Enable remote attestation by librats in SGX mode (#1445)

Add library librats, update SGX build scripts, add sample and update document.
2022-09-06 14:29:58 +08:00
parent a9cb9206d6
commit 729c4aeeaa
15 changed files with 404 additions and 18 deletions
--- a/product-mini/platforms/linux-sgx/CMakeLists.txt
+++ b/product-mini/platforms/linux-sgx/CMakeLists.txt
@ -59,6 +59,11 @@ if (NOT DEFINED WAMR_BUILD_LIBC_WASI)
  set (WAMR_BUILD_LIBC_WASI 1)
 endif ()

+if (NOT DEFINED WAMR_BUILD_LIB_RATS)
+  # Disable lib rats support by default
+  set (WAMR_BUILD_LIB_RATS 0)
+endif()
+
 if (NOT DEFINED WAMR_BUILD_FAST_INTERP)
  # Enable fast interpreter
  set (WAMR_BUILD_FAST_INTERP 1)
@ -84,7 +89,7 @@ if (COLLECT_CODE_COVERAGE EQUAL 1)
 endif ()

 set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gc-sections")
-set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -ffunction-sections -fdata-sections \
+set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu11 -ffunction-sections -fdata-sections \
                                     -Wall -Wno-unused-parameter -Wno-pedantic \
                                     -nostdinc -fvisibility=hidden -fpie" )

@ -100,3 +105,15 @@ add_custom_command (
             COMMAND ${CMAKE_AR} rc libvmlib_untrusted.a untrusted/*.o)

 add_custom_target (vmlib_untrusted ALL DEPENDS libvmlib_untrusted.a)
+
+if (WAMR_BUILD_LIB_RATS EQUAL 1)
+    execute_process(
+        COMMAND bash -c "sed -i -E 's/^#define LIB_RATS 0 /#define LIB_RATS 1/g' ${CMAKE_CURRENT_SOURCE_DIR}/enclave-sample/Enclave/Enclave.edl"
+        OUTPUT_VARIABLE cmdOutput
+    )
+else()
+    execute_process(
+        COMMAND bash -c "sed -i -E 's/^#define LIB_RATS 1/#define LIB_RATS 0/g' ${CMAKE_CURRENT_SOURCE_DIR}/enclave-sample/Enclave/Enclave.edl"
+        OUTPUT_VARIABLE cmdOutput
+    )
+endif()
--- a/product-mini/platforms/linux-sgx/enclave-sample/Enclave/Enclave.edl
+++ b/product-mini/platforms/linux-sgx/enclave-sample/Enclave/Enclave.edl
@ -3,10 +3,15 @@
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 */

+#define LIB_RATS 0
+
 enclave {
    from "sgx_tstdc.edl" import *;
    from "sgx_pthread.edl" import *;
    from "sgx_wamr.edl" import *;
+#if LIB_RATS != 0
+    from "rats.edl" import *;
+#endif

    trusted {
        /* define ECALLs here. */
--- a/product-mini/platforms/linux-sgx/enclave-sample/Makefile
+++ b/product-mini/platforms/linux-sgx/enclave-sample/Makefile
@ -9,6 +9,13 @@ SGX_ARCH ?= x64
 SGX_DEBUG ?= 0
 SPEC_TEST ?= 0

+VMLIB_BUILD_DIR ?= $(CURDIR)/../build
+LIB_RATS_SRC ?= $(VMLIB_BUILD_DIR)/_deps/librats-build
+LIB_RATS := $(shell if [ -d $(LIB_RATS_SRC) ]; then echo 1; else echo 0; fi)
+
+LIB_RATS_INSTALL_DIR := $(VMLIB_BUILD_DIR)/librats/lib/librats
+LIB_RATS_INCLUDE_DIR := $(VMLIB_BUILD_DIR)/librats/include
+
 ifeq ($(shell getconf LONG_BIT), 32)
 	SGX_ARCH := x86
 else ifeq ($(findstring -m32, $(CXXFLAGS)), -m32)
@ -49,6 +56,9 @@ endif

 App_Cpp_Files := App/App.cpp
 App_Include_Paths := -IApp -I$(SGX_SDK)/include
+ifeq ($(LIB_RATS), 1)
+	App_Include_Paths += -I$(LIB_RATS_INCLUDE_DIR)
+endif

 App_C_Flags := $(SGX_COMMON_CFLAGS) -fPIC -Wno-attributes $(App_Include_Paths)

@ -79,6 +89,10 @@ else
 	App_Link_Flags += -lsgx_uae_service
 endif

+ifeq ($(LIB_RATS), 1)
+	App_Link_Flags += -L$(LIB_RATS_INSTALL_DIR) -lrats_u -lsgx_dcap_ql -lsgx_dcap_quoteverify -lsgx_ukey_exchange
+endif
+
 App_Cpp_Objects := $(App_Cpp_Files:.cpp=.o)

 App_Name := iwasm
@ -105,21 +119,40 @@ Enclave_Include_Paths := -IEnclave -I$(WAMR_ROOT)/core/iwasm/include \
                         -I$(SGX_SDK)/include/tlibc \
                         -I$(SGX_SDK)/include/stlport

