Add attestation certificate parsing and validate for IC vts.
- Added attestation certificate parsing support.
- Added various certificate conversion support.
- Added certification verification support.
- Added tests for the attestation certificate verification.
- Updated the old tests to use the new attestation validation
implementation.
- Updated GenerateReaderCertificate to use pointer reader private key.
Bug: 154909726
Test: VtsHalIdentityTargetTest
Test: atest android.security.identity.cts
Change-Id: Ibe770e6eaf0b0018d60876926d824204e4eaf732
diff --git a/identity/aidl/vts/VtsAttestationParserSupport.h b/identity/aidl/vts/VtsAttestationParserSupport.h
new file mode 100644
index 0000000..7c7e1b6
--- /dev/null
+++ b/identity/aidl/vts/VtsAttestationParserSupport.h
@@ -0,0 +1,122 @@
+
+/*
+ * Copyright 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VTS_ATTESTATION_PARSER_SUPPORT_H
+#define VTS_ATTESTATION_PARSER_SUPPORT_H
+
+//#include <aidl/Gtest.h>
+#include <android/hardware/identity/IIdentityCredentialStore.h>
+#include <android/hardware/identity/support/IdentityCredentialSupport.h>
+#include <android/hardware/keymaster/4.0/types.h>
+#include <hardware/keymaster_defs.h>
+#include <keymaster/android_keymaster_utils.h>
+#include <keymaster/authorization_set.h>
+#include <keymaster/contexts/pure_soft_keymaster_context.h>
+#include <keymaster/contexts/soft_attestation_cert.h>
+#include <keymaster/keymaster_tags.h>
+#include <keymaster/km_openssl/attestation_utils.h>
+#include <vector>
+
+namespace android::hardware::identity::test_utils {
+
+using ::std::optional;
+using ::std::string;
+using ::std::vector;
+
+using ::keymaster::AuthorizationSet;
+using ::keymaster::TypedTag;
+
+class AttestationCertificateParser {
+ public:
+ AttestationCertificateParser(const vector<Certificate>& certChain)
+ : origCertChain_(certChain) {}
+
+ bool parse();
+
+ uint32_t getKeymasterVersion();
+ uint32_t getAttestationVersion();
+ vector<uint8_t> getAttestationChallenge();
+ keymaster_security_level_t getKeymasterSecurityLevel();
+ keymaster_security_level_t getAttestationSecurityLevel();
+
+ template <keymaster_tag_t Tag>
+ bool getSwEnforcedBool(TypedTag<KM_BOOL, Tag> tag) {
+ if (att_sw_enforced_.GetTagValue(tag)) {
+ return true;
+ }
+
+ return false;
+ }
+
+ template <keymaster_tag_t Tag>
+ bool getHwEnforcedBool(TypedTag<KM_BOOL, Tag> tag) {
+ if (att_hw_enforced_.GetTagValue(tag)) {
+ return true;
+ }
+
+ return false;
+ }
+
+ template <keymaster_tag_t Tag>
+ optional<vector<uint8_t>> getHwEnforcedBlob(TypedTag<KM_BYTES, Tag> tag) {
+ keymaster_blob_t blob;
+ if (att_hw_enforced_.GetTagValue(tag, &blob)) {
+ return {};
+ }
+
+ vector<uint8_t> ret(blob.data, blob.data + blob.data_length);
+ return ret;
+ }
+
+ template <keymaster_tag_t Tag>
+ optional<vector<uint8_t>> getSwEnforcedBlob(TypedTag<KM_BYTES, Tag> tag) {
+ keymaster_blob_t blob;
+ if (!att_sw_enforced_.GetTagValue(tag, &blob)) {
+ return {};
+ }
+
+ vector<uint8_t> ret(blob.data, blob.data + blob.data_length);
+ return ret;
+ }
+
+ private:
+ // Helper functions.
+ bool verifyChain(const keymaster_cert_chain_t& chain);
+
+ ASN1_OCTET_STRING* getAttestationRecord(X509* certificate);
+
+ X509* parseCertBlob(const keymaster_blob_t& blob);
+
+ bool verifyAttestationRecord(const keymaster_blob_t& attestation_cert);
+
+ optional<keymaster_cert_chain_t> certificateChainToKeymasterChain(
+ const vector<Certificate>& certificates);
+
+ // Private variables.
+ vector<Certificate> origCertChain_;
+ AuthorizationSet att_sw_enforced_;
+ AuthorizationSet att_hw_enforced_;
+ uint32_t att_attestation_version_;
+ uint32_t att_keymaster_version_;
+ keymaster_security_level_t att_attestation_security_level_;
+ keymaster_security_level_t att_keymaster_security_level_;
+ vector<uint8_t> att_challenge_;
+};
+
+} // namespace android::hardware::identity::test_utils
+
+#endif // VTS_ATTESTATION_PARSER_SUPPORT_H