Node.js

Working with PEM Encrypted Private Keys

See more PEM Examples

Demonstrates how to load and save PEM encrypted private keys. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    success = false;

    var pem = new chilkat.Pem();

    var pemPassword = "secret";

    //  To load a PEM file containing encrypted private keys, simply
    //  provide the password.
    success = pem.LoadPemFile("/Users/chilkat/testData/pem/pemContainingEncryptedPrivateKeys.pem",pemPassword);
    if (success == false) {
        console.log(pem.LastErrorText);
        return;
    }

    var fac = new chilkat.FileAccess();
    var pemText = fac.ReadEntireTextFile("/Users/chilkat/testData/pem/pemContainingEncryptedPrivateKeys.pem",pemPassword);

    //  To load a PEM from a string, call LoadPem instead of LoadPemFile:
    success = pem.LoadPem(pemText);
    if (success == false) {
        console.log(pem.LastErrorText);
        return;
    }

    //  A few notes:
    //  The PEM may contain both private keys and certificates (or anything else).
    //  The password is utilized for whatever content in the PEM is encrypted.  
    //  It is OK to have both encrypted and non-encrypted content within a given PEM.

    //  PEM private keys can be encrypted in different formats.  The LoadPem and LoadPemFile
    //  methods automatically handle the different formats.
    //  One format is PKCS8 and is indicated by this delimiter within the PEM:

    //  -----BEGIN ENCRYPTED PRIVATE KEY-----
    //  MIICoTAbBgkqhkiG9w0BBQMwDgQIfdD0zv24lgkCAggABIICgE0PdHJmRbNs6cBX
    //  ...

    //  Another format, we'll call "passphrase" looks like this in the PEM:
    //  -----BEGIN RSA PRIVATE KEY-----
    //  Proc-Type: 4,ENCRYPTED
    //  DEK-Info: DES-EDE3-CBC,A4215544D11C5D0C
    //  
    //  paqy9XRexcSjurHfG0xhCaUD0HrvIdhuC0CbRxxxeMlkLaV6+uT80rBxt2AaibWG
    //  ...

    //  Show the bit length of each private key:
    var i;
    var numPrivateKeys = pem.NumPrivateKeys;
    if (numPrivateKeys == 0) {
        console.log((("Error: Expected the PEM to contain private keys.")));
        return;
    }

    var privKey = new chilkat.PrivateKey();
    for (i = 1; i <= numPrivateKeys; i++) {
        pem.PrivateKeyAt(i - 1,privKey);
        console.log(i + ": " + privKey.BitLength + " bits");
    }


}

chilkatExample();