Added encryption module, and data output layer

GCryptCLI/src/ModuleEncryption.cpp

@@ -0,0 +1,57 @@
+#include "ModuleEncryption.h"
+#include "DataIngestionLayer.h"
+#include "DataOutputLayer.h"
+#include "KeyManager.h"
+#include <iostream>
+#include <GCrypt/GCipher.h>
+
+using namespace Module;
+using namespace Leonetienne::GCrypt;
+
+void Encryption::Run() {
+
+  // Initialize the data ingestion layer
+  IO::DataIngestionLayer::Init();
+
+  // Initialize the data output layer
+  IO::DataOutputLayer::Init();
+
+  // Initialize a cipher
+  GCipher cipher(
+    KeyManager::GetKey(),
+    GCipher::DIRECTION::ENCIPHER
+  );
+
+  while (!IO::DataOutputLayer::IsFinished()) {
+    // Read in new blocks, if not reached eof
+    if (!IO::DataIngestionLayer::ReachedEOF()) {
+      IO::DataIngestionLayer::ReadBlock();
+    }
+
+    // Process a block, if one is ready
+    if (IO::DataIngestionLayer::IsBlockReady()) {
+      const Block cleartext = IO::DataIngestionLayer::GetNextBlock();
+      const Block ciphertext = cipher.Digest(cleartext);
+
+      // Enqueue the block for output
+      IO::DataOutputLayer::Enqueue(ciphertext);
+
+      // Tell the data output layer that it just received the
+      // last block, if it did
+      if (IO::DataIngestionLayer::IsFinished()) {
+        IO::DataOutputLayer::ReachedEOF();
+      }
+    }
+
+    // Attempt to write a block
+    IO::DataOutputLayer::WriteBlock();
+  }
+
+  // Destruct the data ingestion layer
+  IO::DataIngestionLayer::Destruct();
+
+  // Destruct the data output layer
+  IO::DataOutputLayer::Destruct();
+
+  return;
+}