99 lines
4.1 KiB
PHP
99 lines
4.1 KiB
PHP
<?php
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namespace UglyRobot\Infinite_Uploads\Aws\Crypto;
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use UglyRobot\Infinite_Uploads\Aws\Crypto\Cipher\CipherMethod;
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use UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7\Stream;
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/**
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* @internal
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*/
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abstract class AbstractCryptoClientV2
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{
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public static $supportedCiphers = ['gcm'];
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public static $supportedKeyWraps = [\UglyRobot\Infinite_Uploads\Aws\Crypto\KmsMaterialsProviderV2::WRAP_ALGORITHM_NAME];
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public static $supportedSecurityProfiles = ['V2', 'V2_AND_LEGACY'];
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public static $legacySecurityProfiles = ['V2_AND_LEGACY'];
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/**
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* Returns if the passed cipher name is supported for encryption by the SDK.
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*
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* @param string $cipherName The name of a cipher to verify is registered.
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*
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* @return bool If the cipher passed is in our supported list.
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*/
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public static function isSupportedCipher($cipherName)
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{
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return in_array($cipherName, self::$supportedCiphers, true);
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}
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/**
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* Returns an identifier recognizable by `openssl_*` functions, such as
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* `aes-256-gcm`
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*
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* @param string $cipherName Name of the cipher being used for encrypting
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* or decrypting.
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* @param int $keySize Size of the encryption key, in bits, that will be
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* used.
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*
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* @return string
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*/
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protected abstract function getCipherOpenSslName($cipherName, $keySize);
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/**
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* Constructs a CipherMethod for the given name, initialized with the other
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* data passed for use in encrypting or decrypting.
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*
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* @param string $cipherName Name of the cipher to generate for encrypting.
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* @param string $iv Base Initialization Vector for the cipher.
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* @param int $keySize Size of the encryption key, in bits, that will be
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* used.
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*
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* @return CipherMethod
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*
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* @internal
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*/
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protected abstract function buildCipherMethod($cipherName, $iv, $keySize);
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/**
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* Performs a reverse lookup to get the openssl_* cipher name from the
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* AESName passed in from the MetadataEnvelope.
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*
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* @param $aesName
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*
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* @return string
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*
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* @internal
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*/
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protected abstract function getCipherFromAesName($aesName);
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/**
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* Dependency to provide an interface for building an encryption stream for
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* data given cipher details, metadata, and materials to do so.
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*
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* @param Stream $plaintext Plain-text data to be encrypted using the
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* materials, algorithm, and data provided.
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* @param array $options Options for use in encryption.
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* @param MaterialsProviderV2 $provider A provider to supply and encrypt
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* materials used in encryption.
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* @param MetadataEnvelope $envelope A storage envelope for encryption
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* metadata to be added to.
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*
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* @return AesStreamInterface
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*
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* @internal
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*/
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public abstract function encrypt(\UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7\Stream $plaintext, array $options, \UglyRobot\Infinite_Uploads\Aws\Crypto\MaterialsProviderV2 $provider, \UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope $envelope);
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/**
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* Dependency to provide an interface for building a decryption stream for
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* cipher text given metadata and materials to do so.
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*
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* @param string $cipherText Plain-text data to be decrypted using the
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* materials, algorithm, and data provided.
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* @param MaterialsProviderInterface $provider A provider to supply and encrypt
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* materials used in encryption.
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* @param MetadataEnvelope $envelope A storage envelope for encryption
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* metadata to be read from.
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* @param array $options Options used for decryption.
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*
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* @return AesStreamInterface
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*
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* @internal
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*/
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public abstract function decrypt($cipherText, \UglyRobot\Infinite_Uploads\Aws\Crypto\MaterialsProviderInterfaceV2 $provider, \UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope $envelope, array $options = []);
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}
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