Crypt module (#549)

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

Tests/crypt-module/CMakeLists.txt

@@ -0,0 +1,18 @@
+project(CryptModuleTests)
+
+enable_language(C CXX ASM)
+
+set(CMAKE_CXX_COMPILER g++)
+
+file(GLOB_RECURSE TEST_SOURCES ${PROJECT_SOURCE_DIR}/Source/*.cpp)
+add_executable(CryptModuleTests EXCLUDE_FROM_ALL ${TEST_SOURCES})
+
+target_include_directories(CryptModuleTests PRIVATE ${DOCTESTINC})
+
+add_test(NAME CryptModuleTests COMMAND CryptModuleTests)
+
+target_link_libraries(CryptModuleTests PUBLIC
+    crypt-module
+    TactilityKernel
+    freertos_kernel
+)