|
- package com.simple.utils;
-
- import java.security.MessageDigest;
- import java.security.NoSuchAlgorithmException;
- import java.util.Arrays;
-
- public class CheckUtil {
- //token为自己定义的一个字符串
- public static boolean checkSignature(String token, String signature,String timestamp,String nonce) {
- String[] arr = new String[]{token,timestamp,nonce};
-
- //排序
- Arrays.sort(arr);
-
- //生成字符串
- StringBuffer sb = new StringBuffer();
- for(int i=0; i<arr.length; i++) {
- sb.append(arr[i]);
- }
-
- //sha1加密
- String tmpStr = getSHA1Str(sb.toString());
- //加密字符串与signature比较的时候忽略大小写
- return tmpStr.equals(signature.toUpperCase());
- }
-
- private static String getSHA1Str(String content) {
- MessageDigest md = null;
- String tmpStr = null;
-
- try {
- md = MessageDigest.getInstance("SHA-1");
- // 将三个参数字符串拼接成一个字符串进行 shal 加密
- byte[] digest = md.digest(content.toString().getBytes());
- tmpStr = byteToStr(digest);
- } catch (NoSuchAlgorithmException e) {
- e.printStackTrace();
- }
- return tmpStr;
- }
-
- /**
- * 将字节数组转换为十六进制字符串
- * @param digest
- * @return
- */
- private static String byteToStr(byte[] digest) {
- String strDigest = "";
- for(int i = 0; i < digest.length; i++){
- strDigest += byteToHexStr(digest[i]);
- }
- return strDigest;
- }
-
- /**
- * 将字节转换为十六进制字符串
- * @param b
- * @return
- */
- private static String byteToHexStr(byte b) {
- char[] Digit = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
- char[] tempArr = new char[2];
- tempArr[0] = Digit[(b >>> 4) & 0X0F];
- tempArr[1] = Digit[b & 0X0F];
-
- String s = new String(tempArr);
- return s;
- }
- }
|