首先是我的源代码
/***
* MD5加码 生成32位md5码
*/
public static String backMD5(String inStr){
MessageDigest md5 = null;
try{
md5 = MessageDigest.getInstance("MD5");
}catch (Exception e){
System.out.println(e.toString());
e.printStackTrace();
return "";
}
char[] charArray = inStr.toCharArray();
byte[] byteArray = new byte[charArray.length];
for (int i = 0; i < charArray.length; i++)
byteArray[i] = (byte) charArray[i];
byte[] md5Bytes = md5.digest(byteArray);
StringBuffer hexValue = new StringBuffer();
for (int i = 0; i < md5Bytes.length; i++){
int val = ((int) md5Bytes[i]) & 0xff;
if (val < 16)
hexValue.append("0");
hexValue.append(Integer.toHexString(val));
}
return hexValue.toString();
}
/**
* 加密解密算法 执行一次加密，两次解密
*/
public static String DecryptMD5(String inStr){
char[] a = inStr.toCharArray();
for (int i = 0; i < a.length; i++){
a[i] = (char) (a[i] ^ 't');
}
String s = new String(a);
return s;
}
// 测试主函数
public static void main(String args[]) {
//可以在这里设置自己的数据
List<String> list=new ArrayList<String>();
list.add("liuhao");
list.add("liu hao");
for (int i = 0; i < list.size(); i++) {
System.out.println("原始：" + list.get(i));
System.out.println("MD5后：" + backMD5(list.get(i)));
System.out.println("加密的：" + DecryptMD5(list.get(i)));
System.out.println("解密的：" + DecryptMD5(DecryptMD5(list.get(i))));
}
}
输出的结果为
好啦..就是这么的简单