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- // Copyright 2018 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include <algorithm>
- #include "base/containers/contains.h"
- #include "components/cbor/reader.h"
- #include "components/cbor/values.h"
- #include "components/cbor/writer.h"
- #include "device/fido/attestation_statement_formats.h"
- #include "device/fido/authenticator_get_assertion_response.h"
- #include "device/fido/authenticator_make_credential_response.h"
- #include "device/fido/device_response_converter.h"
- #include "device/fido/fido_constants.h"
- #include "device/fido/fido_parsing_utils.h"
- #include "device/fido/fido_test_data.h"
- #include "device/fido/fido_transport_protocol.h"
- #include "device/fido/fido_types.h"
- #include "device/fido/opaque_attestation_statement.h"
- #include "device/fido/p256_public_key.h"
- #include "device/fido/public_key.h"
- #include "testing/gmock/include/gmock/gmock.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace device {
- namespace {
- // clang-format off
- constexpr uint8_t kTestAuthenticatorGetInfoResponseWithNoVersion[] = {
- // Success status byte
- 0x00,
- // Map of 6 elements
- 0xA6,
- // Key(01) - versions
- 0x01,
- // Array(0)
- 0x80,
- // Key(02) - extensions
- 0x02,
- // Array(2)
- 0x82,
- // "uvm"
- 0x63, 0x75, 0x76, 0x6D,
- // "hmac-secret"
- 0x6B, 0x68, 0x6D, 0x61, 0x63, 0x2D, 0x73, 0x65, 0x63, 0x72, 0x65, 0x74,
- // Key(03) - AAGUID
- 0x03,
- // Bytes(16)
- 0x50, 0xF8, 0xA0, 0x11, 0xF3, 0x8C, 0x0A, 0x4D, 0x15, 0x80, 0x06, 0x17,
- 0x11, 0x1F, 0x9E, 0xDC, 0x7D,
- // Key(04) - options
- 0x04,
- // Map(05)
- 0xA5,
- // Key - "rk"
- 0x62, 0x72, 0x6B,
- // true
- 0xF5,
- // Key - "up"
- 0x62, 0x75, 0x70,
- // true
- 0xF5,
- // Key - "uv"
- 0x62, 0x75, 0x76,
- // true
- 0xF5,
- // Key - "plat"
- 0x64, 0x70, 0x6C, 0x61, 0x74,
- // true
- 0xF5,
- // Key - "clientPin"
- 0x69, 0x63, 0x6C, 0x69, 0x65, 0x6E, 0x74, 0x50, 0x69, 0x6E,
- // false
- 0xF4,
- // Key(05) - Max message size
- 0x05,
- // 1200
- 0x19, 0x04, 0xB0,
- // Key(06) - Pin protocols
- 0x06,
- // Array[1]
- 0x81, 0x01,
- };
- constexpr uint8_t kTestAuthenticatorGetInfoResponseWithDuplicateVersion[] = {
- // Success status byte
- 0x00,
- // Map of 6 elements
- 0xA6,
- // Key(01) - versions
- 0x01,
- // Array(03)
- 0x83,
- // "U2F_V9"
- 0x66, 0x55, 0x32, 0x46, 0x5F, 0x56, 0x39,
- // "U2F_V9"
- 0x66, 0x55, 0x32, 0x46, 0x5F, 0x56, 0x39,
- // "U2F_V2"
- 0x66, 0x55, 0x32, 0x46, 0x5F, 0x56, 0x32,
- // Key(02) - extensions
- 0x02,
- // Array(2)
- 0x82,
- // "uvm"
- 0x63, 0x75, 0x76, 0x6D,
- // "hmac-secret"
- 0x6B, 0x68, 0x6D, 0x61, 0x63, 0x2D, 0x73, 0x65, 0x63, 0x72, 0x65, 0x74,
- // Key(03) - AAGUID
- 0x03,
- // Bytes(16)
- 0x50, 0xF8, 0xA0, 0x11, 0xF3, 0x8C, 0x0A, 0x4D, 0x15, 0x80, 0x06, 0x17,
- 0x11, 0x1F, 0x9E, 0xDC, 0x7D,
- // Key(04) - options
- 0x04,
- // Map(05)
- 0xA5,
- // Key - "rk"
- 0x62, 0x72, 0x6B,
- // true
- 0xF5,
- // Key - "up"
- 0x62, 0x75, 0x70,
- // true
- 0xF5,
- // Key - "uv"
- 0x62, 0x75, 0x76,
- // true
- 0xF5,
- // Key - "plat"
- 0x64, 0x70, 0x6C, 0x61, 0x74,
- // true
- 0xF5,
- // Key - "clientPin"
