我怎样才能在我的应用程序散列密码
问题描述:
我想在我的应用程序散列的字符串密码,我在网上搜索的例子,但我不明白我将如何能够实施在我的情况下,有人可能会显示我举一个如何正确使用我的代码实现散列的例子。谢谢我怎样才能在我的应用程序散列密码
package ie.example.artur.adminapp;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
public class MainActivity extends AppCompatActivity {
EditText editTextName,editTextEmail,editTextPassword;
TextView textView;
private static final String DB_URL = "jdbc:mysql://10.3.2.51/socialmedia_website";
private static final String USER = "zzz";
private static final String PASS = "zzz";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
textView = (TextView) findViewById(R.id.textView);
editTextName = (EditText) findViewById(R.id.editTextName);
editTextEmail = (EditText) findViewById(R.id.editTextEmail);
editTextPassword = (EditText) findViewById(R.id.editTextPassword);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
}
public void btnConn(View view) {
Send objSend = new Send();
objSend.execute("");
}
private class Send extends AsyncTask<String, String, String>
{
String msg = "";
String name = editTextName.getText().toString();
String email = editTextEmail.getText().toString();
String password = editTextPassword.getText().toString();
@Override
protected void onPreExecute() {
textView.setText("Please Wait Inserting Data");
}
@Override
protected String doInBackground(String... strings) {
try {
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(DB_URL, USER, PASS);
if (conn == null) {
msg = "Connection goes wrong";
} else {
String query = "Insert INTO users (name,email,password) VALUES('" + name+"','"+email+"','"+password+"')";
Statement stmt = conn.createStatement();
stmt.executeUpdate(query);
msg = "Inserting Successful!!";
}
conn.close();
}
catch(
Exception e
)
{
msg = "Connection goes Wrong";
e.printStackTrace();
}
return msg;
}
@Override
protected void onPostExecute(String msg) {textView.setText(msg);}
}
}
答
好的。根据评论中的讨论。所以在你的类中输入密码作为输入,你必须实现这个方法。
所以你必须做的是在你的课堂上实现答案方法。所以下面添加方法在你的类 -
public String md5(String s) {
try {
// Create MD5 Hash
MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
digest.update(s.getBytes());
byte messageDigest[] = digest.digest();
// Create Hex String
StringBuffer hexString = new StringBuffer();
for (int i=0; i<messageDigest.length; i++)
hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
return hexString.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return "";
}
现在在你的异步任务,你这样做 -
String password = editTextPassword.getText().toString();
这个值,而不是传递给你的MD5的方法以获得散列码作为密码。
String password = md5(editTextPassword.getText().toString());
您应该使用数据库的PASSWORD函数,并且您应该使用预准备语句。 – EJP
你在看什么样的哈希。你有什么尝试?你想要MD5或SHA1哈希? –
您的问题是重复此链接将帮助你。 https://*.com/questions/3934331/how-to-hash-a-string-in-android –