Perl

Load a Private Key from BinData (Any Format)

Demonstrates the Chilkat PrivateKey.LoadAnyFormat method, which loads a private key by inspecting the bytes in a BinData. The first argument is the BinData and the second is the password (used if the detected key is encrypted).

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

Background: When you have key bytes in memory but do not know their exact format — downloaded, decrypted, or pulled from a database — this figures it out for you, recognizing PKCS #1/#8 DER, encrypted PKCS #8, PEM, JWK, Chilkat XML, Microsoft formats, and more. It removes the guesswork of choosing a specific loader, at the small cost of the detection step. Supply the password so it can decrypt an encrypted key without a second call.

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use strict;
use warnings;
use Chilkat2;

# Demonstrates the PrivateKey.LoadAnyFormat method, which loads a private key by inspecting the
# bytes in a BinData.  The 1st argument is the BinData and the 2nd is the password (used if the
# detected key is encrypted).

my $bd = Chilkat2::BinData->new;
my $success = $bd->LoadFile('qa_data/some_private_key');
if (!$success) {
    print $bd->LastErrorText, "\n";
    exit;
}

my $privKey = Chilkat2::PrivateKey->new;

# The key password is not hard-coded in a real application; obtain it from an interactive
# prompt, environment variable, or a secrets vault.
my $password = 'myKeyPassword';

# Chilkat auto-detects the representation: PKCS #1/#8 DER, encrypted PKCS #8, PEM, JWK,
# Chilkat XML, Microsoft formats, and more.
$success = $privKey->LoadAnyFormat($bd, $password);
if (!$success) {
    print $privKey->LastErrorText, "\n";
    exit;
}

print 'Loaded a ', $privKey->KeyType, " private key.\n";