Skip ATTEST_KEY using variant on waivered devices
Bug: 281452355
Bug: 289451966
Test: VtsAidlKeyMintTargetTest
Change-Id: Id448edae88569518deb2db4ab7bf50d16f33709a
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
index ee490a3..e0e3d98 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
@@ -1623,17 +1623,39 @@
return false;
}
-// Skip the test if all the following conditions hold:
-// 1. ATTEST_KEY feature is disabled
-// 2. STRONGBOX is enabled
-// 3. The device is running one of the chipsets that have received a waiver
-// allowing it to be launched with Android S (or later) with Keymaster 4.0
+// Indicate whether a test that involves use of the ATTEST_KEY feature should be
+// skipped.
+//
+// In general, every KeyMint implementation should support ATTEST_KEY;
+// however, there is a waiver for some specific devices that ship with a
+// combination of Keymaster/StrongBox and KeyMint/TEE. On these devices, the
+// ATTEST_KEY feature is disabled in the KeyMint/TEE implementation so that
+// the device has consistent ATTEST_KEY behavior (ie. UNIMPLEMENTED) across both
+// HAL implementations.
+//
+// This means that a test involving ATTEST_KEY test should be skipped if all of
+// the following conditions hold:
+// 1. The device is running one of the chipsets that have received a waiver
+// allowing it to be launched with Android S or T with Keymaster 4.0
// in StrongBox
-void KeyMintAidlTestBase::skipAttestKeyTest(void) const {
+// 2. The device has a STRONGBOX implementation present.
+// 3. ATTEST_KEY feature is advertised as disabled.
+//
+// Note that in this scenario, ATTEST_KEY tests should be skipped for both
+// the StrongBox implementation (which is Keymaster, therefore not tested here)
+// and for the TEE implementation (which is adjusted to return UNIMPLEMENTED
+// specifically for this waiver).
+bool KeyMintAidlTestBase::shouldSkipAttestKeyTest(void) const {
// Check the chipset first as that doesn't require a round-trip to Package Manager.
- if (is_chipset_allowed_km4_strongbox() && is_strongbox_enabled() &&
- is_attest_key_feature_disabled()) {
- GTEST_SKIP() << "Test is not applicable";
+ return (is_chipset_allowed_km4_strongbox() && is_strongbox_enabled() &&
+ is_attest_key_feature_disabled());
+}
+
+// Skip a test that involves use of the ATTEST_KEY feature in specific configurations
+// where ATTEST_KEY is not supported (for either StrongBox or TEE).
+void KeyMintAidlTestBase::skipAttestKeyTest(void) const {
+ if (shouldSkipAttestKeyTest()) {
+ GTEST_SKIP() << "Test using ATTEST_KEY is not applicable on waivered device";
}
}