欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

Java实现SHA1加密代码实例

程序员文章站 2023-12-22 19:00:22
微信接入中需要用到sha1的算法。java版的sha1加密如下: /* * 微信公众平台(java) sdk * * copyright (c) 20...

微信接入中需要用到sha1的算法。java版的sha1加密如下:

/*
 * 微信公众平台(java) sdk
 *
 * copyright (c) 2016, ansitech network technology co.,ltd all rights reserved.
 * http://www.ansitech.com/weixin/sdk/
 *
 * 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.levi.utils;
 
import java.security.messagedigest;
 
/**
 * <p>title: sha1算法</p>
 *
 * @author levi
 */
public final class sha1 {
 
  private static final char[] hex_digits = {'0', '1', '2', '3', '4', '5',
              '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
 
  /**
   * takes the raw bytes from the digest and formats them correct.
   *
   * @param bytes the raw bytes from the digest.
   * @return the formatted bytes.
   */
  private static string getformattedtext(byte[] bytes) {
    int len = bytes.length;
    stringbuilder buf = new stringbuilder(len * 2);
    // 把密文转换成十六进制的字符串形式
    for (int j = 0; j < len; j++) {
      buf.append(hex_digits[(bytes[j] >> 4) & 0x0f]);
      buf.append(hex_digits[bytes[j] & 0x0f]);
    }
    return buf.tostring();
  }
 
  public static string encode(string str) {
    if (str == null) {
      return null;
    }
    try {
      messagedigest messagedigest = messagedigest.getinstance("sha1");
      messagedigest.update(str.getbytes());
      return getformattedtext(messagedigest.digest());
    } catch (exception e) {
      throw new runtimeexception(e);
    }
  }
}

如果需要做微信接入,直接把上面的复制新建一个类即可使用,我自己做好的,测试微信接入成功。

上一篇:

下一篇: