�� — Wed, 27 Jul 2005 03:17:00 GMT

import java.security.*;

class MD5_Test {

public final static String MD5(String s) {
  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) {

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

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