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/*
* Copyright 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <cutils/log.h>
#include <keymaster/android_keymaster_messages.h>
#include <keymaster/keymaster_configuration.h>
#include <trusty_keymaster/TrustyKeymaster.h>
#include <trusty_keymaster/ipc/trusty_keymaster_ipc.h>
namespace keymaster {
int TrustyKeymaster::Initialize() {
int err;
err = trusty_keymaster_connect();
if (err) {
ALOGE("Failed to connect to trusty keymaster %d", err);
return err;
}
ConfigureRequest req;
req.os_version = GetOsVersion();
req.os_patchlevel = GetOsPatchlevel();
ConfigureResponse rsp;
Configure(req, &rsp);
if (rsp.error != KM_ERROR_OK) {
ALOGE("Failed to configure keymaster %d", rsp.error);
return -1;
}
return 0;
}
TrustyKeymaster::TrustyKeymaster() {}
TrustyKeymaster::~TrustyKeymaster() {
trusty_keymaster_disconnect();
}
static void ForwardCommand(enum keymaster_command command, const Serializable& req,
KeymasterResponse* rsp) {
keymaster_error_t err;
err = trusty_keymaster_send(command, req, rsp);
if (err != KM_ERROR_OK) {
ALOGE("Failed to send cmd %d err: %d", command, err);
rsp->error = err;
}
}
void TrustyKeymaster::GetVersion(const GetVersionRequest& request, GetVersionResponse* response) {
ForwardCommand(KM_GET_VERSION, request, response);
}
void TrustyKeymaster::SupportedAlgorithms(const SupportedAlgorithmsRequest& request,
SupportedAlgorithmsResponse* response) {
ForwardCommand(KM_GET_SUPPORTED_ALGORITHMS, request, response);
}
void TrustyKeymaster::SupportedBlockModes(const SupportedBlockModesRequest& request,
SupportedBlockModesResponse* response) {
ForwardCommand(KM_GET_SUPPORTED_BLOCK_MODES, request, response);
}
void TrustyKeymaster::SupportedPaddingModes(const SupportedPaddingModesRequest& request,
SupportedPaddingModesResponse* response) {
ForwardCommand(KM_GET_SUPPORTED_PADDING_MODES, request, response);
}
void TrustyKeymaster::SupportedDigests(const SupportedDigestsRequest& request,
SupportedDigestsResponse* response) {
ForwardCommand(KM_GET_SUPPORTED_DIGESTS, request, response);
}
void TrustyKeymaster::SupportedImportFormats(const SupportedImportFormatsRequest& request,
SupportedImportFormatsResponse* response) {
ForwardCommand(KM_GET_SUPPORTED_IMPORT_FORMATS, request, response);
}
void TrustyKeymaster::SupportedExportFormats(const SupportedExportFormatsRequest& request,
SupportedExportFormatsResponse* response) {
ForwardCommand(KM_GET_SUPPORTED_EXPORT_FORMATS, request, response);
}
void TrustyKeymaster::AddRngEntropy(const AddEntropyRequest& request,
AddEntropyResponse* response) {
ForwardCommand(KM_ADD_RNG_ENTROPY, request, response);
}
void TrustyKeymaster::Configure(const ConfigureRequest& request, ConfigureResponse* response) {
ForwardCommand(KM_CONFIGURE, request, response);
}
void TrustyKeymaster::GenerateKey(const GenerateKeyRequest& request,
GenerateKeyResponse* response) {
GenerateKeyRequest datedRequest(request.message_version);
datedRequest.key_description = request.key_description;
if (!request.key_description.Contains(TAG_CREATION_DATETIME)) {
datedRequest.key_description.push_back(TAG_CREATION_DATETIME, java_time(time(NULL)));
}
ForwardCommand(KM_GENERATE_KEY, datedRequest, response);
}
void TrustyKeymaster::GetKeyCharacteristics(const GetKeyCharacteristicsRequest& request,
GetKeyCharacteristicsResponse* response) {
ForwardCommand(KM_GET_KEY_CHARACTERISTICS, request, response);
}
void TrustyKeymaster::ImportKey(const ImportKeyRequest& request, ImportKeyResponse* response) {
ForwardCommand(KM_IMPORT_KEY, request, response);
}
void TrustyKeymaster::ImportWrappedKey(const ImportWrappedKeyRequest& request,
ImportWrappedKeyResponse* response) {
ForwardCommand(KM_IMPORT_WRAPPED_KEY, request, response);
}
void TrustyKeymaster::ExportKey(const ExportKeyRequest& request, ExportKeyResponse* response) {
ForwardCommand(KM_EXPORT_KEY, request, response);
}
void TrustyKeymaster::AttestKey(const AttestKeyRequest& request, AttestKeyResponse* response) {
ForwardCommand(KM_ATTEST_KEY, request, response);
}
void TrustyKeymaster::UpgradeKey(const UpgradeKeyRequest& request, UpgradeKeyResponse* response) {
ForwardCommand(KM_UPGRADE_KEY, request, response);
}
void TrustyKeymaster::DeleteKey(const DeleteKeyRequest& request, DeleteKeyResponse* response) {
ForwardCommand(KM_DELETE_KEY, request, response);
}
void TrustyKeymaster::DeleteAllKeys(const DeleteAllKeysRequest& request,
DeleteAllKeysResponse* response) {
ForwardCommand(KM_DELETE_ALL_KEYS, request, response);
}
void TrustyKeymaster::BeginOperation(const BeginOperationRequest& request,
BeginOperationResponse* response) {
ForwardCommand(KM_BEGIN_OPERATION, request, response);
}
void TrustyKeymaster::UpdateOperation(const UpdateOperationRequest& request,
UpdateOperationResponse* response) {
ForwardCommand(KM_UPDATE_OPERATION, request, response);
}
void TrustyKeymaster::FinishOperation(const FinishOperationRequest& request,
FinishOperationResponse* response) {
ForwardCommand(KM_FINISH_OPERATION, request, response);
}
void TrustyKeymaster::AbortOperation(const AbortOperationRequest& request,
AbortOperationResponse* response) {
ForwardCommand(KM_ABORT_OPERATION, request, response);
}
GetHmacSharingParametersResponse TrustyKeymaster::GetHmacSharingParameters() {
// Dummy empty buffer to allow ForwardCommand to have something to serialize
Buffer request;
GetHmacSharingParametersResponse response;
ForwardCommand(KM_GET_HMAC_SHARING_PARAMETERS, request, &response);
return response;
}
ComputeSharedHmacResponse TrustyKeymaster::ComputeSharedHmac(
const ComputeSharedHmacRequest& request) {
ComputeSharedHmacResponse response;
ForwardCommand(KM_COMPUTE_SHARED_HMAC, request, &response);
return response;
}
VerifyAuthorizationResponse TrustyKeymaster::VerifyAuthorization(
const VerifyAuthorizationRequest& request) {
VerifyAuthorizationResponse response;
ForwardCommand(KM_VERIFY_AUTHORIZATION, request, &response);
return response;
}
} // namespace keymaster
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