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基于 Spring Authorization Server 的 Netease 短信组件模块

There is a newer version: 3.2.1.4

/*
 * Copyright (c) 2020-2030 郑庚伟 ZHENGGENGWEI (码匠君) ([email protected] & www.herodotus.cn)
 *
 * Dante Engine licensed under the GNU LESSER GENERAL PUBLIC LICENSE 3.0;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 
 *
 * 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 cn.herodotus.engine.sms.netease.processor;

import java.security.MessageDigest;

/**
 * Description: 检查 
 *
 * @author : gengwei.zheng
 * @date : 2021/5/26 16:22
 */
public class CheckSumBuilder {

    private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd',
            'e', 'f'};

    /**
     * 计算并获取CheckSum
     *
     * @param appSecret 密钥
     * @param nonce     随机数
     * @param curTime   当前时间
     * @return checkSum
     */
    public static String getCheckSum(String appSecret, String nonce, String curTime) {
        return encode("sha1", appSecret + nonce + curTime);
    }

    /**
     * 计算并获取md5值
     *
     * @param requestBody 请求内容
     * @return md5值
     */
    public static String getMd5(String requestBody) {
        return encode("md5", requestBody);
    }

    private static String encode(String algorithm, String value) {
        if (value == null) {
            return null;
        }
        try {
            MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
            messageDigest.update(value.getBytes());
            return getFormattedText(messageDigest.digest());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private static String getFormattedText(byte[] bytes) {
        int len = bytes.length;
        StringBuilder buf = new StringBuilder(len * 2);
        for (byte aByte : bytes) {
            buf.append(HEX_DIGITS[(aByte >> 4) & 0x0f]);
            buf.append(HEX_DIGITS[aByte & 0x0f]);
        }
        return buf.toString();
    }
}