Node.js KeyObject.from() Method

Node.js keyObject.equals() Method

The keyObject.form() method is an inbuilt application programming interface of class keyObject within the crypto module which is used to convert the CryptoKey instance in KeyObject. It is a static method of the class KeyObject.

Syntax:

keyObject.form( key )

Parameters: This method takes only one parameter describing below.

key: This parameter holds the CryptoKey value.

Return Value: This method returns the instance to KeyObject.

Example:

Filename: index.js

Javascript

// Node.js program to demonstrate the 
// keyObject.form() method 
 
// Importing the crypto module
const { webcrypto: { subtle }, KeyObject } 
    = require('crypto');
 
// Generating the crypto key that is 
// not a keyObject instance
(async function () {
    const key = await subtle.generateKey({
        name: 'HMAC',
        hash: 'SHA-256',
        length: 256
    }, true, ['sign', 'verify']);
 
    try {
 
        // Calling keyObject.form() method to
        // get the instance to keyObject
        const keyObject = KeyObject.from(key);
        console.log("Successfully converted a "
        + "cryptoKey to instance of keyObject");
    }
    catch (error) {
        console.log("Error has been occurred");
    }
})();

Run index.js file using below command:

node index.js

Output:

Successfully converted a cryptoKey to instance of keyObject.

Reference: https://nodejs.org/api/crypto.html#crypto_class_keyobject

Tags:

#Node.js-crypto-module #Node.js-Methods #Node.js #Web Technologies

Node.js keyObject.equals() Method

Node.js KeyObject.from() Method

Javascript

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