- 0x69, 0x63, 0x6C, 0x69, 0x65, 0x6E, 0x74, 0x50, 0x69, 0x6E,
- // false
- 0xF4,
- // Key(05) - Max message size
- 0x05,
- // 1200
- 0x19, 0x04, 0xB0,
- // Key(06) - Pin protocols
- 0x06,
- // Array[1]
- 0x81, 0x01,
- };
- constexpr uint8_t kTestAuthenticatorGetInfoResponseWithCtap2_1[] = {
- // Success status byte
- 0x00,
- // Map of 6 elements
- 0xA6,
- // Key(01) - versions
- 0x01,
- // Array(03)
- 0x83,
- // "U2F_V2"
- 0x66, 'U', '2', 'F', '_', 'V', '2',
- // "FIDO_2_0"
- 0x68, 'F', 'I', 'D', 'O', '_', '2', '_', '0',
- // "FIDO_2_1"
- 0x68, 'F', 'I', 'D', 'O', '_', '2', '_', '1',
- // Key(02) - extensions
- 0x02,
- // Array(2)
- 0x82,
- // "uvm"
- 0x63, 0x75, 0x76, 0x6D,
- // "hmac-secret"
- 0x6B, 0x68, 0x6D, 0x61, 0x63, 0x2D, 0x73, 0x65, 0x63, 0x72, 0x65, 0x74,
- // Key(03) - AAGUID
- 0x03,
- // Bytes(16)
- 0x50, 0xF8, 0xA0, 0x11, 0xF3, 0x8C, 0x0A, 0x4D, 0x15, 0x80, 0x06, 0x17,
- 0x11, 0x1F, 0x9E, 0xDC, 0x7D,
- // Key(04) - options
- 0x04,
- // Map(05)
- 0xA5,
- // Key - "rk"
- 0x62, 0x72, 0x6B,
- // true
- 0xF5,
- // Key - "up"
- 0x62, 0x75, 0x70,
- // true
- 0xF5,
- // Key - "uv"
- 0x62, 0x75, 0x76,
- // true
- 0xF5,
- // Key - "plat"
- 0x64, 0x70, 0x6C, 0x61, 0x74,
- // true
- 0xF5,
- // Key - "clientPin"
- 0x69, 0x63, 0x6C, 0x69, 0x65, 0x6E, 0x74, 0x50, 0x69, 0x6E,
- // false
- 0xF4,
- // Key(05) - Max message size
- 0x05,
- // 1200
- 0x19, 0x04, 0xB0,
- // Key(06) - Pin protocols
- 0x06,
- // Array[1]
- 0x81, 0x01,
- };
- constexpr uint8_t kTestAuthenticatorGetInfoResponseOnlyCtap2_1[] = {
- // Success status byte
- 0x00,
- // Map of 6 elements
- 0xA6,
- // Key(01) - versions
- 0x01,
- // Array(01)
- 0x81,
- // "FIDO_2_1"
- 0x68, 'F', 'I', 'D', 'O', '_', '2', '_', '1',
- // Key(02) - extensions
- 0x02,
- // Array(2)
- 0x82,
- // "uvm"
- 0x63, 0x75, 0x76, 0x6D,
- // "hmac-secret"
- 0x6B, 0x68, 0x6D, 0x61, 0x63, 0x2D, 0x73, 0x65, 0x63, 0x72, 0x65, 0x74,
- // Key(03) - AAGUID
- 0x03,
- // Bytes(16)
- 0x50, 0xF8, 0xA0, 0x11, 0xF3, 0x8C, 0x0A, 0x4D, 0x15, 0x80, 0x06, 0x17,
- 0x11, 0x1F, 0x9E, 0xDC, 0x7D,
- // Key(04) - options
- 0x04,
- // Map(05)
- 0xA5,
- // Key - "rk"
- 0x62, 0x72, 0x6B,
- // true
- 0xF5,
- // Key - "up"
- 0x62, 0x75, 0x70,
- // true
- 0xF5,
- // Key - "uv"
- 0x62, 0x75, 0x76,
- // true
- 0xF5,
- // Key - "plat"
- 0x64, 0x70, 0x6C, 0x61, 0x74,
- // true
- 0xF5,
- // Key - "clientPin"
- 0x69, 0x63, 0x6C, 0x69, 0x65, 0x6E, 0x74, 0x50, 0x69, 0x6E,
- // false
- 0xF4,
- // Key(05) - Max message size
- 0x05,
- // 1200
- 0x19, 0x04, 0xB0,
- // Key(06) - Pin protocols
- 0x06,
- // Array[1]
- 0x81, 0x01,
- };
- constexpr uint8_t kTestAuthenticatorGetInfoResponseWithIncorrectAaguid[] = {
- // Success status byte
- 0x00,
- // Map of 6 elements
- 0xA6,
- // Key(01) - versions
- 0x01,
- // Array(01)
- 0x81,
- // "U2F_V2"
- 0x66, 0x55, 0x32, 0x46, 0x5F, 0x56, 0x32,
- // Key(02) - extensions
- 0x02,
- // Array(2)
- 0x82,
- // "uvm"
- 0x63, 0x75, 0x76, 0x6D,
- // "hmac-secret"
- 0x6B, 0x68, 0x6D, 0x61, 0x63, 0x2D, 0x73, 0x65, 0x63, 0x72, 0x65, 0x74,
- // Key(03) - AAGUID
- 0x03,
- // Bytes(17) - FIDO2 device AAGUID must be 16 bytes long in order to be
- // correct.
