Check that KeyMint provides IRemotelyProvisionedComponent
Move helper utilities across into KeyMintAidlTestBase to allow re-use.
Test: VtsHalRemotelyProvisionedComponentTargetTest, VtsAidlKeyMintTargetTest
Change-Id: Ib9e55a7d72fd197016ae1a1f073dadedafa09c25
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
index ce6f67a..ec21944 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
@@ -22,8 +22,12 @@
#include <android-base/logging.h>
#include <android/binder_manager.h>
+#include <cppbor_parse.h>
+#include <cppcose/cppcose.h>
#include <cutils/properties.h>
+#include <gmock/gmock.h>
#include <openssl/mem.h>
+#include <remote_prov/remote_prov_utils.h>
#include <keymint_support/attestation_record.h>
#include <keymint_support/key_param_output.h>
@@ -32,6 +36,7 @@
namespace aidl::android::hardware::security::keymint {
+using namespace cppcose;
using namespace std::literals::chrono_literals;
using std::endl;
using std::optional;
@@ -39,6 +44,7 @@
using ::testing::AssertionFailure;
using ::testing::AssertionResult;
using ::testing::AssertionSuccess;
+using ::testing::MatchesRegex;
::std::ostream& operator<<(::std::ostream& os, const AuthorizationSet& set) {
if (set.size() == 0)
@@ -1118,6 +1124,121 @@
return retval;
}
+namespace {
+
+void check_cose_key(const vector<uint8_t>& data, bool testMode) {
+ auto [parsedPayload, __, payloadParseErr] = cppbor::parse(data);
+ ASSERT_TRUE(parsedPayload) << "Key parse failed: " << payloadParseErr;
+
+ // The following check assumes that canonical CBOR encoding is used for the COSE_Key.
+ if (testMode) {
+ EXPECT_THAT(cppbor::prettyPrint(parsedPayload.get()),
+ MatchesRegex("{\n"
+ " 1 : 2,\n" // kty: EC2
+ " 3 : -7,\n" // alg: ES256
+ " -1 : 1,\n" // EC id: P256
+ // The regex {(0x[0-9a-f]{2}, ){31}0x[0-9a-f]{2}} matches a
+ // sequence of 32 hexadecimal bytes, enclosed in braces and
+ // separated by commas. In this case, some Ed25519 public key.
+ " -2 : {(0x[0-9a-f]{2}, ){31}0x[0-9a-f]{2}},\n" // pub_x: data
+ " -3 : {(0x[0-9a-f]{2}, ){31}0x[0-9a-f]{2}},\n" // pub_y: data
+ " -70000 : null,\n" // test marker
+ "}"));
+ } else {
+ EXPECT_THAT(cppbor::prettyPrint(parsedPayload.get()),
+ MatchesRegex("{\n"
+ " 1 : 2,\n" // kty: EC2
+ " 3 : -7,\n" // alg: ES256
+ " -1 : 1,\n" // EC id: P256
+ // The regex {(0x[0-9a-f]{2}, ){31}0x[0-9a-f]{2}} matches a
+ // sequence of 32 hexadecimal bytes, enclosed in braces and
+ // separated by commas. In this case, some Ed25519 public key.
