Merge "Update Identity Credential VTS tests." into rvc-dev (f45b3cac) · Commits · e / os / android_hardware_interfaces

identity/aidl/android/hardware/identity/IIdentityCredential.aidl

+11 −18

Original line number	Diff line number	Diff line
		@@ -160,17 +160,10 @@ interface IIdentityCredential {
		* ItemsRequestBytes
		* ]
		*
		* SessionTranscript = [
		* DeviceEngagementBytes,
		* EReaderKeyBytes
		* ]
		* SessionTranscript = any
		*
		* DeviceEngagementBytes = #6.24(bstr .cbor DeviceEngagement)
		* EReaderKeyBytes = #6.24(bstr .cbor EReaderKey.Pub)
		* ItemsRequestBytes = #6.24(bstr .cbor ItemsRequest)
		*
		* EReaderKey.Pub = COSE_Key ; Ephemeral public key provided by reader
		*
		* The public key corresponding to the key used to made signature, can be found in the
		* 'x5chain' unprotected header element of the COSE_Sign1 structure (as as described
		* in 'draft-ietf-cose-x509-04'). There will be at least one certificate in said element
		@@ -184,8 +177,12 @@ interface IIdentityCredential {
		*
		* If the SessionTranscript CBOR is not empty, the X and Y coordinates of the public
		* part of the key-pair previously generated by createEphemeralKeyPair() must appear
		* somewhere in the bytes of DeviceEngagement structure. Both X and Y should be in
		* uncompressed form. If this is not satisfied, the call fails with
		* somewhere in the bytes of the CBOR. Each of these coordinates must appear encoded
		* with the most significant bits first and use the exact amount of bits indicated by
		* the key size of the ephemeral keys. For example, if the ephemeral key is using the
		* P-256 curve then the 32 bytes for the X coordinate encoded with the most significant
		* bits first must appear somewhere in the CBOR and ditto for the 32 bytes for the Y
		* coordinate. If this is not satisfied, the call fails with
		* STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND.
		*
		* @param accessControlProfiles
		@@ -298,13 +295,8 @@ interface IIdentityCredential {
		*
		* DocType = tstr
		*
		* SessionTranscript = [
		* DeviceEngagementBytes,
		* EReaderKeyBytes
		* ]
		* SessionTranscript = any
		*
		* DeviceEngagementBytes = #6.24(bstr .cbor DeviceEngagement)
		* EReaderKeyBytes = #6.24(bstr .cbor EReaderKey.Pub)
		* DeviceNameSpacesBytes = #6.24(bstr .cbor DeviceNameSpaces)
		*
		* where
		@@ -356,8 +348,9 @@ interface IIdentityCredential {
		*
		* - subjectPublicKeyInfo: must contain attested public key.
		*
		* @param out signingKeyBlob contains an encrypted copy of the newly-generated private
		* signing key.
		* @param out signingKeyBlob contains an AES-GCM-ENC(storageKey, R, signingKey, docType)
		* where signingKey is an EC private key in uncompressed form. That is, the returned
		* blob is an encrypted copy of the newly-generated private signing key.
		*
		* @return an X.509 certificate for the new signing key, signed by the credential key.
		*/

identity/aidl/android/hardware/identity/IWritableIdentityCredential.aidl

+22 −2

Original line number	Diff line number	Diff line
		@@ -29,9 +29,27 @@ interface IWritableIdentityCredential {
		* Gets the certificate chain for credentialKey which can be used to prove the hardware
		* characteristics to an issuing authority. Must not be called more than once.
		*
		* The following non-optional fields for the X.509 certificate shall be set as follows:
		*
		* - version: INTEGER 2 (means v3 certificate).
		*
		* - serialNumber: INTEGER 1 (fixed value: same on all certs).
		*
		* - signature: must be set to ECDSA.
		*
		* - subject: CN shall be set to "Android Identity Credential Key".
		*
		* - issuer: shall be set to "credentialStoreName (credentialStoreAuthorName)" using the
		* values returned in HardwareInformation.
		*
		* - validity: should be from current time and expire at the same time as the
		* attestation batch certificate used.
		*
		* - subjectPublicKeyInfo: must contain attested public key.
		*
		* The certificate chain must be generated using Keymaster Attestation
		* (see https://source.android.com/security/keystore/attestation) with the
		* following additional requirements:
		* following additional requirements on the data in the attestation extension:
		*
		* - The attestationVersion field in the attestation extension must be at least 3.
		*
		@@ -109,7 +127,8 @@ interface IWritableIdentityCredential {
		* in Tag::ATTESTATION_APPLICATION_ID. This schema is described in
		* https://developer.android.com/training/articles/security-key-attestation#certificate_schema_attestationid
		*
		* @param attestationChallenge a challenge set by the issuer to ensure freshness.
		* @param attestationChallenge a challenge set by the issuer to ensure freshness. If
		* this is empty, the call fails with STATUS_INVALID_DATA.
		*
		* @return the X.509 certificate chain for the credentialKey
		*/
		@@ -250,6 +269,7 @@ interface IWritableIdentityCredential {
		* CredentialKeys = [
		* bstr, ; storageKey, a 128-bit AES key
		* bstr ; credentialPrivKey, the private key for credentialKey
		* ; in uncompressed form
		* ]
		*
		* @param out proofOfProvisioningSignature proves to the IA that the credential was imported

identity/aidl/default/IdentityCredential.cpp

+9 −26

Original line number	Diff line number	Diff line
		@@ -164,6 +164,7 @@ ndk::ScopedAStatus IdentityCredential::createAuthChallenge(int64_t* outChallenge
		}

