(Node.js) Use Base64 RSA Key to Encrypt

Loads a Base64 RSA key and uses it to encrypt a string, returning the result in base64.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    var pubkey = new chilkat.PublicKey();

    var success = pubkey.LoadBase64("MIICdgIBADA ... A9PXLk+j5A==");
    if (success !== true) {
        console.log(pubkey.LastErrorText);
        return;
    }

    var rsa = new chilkat.Rsa();

    success = rsa.ImportPublicKeyObj(pubkey);
    if (success !== true) {
        console.log(rsa.LastErrorText);
        return;
    }

    rsa.EncodingMode = "base64";

    var encryptedStr = rsa.EncryptStringENC("12345678",false);

    console.log(encryptedStr);

}

chilkatExample();