+ " -2 : {(0x[0-9a-f]{2}, ){31}0x[0-9a-f]{2}},\n" // pub_x: data
+ " -3 : {(0x[0-9a-f]{2}, ){31}0x[0-9a-f]{2}},\n" // pub_y: data
+ "}"));
+ }
+}
+
+} // namespace
+
+void check_maced_pubkey(const MacedPublicKey& macedPubKey, bool testMode,
+ vector<uint8_t>* payload_value) {
+ auto [coseMac0, _, mac0ParseErr] = cppbor::parse(macedPubKey.macedKey);
+ ASSERT_TRUE(coseMac0) << "COSE Mac0 parse failed " << mac0ParseErr;
+
+ ASSERT_NE(coseMac0->asArray(), nullptr);
+ ASSERT_EQ(coseMac0->asArray()->size(), kCoseMac0EntryCount);
+
+ auto protParms = coseMac0->asArray()->get(kCoseMac0ProtectedParams)->asBstr();
+ ASSERT_NE(protParms, nullptr);
+
+ // Header label:value of 'alg': HMAC-256
+ ASSERT_EQ(cppbor::prettyPrint(protParms->value()), "{\n 1 : 5,\n}");
+
+ auto unprotParms = coseMac0->asArray()->get(kCoseMac0UnprotectedParams)->asMap();
+ ASSERT_NE(unprotParms, nullptr);
+ ASSERT_EQ(unprotParms->size(), 0);
+
+ // The payload is a bstr holding an encoded COSE_Key
+ auto payload = coseMac0->asArray()->get(kCoseMac0Payload)->asBstr();
+ ASSERT_NE(payload, nullptr);
+ check_cose_key(payload->value(), testMode);
+
+ auto coseMac0Tag = coseMac0->asArray()->get(kCoseMac0Tag)->asBstr();
+ ASSERT_TRUE(coseMac0Tag);
+ auto extractedTag = coseMac0Tag->value();
+ EXPECT_EQ(extractedTag.size(), 32U);
+
+ // Compare with tag generated with kTestMacKey. Should only match in test mode
+ auto testTag = cppcose::generateCoseMac0Mac(remote_prov::kTestMacKey, {} /* external_aad */,
+ payload->value());
+ ASSERT_TRUE(testTag) << "Tag calculation failed: " << testTag.message();
+
+ if (testMode) {
+ EXPECT_EQ(*testTag, extractedTag);
+ } else {
+ EXPECT_NE(*testTag, extractedTag);
+ }
+ if (payload_value != nullptr) {
+ *payload_value = payload->value();
+ }
+}
+
+void p256_pub_key(const vector<uint8_t>& coseKeyData, EVP_PKEY_Ptr* signingKey) {
+ // Extract x and y affine coordinates from the encoded Cose_Key.
+ auto [parsedPayload, __, payloadParseErr] = cppbor::parse(coseKeyData);
+ ASSERT_TRUE(parsedPayload) << "Key parse failed: " << payloadParseErr;
+ auto coseKey = parsedPayload->asMap();
+ const std::unique_ptr<cppbor::Item>& xItem = coseKey->get(cppcose::CoseKey::PUBKEY_X);
+ ASSERT_NE(xItem->asBstr(), nullptr);
+ vector<uint8_t> x = xItem->asBstr()->value();
+ const std::unique_ptr<cppbor::Item>& yItem = coseKey->get(cppcose::CoseKey::PUBKEY_Y);
+ ASSERT_NE(yItem->asBstr(), nullptr);
+ vector<uint8_t> y = yItem->asBstr()->value();
+
+ // Concatenate: 0x04 (uncompressed form marker) | x | y
+ vector<uint8_t> pubKeyData{0x04};
+ pubKeyData.insert(pubKeyData.end(), x.begin(), x.end());
+ pubKeyData.insert(pubKeyData.end(), y.begin(), y.end());
+
+ EC_KEY_Ptr ecKey = EC_KEY_Ptr(EC_KEY_new());
+ ASSERT_NE(ecKey, nullptr);
+ EC_GROUP_Ptr group = EC_GROUP_Ptr(EC_GROUP_new_by_curve_name(NID_X9_62_prime256v1));
+ ASSERT_NE(group, nullptr);
+ ASSERT_EQ(EC_KEY_set_group(ecKey.get(), group.get()), 1);
+ EC_POINT_Ptr point = EC_POINT_Ptr(EC_POINT_new(group.get()));
+ ASSERT_NE(point, nullptr);
+ ASSERT_EQ(EC_POINT_oct2point(group.get(), point.get(), pubKeyData.data(), pubKeyData.size(),
+ nullptr),
+ 1);
+ ASSERT_EQ(EC_KEY_set_public_key(ecKey.get(), point.get()), 1);
+
+ EVP_PKEY_Ptr pubKey = EVP_PKEY_Ptr(EVP_PKEY_new());
+ ASSERT_NE(pubKey, nullptr);
+ EVP_PKEY_assign_EC_KEY(pubKey.get(), ecKey.release());
+ *signingKey = std::move(pubKey);
+}
+
} // namespace test
} // namespace aidl::android::hardware::security::keymint