- 0x51, 0xF8, 0xA0, 0x11, 0xF3, 0x8C, 0x0A, 0x4D, 0x15, 0x80, 0x06, 0x17,
- 0x11, 0x1F, 0x9E, 0xDC, 0x7D, 0x00,
- // Key(04) - options
- 0x04,
- // Map(05)
- 0xA5,
- // Key - "rk"
- 0x62, 0x72, 0x6B,
- // true
- 0xF5,
- // Key - "up"
- 0x62, 0x75, 0x70,
- // true
- 0xF5,
- // Key - "uv"
- 0x62, 0x75, 0x76,
- // true
- 0xF5,
- // Key - "plat"
- 0x64, 0x70, 0x6C, 0x61, 0x74,
- // true
- 0xF5,
- // Key - "clientPin"
- 0x69, 0x63, 0x6C, 0x69, 0x65, 0x6E, 0x74, 0x50, 0x69, 0x6E,
- // false
- 0xF4,
- // Key(05) - Max message size
- 0x05,
- // 1200
- 0x19, 0x04, 0xB0,
- // Key(06) - Pin protocols
- 0x06,
- // Array[1]
- 0x81, 0x01,
- };
- // The attested credential data, excluding the public key bytes. Append
- // with kTestECPublicKeyCOSE to get the complete attestation data.
- constexpr uint8_t kTestAttestedCredentialDataPrefix[] = {
- // 16-byte aaguid
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00,
- // 2-byte length
- 0x00, 0x40,
- // 64-byte key handle
- 0x3E, 0xBD, 0x89, 0xBF, 0x77, 0xEC, 0x50, 0x97, 0x55, 0xEE, 0x9C, 0x26,
- 0x35, 0xEF, 0xAA, 0xAC, 0x7B, 0x2B, 0x9C, 0x5C, 0xEF, 0x17, 0x36, 0xC3,
- 0x71, 0x7D, 0xA4, 0x85, 0x34, 0xC8, 0xC6, 0xB6, 0x54, 0xD7, 0xFF, 0x94,
- 0x5F, 0x50, 0xB5, 0xCC, 0x4E, 0x78, 0x05, 0x5B, 0xDD, 0x39, 0x6B, 0x64,
- 0xF7, 0x8D, 0xA2, 0xC5, 0xF9, 0x62, 0x00, 0xCC, 0xD4, 0x15, 0xCD, 0x08,
- 0xFE, 0x42, 0x00, 0x38,
- };
- // The authenticator data, excluding the attested credential data bytes. Append
- // with attested credential data to get the complete authenticator data.
- constexpr uint8_t kTestAuthenticatorDataPrefix[] = {
- // sha256 hash of rp id.
- 0x11, 0x94, 0x22, 0x8D, 0xA8, 0xFD, 0xBD, 0xEE, 0xFD, 0x26, 0x1B, 0xD7,
- 0xB6, 0x59, 0x5C, 0xFD, 0x70, 0xA5, 0x0D, 0x70, 0xC6, 0x40, 0x7B, 0xCF,
- 0x01, 0x3D, 0xE9, 0x6D, 0x4E, 0xFB, 0x17, 0xDE,
- // flags (TUP and AT bits set)
- 0x41,
- // counter
- 0x00, 0x00, 0x00, 0x00};
- // Components of the CBOR needed to form an authenticator object.
- // Combined diagnostic notation:
- // {"fmt": "fido-u2f", "attStmt": {"sig": h'30...}, "authData": h'D4C9D9...'}
- constexpr uint8_t kFormatFidoU2fCBOR[] = {
- // map(3)
- 0xA3,
- // text(3)
- 0x63,
- // "fmt"
- 0x66, 0x6D, 0x74,
- // text(8)
- 0x68,
- // "fido-u2f"
- 0x66, 0x69, 0x64, 0x6F, 0x2D, 0x75, 0x32, 0x66};
- constexpr uint8_t kAttStmtCBOR[] = {
- // text(7)
- 0x67,
- // "attStmt"
- 0x61, 0x74, 0x74, 0x53, 0x74, 0x6D, 0x74};
- constexpr uint8_t kAuthDataCBOR[] = {
- // text(8)
- 0x68,
- // "authData"
- 0x61, 0x75, 0x74, 0x68, 0x44, 0x61, 0x74, 0x61,
- // bytes(196). i.e., the authenticator_data byte array corresponding to
- // kTestAuthenticatorDataPrefix|, |kTestAttestedCredentialDataPrefix|,
- // and test_data::kTestECPublicKeyCOSE.
- 0x58, 0xC4};
- // clang-format on
- constexpr std::array<uint8_t, kAaguidLength> kTestDeviceAaguid = {
- {0xF8, 0xA0, 0x11, 0xF3, 0x8C, 0x0A, 0x4D, 0x15, 0x80, 0x06, 0x17, 0x11,
- 0x1F, 0x9E, 0xDC, 0x7D}};
- std::vector<uint8_t> GetTestAttestedCredentialDataBytes() {
- // Combine kTestAttestedCredentialDataPrefix and kTestECPublicKeyCOSE.
