diff --git a/CMakeLists.txt b/CMakeLists.txt
index c4bc764b..3787d697 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,4 +11,8 @@ option(ENABLE_TESTS "Enable Unit Tests" ON)
 
 # Set the output directories for binaries and libraries
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
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+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+
+find_package(OpenSSL REQUIRED)
+
+add_subdirectory(ref)
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diff --git a/ref/CMakeLists.txt b/ref/CMakeLists.txt
new file mode 100644
index 00000000..351bc774
--- /dev/null
+++ b/ref/CMakeLists.txt
@@ -0,0 +1,100 @@
+
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wextra")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wpedantic")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wmissing-prototypes")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wredundant-decls")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wshadow")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wpointer-arith")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O3")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fomit-frame-pointer")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -z noexecstack")
+set(NISTFLAGS "${NISTFLAGS}" -Wno-unused-result -O3 -fomit-frame-pointer)
+
+set(securitylevel 2 3 4)
+
+# build randombytes
+add_library(randombytes SHARED randombytes.c)
+
+# build nist rng
+add_library(rng SHARED nistkat/rng.c)
+target_link_libraries(rng OpenSSL::Crypto)
+
+set(SRCS
+  kem.c
+  indcpa.c
+  polyvec.c
+  poly.c
+  ntt.c
+  cbd.c
+  reduce.c
+  verify.c
+)
+
+# build fips202 shared library
+foreach(level IN LISTS securitylevel)
+  MATH(EXPR NBITS "256 * ${level}" OUTPUT_FORMAT DECIMAL)
+  set(name pqccrystals_fips202_${NBITS}_ref)
+
+  add_library(${name} SHARED fips202.c symmetric-shake.c)
+
+  target_compile_definitions(${name} PUBLIC KYBER_K=${level})
+endforeach()
+
+# build algorithm shared library
+foreach(level IN LISTS securitylevel)
+  MATH(EXPR NBITS "256 * ${level}" OUTPUT_FORMAT DECIMAL)
+  set(name pqccrystals_kyber${NBITS}_ref)
+
+  add_library(${name} SHARED ${SRCS})
+  target_compile_definitions(${name} PUBLIC KYBER_K=${level})
+endforeach()
+
+# build test_kyber
+foreach(level IN LISTS securitylevel)
+  MATH(EXPR NBITS "256 * ${level}" OUTPUT_FORMAT DECIMAL)
+
+  add_executable(test_kyber${NBITS} test/test_kyber.c)
+  target_link_libraries(test_kyber${NBITS}
+    pqccrystals_fips202_${NBITS}_ref
+    pqccrystals_kyber${NBITS}_ref
+    randombytes)
+endforeach()
+
+# build test_vector
+foreach(level IN LISTS securitylevel)
+  MATH(EXPR NBITS "256 * ${level}" OUTPUT_FORMAT DECIMAL)
+
+  add_executable(test_vectors${NBITS} test/test_vectors.c)
+  target_link_libraries(test_vectors${NBITS}
+    pqccrystals_fips202_${NBITS}_ref
+    pqccrystals_kyber${NBITS}_ref)
+endforeach()
+
+# build test_speed
+foreach(level IN LISTS securitylevel)
+  MATH(EXPR NBITS "256 * ${level}" OUTPUT_FORMAT DECIMAL)
+
+  add_executable(test_speed${NBITS}
+    test/cpucycles.c
+    test/speed_print.c
+    test/test_speed.c
+	)
+  target_link_libraries(test_speed${NBITS}
+    pqccrystals_fips202_${NBITS}_ref
+    pqccrystals_kyber${NBITS}_ref
+    randombytes)
+endforeach()
+
+# build nistkat
+foreach(level IN LISTS securitylevel)
+  MATH(EXPR NBITS "256 * ${level}" OUTPUT_FORMAT DECIMAL)
+
+  add_compile_options(${NISTFLAGS})
+  add_executable(PQCgenKAT_kem${NBITS} nistkat/PQCgenKAT_kem.c)
+  target_link_libraries(PQCgenKAT_kem${NBITS}
+    pqccrystals_fips202_${NBITS}_ref
+    pqccrystals_kyber${NBITS}_ref
+    rng)
+endforeach()
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