Android uses MD5 password encryption

Create an MD5 class first in the project directory

You can directly copy the following code
//import your package name here

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Utils {

public static String md5Password(String password){
    StringBuffer sb = new StringBuffer();
    // 得到一个信息摘要器
    try {
        MessageDigest digest = MessageDigest.getInstance("md5");
        byte[] result = digest.digest(password.getBytes());
        // 把每一个byte做一个与运算 0xff
        for (byte b : result) {
            // 与运算
            int number = b & 0xff;
            String str = Integer.toHexString(number);
            if (str.length() == 1) {
                sb.append("0");
            }
            sb.append(str);
        }
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return sb.toString();
} 

}

Then, taking the CreateNewAccount class as an example, you can obtain the password entered by the user and convert it into a string, and then directly pass it into MD5Utils.md5Password( ). At this time, the password converted by this class method is the ciphertext after MD5 encryption. Isn't it very simple~