- auto test_attested_data =
- fido_parsing_utils::Materialize(kTestAttestedCredentialDataPrefix);
- fido_parsing_utils::Append(&test_attested_data,
- test_data::kTestECPublicKeyCOSE);
- return test_attested_data;
- }
- std::vector<uint8_t> GetTestAuthenticatorDataBytes() {
- // Build the test authenticator data.
- auto test_authenticator_data =
- fido_parsing_utils::Materialize(kTestAuthenticatorDataPrefix);
- auto test_attested_data = GetTestAttestedCredentialDataBytes();
- fido_parsing_utils::Append(&test_authenticator_data, test_attested_data);
- return test_authenticator_data;
- }
- std::vector<uint8_t> GetTestAttestationObjectBytes() {
- auto test_authenticator_object =
- fido_parsing_utils::Materialize(kFormatFidoU2fCBOR);
- fido_parsing_utils::Append(&test_authenticator_object, kAttStmtCBOR);
- fido_parsing_utils::Append(&test_authenticator_object,
- test_data::kU2fAttestationStatementCBOR);
- fido_parsing_utils::Append(&test_authenticator_object, kAuthDataCBOR);
- auto test_authenticator_data = GetTestAuthenticatorDataBytes();
- fido_parsing_utils::Append(&test_authenticator_object,
- test_authenticator_data);
- return test_authenticator_object;
- }
- std::vector<uint8_t> GetTestSignResponse() {
- return fido_parsing_utils::Materialize(test_data::kTestU2fSignResponse);
- }
- // Get a subset of the response for testing error handling.
- std::vector<uint8_t> GetTestCorruptedSignResponse(size_t length) {
- DCHECK_LE(length, std::size(test_data::kTestU2fSignResponse));
- return fido_parsing_utils::Materialize(fido_parsing_utils::ExtractSpan(
- test_data::kTestU2fSignResponse, 0, length));
- }
- // Return a key handle used for GetAssertion request.
- std::vector<uint8_t> GetTestCredentialRawIdBytes() {
- return fido_parsing_utils::Materialize(test_data::kU2fSignKeyHandle);
- }
- // DecodeCBOR parses a CBOR structure, ignoring the first byte of |in|, which is
- // assumed to be a CTAP2 status byte.
- absl::optional<cbor::Value> DecodeCBOR(base::span<const uint8_t> in) {
- CHECK(!in.empty());
- return cbor::Reader::Read(in.subspan(1));
- }
- } // namespace
- // Leveraging example 4 of section 6.1 of the spec https://fidoalliance.org
- // /specs/fido-v2.0-rd-20170927/fido-client-to-authenticator-protocol-v2.0-rd-
- // 20170927.html
- TEST(CTAPResponseTest, TestReadMakeCredentialResponse) {
- auto make_credential_response = ReadCTAPMakeCredentialResponse(
- FidoTransportProtocol::kUsbHumanInterfaceDevice,
- DecodeCBOR(test_data::kTestMakeCredentialResponse));
- ASSERT_TRUE(make_credential_response);
- auto cbor_attestation_object = cbor::Reader::Read(
- make_credential_response->GetCBOREncodedAttestationObject());
- ASSERT_TRUE(cbor_attestation_object);
- ASSERT_TRUE(cbor_attestation_object->is_map());
- const auto& attestation_object_map = cbor_attestation_object->GetMap();
- auto it = attestation_object_map.find(cbor::Value(kFormatKey));
- ASSERT_TRUE(it != attestation_object_map.end());
- ASSERT_TRUE(it->second.is_string());
- EXPECT_EQ(it->second.GetString(), "packed");
- it = attestation_object_map.find(cbor::Value(kAuthDataKey));
- ASSERT_TRUE(it != attestation_object_map.end());
- ASSERT_TRUE(it->second.is_bytestring());
- EXPECT_THAT(
- it->second.GetBytestring(),
- ::testing::ElementsAreArray(test_data::kCtap2MakeCredentialAuthData));
- it = attestation_object_map.find(cbor::Value(kAttestationStatementKey));
- ASSERT_TRUE(it != attestation_object_map.end());
- ASSERT_TRUE(it->second.is_map());
- const auto& attestation_statement_map = it->second.GetMap();
- auto attStmt_it = attestation_statement_map.find(cbor::Value("alg"));
- ASSERT_TRUE(attStmt_it != attestation_statement_map.end());
- ASSERT_TRUE(attStmt_it->second.is_integer());
- EXPECT_EQ(attStmt_it->second.GetInteger(), -7);
- attStmt_it = attestation_statement_map.find(cbor::Value("sig"));
- ASSERT_TRUE(attStmt_it != attestation_statement_map.end());
- ASSERT_TRUE(attStmt_it->second.is_bytestring());
- EXPECT_THAT(
- attStmt_it->second.GetBytestring(),
- ::testing::ElementsAreArray(test_data::kCtap2MakeCredentialSignature));
- attStmt_it = attestation_statement_map.find(cbor::Value("x5c"));
- ASSERT_TRUE(attStmt_it != attestation_statement_map.end());
- const auto& certificate = attStmt_it->second;
- ASSERT_TRUE(certificate.is_array());
- ASSERT_EQ(certificate.GetArray().size(), 1u);
- ASSERT_TRUE(certificate.GetArray()[0].is_bytestring());
- EXPECT_THAT(
- certificate.GetArray()[0].GetBytestring(),
- ::testing::ElementsAreArray(test_data::kCtap2MakeCredentialCertificate));
- EXPECT_THAT(
- make_credential_response->attestation_object().GetCredentialId(),
- ::testing::ElementsAreArray(test_data::kCtap2MakeCredentialCredentialId));
- }
- TEST(CTAPResponseTest, TestMakeCredentialNoneAttestationResponse) {
- auto make_credential_response = ReadCTAPMakeCredentialResponse(
- FidoTransportProtocol::kUsbHumanInterfaceDevice,
- DecodeCBOR(test_data::kTestMakeCredentialResponse));
- ASSERT_TRUE(make_credential_response);
- make_credential_response->EraseAttestationStatement(
- AttestationObject::AAGUID::kErase);
- EXPECT_THAT(make_credential_response->GetCBOREncodedAttestationObject(),
- ::testing::ElementsAreArray(test_data::kNoneAttestationResponse));
- }
- // Leveraging example 5 of section 6.1 of the CTAP spec.
