JavaScript

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. JavaScript

var success = false;

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

var pkey = new CkPrivateKey();

// 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 CkRsa();

// 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!");