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(PHP Extension) PRODA Get OAuth2 Access Token using JWT

See more PRODA Examples

Demonstrates how to get an OAuth2 access token for the PRODA Australian Government Online Services using a JWT.

For more information, see https://www.servicesaustralia.gov.au/organisations/business/services/proda-provider-digital-access

Chilkat PHP Downloads

PHP Extension for Windows, Linux, MacOS,
Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

// First create a JWT to be sent in the POST to https://vnd.proda.humanservices.gov.au/mga/sps/oauth/oauth20/token

$privKey = new CkPrivateKey();

// Load an RSA private key from a PEM file.
// Chilkat provides alternative methods to load from other formats, or to load from a string or binary data.
$success = $privKey->LoadEncryptedPemFile('qa_data/pem/rsa_passwd.pem','passwd');
if ($success != true) {
    print $privKey->lastErrorText() . "\n";
    exit;
}

$jwt = new CkJwt();

// Build the JOSE header
$jose = new CkJsonObject();
// Use RS256.  Pass the string "RS384" or "RS512" to use RSA with SHA-384 or SHA-512.
$success = $jose->AppendString('alg','RS256');
$success = $jose->AppendString('typ','JWT');
$success = $jose->AppendString('kid','test-device');

// Now build the JWT claims (also known as the payload)
$claims = new CkJsonObject();
$success = $claims->AppendString('iss','9646844092');
$success = $claims->AppendString('sub','test-device');
$success = $claims->AppendString('aud','https://proda.humanservices.gov.au');

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

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

// ---------------------------------------------------------------------
// Build and send the POST, which should look something like this:

// POST https://vnd.proda.humanservices.gov.au/mga/sps/oauth/oauth20/token HTTP/1.1
// Content-Type: application/x-www-form-urlencoded
// Content-Length: 666
// Host: vnd.proda.humanservices.gov.au
// 
// grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Ajwt-bearer&assertion=<jwt>&client_id=VendorClient03

$http = new CkHttp();

$req = new CkHttpRequest();

// Add the request params.
$req->AddParam('grant_type','urn:ietf:params:oauth:grant-type:jwt-bearer');
$req->AddParam('assertion',$jwtToken);
$req->AddParam('client_id','VendorClient03');

// Send the POST
// Chilkat automatically adds the Content-Type (which is application/x-www-form-urlencoded for the PostUrlEncoded method)
// Chilkat also automatically adds the Host and Content-Length headers.

// resp is a CkHttpResponse
$resp = $http->PostUrlEncoded('https://vnd.proda.humanservices.gov.au/mga/sps/oauth/oauth20/token',$req);
if ($http->get_LastMethodSuccess() != true) {
    print $http->lastErrorText() . "\n";
    exit;
}

print 'Response status code = ' . $resp->get_StatusCode() . "\n";
print 'Response body:' . "\n";
print $resp->bodyStr() . "\n";


?>

 

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