android MD5 加密算法

public static void main(String[] args) throws NoSuchAlgorithmException {
MessageDigest digest = MessageDigest.getInstance("md5");
String password = "123456";

byte [] result = digest.digest(password.getBytes());
StringBuffer buffer  = new StringBuffer();
for(byte b : result){
//0xff是十六进制，十进制为255

int nuber =  b & 0xff;
String str = Integer.toHexString(nuber);
if(str.length()==1){
buffer.append("0");
}
buffer.append(str);

}
//这就是MD5加密得到的值
System.out.println(buffer);
}