生成加密用的key java,使用Java创建Node.js加密密钥

「爱情、让人受尽委屈。」 2022-08-29 14:57 113阅读 0赞

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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();