com.alibaba.nacos.client.auth.ram.utils.SignUtil Maven / Gradle / Ivy
/*
* Copyright 1999-2021 Alibaba Group Holding 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 com.alibaba.nacos.client.auth.ram.utils;
import com.alibaba.nacos.common.codec.Base64;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
/**
* Sign util.
*
* @author pbting
* @date 2019-01-22 10:20 PM
*/
public class SignUtil {
private static final Charset UTF8 = StandardCharsets.UTF_8;
/**
* Sign.
*
* @param data data
* @param key key
* @return signature
* @throws Exception exception
*/
public static String sign(String data, String key) throws Exception {
try {
byte[] signature = sign(data.getBytes(UTF8), key.getBytes(UTF8), SignUtil.SigningAlgorithm.HmacSHA1);
return new String(Base64.encodeBase64(signature));
} catch (Exception ex) {
throw new Exception("Unable to calculate a request signature: " + ex.getMessage(), ex);
}
}
static byte[] sign(byte[] data, byte[] key, SignUtil.SigningAlgorithm algorithm) throws Exception {
try {
Mac mac = Mac.getInstance(algorithm.toString());
mac.init(new SecretKeySpec(key, algorithm.toString()));
return mac.doFinal(data);
} catch (Exception ex) {
throw new Exception("Unable to calculate a request signature: " + ex.getMessage(), ex);
}
}
public enum SigningAlgorithm {
// Hmac SHA1 algorithm
HmacSHA1;
SigningAlgorithm() {
}
}
}