Crypt module (#549)

- Moved cryptography code out of Tactility project and into a kernel module.
- Converted C++ code to C style interface
- Hardened security

Tactility/Source/Tactility.cpp

@@ -23,6 +23,7 @@
 #include <Tactility/settings/TimePrivate.h>
 
 #include <tactility/concurrent/thread.h>
+#include <tactility/crypt_module.h>
 #include <tactility/drivers/grove.h>
 #include <tactility/drivers/uart_controller.h>
 #include <tactility/filesystem/file_system.h>
@@ -331,6 +332,9 @@ void run(const Configuration& config, Module* dtsModules[], DtsDevice dtsDevices
     // hal-device-module
     check(module_construct_add_start(&hal_device_module) == ERROR_NONE);
 
+    // crypt-module
+    check(module_construct_add_start(&crypt_module) == ERROR_NONE);
+
     // Assign early so starting services can use it
     config_instance = &config;