| 提交 | 用户 | age | ||
| 5c5945 | 1 | /** |
| E | 2 | * 对企业微信发送给企业后台的消息加解密示例代码. |
| 3 | * | |
| 4 | * @copyright Copyright (c) 1998-2014 Tencent Inc. | |
| 5 | */ | |
| 6 | ||
| 7 | // ------------------------------------------------------------------------ | |
| 8 | ||
| 9 | package com.qq.weixin.mp.aes; | |
| 10 | ||
| 11 | import java.security.MessageDigest; | |
| 12 | import java.util.Arrays; | |
| 13 | ||
| 14 | /** | |
| 15 | * SHA1 class | |
| 16 | * | |
| 17 | * 计算消息签名接口. | |
| 18 | */ | |
| 19 | class SHA1 { | |
| 20 | ||
| 21 | /** | |
| 22 | * 用SHA1算法生成安全签名 | |
| 23 | * @param token 票据 | |
| 24 | * @param timestamp 时间戳 | |
| 25 | * @param nonce 随机字符串 | |
| 26 | * @param encrypt 密文 | |
| 27 | * @return 安全签名 | |
| 28 | * @throws AesException | |
| 29 | */ | |
| 30 | public static String getSHA1(String token, String timestamp, String nonce, String encrypt) throws AesException | |
| 31 | { | |
| 32 | try { | |
| 33 | String[] array = new String[] { token, timestamp, nonce, encrypt }; | |
| 34 | StringBuffer sb = new StringBuffer(); | |
| 35 | // 字符串排序 | |
| 36 | Arrays.sort(array); | |
| 37 | for (int i = 0; i < 4; i++) { | |
| 38 | sb.append(array[i]); | |
| 39 | } | |
| 40 | String str = sb.toString(); | |
| 41 | // SHA1签名生成 | |
| 42 | MessageDigest md = MessageDigest.getInstance("SHA-1"); | |
| 43 | md.update(str.getBytes()); | |
| 44 | byte[] digest = md.digest(); | |
| 45 | ||
| 46 | StringBuffer hexstr = new StringBuffer(); | |
| 47 | String shaHex = ""; | |
| 48 | for (int i = 0; i < digest.length; i++) { | |
| 49 | shaHex = Integer.toHexString(digest[i] & 0xFF); | |
| 50 | if (shaHex.length() < 2) { | |
| 51 | hexstr.append(0); | |
| 52 | } | |
| 53 | hexstr.append(shaHex); | |
| 54 | } | |
| 55 | return hexstr.toString(); | |
| 56 | } catch (Exception e) { | |
| 57 | e.printStackTrace(); | |
| 58 | throw new AesException(AesException.ComputeSignatureError); | |
| 59 | } | |
| 60 | } | |
| 61 | } | |
