KeyMint VTS: improve attestation tests
Check that the various ATTESTATION_ID_* tags are included if they
have the correct value, and that keygen fails if they have an invalid
value.
Also update attestation tags to include vendor/boot patchlevel if
they're available. (They always should be, but fixing that is a
separate task.)
Bug: 190757200
Test: VtsAidlKeyMintTargetTest
Merged-In: Ibaed7364c6d08c0982e2a9fb6cb864ae42cf39fe
Change-Id: Ibaed7364c6d08c0982e2a9fb6cb864ae42cf39fe
diff --git a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
index ae2becd..a312723 100644
--- a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
+++ b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
@@ -556,7 +556,7 @@
.EcdsaSigningKey(curve)
.AttestKey()
.SetDefaultValidity(),
- {} /* attestation siging key */, &attest_key.keyBlob,
+ {} /* attestation signing key */, &attest_key.keyBlob,
&attest_key_characteristics, &attest_key_cert_chain));
ASSERT_GT(attest_key_cert_chain.size(), 0);
@@ -640,7 +640,7 @@
ErrorCode::OK,
GenerateKey(
AuthorizationSetBuilder().EcdsaSigningKey(EcCurve::P_256).SetDefaultValidity(),
- {} /* attestation siging key */, &non_attest_key.keyBlob,
+ {} /* attestation signing key */, &non_attest_key.keyBlob,
&non_attest_key_characteristics, &non_attest_key_cert_chain));
ASSERT_GT(non_attest_key_cert_chain.size(), 0);
@@ -662,6 +662,124 @@
&attested_key_cert_chain));
}
+TEST_P(AttestKeyTest, EcdsaAttestationID) {
+ // Create attestation key.
+ AttestationKey attest_key;
+ vector<KeyCharacteristics> attest_key_characteristics;
+ vector<Certificate> attest_key_cert_chain;
+ ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
+ .EcdsaSigningKey(EcCurve::P_256)
+ .AttestKey()
+ .SetDefaultValidity(),
+ {} /* attestation signing key */, &attest_key.keyBlob,
+ &attest_key_characteristics, &attest_key_cert_chain));
+ attest_key.issuerSubjectName = make_name_from_str("Android Keystore Key");
+ ASSERT_GT(attest_key_cert_chain.size(), 0);
+ EXPECT_EQ(attest_key_cert_chain.size(), 1);
+ EXPECT_TRUE(IsSelfSigned(attest_key_cert_chain));
+
+ // Collection of valid attestation ID tags.
+ auto attestation_id_tags = AuthorizationSetBuilder();
+ add_tag_from_prop(&attestation_id_tags, TAG_ATTESTATION_ID_BRAND, "ro.product.brand");
+ add_tag_from_prop(&attestation_id_tags, TAG_ATTESTATION_ID_DEVICE, "ro.product.device");
+ add_tag_from_prop(&attestation_id_tags, TAG_ATTESTATION_ID_PRODUCT, "ro.product.name");
+ add_tag_from_prop(&attestation_id_tags, TAG_ATTESTATION_ID_SERIAL, "ro.serial");
+ add_tag_from_prop(&attestation_id_tags, TAG_ATTESTATION_ID_MANUFACTURER,
+ "ro.product.manufacturer");
+ add_tag_from_prop(&attestation_id_tags, TAG_ATTESTATION_ID_MODEL, "ro.product.model");
+
+ for (const KeyParameter& tag : attestation_id_tags) {
+ SCOPED_TRACE(testing::Message() << "+tag-" << tag);
+ // Use attestation key to sign an ECDSA key, but include an attestation ID field.
