使用Java创建Node.js加密密钥 [英] Node.js crypto key creation using Java

问题描述

我在node.js中有此代码，它使用Crypto创建密钥。
我可以使用Java创建相同的密钥吗？

  diffieHellmanConfig'：{
'group'：'modp14'，
'encoding'：'base64'
} 
 
 
 const clientDHInstance = crypto.getDiffieHellman（config.userCardCrypto.diffieHellmanConfig。组）; 
 clientDHInstance.generateKeys（）; 
 
 const clientPublicKey = clientDHInstance.getPublicKey（config.userCardCrypto.diffieHellmanConfig.encoding）; 
  

我尝试使用

  KeyPairGenerator keyGen = KeyPairGenerator.getInstance（ DH）; 
 keyGen.initialize（2048）; 
 KeyPair keypair = keyGen.genKeyPair（）; 
 PrivateKey privateKey = keypair.getPrivate（）; 
 PublicKey publicKey = keypair.getPublic（）; 
字节[]编码= publicKey.getEncoded（）; 
 String s = Base64.getEncoder（）。encodeToString（encoded）; 
 System.out.println（s）; 
  

但是键是错误的

节点键是
t2EBMu8wCShfu8Dm45i9nNQ + TXyG5Oz1 / izjTwRD0dchUK2400R9cP + NjLlOqjLstXnTbG5 / aa0WaCoP187J90piiebGOjZUlF / BU / xkkrYncQHAJ403J8 + R2V5eHYCSQXbS6CSO7x + eEhNz8QTMgwkOR9w1R3gvbibaqL7qyQARPFak6 + VIKFLUakSzMvdAIjLNPu2dva1QdJixid + EYiZE / DxA7lqpje74I7wynZj7kmUZXtiIWu46suf5CaVONtjEVZilvErJNpVlPX5TXoMVNrWkl9g5Aa6moXg4K0M6Gc4taumnDr9gh4PEuw + / QVauEld27 / 5TQlfAlalvzg ==

爪哇关键是
MIICKTCCARsGCSqGSIb3DQEDATCCAQwCggEBAP ////////// YQ / aoiFowjTExmKLgNwc0SkCTgiKZ8x0Agu + pjsTmyJRSgh5jjQE3e + VGbPNOkMbMCsKbfJfFDdP4TVtbVHCReSFtXZiXn7G9ExC6aY37WsL / 1y29Aa37e44a /塔伊兹+ lrp8kEXxLH + ZJKGZR7ORbPcIAfLihY78FmNpINhxV05ppFj + O / STPX4NlXSPco62WHGLzViCFUrue1SkHcJaWbWcMNU5KvJgE8XRsCMoYIXwykF5GLjbOO + OedywYDoYDmyeDouwHoo + 1xV3wb0xSyd4ry / aVWBcYOZVJfOqVauUV0iYYmPoFEBVyjlqKrKpo //////// // 8CAQICAgQAA4IBBgACggEBAI + NYSvMh0bfh1ptt62vHEHENz6ZAYvnnrwmRhQRdYMBZiqu60AvJ4F6qL99EfesxvH3n8YaC + cG7bKAqkw74rRHJXkMF5XOy / BTV FksCJzkqNdAuPri / mfMm6GNG5MBYtQIurWkgOnnrVl3Nra2CSVUixQ5zCANOSnnNYNFPanr01bI6KZXsiRZRqfA4oYxBPySy4Sp1dx2IvSQe8EjNWTicTQQj / HP7hl1yf3uiYlM4h3dMbmfqv6Y10hW8kvoD88 / mh09pdz + HxxDz + mVSMe + 3 + N7VIYUEGRHhrAvjbXmwh5zyCMIJiI =

解决方案

在您的示例键时，DH密钥创建按节点的大小是期望的 2048 位，但是，Java DH键将其推入〜 4k 位。 / p>

所以我认为您在Java上初始化DH密钥的方式有问题。

您的代码，我认为不适合提供整数文字来指定DH循环组的大小。

相反，请尝试实例化Java DH键，如下所示：

 最终DHParameterSpec keySpec = new DHParameterSpec（DH_MODULUS，DH_BASE）; 
最终KeyPair keyPair； 
 try {
 KeyPairGenerator keyGen = KeyPairGenerator.getInstance（ DH）; 
 keyGen.initialize（keySpec）; 
 keyPair = keyGen.generateKeyPair（）; 
 PrivateKey privateKey = keyPair.getPrivate（）; 
 PublicKey publicKey = keyPair.getPublic（）; 
字节[]编码= publicKey.getEncoded（）; 
 String s = Base64.getEncoder（）。encodeToString（encoded）; 
 System.out.println（s）; 
} 
  

