Added module for hashing

GCryptCLI/include/ModuleHashing.h

@@ -0,0 +1,18 @@
+#ifndef GCRYPTCLI_MODULE_HASHING_H
+#define GCRYPTCLI_MODULE_HASHING_H
+
+namespace Module {
+  //! This module will hash supplied input
+  class Hashing {
+    public:
+      //! Will run the module
+      static void Run();
+
+    private:
+    // No instanciation! >:(
+    Hashing() {};
+  };
+}
+
+#endif
+

GCryptCLI/src/Configuration.cpp

@@ -93,11 +93,8 @@ void Configuration::DecideCiphertextFormat() {
 
   // So we have no iobase explicitly specified.. Let's default..
 
-  // If we are encrypting or hashing,
-  else if (
-      (activeModule == MODULE::ENCRYPTION) ||
-      (activeModule == MODULE::HASH)
-  ) {
+  // If we are encrypting,
+  else if (activeModule == MODULE::ENCRYPTION) {
     // and input comes from a parameter,
     // and output goes to stdout,
     // let's assume base-16.
@@ -116,6 +113,12 @@ void Configuration::DecideCiphertextFormat() {
 
   }
 
+  // Else, if we are hashing,
+  else if (activeModule == MODULE::HASH) {
+    // output is always defaults to base 16
+    ciphertextFormat = IOBASE_FORMAT::BASE_16;
+  }
+
   // Else, if we are decrypting,
   else if (activeModule == MODULE::DECRYPTION) {
     // and input comes from a parameter, we'll assume base-16.

GCryptCLI/src/ModuleHashing.cpp

@@ -0,0 +1,53 @@
+#include "ModuleHashing.h"
+#include "DataIngestionLayer.h"
+#include "DataOutputLayer.h"
+#include "KeyManager.h"
+#include <GCrypt/GHash.h>
+
+using namespace Module;
+using namespace Leonetienne::GCrypt;
+
+void Hashing::Run() {
+
+  // Initialize the data ingestion layer
+  IO::DataIngestionLayer::Init();
+
+  // Initialize the data output layer
+  IO::DataOutputLayer::Init();
+
+  // Initialize a ghasher
+  GHash hasher;
+
+  // Read in new blocks, if not reached eof
+  while (!IO::DataIngestionLayer::IsFinished()) {
+    if (!IO::DataIngestionLayer::ReachedEOF()) {
+      IO::DataIngestionLayer::ReadBlock();
+    }
+
+    // Process a block, if one is ready
+    if (IO::DataIngestionLayer::IsBlockReady()) {
+      const Block cleartext = IO::DataIngestionLayer::GetNextBlock();
+      hasher.Digest(cleartext);
+    }
+  }
+
+  // Wait until we've finished digesting all blocks
+  // Enqueue that single block (the hash result) to the output layer
+  IO::DataOutputLayer::Enqueue(hasher.GetHashsum());
+
+  // Tell the data output layer that that was the last block
+  IO::DataOutputLayer::ReachedEOF();
+
+  // Dump it
+  while (!IO::DataOutputLayer::IsFinished()) {
+    IO::DataOutputLayer::WriteBlock();
+  }
+
+  // Destruct the data ingestion layer
+  IO::DataIngestionLayer::Destruct();
+
+  // Destruct the data output layer
+  IO::DataOutputLayer::Destruct();
+
+  return;
+}

GCryptCLI/src/main.cpp

@@ -4,6 +4,7 @@
 #include "ModuleGenerateKey.h"
 #include "ModuleEncryption.h"
 #include "ModuleDecryption.h"
+#include "ModuleHashing.h"
 
 int main(int argc, char* const* argv) {
 
@@ -18,10 +19,6 @@ int main(int argc, char* const* argv) {
 
   // Launch our module
   switch (Configuration::activeModule) {
-    case Configuration::MODULE::GENERATE_KEY:
-      Module::GenerateKey::Run();
-      break;
-
     case Configuration::MODULE::ENCRYPTION:
       Module::Encryption::Run();
       break;
@@ -29,6 +26,14 @@ int main(int argc, char* const* argv) {
     case Configuration::MODULE::DECRYPTION:
       Module::Decryption::Run();
       break;
+
+    case Configuration::MODULE::GENERATE_KEY:
+      Module::GenerateKey::Run();
+      break;
+
+    case Configuration::MODULE::HASH:
+      Module::Hashing::Run();
+      break;
   }
 
   return 0;