+ AuthorizationSetBuilder builder = AuthorizationSetBuilder()
+ .EcdsaSigningKey(EcCurve::P_256)
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .AttestationChallenge("challenge")
+ .AttestationApplicationId("foo")
+ .SetDefaultValidity();
+ builder.push_back(tag);
+ vector<uint8_t> attested_key_blob;
+ vector<KeyCharacteristics> attested_key_characteristics;
+ vector<Certificate> attested_key_cert_chain;
+ auto result = GenerateKey(builder, attest_key, &attested_key_blob,
+ &attested_key_characteristics, &attested_key_cert_chain);
+ if (result == ErrorCode::CANNOT_ATTEST_IDS) {
+ continue;
+ }
+
+ ASSERT_EQ(result, ErrorCode::OK);
+
+ CheckedDeleteKey(&attested_key_blob);
+
+ AuthorizationSet hw_enforced = HwEnforcedAuthorizations(attested_key_characteristics);
+ AuthorizationSet sw_enforced = SwEnforcedAuthorizations(attested_key_characteristics);
+
+ // The attested key characteristics will not contain APPLICATION_ID_* fields (their
+ // spec definitions all have "Must never appear in KeyCharacteristics"), but the
+ // attestation extension should contain them, so make sure the extra tag is added.
+ hw_enforced.push_back(tag);
+
+ EXPECT_TRUE(verify_attestation_record("challenge", "foo", sw_enforced, hw_enforced,
+ SecLevel(),
+ attested_key_cert_chain[0].encodedCertificate));
+ }
+ CheckedDeleteKey(&attest_key.keyBlob);
+}
+
+TEST_P(AttestKeyTest, EcdsaAttestationMismatchID) {
+ // Create attestation key.
+ AttestationKey attest_key;
+ vector<KeyCharacteristics> attest_key_characteristics;
+ vector<Certificate> attest_key_cert_chain;
+ ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
+ .EcdsaSigningKey(EcCurve::P_256)
+ .AttestKey()
+ .SetDefaultValidity(),
+ {} /* attestation signing key */, &attest_key.keyBlob,
+ &attest_key_characteristics, &attest_key_cert_chain));
+ attest_key.issuerSubjectName = make_name_from_str("Android Keystore Key");
+ ASSERT_GT(attest_key_cert_chain.size(), 0);
+ EXPECT_EQ(attest_key_cert_chain.size(), 1);
+ EXPECT_TRUE(IsSelfSigned(attest_key_cert_chain));
+
+ // Collection of invalid attestation ID tags.
+ auto attestation_id_tags =
+ AuthorizationSetBuilder()
+ .Authorization(TAG_ATTESTATION_ID_BRAND, "bogus-brand")
+ .Authorization(TAG_ATTESTATION_ID_DEVICE, "devious-device")
+ .Authorization(TAG_ATTESTATION_ID_PRODUCT, "punctured-product")
+ .Authorization(TAG_ATTESTATION_ID_SERIAL, "suspicious-serial")
+ .Authorization(TAG_ATTESTATION_ID_IMEI, "invalid-imei")
+ .Authorization(TAG_ATTESTATION_ID_MEID, "mismatching-meid")
+ .Authorization(TAG_ATTESTATION_ID_MANUFACTURER, "malformed-manufacturer")
+ .Authorization(TAG_ATTESTATION_ID_MODEL, "malicious-model");
+ vector<uint8_t> key_blob;
+ vector<KeyCharacteristics> key_characteristics;
+
+ for (const KeyParameter& invalid_tag : attestation_id_tags) {
+ SCOPED_TRACE(testing::Message() << "+tag-" << invalid_tag);
+
+ // Use attestation key to sign an ECDSA key, but include an invalid
+ // attestation ID field.
+ AuthorizationSetBuilder builder = AuthorizationSetBuilder()
+ .EcdsaSigningKey(EcCurve::P_256)
+ .Authorization(TAG_NO_AUTH_REQUIRED)
+ .AttestationChallenge("challenge")
+ .AttestationApplicationId("foo")
+ .SetDefaultValidity();
+ builder.push_back(invalid_tag);
+ vector<uint8_t> attested_key_blob;
+ vector<KeyCharacteristics> attested_key_characteristics;
+ vector<Certificate> attested_key_cert_chain;
+ auto result = GenerateKey(builder, attest_key, &attested_key_blob,
+ &attested_key_characteristics, &attested_key_cert_chain);
+
+ ASSERT_TRUE(result == ErrorCode::CANNOT_ATTEST_IDS || result == ErrorCode::INVALID_TAG)
+ << "result = " << result;
+ }
+ CheckedDeleteKey(&attest_key.keyBlob);
+}
+
INSTANTIATE_KEYMINT_AIDL_TEST(AttestKeyTest);
} // namespace aidl::android::hardware::security::keymint::test