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(Node.js) Generate RSA Key and return Base64 PKCS8 Private Key

Demonstrates how to generate a new 2048-bit RSA private key and returns the Base64 encoded PKCS8 representation of the private key.

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() {

    var rsa = new chilkat.Rsa();

    var success;

    // Generate a 2048-bit key.  Chilkat RSA supports
    // key sizes ranging from 512 bits to 8192 bits.
    success = rsa.GenerateKey(2048);
    if (success !== true) {
        console.log(rsa.LastErrorText);
        return;
    }

    // privKey: PrivateKey
    var privKey = rsa.ExportPrivateKeyObj();

    // Get the private key in PKCS8 Base64 format
    var privKeyPkcs8Base64 = privKey.GetPkcs8ENC("base64");

    // The key in base64 format will start similar to this:
    // MIIEvAIBADANBgkqhkiG9w0BA...
    console.log(privKeyPkcs8Base64);

}

chilkatExample();

 

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