diff options
Diffstat (limited to 'vendor/aws/aws-sdk-php/src/Crypto/MaterialsProviderV2.php')
-rw-r--r-- | vendor/aws/aws-sdk-php/src/Crypto/MaterialsProviderV2.php | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/vendor/aws/aws-sdk-php/src/Crypto/MaterialsProviderV2.php b/vendor/aws/aws-sdk-php/src/Crypto/MaterialsProviderV2.php new file mode 100644 index 0000000..685cbf5 --- /dev/null +++ b/vendor/aws/aws-sdk-php/src/Crypto/MaterialsProviderV2.php @@ -0,0 +1,66 @@ +<?php +namespace Aws\Crypto; + +abstract class MaterialsProviderV2 implements MaterialsProviderInterfaceV2 +{ + private static $supportedKeySizes = [ + 128 => true, + 256 => true, + ]; + + /** + * Returns if the requested size is supported by AES. + * + * @param int $keySize Size of the requested key in bits. + * + * @return bool + */ + public static function isSupportedKeySize($keySize) + { + return isset(self::$supportedKeySizes[$keySize]); + } + + /** + * Returns the wrap algorithm name for this Provider. + * + * @return string + */ + abstract public function getWrapAlgorithmName(); + + /** + * Takes an encrypted content encryption key (CEK) and material description + * for use decrypting the key according to the Provider's specifications. + * + * @param string $encryptedCek Encrypted key to be decrypted by the Provider + * for use decrypting other data. + * @param string $materialDescription Material Description for use in + * decrypting the CEK. + * @param string $options Options for use in decrypting the CEK. + * + * @return string + */ + abstract public function decryptCek($encryptedCek, $materialDescription, $options); + + /** + * @param string $keySize Length of a cipher key in bits for generating a + * random content encryption key (CEK). + * @param array $context Context map needed for key encryption + * @param array $options Additional options to be used in CEK generation + * + * @return array + */ + abstract public function generateCek($keySize, $context, $options); + + /** + * @param string $openSslName Cipher OpenSSL name to use for generating + * an initialization vector. + * + * @return string + */ + public function generateIv($openSslName) + { + return openssl_random_pseudo_bytes( + openssl_cipher_iv_length($openSslName) + ); + } +} |