- // https://fidoalliance.org/specs/fido-v2.0-rd-20170927/fido-client-to-authenticator-protocol-v2.0-rd-20170927.html
- TEST(CTAPResponseTest, TestReadGetAssertionResponse) {
- auto get_assertion_response = ReadCTAPGetAssertionResponse(
- FidoTransportProtocol::kBluetoothLowEnergy,
- DecodeCBOR(test_data::kDeviceGetAssertionResponse));
- ASSERT_TRUE(get_assertion_response);
- EXPECT_EQ(*get_assertion_response->transport_used,
- FidoTransportProtocol::kBluetoothLowEnergy);
- ASSERT_TRUE(get_assertion_response->num_credentials);
- EXPECT_EQ(*get_assertion_response->num_credentials, 1u);
- EXPECT_THAT(
- get_assertion_response->authenticator_data.SerializeToByteArray(),
- ::testing::ElementsAreArray(test_data::kCtap2GetAssertionAuthData));
- EXPECT_THAT(
- get_assertion_response->signature,
- ::testing::ElementsAreArray(test_data::kCtap2GetAssertionSignature));
- }
- // Test that U2F register response is properly parsed.
- TEST(CTAPResponseTest, TestParseRegisterResponseData) {
- auto response =
- AuthenticatorMakeCredentialResponse::CreateFromU2fRegisterResponse(
- FidoTransportProtocol::kUsbHumanInterfaceDevice,
- test_data::kApplicationParameter,
- test_data::kTestU2fRegisterResponse);
- ASSERT_TRUE(response);
- EXPECT_THAT(response->attestation_object().GetCredentialId(),
- ::testing::ElementsAreArray(test_data::kU2fSignKeyHandle));
- EXPECT_EQ(GetTestAttestationObjectBytes(),
- response->GetCBOREncodedAttestationObject());
- }
- // These test the parsing of the U2F raw bytes of the registration response.
- // Test that an EC public key serializes to CBOR properly.
- TEST(CTAPResponseTest, TestSerializedPublicKey) {
- auto public_key = P256PublicKey::ExtractFromU2fRegistrationResponse(
- static_cast<int32_t>(CoseAlgorithmIdentifier::kEs256),
- test_data::kTestU2fRegisterResponse);
- ASSERT_TRUE(public_key);
- EXPECT_THAT(public_key->cose_key_bytes,
- ::testing::ElementsAreArray(test_data::kTestECPublicKeyCOSE));
- }
- // Test that the attestation statement cbor map is constructed properly.
- TEST(CTAPResponseTest, TestParseU2fAttestationStatementCBOR) {
- auto fido_attestation_statement =
- FidoAttestationStatement::CreateFromU2fRegisterResponse(
- test_data::kTestU2fRegisterResponse);
- ASSERT_TRUE(fido_attestation_statement);
- auto cbor = cbor::Writer::Write(AsCBOR(*fido_attestation_statement));
- ASSERT_TRUE(cbor);
- EXPECT_THAT(*cbor, ::testing::ElementsAreArray(
- test_data::kU2fAttestationStatementCBOR));
- }
- // Tests that well-formed attested credential data serializes properly.
- TEST(CTAPResponseTest, TestSerializeAttestedCredentialData) {
- auto public_key = P256PublicKey::ExtractFromU2fRegistrationResponse(
- static_cast<int32_t>(CoseAlgorithmIdentifier::kEs256),
- test_data::kTestU2fRegisterResponse);
- auto attested_data = AttestedCredentialData::CreateFromU2fRegisterResponse(
- test_data::kTestU2fRegisterResponse, std::move(public_key));
- ASSERT_TRUE(attested_data);
- EXPECT_EQ(GetTestAttestedCredentialDataBytes(),
- attested_data->SerializeAsBytes());
- }
- // Tests that well-formed authenticator data serializes properly.
