![]() The second parameter will be the key, which is where we’ll pass in our salt. We’ll use the **crypto.createHmac(algorithm, key)**, which creates and returns an Hmac object that uses the given algorithm and key. Next, we’ll define our hashing algorithm to perform the hashing and salting logic. Browser In the browser, bcrypt.js relies on Web Crypto API 's getRandomValues interface to obtain secure random numbers. npm install bcryptjs var bcrypt require('bcryptjs'). toString('hex') method converts the string to hexadecimal format, while slice(0, rounds) returns just the number of the required value. On node.js, the inbuilt crypto module 's randomBytes interface is used to obtain secure random numbers. Running node index on the console prints the generated random string. Warning: SHA-1 is now considered vulnerable and should not be used for cryptographic applications. They have a variety of applications in cryptography. Return crypto.randomBytes(Math.ceil(rounds / 2)).toString('hex').slice(0, rounds) Digest algorithms, also known as cryptographic hash functions, transform an arbitrarily large block of data into a fixed-size output, usually much shorter than the input. Syntax: crypto.pbkdf2 ( password, salt, iterations, keylen, digest, callback ) Parameters: This method accepts six parameters as mentioned above and described below: password: It can holds string, Buffer, TypedArray, or DataView type of data. Throw new Error('rounds param must be a number') let generateSalt = rounds => is greater than 15,Must be less that 15`) We’ll add a simple validator to check whether the number is greater than 15. This function will take in a number as a parameter to define the length of the salt. The next step is to create a function to generate the random salt. We’ll start by requiring the Node.js crypto module and before creating a simple function to log the functions on the console. If you get Hello.I'm a nodejs developer printed on the consol, you’re good to go. console.log(`Hello.I'm a nodejs developer`) ![]() touch index.jsĪdd the following to your index.js file. This is the root of the application and where we’ll be writing all our hashing codes. To create that, run the following on your terminal. To set up a Node.js application, you’ll need a package.json file to document the dependencies.
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