Node.js

Create PKCS1 RSA Signature with PEM Private Key

See more RSA Examples

Demonstrates how to load a private key from a PEM file and create a PKCS1 RSA digital signature. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var pkey = new chilkat.PrivateKey();

    // Load the private key from an RSA PEM file:
    success = pkey.LoadPemFile("pvkey2_rsa.pem");
    if (success == false) {
        console.log(pkey.LastErrorText);
        return;
    }

    var rsa = new chilkat.Rsa();

    // Import the private key into the RSA object:
    success = rsa.UsePrivateKey(pkey);
    if (success == false) {
        console.log(rsa.LastErrorText);
        return;
    }

    // Get the signature as hex.
    rsa.EncodingMode = "hex";

    var strData = "This is the string to be signed.";

    // Sign the string using the sha-1 hash algorithm.
    // Other valid choices are "md2", "md5", "sha256",
    // "sha384", and "sha512".
    var hexSig = rsa.SignStringENC(strData,"sha-1");

    console.log(hexSig);

    console.log("Success!");

}

chilkatExample();