- TEST(CTAPResponseTest, TestSerializeAuthenticatorData) {
- auto public_key = P256PublicKey::ExtractFromU2fRegistrationResponse(
- static_cast<int32_t>(CoseAlgorithmIdentifier::kEs256),
- test_data::kTestU2fRegisterResponse);
- auto attested_data = AttestedCredentialData::CreateFromU2fRegisterResponse(
- test_data::kTestU2fRegisterResponse, std::move(public_key));
- constexpr uint8_t flags =
- static_cast<uint8_t>(AuthenticatorData::Flag::kTestOfUserPresence) |
- static_cast<uint8_t>(AuthenticatorData::Flag::kAttestation);
- AuthenticatorData authenticator_data(test_data::kApplicationParameter, flags,
- std::array<uint8_t, 4>{} /* counter */,
- std::move(attested_data));
- EXPECT_EQ(GetTestAuthenticatorDataBytes(),
- authenticator_data.SerializeToByteArray());
- }
- // Tests that a U2F attestation object serializes properly.
- TEST(CTAPResponseTest, TestSerializeU2fAttestationObject) {
- auto public_key = P256PublicKey::ExtractFromU2fRegistrationResponse(
- static_cast<int32_t>(CoseAlgorithmIdentifier::kEs256),
- test_data::kTestU2fRegisterResponse);
- auto attested_data = AttestedCredentialData::CreateFromU2fRegisterResponse(
- test_data::kTestU2fRegisterResponse, std::move(public_key));
- constexpr uint8_t flags =
- static_cast<uint8_t>(AuthenticatorData::Flag::kTestOfUserPresence) |
- static_cast<uint8_t>(AuthenticatorData::Flag::kAttestation);
- AuthenticatorData authenticator_data(test_data::kApplicationParameter, flags,
- std::array<uint8_t, 4>{} /* counter */,
- std::move(attested_data));
- // Construct the attestation statement.
- auto fido_attestation_statement =
- FidoAttestationStatement::CreateFromU2fRegisterResponse(
- test_data::kTestU2fRegisterResponse);
- // Construct the attestation object.
- auto attestation_object = std::make_unique<AttestationObject>(
- std::move(authenticator_data), std::move(fido_attestation_statement));
- ASSERT_TRUE(attestation_object);
- EXPECT_EQ(GetTestAttestationObjectBytes(),
- cbor::Writer::Write(AsCBOR(*attestation_object))
- .value_or(std::vector<uint8_t>()));
- }
- // Tests that U2F authenticator data is properly serialized.
- TEST(CTAPResponseTest, TestSerializeAuthenticatorDataForSign) {
- constexpr uint8_t flags =
- static_cast<uint8_t>(AuthenticatorData::Flag::kTestOfUserPresence);
- EXPECT_THAT(
- AuthenticatorData(test_data::kApplicationParameter, flags,
- test_data::kTestSignatureCounter, absl::nullopt)
- .SerializeToByteArray(),
- ::testing::ElementsAreArray(test_data::kTestSignAuthenticatorData));
- }
- TEST(CTAPResponseTest, TestParseSignResponseData) {
- auto response = AuthenticatorGetAssertionResponse::CreateFromU2fSignResponse(
- test_data::kApplicationParameter, GetTestSignResponse(),
- GetTestCredentialRawIdBytes());
- ASSERT_TRUE(response);
- EXPECT_EQ(GetTestCredentialRawIdBytes(), response->credential->id);
- EXPECT_THAT(
- response->authenticator_data.SerializeToByteArray(),
- ::testing::ElementsAreArray(test_data::kTestSignAuthenticatorData));
- EXPECT_THAT(response->signature,
- ::testing::ElementsAreArray(test_data::kU2fSignature));
- }
- TEST(CTAPResponseTest, TestParseU2fSignWithNullNullKeyHandle) {
- auto response = AuthenticatorGetAssertionResponse::CreateFromU2fSignResponse(
- test_data::kApplicationParameter, GetTestSignResponse(),
- std::vector<uint8_t>());
- EXPECT_FALSE(response);
- }
- TEST(CTAPResponseTest, TestParseU2fSignWithNullResponse) {
- auto response = AuthenticatorGetAssertionResponse::CreateFromU2fSignResponse(
- test_data::kApplicationParameter, std::vector<uint8_t>(),
- GetTestCredentialRawIdBytes());
- EXPECT_FALSE(response);
- }
- TEST(CTAPResponseTest, TestParseU2fSignWithCTAP2Flags) {
- std::vector<uint8_t> sign_response = GetTestSignResponse();
- // Set two flags that should only be set in CTAP2 responses and expect parsing
- // to fail.
- sign_response[0] |=
- static_cast<uint8_t>(AuthenticatorData::Flag::kExtensionDataIncluded);
- sign_response[0] |=
- static_cast<uint8_t>(AuthenticatorData::Flag::kAttestation);
- auto response = AuthenticatorGetAssertionResponse::CreateFromU2fSignResponse(
- test_data::kApplicationParameter, sign_response,
- GetTestCredentialRawIdBytes());
- EXPECT_FALSE(response);
- }
- TEST(CTAPResponseTest, TestParseU2fSignWithNullCorruptedCounter) {
- // A sign response of less than 5 bytes.
