/*
* Copyright 2013 McEvoy Software Ltd.
*
* 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 io.milton.http.http11.auth;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
/**
*
* @author brad
*/
public class HmacUtils {
private static final String HMAC_SHA1_ALGORITHM = "HmacSHA1";
public static String calcShaHash(String data, String key) {
String result = null;
try {
Key signingKey = new SecretKeySpec(key.getBytes(), HMAC_SHA1_ALGORITHM);
Mac mac = Mac.getInstance(HMAC_SHA1_ALGORITHM);
mac.init(signingKey);
byte[] rawHmac = mac.doFinal(data.getBytes());
result = Base64.encodeBase64URLSafeString(rawHmac);
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException(HMAC_SHA1_ALGORITHM, e);
} catch (InvalidKeyException e) {
throw new RuntimeException(HMAC_SHA1_ALGORITHM, e);
} catch (IllegalStateException e) {
throw new RuntimeException(HMAC_SHA1_ALGORITHM, e);
}
return result;
}
}