public function testDhSha1()
{
// generate consumer
$request = $this->generateConsumerRequest();
// generate server
$dhGen = $request['gen'];
$dhModulus = $request['modulus'];
$dhConsumerPub = $request['consumer_public'];
$dhFunc = 'SHA1';
$secret = ProviderAbstract::randomBytes(20);
$res = ProviderAbstract::generateDh($dhGen, $dhModulus, $dhConsumerPub, $dhFunc, $secret);
$this->assertEquals(true, isset($res['pubKey']));
$this->assertEquals(true, isset($res['macKey']));
// calculate consumer
$serverPub = base64_decode($res['pubKey']);
$dhSec = OpenSsl::dhComputeKey($serverPub, $request['pkey']);
$sec = OpenSsl::digest(ProviderAbstract::btwoc($dhSec), $dhFunc, true);
$serverSecret = $sec ^ base64_decode($res['macKey']);
// compare with server
$this->assertEquals(true, $secret === $serverSecret);
}
public function testInitialize()
{
$testCase = $this;
$http = new Http(new Callback(function ($request) use($testCase) {
// association endpoint
if ($request->getUrl()->getPath() == '/server') {
$data = array();
parse_str($request->getBody(), $data);
$testCase->assertEquals('http://specs.openid.net/auth/2.0', $data['openid_ns']);
$testCase->assertEquals('associate', $data['openid_mode']);
$testCase->assertEquals('HMAC-SHA256', $data['openid_assoc_type']);
$testCase->assertEquals('DH-SHA256', $data['openid_session_type']);
$dhGen = $data['openid_dh_gen'];
$dhModulus = $data['openid_dh_modulus'];
$dhConsumerPub = $data['openid_dh_consumer_public'];
$dhFunc = 'SHA1';
$secret = ProviderAbstract::randomBytes(20);
$res = ProviderAbstract::generateDh($dhGen, $dhModulus, $dhConsumerPub, $dhFunc, $secret);
$testCase->assertEquals(true, isset($res['pubKey']));
$testCase->assertEquals(true, isset($res['macKey']));
$body = OpenId::keyValueEncode(array('ns' => 'http://specs.openid.net/auth/2.0', 'assoc_handle' => 'foobar', 'session_type' => 'DH-SHA256', 'assoc_type' => 'HMAC-SHA256', 'expires_in' => 60 * 60, 'dh_server_public' => $res['pubKey'], 'enc_mac_key' => $res['macKey']));
$response = <<<TEXT
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
Date: Sat, 04 Jan 2014 18:19:45 GMT
{$body}
TEXT;
} else {
if ($request->getUrl()->getPath() == '/identity') {
$response = <<<TEXT
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
Date: Sat, 04 Jan 2014 18:19:45 GMT
<html>
\t<head>
\t\t<link rel="openid.server" href="http://openid.com/server" />
\t\t<link rel="openid.delegate" href="http://foo.com" />
\t</head>
</html>
TEXT;
}
}
return Response::convert($response, ResponseParser::MODE_LOOSE)->toString();
}));
$store = new Store\Memory();
$openid = new OpenId($http, 'http://localhost.com', $store);
$openid->initialize('http://foo.com/identity', 'http://localhost.com/callback');
// check whether the store has the association
$assoc = $store->loadByHandle('http://openid.com/server', 'foobar');
$this->assertEquals('foobar', $assoc->getAssocHandle());
$this->assertEquals('HMAC-SHA256', $assoc->getAssocType());
$this->assertEquals('DH-SHA256', $assoc->getSessionType());
$this->assertEquals(3600, $assoc->getExpire());
// check redirect url
$url = $openid->getRedirectUrl();
$this->assertEquals('http://specs.openid.net/auth/2.0', $url->getParam('openid.ns'));
$this->assertEquals('checkid_setup', $url->getParam('openid.mode'));
$this->assertEquals('http://localhost.com/callback', $url->getParam('openid.return_to'));
$this->assertEquals('http://localhost.com', $url->getParam('openid.realm'));
$this->assertEquals('http://foo.com/identity', $url->getParam('openid.claimed_id'));
$this->assertEquals('http://foo.com', $url->getParam('openid.identity'));
$this->assertEquals('foobar', $url->getParam('openid.assoc_handle'));
// the user gets redirected from the openid provider to our callback now
// we verfiy the data
$signed = array('ns', 'mode', 'op_endpoint', 'return_to', 'response_nonce', 'assoc_handle');
$data = array('openid_ns' => 'http://specs.openid.net/auth/2.0', 'openid_mode' => 'id_res', 'openid_op_endpoint' => 'http://openid.com/server', 'openid_return_to' => 'http://localhost.com/callback', 'openid_response_nonce' => uniqid(), 'openid_assoc_handle' => $assoc->getAssocHandle(), 'openid_signed' => implode(',', $signed));
// generate signature
$sig = OpenId::buildSignature(OpenId::extractParams($data), $signed, $assoc->getSecret(), $assoc->getAssocType());
$data['openid_sig'] = $sig;
// verify
$result = $openid->verify($data);
$this->assertTrue($result);
}
/**
* Generates an association from an request
*
* @param PSX\OpenId\Provider\Data\AssociationRequest $request
* @return PSX\OpenId\Provider\Association
*/
public function generate(AssociationRequest $request)
{
// generate secret
switch ($request->getAssocType()) {
case 'HMAC-SHA1':
$secret = ProviderAbstract::randomBytes(20);
$macFunc = 'SHA1';
break;
case 'HMAC-SHA256':
$secret = ProviderAbstract::randomBytes(32);
$macFunc = 'SHA256';
break;
default:
throw new InvalidDataException('Invalid association type');
break;
}
// generate dh
switch ($request->getSessionType()) {
case 'no-encryption':
// $secret = base64_encode($secret);
// $this->macKey = $secret;
throw new InvalidDataException('no-encryption not supported');
break;
case 'DH-SHA1':
$dh = ProviderAbstract::generateDh($request->getDhGen(), $request->getDhModulus(), $request->getDhConsumerPublic(), $macFunc, $secret);
$this->dhServerPublic = $dh['pubKey'];
$this->encMacKey = $dh['macKey'];
break;
case 'DH-SHA256':
$dh = ProviderAbstract::generateDh($request->getDhGen(), $request->getDhModulus(), $request->getDhConsumerPublic(), $macFunc, $secret);
$this->dhServerPublic = $dh['pubKey'];
$this->encMacKey = $dh['macKey'];
break;
default:
throw new InvalidDataException('Invalid association type');
break;
}
$this->assocHandle = ProviderAbstract::generateHandle();
$this->secret = base64_encode($secret);
$this->macFunc = $macFunc;
$assoc = new Association();
$assoc->setAssocHandle($this->assocHandle);
$assoc->setAssocType($request->getAssocType());
$assoc->setSessionType($request->getSessionType());
$assoc->setSecret($this->secret);
return $assoc;
}
