(Node.js) Load an SSH Key from a File (Many Formats Supported)

Demonstrates how to load an SSH public or private key object from a file. The file can be in any of the following formats:

• OpenSSH private key
• OpenSSH public key
• PuTTY private key
• RFC 4716 public 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 sshkey = new chilkat.SshKey();

    // First, use the LoadText convenience method to load a text file (of any SSH key format)
    // into a string:
    var strKey = sshkey.LoadText("../mySshKeys/myKey.txt");

    // Next, load the key into the SSH key object.

    // If the key is an OpenSSH private key:
    // (In actuality, the From* methods will automatically detect the format and load
    // the key correctly.  For example, if a PuTTY private key is passed to FromOpenSshPrivateKey,
    // it  will still load correctly.)
    var success = sshkey.FromOpenSshPrivateKey(strKey);
    if (success !== true) {
        console.log(sshkey.LastErrorText);
    }
    else {
        console.log("Loaded OpenSSH private key.");
        return;
    }

    // If the key is an OpenSSH public key:
    success = sshkey.FromOpenSshPublicKey(strKey);
    if (success !== true) {
        console.log(sshkey.LastErrorText);
    }
    else {
        console.log("Loaded OpenSSH public key.");
        return;
    }

    // If the key is a PuTTY private key:
    success = sshkey.FromPuttyPrivateKey(strKey);
    if (success !== true) {
        console.log(sshkey.LastErrorText);
    }
    else {
        console.log("Loaded PuTTY private key.");
        return;
    }

    // If the key is an RFC 4716 public key:
    success = sshkey.FromRfc4716PublicKey(strKey);
    if (success !== true) {
        console.log(sshkey.LastErrorText);
    }
    else {
        console.log("Loaded RFC 4716 public key.");
    }


}

chilkatExample();