1 files changed, 125 insertions, 0 deletions
diff --git a/vendor/aws/aws-sdk-php/src/Crypto/AesGcmEncryptingStream.php b/vendor/aws/aws-sdk-php/src/Crypto/AesGcmEncryptingStream.php
new file mode 100644
index 0000000..13357f5
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/Crypto/AesGcmEncryptingStream.php
@@ -0,0 +1,125 @@
+<?php
+namespace Aws\Crypto;
+
+use Aws\Crypto\Polyfill\AesGcm;
+use Aws\Crypto\Polyfill\Key;
+use GuzzleHttp\Psr7;
+use GuzzleHttp\Psr7\StreamDecoratorTrait;
+use Psr\Http\Message\StreamInterface;
+use \RuntimeException;
+
+/**
+ * @internal Represents a stream of data to be gcm encrypted.
+ */
+class AesGcmEncryptingStream implements AesStreamInterface, AesStreamInterfaceV2
+{
+    use StreamDecoratorTrait;
+
+    private $aad;
+
+    private $initializationVector;
+
+    private $key;
+
+    private $keySize;
+
+    private $plaintext;
+
+    private $tag = '';
+
+    private $tagLength;
+
+    /**
+     * Same as non-static 'getAesName' method, allowing calls in a static
+     * context.
+     *
+     * @return string
+     */
+    public static function getStaticAesName()
+    {
+        return 'AES/GCM/NoPadding';
+    }
+
+    /**
+     * @param StreamInterface $plaintext
+     * @param string $key
+     * @param string $initializationVector
+     * @param string $aad
+     * @param int $tagLength
+     * @param int $keySize
+     */
+    public function __construct(
+        StreamInterface $plaintext,
+        $key,
+        $initializationVector,
+        $aad = '',
+        $tagLength = 16,
+        $keySize = 256
+    ) {
+
+        $this->plaintext = $plaintext;
+        $this->key = $key;
+        $this->initializationVector = $initializationVector;
+        $this->aad = $aad;
+        $this->tagLength = $tagLength;
+        $this->keySize = $keySize;
+    }
+
+    public function getOpenSslName()
+    {
+        return "aes-{$this->keySize}-gcm";
+    }
+
+    /**
+     * Same as static method and retained for backwards compatibility
+     *
+     * @return string
+     */
+    public function getAesName()
+    {
+        return self::getStaticAesName();
+    }
+
+    public function getCurrentIv()
+    {
+        return $this->initializationVector;
+    }
+
+    public function createStream()
+    {
+        if (version_compare(PHP_VERSION, '7.1', '<')) {
+            return Psr7\Utils::streamFor(AesGcm::encrypt(
+                (string) $this->plaintext,
+                $this->initializationVector,
+                new Key($this->key),
+                $this->aad,
+                $this->tag,
+                $this->keySize
+            ));
+        } else {
+            return Psr7\Utils::streamFor(\openssl_encrypt(
+                (string)$this->plaintext,
+                $this->getOpenSslName(),
+                $this->key,
+                OPENSSL_RAW_DATA,
+                $this->initializationVector,
+                $this->tag,
+                $this->aad,
+                $this->tagLength
+            ));
+        }
+    }
+
+    /**
+     * @return string
+     */
+    public function getTag()
+    {
+        return $this->tag;
+    }
+
+    public function isWritable()
+    {
+        return false;
+    }
+}