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Cattle Framework Addons WeChat Component

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/*
 * Copyright (C) 2018 the original author or authors.
 *
 * 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.gitlab.summercattle.addons.wechat.utils;

import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

import org.apache.commons.codec.binary.Hex;
import org.apache.tomcat.util.codec.binary.StringUtils;

import com.gitlab.summercattle.commons.exception.CommonException;
import com.gitlab.summercattle.commons.exception.ExceptionWrapUtils;

/**
 * 签名工具
 * @author orange
 *
 */
public class SignUtils {

	public static String signSha256Hmac(String secret, String str) throws CommonException {
		try {
			Mac sha256Hmac = Mac.getInstance("HmacSHA256");
			SecretKeySpec secretKey = new SecretKeySpec(StringUtils.getBytesUtf8(secret), "HmacSHA256");
			sha256Hmac.init(secretKey);
			byte[] bytes = sha256Hmac.doFinal(StringUtils.getBytesUtf8(str));
			return Hex.encodeHexString(bytes);
		}
		catch (NoSuchAlgorithmException | InvalidKeyException e) {
			throw ExceptionWrapUtils.wrap(e);
		}
	}
}