Java/Node PBKDF2 hash 的用户密码使用盐和迭代计数 - 节点等效

Question

我正在尝试在 Nodejs 中复制此方法。 我想知道它在 Node 中的等价物，类似于Replicating Java password hashing code in Node.js (PBKDF2WithHmacSHA1) 。

Java 代码：

  private final byte[] _createSaltedPassword(String password, byte[] salt, int iterationCount) {
    
    byte[] dk;    
    PBEKeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, iterationCount, 256);
    SecretKeyFactory key = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");
    dk = key.generateSecret(keySpec).getEncoded();
    return dk; 
  }

为了这个例子，我保持用户 (user)、客户端 nonce (aabbccddaabbccdd)、密码 (Password123)、salt 和迭代计数 (4096) 相同。 我最后一次尝试使用加密在 Node 中获得等价物。

  const crypto = require("crypto");

  const saltedPassword = crypto.pbkdf2Sync(password, salt, iterationCount, 32, 'sha256').toString('base64');
  console.log('Salted Password:', saltedPassword);

它用于摘要身份验证。 来自 Java 程序的 Output 日志：

Output 日志来自 Java 程序

Java 加盐密码：nA0hWFpZshs+iME/leUy+e2gM5mjIgo6PYJ8eNjRdhY=

节点加盐密码：PYgn6rcngiE0HSMwzmWhd2W5qTdaRilw4PEeuy3OyRo=

谢谢你。

Answer 1

抱歉懒得查看链接代码，但我提供了 Java 和 NodeJS 的两个示例，它们使用 PBKDF2 算法从密码短语生成密钥。 您可以在在线编译器中运行这两个代码 - Java 代码和NodeJs 代码。

这是 output 具有固定 = 不安全的盐：

Generate a 32 byte long AES key with PBKDF2
aesKeySha256 length:  32  data:  e1ea3e4b0376c0f9bf93b94fe71719a099317297b79108aacd88c8a355d7a3d4

安全警告：以下代码没有任何异常处理，仅用于教育目的。 不要在生产中使用固定盐，它仅用于表明两个平台生成相同的密钥。

Java代码：

import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import java.security.SecureRandom;
import java.security.spec.KeySpec;

public class Main {
    public static void main(String[] args) throws Exception {
        System.out.println("Generate a 32 byte long AES key with PBKDF2");

        // get the password as char array
        char[] passwordChar = "secret password".toCharArray();
        final int PBKDF2_ITERATIONS = 15000; // number of iterations, higher is better but slower
        // ### security warning - never use a fixed salt in production, this is for compare reasons only
        byte[] salt = generateFixedSalt32Byte();
        // please use below generateSalt32Byte()
        //byte[] salt = generateSalt32Byte();
        byte[] aesKeySha256 = generateAes256KeyPbkdf2Sha256(passwordChar, PBKDF2_ITERATIONS, salt);
        System.out.println("aesKeySha256 length: " + aesKeySha256.length + " data: " + bytesToHex(aesKeySha256));
    }

    public static byte[] generateAes256KeyPbkdf2Sha256(char[] password, int iterations, byte[] salt) throws Exception {
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");
        KeySpec keySpec = new PBEKeySpec(password, salt, iterations, 32 * 8);
        return secretKeyFactory.generateSecret(keySpec).getEncoded();
    }

    private static byte[] generateSalt32Byte() {
        SecureRandom secureRandom = new SecureRandom();
        byte[] salt = new byte[32];
        secureRandom.nextBytes(salt);
        return salt;
    }

    private static byte[] generateFixedSalt32Byte() {
        // ### security warning - never use this in production ###
        byte[] salt = new byte[32]; // 32 x0's
        return salt;
    }

    private static String bytesToHex(byte[] bytes) {
        StringBuffer result = new StringBuffer();
        for (byte b : bytes) result.append(Integer.toString((b & 0xff) + 0x100, 16).substring(1));
        return result.toString();
    }
}

Node.js 代码

console.log("Generate a 32 byte long AES key with PBKDF2");
var crypto = require('crypto');

var password = "secret password";
var PBKDF2_ITERATIONS = 15000; // number of iterations, higher is better but slower

// ### security warning - never use a fixed salt in production, this is for compare reasons only
var salt = generateFixedSalt32Byte();
// please use below generateSalt32Byte()
//var salt = generateSalt32Byte();

var aesKeySha256 = generateAes256KeyPbkdf2Sha256(password, PBKDF2_ITERATIONS, salt);
console.log('aesKeySha256 length: ',
  aesKeySha256.length, ' data: ', bytesToHex(aesKeySha256));

function generateAes256KeyPbkdf2Sha256(password, iterations, salt) {
  return crypto.pbkdf2Sync(password, salt, iterations, 32, 'sha256');
}

function generateSalt32Byte() {
  return crypto.randomBytes(32);
}

function generateFixedSalt32Byte() {
  return Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex');
}

function bytesToHex(input) {
  return input.toString('hex');
}