Implemented a wrapper for super easy use

Feistel.vcxproj

@@ -140,6 +140,7 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="Feistel.cpp" />
+    <ClCompile Include="GhettoCipherWrapper.cpp" />
     <ClCompile Include="GhettoCipher.cpp" />
     <ClCompile Include="main.cpp" />
   </ItemGroup>
@@ -147,6 +148,7 @@
     <ClInclude Include="Block.h" />
     <ClInclude Include="Config.h" />
     <ClInclude Include="Feistel.h" />
+    <ClInclude Include="GhettoCipherWrapper.h" />
     <ClInclude Include="GhettoCipher.h" />
     <ClInclude Include="Flexblock.h" />
     <ClInclude Include="Halfblock.h" />

Feistel.vcxproj.filters

@@ -24,6 +24,9 @@
     <ClCompile Include="GhettoCipher.cpp">
       <Filter>Quelldateien</Filter>
     </ClCompile>
+    <ClCompile Include="GhettoCipherWrapper.cpp">
+      <Filter>Quelldateien</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="Feistel.h">
@@ -50,5 +53,8 @@
     <ClInclude Include="GhettoCipher.h">
       <Filter>Headerdateien</Filter>
     </ClInclude>
+    <ClInclude Include="GhettoCipherWrapper.h">
+      <Filter>Headerdateien</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

GhettoCipherWrapper.cpp

@@ -0,0 +1,87 @@
+#include "GhettoCipherWrapper.h"
+#include "GhettoCipher.h"
+#include "Util.h"
+
+std::string GhettoCipherWrapper::EncryptString(const std::string& cleartext, const std::string& password)
+{
+	// Instanciate our cipher and supply a key
+	GhettoCipher cipher(password);
+
+	// Recode the ascii-string to bits
+	const Flexblock cleartext_bits = StringToBits(cleartext);
+
+	// Encrypt our cleartext bits
+	const Flexblock ciphertext_bits = cipher.Encipher(cleartext_bits);
+
+	// Recode the ciphertext bits to a hex-string
+	const std::string ciphertext = BitsToHexstring(ciphertext_bits);
+
+	// Return it
+	return ciphertext;
+}
+
+std::string GhettoCipherWrapper::DecryptString(const std::string& ciphertext, const std::string& password)
+{
+	// Instanciate our cipher and supply a key
+	GhettoCipher cipher(password);
+
+	// Recode the hex-string to bits
+	const Flexblock ciphertext_bits = HexstringToBits(ciphertext);
+
+	// Decrypt the ciphertext bits
+	const std::string cleartext_bits = cipher.Decipher(ciphertext_bits);
+
+	// Recode the cleartext bits to an ascii-string
+	const std::string cleartext = BitsToString(cleartext_bits);
+
+	// Return it
+	return cleartext;
+}
+
+bool GhettoCipherWrapper::EncryptFile(const std::string& filename_in, const std::string& filename_out, const std::string& password)
+{
+	try
+	{
+		// Read the file to bits
+		const Flexblock cleartext_bits = ReadFileToBits(filename_in);
+
+		// Instanciate our cipher and supply a key
+		GhettoCipher cipher(password);
+
+		// Encrypt our cleartext bits
+		const Flexblock ciphertext_bits = cipher.Encipher(cleartext_bits);
+
+		// Write our ciphertext bits to file
+		WriteBitsToFile(filename_out, ciphertext_bits);
+
+		return true;
+	}
+	catch (std::runtime_error&)
+	{
+		return false;
+	}
+}
+
+bool GhettoCipherWrapper::DecryptFile(const std::string& filename_in, const std::string& filename_out, const std::string& password)
+{
+	try
+	{
+		// Read the file to bits
+		const Flexblock ciphertext_bits = ReadFileToBits(filename_in);
+
+		// Instanciate our cipher and supply a key
+		GhettoCipher cipher(password);
+
+		// Decrypt the ciphertext bits
+		const Flexblock cleartext_bits = cipher.Decipher(ciphertext_bits);
+
+		// Write our cleartext bits to file
+		WriteBitsToFile(filename_out, cleartext_bits);
+
+		return true;
+	}
+	catch (std::runtime_error&)
+	{
+		return false;
+	}
+}

