diff --git a/security/keymint/aidl/android/hardware/security/keymint/KeyCreationResult.aidl b/security/keymint/aidl/android/hardware/security/keymint/KeyCreationResult.aidl
index 16bbc5c..a4cfb8b 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/KeyCreationResult.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/KeyCreationResult.aidl
@@ -78,15 +78,16 @@
      *     provided, otherwise ATTESTATION_APPLICATION_ID_MISSING will be returned.
      *
      * 3.  Asymmetric key non-attestation with signing key.  If Tag::ATTESTATION_CHALLENGE is not
-     *     provided and the generated/imported key has KeyPurpose::SIGN, then the returned
-     *     certificate chain must contain only a single self-signed certificate with no attestation
-     *     extension.  Tag::ATTESTATION_APPLICATION_ID will be ignored if provided.
+     *     provided and the generated/imported key has KeyPurpose::SIGN or KeyPurpose::ATTEST_KEY,
+     *     then the returned certificate chain must contain only a single self-signed certificate
+     *     with no attestation extension.  Tag::ATTESTATION_APPLICATION_ID will be ignored if
+     *     provided.
      *
      * 4.  Asymmetric key non-attestation with non-signing key.  If TAG::ATTESTATION_CHALLENGE is
-     *     not provided and the generated/imported key does not have KeyPurpose::SIGN, then the
-     *     returned certificate chain must contain only a single certificate with an empty signature
-     *     and no attestation extension.  Tag::ATTESTATION_APPLICATION_ID will be ignored if
-     *     provided.
+     *     not provided and the generated/imported key does not have KeyPurpose::SIGN nor
+     *     KeyPurpose::ATTEST_KEY, then the returned certificate chain must contain only a single
+     *     certificate with an empty signature and no attestation extension.
+     *     Tag::ATTESTATION_APPLICATION_ID will be ignored if provided.
      *
      * 5.  Symmetric key.  If the generated/imported key is symmetric, the certificate chain must
      *     return empty, any Tag::ATTESTATION_CHALLENGE or Tag::ATTESTATION_APPLICATION_ID inputs,
diff --git a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
index 8a26b3c..0bab54c 100644
--- a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
+++ b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
@@ -183,6 +183,14 @@
  * This test attempts to create an RSA attestation key that also allows signing.
  */
 TEST_P(AttestKeyTest, RsaAttestKeyMultiPurposeFail) {
+    if (AidlVersion() < 2) {
+        // The KeyMint v1 spec required that KeyPurpose::ATTEST_KEY not be combined
+        // with other key purposes.  However, this was not checked at the time
+        // so we can only be strict about checking this for implementations of KeyMint
+        // version 2 and above.
+        GTEST_SKIP() << "Single-purpose for KeyPurpose::ATTEST_KEY only strict since KeyMint v2";
+    }
+
     vector<uint8_t> attest_key_blob;
     vector<KeyCharacteristics> attest_key_characteristics;
     vector<Certificate> attest_key_cert_chain;
@@ -453,6 +461,13 @@
  * This test attempts to create an EC attestation key that also allows signing.
  */
 TEST_P(AttestKeyTest, EcAttestKeyMultiPurposeFail) {
+    if (AidlVersion() < 2) {
+        // The KeyMint v1 spec required that KeyPurpose::ATTEST_KEY not be combined
+        // with other key purposes.  However, this was not checked at the time
+        // so we can only be strict about checking this for implementations of KeyMint
+        // version 2 and above.
+        GTEST_SKIP() << "Single-purpose for KeyPurpose::ATTEST_KEY only strict since KeyMint v2";
+    }
     vector<uint8_t> attest_key_blob;
     vector<KeyCharacteristics> attest_key_characteristics;
     vector<Certificate> attest_key_cert_chain;
diff --git a/security/keymint/aidl/vts/functional/KeyMintTest.cpp b/security/keymint/aidl/vts/functional/KeyMintTest.cpp
index c734c37..1b1a1b4 100644
--- a/security/keymint/aidl/vts/functional/KeyMintTest.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintTest.cpp
@@ -3821,6 +3821,13 @@
  * Verifies that importing an RSA key pair with purpose ATTEST_KEY+SIGN fails.
  */
 TEST_P(ImportKeyTest, RsaAttestMultiPurposeFail) {
+    if (AidlVersion() < 2) {
+        // The KeyMint v1 spec required that KeyPurpose::ATTEST_KEY not be combined
+        // with other key purposes.  However, this was not checked at the time
+        // so we can only be strict about checking this for implementations of KeyMint
+        // version 2 and above.
+        GTEST_SKIP() << "Single-purpose for KeyPurpose::ATTEST_KEY only strict since KeyMint v2";
+    }
     uint32_t key_size = 2048;
     string key = rsa_2048_key;
 
@@ -3959,6 +3966,13 @@
  * Verifies that importing and using an ECDSA P-256 key pair with purpose ATTEST_KEY+SIGN fails.
  */
 TEST_P(ImportKeyTest, EcdsaAttestMultiPurposeFail) {
+    if (AidlVersion() < 2) {
+        // The KeyMint v1 spec required that KeyPurpose::ATTEST_KEY not be combined
+        // with other key purposes.  However, this was not checked at the time
+        // so we can only be strict about checking this for implementations of KeyMint
+        // version 2 and above.
+        GTEST_SKIP() << "Single-purpose for KeyPurpose::ATTEST_KEY only strict since KeyMint v2";
+    }
     ASSERT_EQ(ErrorCode::INCOMPATIBLE_PURPOSE,
               ImportKey(AuthorizationSetBuilder()
                                 .Authorization(TAG_NO_AUTH_REQUIRED)