Implement device unique attestation vts tests for keymint.
Test: atest VtsAidlKeyMintTargetTest
Change-Id: If271c915d33cece035ab67b9149ae4ba762648b4
diff --git a/security/keymint/aidl/vts/functional/Android.bp b/security/keymint/aidl/vts/functional/Android.bp
index 6c7309e..a0f8c28 100644
--- a/security/keymint/aidl/vts/functional/Android.bp
+++ b/security/keymint/aidl/vts/functional/Android.bp
@@ -31,6 +31,7 @@
],
srcs: [
"AttestKeyTest.cpp",
+ "DeviceUniqueAttestationTest.cpp",
"KeyMintTest.cpp",
],
shared_libs: [
diff --git a/security/keymint/aidl/vts/functional/DeviceUniqueAttestationTest.cpp b/security/keymint/aidl/vts/functional/DeviceUniqueAttestationTest.cpp
new file mode 100644
index 0000000..7009c6e
--- /dev/null
+++ b/security/keymint/aidl/vts/functional/DeviceUniqueAttestationTest.cpp
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#define LOG_TAG "keymint_1_attest_key_test"
+
+#include <cutils/log.h>
+#include <cutils/properties.h>
+#include <keymint_support/key_param_output.h>
+#include <keymint_support/openssl_utils.h>
+
+#include "KeyMintAidlTestBase.h"
+
+namespace aidl::android::hardware::security::keymint::test {
+
+class DeviceUniqueAttestationTest : public KeyMintAidlTestBase {
+ protected:
+ void CheckUniqueAttestationResults(const vector<uint8_t>& key_blob,
+ const vector<KeyCharacteristics>& key_characteristics,
+ const AuthorizationSet& hw_enforced, int key_size) {
+ ASSERT_GT(cert_chain_.size(), 0);
+
+ if (KeyMintAidlTestBase::dump_Attestations) {
+ std::cout << bin2hex(cert_chain_[0].encodedCertificate) << std::endl;
+ }
+
+ ASSERT_GT(key_blob.size(), 0U);
+
+ AuthorizationSet crypto_params = SecLevelAuthorizations(key_characteristics);
+
+ EXPECT_TRUE(crypto_params.Contains(TAG_KEY_SIZE, key_size)) << "Key size missing";
+
+ EXPECT_TRUE(ChainSignaturesAreValid(cert_chain_));
+ ASSERT_GT(cert_chain_.size(), 0);
+
+ AuthorizationSet sw_enforced = SwEnforcedAuthorizations(key_characteristics);
+ EXPECT_TRUE(verify_attestation_record("challenge", "foo", sw_enforced, hw_enforced,
+ SecLevel(), cert_chain_[0].encodedCertificate));
+ }
+};
+
+/*
+ * DeviceUniqueAttestationTest.RsaNonStrongBoxUnimplemented
+ *
+ * Verifies that non strongbox implementations do not implement Rsa device unique
+ * attestation.
+ */
+TEST_P(DeviceUniqueAttestationTest, RsaNonStrongBoxUnimplemented) {
+ if (SecLevel() == SecurityLevel::STRONGBOX) return;
+
+ vector<uint8_t> key_blob;
+ vector<KeyCharacteristics> key_characteristics;
+
+ // Check RSA implementation
+ auto result = GenerateKey(AuthorizationSetBuilder()
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .RsaSigningKey(2048, 65537)
+ .Digest(Digest::SHA_2_256)
+ .Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
+ .Authorization(TAG_INCLUDE_UNIQUE_ID)
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .AttestationChallenge("challenge")
+ .AttestationApplicationId("foo")
+ .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION),
+ &key_blob, &key_characteristics);
+
+ ASSERT_TRUE(result == ErrorCode::UNSUPPORTED_TAG);
+}
+
+/*
+ * DeviceUniqueAttestationTest.EcdsaNonStrongBoxUnimplemented
+ *
+ * Verifies that non strongbox implementations do not implement Ecdsa device unique
+ * attestation.