GhettoCipherWrapper.h

@@ -0,0 +1,30 @@
+#pragma once
+#include <string>
+
+/** This class is a wrapper to make working with the GhettoCipher super easy with a python-like syntax
+*/
+class GhettoCipherWrapper
+{
+public:
+	//! Will encrypt a string and return it hexadecimally encoded.
+	static std::string EncryptString(const std::string& cleartext, const std::string& password);
+
+	//! Will decrypt a hexadecimally encoded string.
+	static std::string DecryptString(const std::string& ciphertext, const std::string& password);
+
+	//! Will encrypt a file.
+	//! Returns false if anything goes wrong (like, file-access).
+	//! @filename_in The file to be read.
+	//! @filename_out The file the encrypted version should be saved in.
+	static bool EncryptFile(const std::string& filename_in, const std::string& filename_out, const std::string& password);
+
+	//! Will decrypt a file.
+	//! Returns false if anything goes wrong (like, file-access).
+	//! @filename_in The file to be read.
+	//! @filename_out The file the decrypted version should be saved in.
+	static bool DecryptFile(const std::string& filename_in, const std::string& filename_out, const std::string& password);
+
+private:
+	// No instanciation! >:(
+	GhettoCipherWrapper();
+};

main.cpp

@@ -1,38 +1,44 @@
 #pragma once
 #include <iostream>
 #include "Util.h"
-#include "GhettoCipher.h"
+#include "GhettoCipherWrapper.h"
+
+void ExampleString()
+{
+	std::cout << "Example on how to encrypt & decrypt a string:" << std::endl;
+
+	// Get some string
+	const std::string input = "I am a super secret message!";
+	std::cout << input << std::endl;
+
+	// Encrypt
+	const std::string encrypted = GhettoCipherWrapper::EncryptString(input, "password1");
+	std::cout << encrypted << std::endl;
+
+	// Decrypt
+	const std::string decrypted = GhettoCipherWrapper::DecryptString(encrypted, "password1");
+	std::cout << decrypted << std::endl;
+
+	return;
+}
+
+void ExampleFiles()
+{
+	std::cout << "Example on how to encrypt & decrypt any file:" << std::endl;
+
+	// Encrypt
+	GhettoCipherWrapper::EncryptFile("main.cpp", "main.cpp.crypt", "password1");
+
+	// Decrypt
+	GhettoCipherWrapper::DecryptFile("main.cpp.crypt", "main.cpp.clear", "password1");
+
+	return;
+}
 
 int main()
 {
-	// Load file to be encrypted
+	ExampleString();
-	const Flexblock file = ReadFileToBits("images.jpg");
+	ExampleFiles();
-	std::cout << "Finished reading..." << std::endl;
-
-
-	// Prepare cipher
-	GhettoCipher feistel("Password yo");
-
-
-	// Encrypt
-	const Flexblock ciphertext = feistel.Encipher(file, true);
-	//const std::string cipherHex = BitsToHexstring(ciphertext);
-	std::cout << "Finished encrypting..." << std::endl;
-
-	// Save encrypted file
-	WriteBitsToFile("encrypted.jpg", ciphertext);
-	std::cout << "Finished writing..." << std::endl;
-
-
-	// Decrypt
-	//const Flexblock cleartextBits = feistel.Decipher(HexstringToBits(cipherHex));
-	const Flexblock cleartextBits = feistel.Decipher(ciphertext, true);
-	std::cout << "Finished decrypting..." << std::endl;
-
-	
-	// Save decrypted file
-	WriteBitsToFile("decrypted.jpg", cleartextBits);
-	std::cout << "Finished writing..." << std::endl;
 
 	return 0;
 }