JAVA 的MD5加密算法源代码

import java.security.*;
import java.security.spec.*;

class MD5_Test{

public final static String MD5(String s){

http://www.gaodaima.com/42772.htmlJAVA 的MD5加密算法源代码

char hexDigits[] = {
‘0’, ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, ‘9’, ‘a’, ‘b’, ‘c’, ‘d’,
‘e’, ‘f’};
try {
byte[] strTemp = s.getBytes();
MessageDigest mdTemp = MessageDigest.getInstance("MD5");
mdTemp.update(strTemp);
byte[] md = mdTemp.digest();
int j = md.length;
char str[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
return new String(str);
}
catch (Exception e){
return null;
}
}
public static void main(String[] args){
//MD5_Test aa = new MD5_Test();

System.out.print(MD5_Test.MD5("XX"));
}

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