+ifeq ($(LIB_RATS), 1)
+	Enclave_Include_Paths += -I$(LIB_RATS_INCLUDE_DIR)
+endif
+
 Enclave_C_Flags := $(SGX_COMMON_CFLAGS) -nostdinc -fvisibility=hidden -fpie -fstack-protector $(Enclave_Include_Paths)
 ifeq ($(SPEC_TEST), 1)
 	Enclave_C_Flags += -DWASM_ENABLE_SPEC_TEST=1
 else
 	Enclave_C_Flags += -DWASM_ENABLE_SPEC_TEST=0
 endif
-Enclave_Cpp_Flags := $(Enclave_C_Flags) -std=c++03 -nostdinc++
-Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) \
-	-Wl,--whole-archive -l$(Trts_Library_Name) -Wl,--no-whole-archive \
-    libvmlib.a \
-	-Wl,--start-group -lsgx_tstdc -lsgx_tcxx -lsgx_pthread -l$(Crypto_Library_Name) -l$(Service_Library_Name) -Wl,--end-group \
+
+ifeq ($(LIB_RATS), 1)
+	Rats_Lib_Link_Dirs := -L$(LIB_RATS_INSTALL_DIR) -L$(LIB_RATS_INSTALL_DIR)/attesters -L$(LIB_RATS_INSTALL_DIR)/verifiers
+	Rats_Lib_Link_libs := -lattester_nullattester -lattester_sgx_ecdsa -lattester_sgx_la \
+						-lverifier_nullverifier -lverifier_sgx_ecdsa -lverifier_sgx_la -lverifier_sgx_ecdsa_qve \
+						-lrats_lib
+endif
+
+Enclave_Cpp_Flags := $(Enclave_C_Flags) -std=c++11 -nostdinc++
+Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) ${Rats_Lib_Link_Dirs} \
+	-Wl,--whole-archive -l$(Trts_Library_Name) ${Rats_Lib_Link_libs} -Wl,--no-whole-archive \
+	-Wl,--start-group -lsgx_tstdc -lsgx_tcxx -lsgx_pthread -lsgx_tkey_exchange -l$(Crypto_Library_Name) -l$(Service_Library_Name) -lsgx_dcap_tvl -Wl,--end-group \
 	-Wl,-Bstatic -Wl,-Bsymbolic -Wl,--no-undefined \
 	-Wl,-pie,-eenclave_entry -Wl,--export-dynamic  \
 	-Wl,--defsym,__ImageBase=0

+Enclave_Edl_Search_Path     =   --search-path ../Enclave \
+								--search-path $(SGX_SDK)/include \
+								--search-path $(WAMR_ROOT)/core/shared/platform/linux-sgx
+ifeq ($(LIB_RATS), 1)
+	Enclave_Edl_Search_Path	+=	--search-path $(LIB_RATS_INCLUDE_DIR)/librats/edl
+endif
+
+
 Enclave_Cpp_Objects := $(Enclave_Cpp_Files:.cpp=.o)

 Enclave_Name := enclave.so
@ -156,12 +189,14 @@ ifneq ($(Build_Mode), HW_RELEASE)
 endif

 ######## App Objects ########
+librats:
+ifeq ($(LIB_RATS), 1)
+	@cd $(LIB_RATS_SRC) && make install
+	@echo "librats build success"
+endif

-App/Enclave_u.c: $(SGX_EDGER8R) Enclave/Enclave.edl
-	@cd App && $(SGX_EDGER8R) --untrusted ../Enclave/Enclave.edl \
-		--search-path ../Enclave \
-		--search-path $(SGX_SDK)/include \
-		--search-path $(WAMR_ROOT)/core/shared/platform/linux-sgx
+App/Enclave_u.c: $(SGX_EDGER8R) Enclave/Enclave.edl librats
+	@cd App && $(SGX_EDGER8R) --untrusted ../Enclave/Enclave.edl $(Enclave_Edl_Search_Path)
 	@echo "GEN  =>  $@"

 App/Enclave_u.o: App/Enclave_u.c
@ -172,7 +207,7 @@ App/%.o: App/%.cpp
 	@$(CXX) $(App_Cpp_Flags) -c $< -o $@
 	@echo "CXX  <=  $<"

-libvmlib_untrusted.a: ../build/libvmlib_untrusted.a
+libvmlib_untrusted.a: $(VMLIB_BUILD_DIR)/libvmlib_untrusted.a
 	@cp $< $@
 	@echo "CP $@  <=  $<"

@ -183,11 +218,8 @@ $(App_Name): App/Enclave_u.o $(App_Cpp_Objects) libvmlib_untrusted.a

 ######## Enclave Objects ########

-Enclave/Enclave_t.c: $(SGX_EDGER8R) Enclave/Enclave.edl
-	@cd Enclave && $(SGX_EDGER8R) --trusted ../Enclave/Enclave.edl \
-		--search-path ../Enclave \
-		--search-path $(SGX_SDK)/include \
-		--search-path $(WAMR_ROOT)/core/shared/platform/linux-sgx
+Enclave/Enclave_t.c: $(SGX_EDGER8R) Enclave/Enclave.edl librats
+	@cd Enclave && $(SGX_EDGER8R) --trusted ../Enclave/Enclave.edl $(Enclave_Edl_Search_Path)
 	@echo "GEN  =>  $@"

 Enclave/Enclave_t.o: Enclave/Enclave_t.c
@ -198,7 +230,7 @@ Enclave/%.o: Enclave/%.cpp
 	@$(CXX) $(Enclave_Cpp_Flags) -c $< -o $@
 	@echo "CXX  <=  $<"

-libvmlib.a: ../build/libvmlib.a
+libvmlib.a: $(VMLIB_BUILD_DIR)/libvmlib.a
 	@cp $< $@
 	@echo "CP $@  <=  $<"