cifrado en nodejs

Question

estoy tratando de portar el siguiente código php a javascript en Node.js:

$mac = hash_hmac('SHA256', 'string', 'secret', true);
$coded = base64_encode($mac);

He intentado lo siguiente:

var Crypto = require('crypto');
var code = Crypto.util.bytesToBase64(Crypto.HMAC(Crypto.SHA256, 'string', 'secret', { asBytes: true }));

consigo el error:

TypeError: Object #Object has no method 'HMAC'

Soy nuevo en node.js, wh ¿Estoy haciendo algo mal?

Actualización:

var code = Crypto.createHmac('SHA256', secret_key).update(to_encode).digest('base64');

Answer 1

Usted desea utilizar la función createHmac lugar.

Crypto.createHmac("SHA256", 'secret').update('string').digest('base64') 

Answer 2

El método se llama createHmac

> Crypto = require('crypto'); 
{ Credentials: [Function: Credentials], 
    createCredentials: [Function], 
    Hash: [Function], 
    createHash: [Function], 
    Hmac: [Function], 
    createHmac: [Function], 
    Cipher: [Function], 
    createCipher: [Function], 
    createCipheriv: [Function], 
    Decipher: [Function], 
    createDecipher: [Function], 
    createDecipheriv: [Function], 
    Sign: [Function], 
    createSign: [Function], 
    Verify: [Function], 
    createVerify: [Function], 
    DiffieHellman: [Function], 
    createDiffieHellman: [Function], 
    pbkdf2: [Function], 
    randomBytes: [Function], 
    pseudoRandomBytes: [Function], 
    rng: [Function], 
    prng: [Function] }