Node.js

PBKDF2 Key Derivation

Demonstrates AES secret key derivation from a password using PBDKF2. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    var crypt = new chilkat.Crypt2();

    var password = "correcthorsebatterystaple";

    //  Derive from the utf-8 byte representation of the password.
    var charset = "utf-8";

    var hashAlg = "sha256";

    crypt.EncodingMode = "hex";
    var saltHex = crypt.GenRandomBytesENC(16);

    var iterationCount = 310000;

    //  Derive a 256-bit key from the password.
    var outputBitLen = 256;

    //  The derived key is returned as a hex or base64 encoded string.
    //  (Note: The salt argument must be a string that also uses
    //  the same encoding.)
    var enc = "hex";

    var hexKey = crypt.Pbkdf2(password,charset,hashAlg,saltHex,iterationCount,outputBitLen,enc);

    console.log(hexKey);

    //  Sample output:
    //  597734C894FF89CFD3B93D925462C24E97724BCB118F6FC919007F5ABC27E768

}

chilkatExample();