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<?php |
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/****************************************************************************** |
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* Wikipedia Account Creation Assistance tool * |
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* * |
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* All code in this file is released into the public domain by the ACC * |
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* Development Team. Please see team.json for a list of contributors. * |
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******************************************************************************/ |
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namespace Waca\Security; |
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use Waca\SiteConfiguration; |
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class EncryptionHelper |
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{ |
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/** |
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* @var SiteConfiguration |
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*/ |
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private $configuration; |
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/** |
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* EncryptionHelper constructor. |
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* |
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* @param SiteConfiguration $configuration |
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*/ |
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public function __construct(SiteConfiguration $configuration) |
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{ |
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$this->configuration = $configuration; |
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} |
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public function encryptData($secret) |
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{ |
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$iv = openssl_random_pseudo_bytes(16); |
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$password = $this->getEncryptionKey(); |
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$encryptedKey = openssl_encrypt($secret, 'aes-256-ctr', $password, OPENSSL_RAW_DATA, $iv); |
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$data = base64_encode($iv) . '|' . base64_encode($encryptedKey); |
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return $data; |
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} |
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public function decryptData($data) |
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{ |
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list($iv, $encryptedKey) = array_map('base64_decode', explode('|', $data)); |
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$password = $this->getEncryptionKey(); |
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$secret = openssl_decrypt($encryptedKey, 'aes-256-ctr', $password, OPENSSL_RAW_DATA, $iv); |
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return $secret; |
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} |
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/** |
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* @return string |
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*/ |
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private function getEncryptionKey() |
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{ |
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return openssl_digest($this->configuration->getTotpEncryptionKey(), 'sha256'); |
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} |
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} |
enwikipedia-acc /
waca