- auto response = AuthenticatorGetAssertionResponse::CreateFromU2fSignResponse(
- test_data::kApplicationParameter, GetTestCorruptedSignResponse(3),
- GetTestCredentialRawIdBytes());
- EXPECT_FALSE(response);
- }
- TEST(CTAPResponseTest, TestParseU2fSignWithNullCorruptedSignature) {
- // A sign response no more than 5 bytes.
- auto response = AuthenticatorGetAssertionResponse::CreateFromU2fSignResponse(
- test_data::kApplicationParameter, GetTestCorruptedSignResponse(5),
- GetTestCredentialRawIdBytes());
- EXPECT_FALSE(response);
- }
- TEST(CTAPResponseTest, TestReadGetInfoResponse) {
- auto get_info_response =
- ReadCTAPGetInfoResponse(test_data::kTestGetInfoResponsePlatformDevice);
- ASSERT_TRUE(get_info_response);
- ASSERT_TRUE(get_info_response->max_msg_size);
- EXPECT_EQ(*get_info_response->max_msg_size, 1200u);
- EXPECT_TRUE(
- base::Contains(get_info_response->versions, ProtocolVersion::kCtap2));
- EXPECT_TRUE(
- base::Contains(get_info_response->versions, ProtocolVersion::kU2f));
- EXPECT_EQ(get_info_response->ctap2_versions.size(), 1u);
- EXPECT_TRUE(base::Contains(get_info_response->ctap2_versions,
- Ctap2Version::kCtap2_0));
- EXPECT_TRUE(get_info_response->options.is_platform_device);
- EXPECT_TRUE(get_info_response->options.supports_resident_key);
- EXPECT_TRUE(get_info_response->options.supports_user_presence);
- EXPECT_EQ(AuthenticatorSupportedOptions::UserVerificationAvailability::
- kSupportedAndConfigured,
- get_info_response->options.user_verification_availability);
- EXPECT_EQ(AuthenticatorSupportedOptions::ClientPinAvailability::
- kSupportedButPinNotSet,
- get_info_response->options.client_pin_availability);
- }
- TEST(CTAPResponseTest, TestReadGetInfoResponseWithDuplicateVersion) {
- uint8_t
- get_info[sizeof(kTestAuthenticatorGetInfoResponseWithDuplicateVersion)];
- memcpy(get_info, kTestAuthenticatorGetInfoResponseWithDuplicateVersion,
- sizeof(get_info));
- // Should fail to parse with duplicate versions.
- EXPECT_FALSE(ReadCTAPGetInfoResponse(get_info));
- // Find the first of the duplicate versions and change it to a different
- // value. That should be sufficient to make the data parsable.
- static const char kU2Fv9[] = "U2F_V9";
- uint8_t* first_version =
- std::search(get_info, get_info + sizeof(get_info), kU2Fv9, kU2Fv9 + 6);
- ASSERT_TRUE(first_version);
- memcpy(first_version, "U2F_V3", 6);
- absl::optional<AuthenticatorGetInfoResponse> response =
- ReadCTAPGetInfoResponse(get_info);
- ASSERT_TRUE(response);
- EXPECT_EQ(1u, response->versions.size());
- EXPECT_TRUE(response->versions.contains(ProtocolVersion::kU2f));
- EXPECT_EQ(response->ctap2_versions.size(), 0u);
- }
- TEST(CTAPResponseTest, TestReadGetInfoResponseWithCtap2_1) {
- auto response =
- ReadCTAPGetInfoResponse(kTestAuthenticatorGetInfoResponseWithCtap2_1);
- ASSERT_TRUE(response);
- EXPECT_EQ(2u, response->versions.size());
- EXPECT_TRUE(response->versions.contains(ProtocolVersion::kU2f));
- EXPECT_TRUE(response->versions.contains(ProtocolVersion::kCtap2));
- EXPECT_EQ(response->ctap2_versions.size(), 2u);
- EXPECT_TRUE(base::Contains(response->ctap2_versions, Ctap2Version::kCtap2_0));
- EXPECT_TRUE(base::Contains(response->ctap2_versions, Ctap2Version::kCtap2_1));
- }
- // Tests that an authenticator returning only the string "FIDO_2_1" is properly
- // recognized as a CTAP 2.1 authenticator.
