我需要使用用户的公钥对消息进行加密. 用户将接收到该消息，并且将不得不使用私钥对其进行解密.我试了所有的方法，但我不知道我做错了什么. 我创建了一个独立运行的 node 脚本，只安装了两个必要的依赖项(tweetnacl和tweetnacl-utils). 显然，消息是正确加密的，但当我try 解密它时，DECRYPTED_MESSAGE常量为"NULL".
我已经使用这两个库来对消息进行签名，并且签名部分工作得很好，所以我不打算转换库.你能告诉我我做错了什么吗？这是您可以使用Node.js 运行的代码
const nacl = require('tweetnacl');
const naclUtil = require('tweetnacl-util');
// Getting keypair from a key
const x25519_from_key = (key) => {
console.log(key.length)
const boxKeyPair = nacl.box.keyPair.fromSecretKey(key);
const secretKey = boxKeyPair.secretKey;
const publicKey = boxKeyPair.publicKey;
const result = {
publicKey:
{
uint: publicKey,
base64: naclUtil.encodeBase64(publicKey)
},
secretKey: {
uint: secretKey,
base64: naclUtil.encodeBase64(secretKey)
}
}
return result;
};
// Encrypt a message using the public key
const encryptMessage = (message, x25519_public_uint) => {
const nonce = nacl.randomBytes(nacl.box.nonceLength);
const message_decoded = naclUtil.decodeUTF8(message);
const encrypted_message = nacl.box.after(
message_decoded,
nonce,
x25519_public_uint
);
return {
nonce_base64: naclUtil.encodeBase64(nonce),
encrypted_message_encoded: naclUtil.encodeBase64(encrypted_message),
};
};
// Decrypt message using the secret key
const decryptMessage = (encrypted_message, nonce_base64, x25519_secret_key) => {
const nonce = naclUtil.decodeBase64(nonce_base64);
const encrypted_message_decoded = naclUtil.decodeBase64(encrypted_message);
const decrypted_message = nacl.box.open.after(
encrypted_message_decoded,
nonce,
x25519_secret_key
);
return naclUtil.encodeUTF8(decrypted_message);
};
// Generating keypair x25519
const keyPair = x25519_from_key(nacl.randomBytes(nacl.box.secretKeyLength));
// Encrypt with publicKey
const message = 'This is a plain message';
const encrypted = encryptMessage(message, keyPair.publicKey.uint);
console.log('Original message:', message);
// Show encrypted message
console.log('Encrypted message:', encrypted.encrypted_message_encoded);
console.log('Nonce:', encrypted.nonce_base64);
// Show decrypted message
const decrypted = decryptMessage(encrypted.encrypted_message_encoded, encrypted.nonce_base64, keyPair.secretKey.uint);
console.log('Decrypted message:', decrypted);