Java/Node PBKDF2用户密码哈希使用的盐和迭代计数- Node等效

Question

我试图在Nodejs中复制此方法。我想知道它在Node中的等效类似于在Node.js中复制Java密码哈希代码(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; 
  }

对于这个示例，我保持用户(user)、客户端nonce (aabbccddaabbccdd)、密码(Password123)、盐和迭代计数(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);

用于摘要身份验证。Java程序输出日志:

Java程序输出日志

Java盐渍密码: nA0hWFpZshs +输入法/leUy + e2gM5mjIgo6PYJ8eNjRdhY =

节点盐渍密码: PYgn6rcngiE0HSMwzmWhd2W5qTdaRilw4PEeuy3OyRo =

谢谢。

Answer 1

很抱歉懒得查看链接的代码，但我提供了两个示例，用于Java和NodeJS与Crypto库，使用PBKDF2算法从密码短语生成密钥。你可以在一个在线编译器中运行这两个代码——Java代码和NodeJs代码。

这是带有fixed = unsecure salt的输出:

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，仅供教育用途。不要使用在生产中固定盐，它仅用于显示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();
    }
}

NodeJs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');
}