(Perl) Create JWT using a Brainpool EC Key

See more JSON Web Token (JWT) Examples

• BP160R1
• BP192R1
• BP224R1
• BP256R1
• BP320R1
• BP384R1
• BP512R1

This example also demonstrates how to include time constraints:

• nbf: Not Before Time
• exp: Expiration Time
• iat: Issue At Time

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux

use chilkat();

# Demonstrates how to create a JWT using a brainpool EC private key.

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

$privKey = chilkat::CkPrivateKey->new();

# Load a brainpool EC key.
$success = $privKey->LoadPemFile("c:/qa_data/pem/ec_brainpool_privKey.pem");
if ($success != 1) {
    print $privKey->lastErrorText() . "\r\n";
    exit;
}

# You can examine the curve name of the key you just loaded by getting the private in XML format:
# <ECCKeyValue curve="CURVE_NAME">...</ECCKeyValue>
print $privKey->getXml() . "\r\n";

$jwt = chilkat::CkJwt->new();

# Build the JOSE header
$jose = chilkat::CkJsonObject->new();
# Use the brainpool curve name matching the private key you just loaded.
# Use "BP256R1", or "BP384R1", etc.   
$success = $jose->AppendString("alg","BP256R1");
$success = $jose->AppendString("typ","JWT");

# Now build the JWT claims (also known as the payload)
$claims = chilkat::CkJsonObject->new();
$success = $claims->AppendString("iss","http://example.org");
$success = $claims->AppendString("sub","John");
$success = $claims->AppendString("aud","http://example.com");

# Set the timestamp of when the JWT was created to now.
$curDateTime = $jwt->GenNumericDate(0);
$success = $claims->AddIntAt(-1,"iat",$curDateTime);

# Set the "not process before" timestamp to now.
$success = $claims->AddIntAt(-1,"nbf",$curDateTime);

# Set the timestamp defining an expiration time (end time) for the token
# to be now + 1 hour (3600 seconds)
$success = $claims->AddIntAt(-1,"exp",$curDateTime + 3600);

# Produce the smallest possible JWT:
$jwt->put_AutoCompact(1);

# Create the JWT token.  This is where the ECC signature is created.
$token = $jwt->createJwtPk($jose->emit(),$claims->emit(),$privKey);

print $token . "\r\n";