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installed plugin Infinite Uploads version 2.0.8

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KawaiiPunk
2025-05-02 12:03:21 +00:00
committed by Gitium
parent 7ca941b591
commit 8fefb19ab4
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114
wp-content/plugins/infinite-uploads/vendor/Aws3/Aws/Crypto/EncryptionTrait.php vendored Normal file
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<?php
namespace UglyRobot\Infinite_Uploads\Aws\Crypto;
use UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7;
use UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7\AppendStream;
use UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7\Stream;
trait EncryptionTrait
{
private static $allowedOptions = ['Cipher' => true, 'KeySize' => true, 'Aad' => true];
/**
* Dependency to generate a CipherMethod from a set of inputs for loading
* in to an AesEncryptingStream.
*
* @param string $cipherName Name of the cipher to generate for encrypting.
* @param string $iv Base Initialization Vector for the cipher.
* @param int $keySize Size of the encryption key, in bits, that will be
* used.
*
* @return Cipher\CipherMethod
*
* @internal
*/
protected abstract function buildCipherMethod($cipherName, $iv, $keySize);
/**
* Builds an AesStreamInterface and populates encryption metadata into the
* supplied envelope.
*
* @param Stream $plaintext Plain-text data to be encrypted using the
* materials, algorithm, and data provided.
* @param array $cipherOptions Options for use in determining the cipher to
* be used for encrypting data.
* @param MaterialsProvider $provider A provider to supply and encrypt
* materials used in encryption.
* @param MetadataEnvelope $envelope A storage envelope for encryption
* metadata to be added to.
*
* @return AesStreamInterface
*
* @throws \InvalidArgumentException Thrown when a value in $cipherOptions
* is not valid.
*
* @internal
*/
public function encrypt(\UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7\Stream $plaintext, array $cipherOptions, \UglyRobot\Infinite_Uploads\Aws\Crypto\MaterialsProvider $provider, \UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope $envelope)
{
$materialsDescription = $provider->getMaterialsDescription();
$cipherOptions = array_intersect_key($cipherOptions, self::$allowedOptions);
if (empty($cipherOptions['Cipher'])) {
throw new \InvalidArgumentException('An encryption cipher must be' . ' specified in the "cipher_options".');
}
if (!self::isSupportedCipher($cipherOptions['Cipher'])) {
throw new \InvalidArgumentException('The cipher requested is not' . ' supported by the SDK.');
}
if (empty($cipherOptions['KeySize'])) {
$cipherOptions['KeySize'] = 256;
}
if (!is_int($cipherOptions['KeySize'])) {
throw new \InvalidArgumentException('The cipher "KeySize" must be' . ' an integer.');
}
if (!\UglyRobot\Infinite_Uploads\Aws\Crypto\MaterialsProvider::isSupportedKeySize($cipherOptions['KeySize'])) {
throw new \InvalidArgumentException('The cipher "KeySize" requested' . ' is not supported by AES (128, 192, or 256).');
}
$cipherOptions['Iv'] = $provider->generateIv($this->getCipherOpenSslName($cipherOptions['Cipher'], $cipherOptions['KeySize']));
$cek = $provider->generateCek($cipherOptions['KeySize']);
list($encryptingStream, $aesName) = $this->getEncryptingStream($plaintext, $cek, $cipherOptions);
// Populate envelope data
$envelope[\UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope::CONTENT_KEY_V2_HEADER] = $provider->encryptCek($cek, $materialsDescription);
unset($cek);
$envelope[\UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope::IV_HEADER] = base64_encode($cipherOptions['Iv']);
$envelope[\UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope::KEY_WRAP_ALGORITHM_HEADER] = $provider->getWrapAlgorithmName();
$envelope[\UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope::CONTENT_CRYPTO_SCHEME_HEADER] = $aesName;
$envelope[\UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope::UNENCRYPTED_CONTENT_LENGTH_HEADER] = strlen($plaintext);
$envelope[\UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope::MATERIALS_DESCRIPTION_HEADER] = json_encode($materialsDescription);
if (!empty($cipherOptions['Tag'])) {
$envelope[\UglyRobot\Infinite_Uploads\Aws\Crypto\MetadataEnvelope::CRYPTO_TAG_LENGTH_HEADER] = strlen($cipherOptions['Tag']) * 8;
}
return $encryptingStream;
}
/**
* Generates a stream that wraps the plaintext with the proper cipher and
* uses the content encryption key (CEK) to encrypt the data when read.
*
* @param Stream $plaintext Plain-text data to be encrypted using the
* materials, algorithm, and data provided.
* @param string $cek A content encryption key for use by the stream for
* encrypting the plaintext data.
* @param array $cipherOptions Options for use in determining the cipher to
* be used for encrypting data.
*
* @return [AesStreamInterface, string]
*
* @internal
*/
protected function getEncryptingStream(\UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7\Stream $plaintext, $cek, &$cipherOptions)
{
switch ($cipherOptions['Cipher']) {
case 'gcm':
$cipherOptions['TagLength'] = 16;
$cipherTextStream = new \UglyRobot\Infinite_Uploads\Aws\Crypto\AesGcmEncryptingStream($plaintext, $cek, $cipherOptions['Iv'], $cipherOptions['Aad'] = isset($cipherOptions['Aad']) ? $cipherOptions['Aad'] : null, $cipherOptions['TagLength'], $cipherOptions['KeySize']);
if (!empty($cipherOptions['Aad'])) {
trigger_error("'Aad' has been supplied for content encryption" . " with " . $cipherTextStream->getAesName() . ". The" . " PHP SDK encryption client can decrypt an object" . " encrypted in this way, but other AWS SDKs may not be" . " able to.", E_USER_WARNING);
}
$appendStream = new \UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7\AppendStream([$cipherTextStream->createStream()]);
$cipherOptions['Tag'] = $cipherTextStream->getTag();
$appendStream->addStream(\UglyRobot\Infinite_Uploads\GuzzleHttp\Psr7\stream_for($cipherOptions['Tag']));
return [$appendStream, $cipherTextStream->getAesName()];
default:
$cipherMethod = $this->buildCipherMethod($cipherOptions['Cipher'], $cipherOptions['Iv'], $cipherOptions['KeySize']);
$cipherTextStream = new \UglyRobot\Infinite_Uploads\Aws\Crypto\AesEncryptingStream($plaintext, $cek, $cipherMethod);
return [$cipherTextStream, $cipherTextStream->getAesName()];
}
}
}