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PHP ActiveX Examples

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(PHP ActiveX) Create JWT Using HS256, HS384, or HS512

Demonstrates how to create a JWT using HS256, HS384, or HS512. (HS256 is JWT's acronym for HMAC-SHA256.) When HMAC is used, the secret is a shared secret (i.e. password) that both client and server know beforehand.

This example also demonstrates how to include time constraints:

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

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

//  Demonstrates how to create an HMAC JWT using a shared secret (password).

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

$jwt = new COM("Chilkat_9_5_0.Jwt");

//  Build the JOSE header
$jose = new COM("Chilkat_9_5_0.JsonObject");
//  Use HS256.  Pass the string "HS384" or "HS512" to use a different algorithm.
$success = $jose->AppendString('alg','HS256');
$success = $jose->AppendString('typ','JWT');

//  Now build the JWT claims (also known as the payload)
$claims = new COM("Chilkat_9_5_0.JsonObject");
$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->AutoCompact = 1;

$strJwt = $jwt->createJwt($jose->emit(),$claims->emit(),'secret');

print $strJwt . "\n";

?>

 

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