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SodiumCipher.php 0000644 00000007137 15172671425 0007672 0 ustar 00 <?php /** * Joomla! Content Management System * * @copyright (C) 2017 Open Source Matters, Inc. <https://www.joomla.org> * @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Crypt\Cipher; use Joomla\Crypt\CipherInterface; use Joomla\Crypt\Key; use ParagonIE\Sodium\Compat; // phpcs:disable PSR1.Files.SideEffects \defined('JPATH_PLATFORM') or die; // phpcs:enable PSR1.Files.SideEffects /** * JCrypt cipher for sodium algorithm encryption, decryption and key generation. * * @since 3.8.0 */ class SodiumCipher implements CipherInterface { /** * The message nonce to be used with encryption/decryption * * @var string * @since 3.8.0 */ private $nonce; /** * Method to decrypt a data string. * * @param string $data The encrypted string to decrypt. * @param Key $key The key object to use for decryption. * * @return string The decrypted data string. * * @since 3.8.0 * @throws \RuntimeException */ public function decrypt($data, Key $key) { // Validate key. if ($key->getType() !== 'sodium') { throw new \InvalidArgumentException('Invalid key of type: ' . $key->getType() . '. Expected sodium.'); } if (!$this->nonce) { throw new \RuntimeException('Missing nonce to decrypt data'); } $decrypted = Compat::crypto_box_open( $data, $this->nonce, Compat::crypto_box_keypair_from_secretkey_and_publickey($key->getPrivate(), $key->getPublic()) ); if ($decrypted === false) { throw new \RuntimeException('Malformed message or invalid MAC'); } return $decrypted; } /** * Method to encrypt a data string. * * @param string $data The data string to encrypt. * @param Key $key The key object to use for encryption. * * @return string The encrypted data string. * * @since 3.8.0 * @throws \RuntimeException */ public function encrypt($data, Key $key) { // Validate key. if ($key->getType() !== 'sodium') { throw new \InvalidArgumentException('Invalid key of type: ' . $key->getType() . '. Expected sodium.'); } if (!$this->nonce) { throw new \RuntimeException('Missing nonce to decrypt data'); } return Compat::crypto_box( $data, $this->nonce, Compat::crypto_box_keypair_from_secretkey_and_publickey($key->getPrivate(), $key->getPublic()) ); } /** * Method to generate a new encryption key object. * * @param array $options Key generation options. * * @return Key * * @since 3.8.0 * @throws \RuntimeException */ public function generateKey(array $options = []) { // Generate the encryption key. $pair = Compat::crypto_box_keypair(); return new Key('sodium', Compat::crypto_box_secretkey($pair), Compat::crypto_box_publickey($pair)); } /** * Check if the cipher is supported in this environment. * * @return boolean * * @since 4.0.0 */ public static function isSupported(): bool { return class_exists(Compat::class); } /** * Set the nonce to use for encrypting/decrypting messages * * @param string $nonce The message nonce * * @return void * * @since 3.8.0 */ public function setNonce($nonce) { $this->nonce = $nonce; } } CryptoCipher.php 0000644 00000007741 15172671425 0007713 0 ustar 00 <?php /** * Joomla! Content Management System * * @copyright (C) 2017 Open Source Matters, Inc. <https://www.joomla.org> * @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Crypt\Cipher; use Joomla\Crypt\CipherInterface; use Joomla\Crypt\Key; // phpcs:disable PSR1.Files.SideEffects \defined('JPATH_PLATFORM') or die; // phpcs:enable PSR1.Files.SideEffects /** * Crypt cipher for encryption, decryption and key generation via the php-encryption library. * * @since 3.5 * * @deprecated 4.3 will be removed in 6.0 * Will be removed without replacement use SodiumCipher instead */ class CryptoCipher implements CipherInterface { /** * Method to decrypt a data string. * * @param string $data The encrypted string to decrypt. * @param Key $key The key object to use for decryption. * * @return string The decrypted data string. * * @since 3.5 * @throws \RuntimeException */ public function decrypt($data, Key $key) { // Validate key. if ($key->getType() !== 'crypto') { throw new \InvalidArgumentException('Invalid key of type: ' . $key->getType() . '. Expected crypto.'); } // Decrypt the data. try { return \Crypto::Decrypt($data, $key->getPublic()); } catch (\InvalidCiphertextException $ex) { throw new \RuntimeException('DANGER! DANGER! The ciphertext has been tampered with!', $ex->getCode(), $ex); } catch (\CryptoTestFailedException $ex) { throw new \RuntimeException('Cannot safely perform decryption', $ex->getCode(), $ex); } catch (\CannotPerformOperationException $ex) { throw new \RuntimeException('Cannot safely perform decryption', $ex->getCode(), $ex); } } /** * Method to encrypt a data string. * * @param string $data The data string to encrypt. * @param Key $key The key object to use for encryption. * * @return string The encrypted data string. * * @since 3.5 * @throws \RuntimeException */ public function encrypt($data, Key $key) { // Validate key. if ($key->getType() !== 'crypto') { throw new \InvalidArgumentException('Invalid key of type: ' . $key->getType() . '. Expected crypto.'); } // Encrypt the data. try { return \Crypto::Encrypt($data, $key->getPublic()); } catch (\CryptoTestFailedException $ex) { throw new \RuntimeException('Cannot safely perform encryption', $ex->getCode(), $ex); } catch (\CannotPerformOperationException $ex) { throw new \RuntimeException('Cannot safely perform encryption', $ex->getCode(), $ex); } } /** * Method to generate a new encryption key object. * * @param array $options Key generation options. * * @return Key * * @since 3.5 * @throws \RuntimeException */ public function generateKey(array $options = []) { // Generate the encryption key. try { $public = \Crypto::CreateNewRandomKey(); } catch (\CryptoTestFailedException $ex) { throw new \RuntimeException('Cannot safely create a key', $ex->getCode(), $ex); } catch (\CannotPerformOperationException $ex) { throw new \RuntimeException('Cannot safely create a key', $ex->getCode(), $ex); } // Explicitly flag the private as unused in this cipher. $private = 'unused'; return new Key('crypto', $private, $public); } /** * Check if the cipher is supported in this environment. * * @return boolean * * @since 4.0.0 */ public static function isSupported(): bool { try { \Crypto::RuntimeTest(); return true; } catch (\CryptoTestFailedException $e) { return false; } } }
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