Reorganized and cleaned up the solution.

Include/Crypto/RealmCrypt.hpp

@@ -0,0 +1,43 @@
+#pragma once
+
+#include <string>
+#include <vector>
+#include <span>
+
+#include "rijndael.hpp"
+
+// This class is based on the games Encryptor class,
+// and is a wrapper around the rijndael ECB implementation.
+//
+// Normally CoN would generate a random symmetric key for each user,
+// but for the sake of simplicity we will just use the games default key,
+// since we have nothing to hide.
+
+class RealmCrypt {
+private:
+	// Byte array of dlfk qs';r+t iqe4t9ueerjKDJ wdaj
+	const static inline std::vector< uint8_t > default_sym_key =
+	{
+		0x64, 0x6c,	0x66, 0x6b, 0x20, 0x71, 0x73, 0x27,
+		0x3b, 0x72, 0x2b, 0x74, 0x20, 0x69, 0x71, 0x65,
+		0x34, 0x74, 0x39, 0x75, 0x65, 0x65, 0x72, 0x6a,
+		0x4b, 0x44, 0x4a, 0x20, 0x77, 0x64, 0x61, 0x6a
+	};
+
+public:
+	RealmCrypt();
+
+	// Generate a new symmetric key for the user.
+	static std::vector< uint8_t > generateSymmetricKey( void );
+	static std::vector< uint8_t > getSymmetricKey( void );
+
+	// Encrypt and decrypt strings.
+	static std::string encryptString( std::string &input );
+	static std::string decryptString( std::string &input );
+	static std::vector<uint8_t> encryptString( const std::wstring &input );
+	static std::wstring decryptString( std::vector<uint8_t> &input );
+
+	// Encrypt and decrypt byte arrays.
+	static std::vector< uint8_t > encryptSymmetric( std::span< const uint8_t > input );
+	static std::vector< uint8_t > decryptSymmetric( std::span< const uint8_t > input );
+};