revert: restore defaults in cmake
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 54c8f9f..215201f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,8 +28,8 @@
 option(COSE_C_RUN_CLANG_TIDY "Use Clang-Tidy for static analysis" OFF)
 option(COSE_C_BUILD_TESTS "build tests" ON)
 option(COSE_C_BUILD_DUMPER "build dumper" ON)
-option(BUILD_SHARED_LIBS "Build Shared Libraries" OFF)
-option(COSE_C_USE_MBEDTLS "Use MBedTLS for the Crypto Package" ON)
+option(BUILD_SHARED_LIBS "Build Shared Libraries" ON)
+option(COSE_C_USE_MBEDTLS "Use MBedTLS for the Crypto Package" OFF)
 option(COSE_C_USE_FIND_PACKAGE "Use cmake find_package instead of using cmake project_add" OFF)
 option(COSE_C_INCLUDE_ENCRYPT "Include COSE_ENCRYPT" ON)
 option(COSE_C_INCLUDE_ENCRYPT0 "Include COSE_ENCRYPT0" ON)