MessageDigest如何用于密码加密

MessageDigest?Java?????????????,???????????????MessageDigest????????????:

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

public class PasswordEncryption {

    public static String encryptPassword(String password) {
        try {
            MessageDigest md = MessageDigest.getInstance("SHA-256");
            byte[] digest = md.digest(password.getBytes());

            StringBuilder sb = new StringBuilder();
            for (byte b : digest) {
                sb.append(String.format("x", b));
            }

            return sb.toString();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }
    }

    public static void main(String[] args) {
        String password = "123456";
        String encryptedPassword = encryptPassword(password);
        System.out.println("Encrypted password: " + encryptedPassword);
    }
}

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