JavaScript

Load a Public Key from a String

Demonstrates the Chilkat PublicKey.LoadFromString method, which loads a public key from a string. The only argument is the string. Chilkat examines the content and recognizes PEM public keys, unencrypted PEM private keys (taking only the public portion), XML, JWK, and more.

Background: This is the forgiving text loader: rather than requiring you to know the exact format, it inspects whatever string you provide and figures it out. A useful convenience is that it accepts an unencrypted private key too and keeps only the public half — handy when you have a key pair but need just the public key. Use it whenever the textual format is uncertain or varies by source.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

JavaScript

var success = false;

//  Demonstrates the PublicKey.LoadFromString method, which loads a public key from a string.  The
//  only argument is the string.  Chilkat examines the content and recognizes PEM public keys,
//  unencrypted PEM private keys (using only the public portion), XML, JWK, and more.

var pubKey = new CkPublicKey();

//  The PEM text of a public key.
var keyText = "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkq...IDAQAB\n-----END PUBLIC KEY-----";

success = pubKey.LoadFromString(keyText);
if (success == false) {
    console.log(pubKey.LastErrorText);
    return;
}

console.log("Loaded a " + pubKey.KeyType + " public key.");