- TEST(CTAPResponseTest, TestReadGetInfoResponseOnlyCtap2_1) {
- auto response =
- ReadCTAPGetInfoResponse(kTestAuthenticatorGetInfoResponseOnlyCtap2_1);
- ASSERT_TRUE(response);
- EXPECT_EQ(1u, response->versions.size());
- EXPECT_TRUE(response->versions.contains(ProtocolVersion::kCtap2));
- EXPECT_EQ(response->ctap2_versions.size(), 1u);
- EXPECT_TRUE(base::Contains(response->ctap2_versions, Ctap2Version::kCtap2_1));
- }
- TEST(CTAPResponseTest, TestReadGetInfoResponseWithIncorrectFormat) {
- EXPECT_FALSE(
- ReadCTAPGetInfoResponse(kTestAuthenticatorGetInfoResponseWithNoVersion));
- EXPECT_FALSE(ReadCTAPGetInfoResponse(
- kTestAuthenticatorGetInfoResponseWithIncorrectAaguid));
- }
- TEST(CTAPResponseTest, TestSerializeGetInfoResponse) {
- AuthenticatorGetInfoResponse response(
- {ProtocolVersion::kCtap2, ProtocolVersion::kU2f},
- {Ctap2Version::kCtap2_0}, kTestDeviceAaguid);
- response.extensions.emplace({std::string("uvm"), std::string("hmac-secret")});
- AuthenticatorSupportedOptions options;
- options.supports_resident_key = true;
- options.is_platform_device = true;
- options.client_pin_availability = AuthenticatorSupportedOptions::
- ClientPinAvailability::kSupportedButPinNotSet;
- options.user_verification_availability = AuthenticatorSupportedOptions::
- UserVerificationAvailability::kSupportedAndConfigured;
- response.options = std::move(options);
- response.max_msg_size = 1200;
- response.pin_protocols.emplace({PINUVAuthProtocol::kV1});
- response.algorithms.reset();
- EXPECT_THAT(AuthenticatorGetInfoResponse::EncodeToCBOR(response),
- ::testing::ElementsAreArray(
- base::make_span(test_data::kTestGetInfoResponsePlatformDevice)
- .subspan(1)));
- }
- TEST(CTAPResponseTest, TestSerializeMakeCredentialResponse) {
- constexpr uint8_t kCoseEncodedPublicKey[] = {
- // clang-format off
- // map(5)
- 0xa5,
- 0x01, // unsigned(1) kty
- 0x02, // unsigned(2) EC2
- 0x03, // unsigned(3) alg
- 0x26, // negative(6) ES256
- 0x20, // negative(0) crv
- 0x01, // unsigned(1) P-256
- 0x21, // negative(1) x
- // byte(32)
- 0x58, 0x20, 0xf7, 0xc4, 0xf4, 0xa6, 0xf1, 0xd7, 0x95, 0x38, 0xdf, 0xa4,
- 0xc9, 0xac, 0x50, 0x84, 0x8d, 0xf7, 0x08, 0xbc, 0x1c, 0x99, 0xf5, 0xe6,
- 0x0e, 0x51, 0xb4, 0x2a, 0x52, 0x1b, 0x35, 0xd3, 0xb6, 0x9a,
- 0x22, // negative(2) y
- // byte(32)
- 0x58, 0x20, 0xde, 0x7b, 0x7d, 0x6c, 0xa5, 0x64, 0xe7, 0x0e, 0xa3, 0x21,
- 0xa4, 0xd5, 0xd9, 0x6e, 0xa0, 0x0e, 0xf0, 0xe2, 0xdb, 0x89, 0xdd, 0x61,
- 0xd4, 0x89, 0x4c, 0x15, 0xac, 0x58, 0x5b, 0xd2, 0x36, 0x84,
- // clang-format on
- };
- const auto application_parameter =
- base::make_span(test_data::kApplicationParameter)
- .subspan<0, kRpIdHashLength>();
- // Starting signature counter value set by example 4 of the CTAP spec. The
- // signature counter can start at any value but it should never decrease.
- // https://fidoalliance.org/specs/fido-v2.0-rd-20170927/fido-client-to-authenticator-protocol-v2.0-rd-20170927.html
- std::array<uint8_t, kSignCounterLength> signature_counter = {
- {0x00, 0x00, 0x00, 0x0b}};
- auto flag =
- base::strict_cast<uint8_t>(AuthenticatorData::Flag::kTestOfUserPresence) |
- base::strict_cast<uint8_t>(AuthenticatorData::Flag::kAttestation);
- AttestedCredentialData attested_credential_data(
- kTestDeviceAaguid,
- std::array<uint8_t, kCredentialIdLengthLength>{
- {0x00, 0x10}} /* credential_id_length */,
- fido_parsing_utils::Materialize(
- test_data::kCtap2MakeCredentialCredentialId),
- std::make_unique<PublicKey>(
- static_cast<int32_t>(CoseAlgorithmIdentifier::kEs256),
- kCoseEncodedPublicKey, absl::nullopt));
- AuthenticatorData authenticator_data(application_parameter, flag,
- signature_counter,
- std::move(attested_credential_data));
- cbor::Value::MapValue attestation_map;
- attestation_map.emplace("alg", -7);
- attestation_map.emplace("sig", fido_parsing_utils::Materialize(
- test_data::kCtap2MakeCredentialSignature));
- cbor::Value::ArrayValue certificate_chain;
- certificate_chain.emplace_back(fido_parsing_utils::Materialize(
- test_data::kCtap2MakeCredentialCertificate));
- attestation_map.emplace("x5c", std::move(certificate_chain));
- AuthenticatorMakeCredentialResponse response(
- FidoTransportProtocol::kUsbHumanInterfaceDevice,
- AttestationObject(
- std::move(authenticator_data),
- std::make_unique<OpaqueAttestationStatement>(
- "packed", cbor::Value(std::move(attestation_map)))));
- EXPECT_THAT(
- AsCTAPStyleCBORBytes(response),
- ::testing::ElementsAreArray(
- base::make_span(test_data::kTestMakeCredentialResponse).subspan(1)));
- }
- } // namespace device
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