secretCredential,
baseString);
+ return expectedSignature.equals(signature);
+ }
+
+}
Propchange:
labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/hmac/HmacSha1MethodAlgorithm.java
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svn:eol-style = native
Propchange:
labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/hmac/HmacSha1MethodAlgorithm.java
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svn:keywords = Date Author Id Revision HeadURL
Propchange:
labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/hmac/HmacSha1MethodAlgorithm.java
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