Merge "Changing DeviceInfo fields to be mandatory." am: 87a6fbc5cd am:... (1bbd78ef) · Commits · e / os / android_hardware_interfaces

security/keymint/aidl/android/hardware/security/keymint/DeviceInfo.aidl

+16 −20

Original line number	Diff line number	Diff line
		@@ -30,26 +30,22 @@ parcelable DeviceInfo {
		* DeviceInfo is a CBOR Map structure described by the following CDDL.
		*
		* DeviceInfo = {
		* ? "brand" : tstr,
		* ? "manufacturer" : tstr,
		* ? "product" : tstr,
		* ? "model" : tstr,
		* ? "board" : tstr,
		* ? "vb_state" : "green" / "yellow" / "orange", // Taken from the AVB values
		* ? "bootloader_state" : "locked" / "unlocked", // Taken from the AVB values
		* ? "vbmeta_digest": bstr, // Taken from the AVB values
		* ? "os_version" : tstr, // Same as android.os.Build.VERSION.release
		* ? "system_patch_level" : uint, // YYYYMMDD
		* ? "boot_patch_level" : uint, // YYYYMMDD
		* ? "vendor_patch_level" : uint, // YYYYMMDD
		* "version" : 1, // The CDDL schema version.
		* "security_level" : "tee" / "strongbox"
		* "att_id_state": "locked" / "open", // Attestation IDs State. If "locked", this
		* // indicates a device's attestable IDs are
		* // factory-locked and immutable. If "open",
		* // this indicates the device is still in a
		* // provisionable state and the attestable IDs
		* // are not yet frozen.
		* "brand" : tstr,
		* "manufacturer" : tstr,
		* "product" : tstr,
		* "model" : tstr,
		* "device" : tstr,
		* "vb_state" : "green" / "yellow" / "orange", // Taken from the AVB values
		* "bootloader_state" : "locked" / "unlocked", // Taken from the AVB values
		* "vbmeta_digest": bstr, // Taken from the AVB values
		* "os_version" : tstr, // Same as android.os.Build.VERSION.release
		* "system_patch_level" : uint, // YYYYMMDD
		* "boot_patch_level" : uint, // YYYYMMDD
		* "vendor_patch_level" : uint, // YYYYMMDD
		* "version" : 2, // The CDDL schema version.
		* "security_level" : "tee" / "strongbox",
		* "fused": 1 / 0, // 1 if secure boot is enforced for the processor that the IRPC
		* // implementation is contained in. 0 otherwise.
		* }
		*/
		byte[] deviceInfo;

security/keymint/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp

+88 −0

Original line number	Diff line number	Diff line
		@@ -57,6 +57,22 @@ using testing::MatchesRegex;
		using namespace remote_prov;
		using namespace keymaster;

		std::set<std::string> getAllowedVbStates() {
		return {"green", "yellow", "orange"};
		}

		std::set<std::string> getAllowedBootloaderStates() {
		return {"locked", "unlocked"};
		}

		std::set<std::string> getAllowedSecurityLevels() {
		return {"tee", "strongbox"};
		}

		std::set<std::string> getAllowedAttIdStates() {
		return {"locked", "open"};
		}

		bytevec string_to_bytevec(const char* s) {
		const uint8_t* p = reinterpret_cast<const uint8_t*>(s);
		return bytevec(p, p + strlen(s));
		@@ -406,6 +422,8 @@ class CertificateRequestTest : public VtsRemotelyProvisionedComponentTests {
		ASSERT_TRUE(deviceInfoMap) << "Failed to parse deviceInfo: " << deviceInfoErrMsg;
		ASSERT_TRUE(deviceInfoMap->asMap());

		checkDeviceInfo(deviceInfoMap->asMap());

		auto& signingKey = bccContents->back().pubKey;
		auto macKey = verifyAndParseCoseSign1(signedMac->asArray(), signingKey,
		cppbor::Array() // SignedMacAad
		@@ -432,6 +450,76 @@ class CertificateRequestTest : public VtsRemotelyProvisionedComponentTests {
		}
		}

		void checkType(const cppbor::Map* devInfo, uint8_t majorType, std::string entryName) {
		const auto& val = devInfo->get(entryName);
		ASSERT_TRUE(val) << entryName << " does not exist";
		ASSERT_EQ(val->type(), majorType) << entryName << " has the wrong type.";
		switch (majorType) {
		case cppbor::TSTR:
		ASSERT_GT(val->asTstr()->value().size(), 0);
		break;
		case cppbor::BSTR:
		ASSERT_GT(val->asBstr()->value().size(), 0);
		break;
		default:
		break;
		}
		}

		void checkDeviceInfo(const cppbor::Map* deviceInfo) {
		const auto& version = deviceInfo->get("version");
		ASSERT_TRUE(version);
		ASSERT_TRUE(version->asUint());
		RpcHardwareInfo info;
		provisionable_->getHardwareInfo(&info);
		ASSERT_EQ(version->asUint()->value(), info.versionNumber);
		std::set<std::string> allowList;
		switch (version->asUint()->value()) {
		// These fields became mandated in version 2.
		case 2:
		checkType(deviceInfo, cppbor::TSTR, "brand");
		checkType(deviceInfo, cppbor::TSTR, "manufacturer");
		checkType(deviceInfo, cppbor::TSTR, "product");
		checkType(deviceInfo, cppbor::TSTR, "model");
		checkType(deviceInfo, cppbor::TSTR, "device");
		// TODO: Refactor the KeyMint code that validates these fields and include it here.
		checkType(deviceInfo, cppbor::TSTR, "vb_state");
		allowList = getAllowedVbStates();
		ASSERT_NE(allowList.find(deviceInfo->get("vb_state")->asTstr()->value()),
		allowList.end());
		checkType(deviceInfo, cppbor::TSTR, "bootloader_state");
		allowList = getAllowedBootloaderStates();
		ASSERT_NE(allowList.find(deviceInfo->get("bootloader_state")->asTstr()->value()),
		allowList.end());
		checkType(deviceInfo, cppbor::BSTR, "vbmeta_digest");
		checkType(deviceInfo, cppbor::TSTR, "os_version");
		checkType(deviceInfo, cppbor::UINT, "system_patch_level");
		checkType(deviceInfo, cppbor::UINT, "boot_patch_level");
		checkType(deviceInfo, cppbor::UINT, "vendor_patch_level");
		checkType(deviceInfo, cppbor::UINT, "fused");
		ASSERT_LT(deviceInfo->get("fused")->asUint()->value(), 2); // Must be 0 or 1.
		checkType(deviceInfo, cppbor::TSTR, "security_level");
		allowList = getAllowedSecurityLevels();
		ASSERT_NE(allowList.find(deviceInfo->get("security_level")->asTstr()->value()),
		allowList.end());
		break;
		case 1:
		checkType(deviceInfo, cppbor::TSTR, "security_level");
		allowList = getAllowedSecurityLevels();
		ASSERT_NE(allowList.find(deviceInfo->get("security_level")->asTstr()->value()),
		allowList.end());
		if (version->asUint()->value() == 1) {
		checkType(deviceInfo, cppbor::TSTR, "att_id_state");
		allowList = getAllowedAttIdStates();
		ASSERT_NE(allowList.find(deviceInfo->get("att_id_state")->asTstr()->value()),
		allowList.end());
		}
		break;
		default:
		FAIL() << "Unrecognized version: " << version->asUint()->value();
		}
		}

		bytevec eekId_;
		size_t testEekLength_;
		EekChain testEekChain_;