您需要创建 DHParameterSpec 对象提供了模数和基数，类似于node中提供的值。

示例：

  public DHParameterSpec modp14（）{
 final BigInteger p = 
 new BigInteger（
 FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1 
 + 29024E088A67CC74020BBEA63BB798 b + EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245 
 + E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED 
 + EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D 
 + C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F 
 + 83655D23DCA3AD961C62F356208552BB9ED529077096966D 
 + 670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B 
 +  E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9 
 + DE2BCBF69558171 83995497CEA956AE515D2261898FA0510 
 + 15728E5A8AACAA68FFFFFFFFFFFFFFFF，
 16）； 
 final BigInteger g = new BigInteger（ 2）; 
返回新的DHParameterSpec（p，g）; 
} 
  

请参阅此处了解素数组的说明。

I have this code in node.js, it create Key using Crypto. Can i create same key using Java?

diffieHellmanConfig': {
      'group': 'modp14',
      'encoding': 'base64'
    }


 const clientDHInstance = crypto.getDiffieHellman(config.userCardCrypto.diffieHellmanConfig.group);
 clientDHInstance.generateKeys();

 const clientPublicKey = clientDHInstance.getPublicKey(config.userCardCrypto.diffieHellmanConfig.encoding);

I try to use

KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH");
keyGen.initialize(2048);
KeyPair keypair = keyGen.genKeyPair();
PrivateKey privateKey = keypair.getPrivate();
PublicKey publicKey = keypair.getPublic();
byte[] encoded = publicKey.getEncoded();
String s = Base64.getEncoder().encodeToString(encoded);
System.out.println(s);

But key is wrong

Node key is t2EBMu8wCShfu8Dm45i9nNQ+TXyG5Oz1/izjTwRD0dchUK2400R9cP+NjLlOqjLstXnTbG5/aa0WaCoP187J90piiebGOjZUlF/Bu/xkkrYncQHAJ403J8+R2V5eHYCSQXbS6CSO7x+eEhNz8QTMgwkOR9w1R3gvbibaqL7qyQARPFak6+VIKFLUakSzMvdAIjLNPu2dva1QdJixid+EYiZE/DxA7lqpje74I7wynZj7kmUZXtiIWu46suf5CaVONtjEVZilvErJNpVlPX5TXoMVNrWkl9g5Aa6moXg4K0M6Gc4taumnDr9gh4PEuw+/QVauEld27/5TQlfAlalvzg==

Java key is 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

解决方案

In your example keys, the DH keys created by node are the expected 2048 bits in size, however, the Java DH keys are pushing into ~4k bits.

So I think there is something wrong with the way you are initialising the DH keys on Java.

Looking at your code, I don't think it's appropriate to provide an integer literal to specify the size of the DH cyclic group.

Instead try instantiating your Java DH keys like this:

  final DHParameterSpec keySpec=new DHParameterSpec(DH_MODULUS,DH_BASE);
  final KeyPair keyPair;
  try {
    KeyPairGenerator keyGen=KeyPairGenerator.getInstance("DH");
    keyGen.initialize(keySpec);
    keyPair=keyGen.generateKeyPair();
    PrivateKey privateKey = keyPair.getPrivate();
    PublicKey publicKey = keyPair.getPublic();
    byte[] encoded = publicKey.getEncoded();
    String s = Base64.getEncoder().encodeToString(encoded);
    System.out.println(s);
  }

You need to create a DHParameterSpec object in Java providing a modulus and base, similar to the values provided in node.

Example:

public DHParameterSpec modp14() {
  final BigInteger p =
      new BigInteger(
          "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
              + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
              + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
              + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
              + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
              + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
              + "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
              + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
              + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
              + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
              + "15728E5A8AACAA68FFFFFFFFFFFFFFFF",
          16);
  final BigInteger g = new BigInteger("2");
  return new DHParameterSpec(p, g);
}

Pls see here for specification on prime group.

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