+ */
+TEST_P(DeviceUniqueAttestationTest, EcdsaNonStrongBoxUnimplemented) {
+ if (SecLevel() == SecurityLevel::STRONGBOX) return;
+
+ vector<uint8_t> key_blob;
+ vector<KeyCharacteristics> key_characteristics;
+
+ // Check Ecdsa implementation
+ auto result = GenerateKey(AuthorizationSetBuilder()
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .EcdsaSigningKey(EcCurve::P_256)
+ .Digest(Digest::SHA_2_256)
+ .Authorization(TAG_INCLUDE_UNIQUE_ID)
+ .AttestationChallenge("challenge")
+ .AttestationApplicationId("foo")
+ .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION),
+ &key_blob, &key_characteristics);
+
+ ASSERT_TRUE(result == ErrorCode::UNSUPPORTED_TAG);
+}
+
+/*
+ * DeviceUniqueAttestationTest.RsaDeviceUniqueAttestation
+ *
+ * Verifies that strongbox implementations of Rsa implements device unique
+ * attestation correctly, if implemented.
+ */
+TEST_P(DeviceUniqueAttestationTest, RsaDeviceUniqueAttestation) {
+ if (SecLevel() != SecurityLevel::STRONGBOX) return;
+
+ vector<uint8_t> key_blob;
+ vector<KeyCharacteristics> key_characteristics;
+ int key_size = 2048;
+
+ auto result = GenerateKey(AuthorizationSetBuilder()
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .RsaSigningKey(key_size, 65537)
+ .Digest(Digest::SHA_2_256)
+ .Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
+ .Authorization(TAG_INCLUDE_UNIQUE_ID)
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .AttestationChallenge("challenge")
+ .AttestationApplicationId("foo")
+ .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION),
+ &key_blob, &key_characteristics);
+
+ // It is optional for Strong box to support DeviceUniqueAttestation.
+ if (result == ErrorCode::CANNOT_ATTEST_IDS) return;
+
+ ASSERT_EQ(ErrorCode::OK, result);
+
+ AuthorizationSet hw_enforced = AuthorizationSetBuilder()
+ .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION)
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .RsaSigningKey(2048, 65537)
+ .Digest(Digest::SHA_2_256)
+ .Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
+ .Authorization(TAG_ORIGIN, KeyOrigin::GENERATED)
+ .Authorization(TAG_OS_VERSION, os_version())
+ .Authorization(TAG_OS_PATCHLEVEL, os_patch_level());
+
+ CheckUniqueAttestationResults(key_blob, key_characteristics, hw_enforced, key_size);
+}
+
+/*
+ * DeviceUniqueAttestationTest.EcdsaDeviceUniqueAttestation
+ *
+ * Verifies that strongbox implementations of Rsa implements device unique
+ * attestation correctly, if implemented.
+ */
+TEST_P(DeviceUniqueAttestationTest, EcdsaDeviceUniqueAttestation) {
+ if (SecLevel() != SecurityLevel::STRONGBOX) return;
+
+ vector<uint8_t> key_blob;
+ vector<KeyCharacteristics> key_characteristics;
+ int key_size = 256;
+
+ auto result = GenerateKey(AuthorizationSetBuilder()
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .EcdsaSigningKey(256)
+ .Digest(Digest::SHA_2_256)
+ .Authorization(TAG_INCLUDE_UNIQUE_ID)
+ .AttestationChallenge("challenge")
+ .AttestationApplicationId("foo")
+ .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION),
+ &key_blob, &key_characteristics);
+
+ // It is optional for Strong box to support DeviceUniqueAttestation.
+ if (result == ErrorCode::CANNOT_ATTEST_IDS) return;
+ ASSERT_EQ(ErrorCode::OK, result);
+
+ AuthorizationSet hw_enforced = AuthorizationSetBuilder()
+ .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION)
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .EcdsaSigningKey(EcCurve::P_256)
+ .Digest(Digest::SHA_2_256)
+ .Authorization(TAG_EC_CURVE, EcCurve::P_256)
+ .Authorization(TAG_ORIGIN, KeyOrigin::GENERATED)
+ .Authorization(TAG_OS_VERSION, os_version())
+ .Authorization(TAG_OS_PATCHLEVEL, os_patch_level());
+
+ CheckUniqueAttestationResults(key_blob, key_characteristics, hw_enforced, key_size);
+}
+
+INSTANTIATE_KEYMINT_AIDL_TEST(DeviceUniqueAttestationTest);
+
+} // namespace aidl::android::hardware::security::keymint::test