		*outChallenge = challenge;
		authChallenge_ = challenge;
		return ndk::ScopedAStatus::ok();
		}

		@@ -223,7 +224,8 @@ bool checkUserAuthentication(const SecureAccessControlProfile& profile,
		}

		if (authToken.challenge != int64_t(authChallenge)) {
		LOG(ERROR) << "Challenge in authToken doesn't match the challenge we created";
		LOG(ERROR) << "Challenge in authToken (" << uint64_t(authToken.challenge) << ") "
		<< "doesn't match the challenge we created (" << authChallenge << ")";
		return false;
		}
		return true;
		@@ -341,28 +343,6 @@ ndk::ScopedAStatus IdentityCredential::startRetrieval(
		//
		// We do this by just searching for the X and Y coordinates.
		if (sessionTranscript.size() > 0) {
		const cppbor::Array* array = sessionTranscriptItem_->asArray();
		if (array == nullptr \|\| array->size() != 2) {
		return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
		IIdentityCredentialStore::STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND,
		"SessionTranscript is not an array with two items"));
		}
		const cppbor::Semantic* taggedEncodedDE = (*array)[0]->asSemantic();
		if (taggedEncodedDE == nullptr \|\| taggedEncodedDE->value() != 24) {
		return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
		IIdentityCredentialStore::STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND,
		"First item in SessionTranscript array is not a "
		"semantic with value 24"));
		}
		const cppbor::Bstr* encodedDE = (taggedEncodedDE->child())->asBstr();
		if (encodedDE == nullptr) {
		return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
		IIdentityCredentialStore::STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND,
		"Child of semantic in first item in SessionTranscript "
		"array is not a bstr"));
		}
		const vector<uint8_t>& bytesDE = encodedDE->value();

		auto [getXYSuccess, ePubX, ePubY] = support::ecPublicKeyGetXandY(ephemeralPublicKey_);
		if (!getXYSuccess) {
		return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
		@@ -370,8 +350,10 @@ ndk::ScopedAStatus IdentityCredential::startRetrieval(
		"Error extracting X and Y from ePub"));
		}
		if (sessionTranscript.size() > 0 &&
		!(memmem(bytesDE.data(), bytesDE.size(), ePubX.data(), ePubX.size()) != nullptr &&
		memmem(bytesDE.data(), bytesDE.size(), ePubY.data(), ePubY.size()) != nullptr)) {
		!(memmem(sessionTranscript.data(), sessionTranscript.size(), ePubX.data(),
		ePubX.size()) != nullptr &&
		memmem(sessionTranscript.data(), sessionTranscript.size(), ePubY.data(),
		ePubY.size()) != nullptr)) {
		return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
		IIdentityCredentialStore::STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND,
		"Did not find ephemeral public key's X and Y coordinates in "
		@@ -478,9 +460,10 @@ ndk::ScopedAStatus IdentityCredential::startRetrieval(
		}

		// Validate all the access control profiles in the requestData.
		bool haveAuthToken = (authToken.mac.size() > 0);
		bool haveAuthToken = (authToken.timestamp.milliSeconds != int64_t(0));
		for (const auto& profile : accessControlProfiles) {
		if (!secureAccessControlProfileCheckMac(profile, storageKey_)) {
		LOG(ERROR) << "Error checking MAC for profile";
		return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
		IIdentityCredentialStore::STATUS_INVALID_DATA,
		"Error checking MAC for profile"));

identity/aidl/default/WritableIdentityCredential.cpp

+11 −0

Original line number	Diff line number	Diff line
		@@ -65,6 +65,10 @@ ndk::ScopedAStatus WritableIdentityCredential::getAttestationCertificate(
		IIdentityCredentialStore::STATUS_FAILED,
		"Error attestation certificate previously generated"));
		}
		if (attestationChallenge.empty()) {
		return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
		IIdentityCredentialStore::STATUS_INVALID_DATA, "Challenge can not be empty"));
		}

		vector<uint8_t> challenge(attestationChallenge.begin(), attestationChallenge.end());
		vector<uint8_t> appId(attestationApplicationId.begin(), attestationApplicationId.end());
		@@ -165,6 +169,13 @@ ndk::ScopedAStatus WritableIdentityCredential::addAccessControlProfile(
		"userAuthenticationRequired is false but timeout is non-zero"));
		}

		// If \|userAuthenticationRequired\| is true, then \|secureUserId\| must be non-zero.
		if (userAuthenticationRequired && secureUserId == 0) {
		return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
		IIdentityCredentialStore::STATUS_INVALID_DATA,
		"userAuthenticationRequired is true but secureUserId is zero"));
		}

		profile.id = id;
		profile.readerCertificate = readerCertificate;
		profile.userAuthenticationRequired = userAuthenticationRequired;

identity/aidl/vts/Android.bp

+3 −0

Original line number	Diff line number	Diff line
		@@ -10,6 +10,8 @@ cc_test {
		"VtsIdentityTestUtils.cpp",
		"VtsAttestationTests.cpp",
		"VtsAttestationParserSupport.cpp",
		"UserAuthTests.cpp",
		"ReaderAuthTests.cpp",
		],
		shared_libs: [
		"android.hardware.keymaster@4.0",
		@@ -18,6 +20,7 @@ cc_test {
		"libkeymaster_portable",
		"libsoft_attestation_cert",
		"libpuresoftkeymasterdevice",
		"android.hardware.keymaster-ndk_platform",
		],
		static_libs: [
		"libcppbor",