public function testNonAESEncryptionSupport()
{
$blowfishParams = Crypto::getDefaultParams(['key' => Crypto::generateRandomKey(128), 'algorithm' => 'bf', 'mode' => 'ecb']);
$encrypted = Crypto::encrypt('test', $blowfishParams);
$decrypted = Crypto::decrypt($encrypted, $blowfishParams);
$this->assertNotEquals($encrypted, $decrypted);
$this->assertEquals('test', $decrypted);
try {
Crypto::getDefaultParams(['key' => Crypto::generateRandomKey(), 'algorithm' => 'fake']);
} catch (\Exception $ex) {
$this->assertInstanceOf('Ably\\Exceptions\\AblyException', $ex, 'Expected to raise an exception on unknown encryption mode');
}
}
/**
* Decodes message's data field according to encoding
* @throws AblyException
*/
protected function decode()
{
$this->originalData = $this->data;
$this->originalEncoding = $this->encoding;
if (!empty($this->encoding)) {
$encodings = explode('/', $this->encoding);
foreach (array_reverse($encodings) as $encoding) {
if ($encoding == 'base64') {
$this->data = base64_decode($this->data);
if ($this->data === false) {
throw new AblyException('Could not base64-decode message data');
}
array_pop($encodings);
} else {
if ($encoding == 'json') {
$this->data = json_decode($this->data);
if ($this->data === null) {
throw new AblyException('Could not JSON-decode message data');
}
array_pop($encodings);
} else {
if (strpos($encoding, 'cipher+') === 0) {
if (!$this->cipherParams) {
Log::e('Could not decrypt message data, no cipherParams provided');
break;
}
$data = Crypto::decrypt($this->data, $this->cipherParams);
if ($data === false) {
Log::e('Could not decrypt message data');
break;
}
$this->data = $data;
array_pop($encodings);
}
}
}
}
$this->encoding = count($encodings) ? implode('/', $encodings) : null;
}
}
