/*
* Copyright 2014 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.
*/
#define LOG_TAG "TrustyKeymaster"
#include <assert.h>
#include <errno.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <algorithm>
#include <type_traits>
#include <hardware/keymaster2.h>
#include <keymaster/authorization_set.h>
#include <log/log.h>
#include "keymaster_ipc.h"
#include "trusty_keymaster_device.h"
#include "trusty_keymaster_ipc.h"
#define MY_PAGE_SIZE (PAGE_SIZE * 128)
const uint32_t RECV_BUF_SIZE = MY_PAGE_SIZE;
const uint32_t SEND_BUF_SIZE = (MY_PAGE_SIZE - sizeof(struct keymaster_message) - 16 /* tipc header */);
const size_t kMaximumAttestationChallengeLength = 128;
const size_t kMaximumFinishInputLength = 2048 * 1024;
namespace keymaster {
static keymaster_error_t translate_error(int err) {
switch (err) {
case 0:
return KM_ERROR_OK;
case -EPERM:
case -EACCES:
return KM_ERROR_SECURE_HW_ACCESS_DENIED;
case -ECANCELED:
return KM_ERROR_OPERATION_CANCELLED;
case -ENODEV:
return KM_ERROR_UNIMPLEMENTED;
case -ENOMEM:
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
case -EBUSY:
return KM_ERROR_SECURE_HW_BUSY;
case -EIO:
return KM_ERROR_SECURE_HW_COMMUNICATION_FAILED;
case -EOVERFLOW:
return KM_ERROR_INVALID_INPUT_LENGTH;
default:
return KM_ERROR_UNKNOWN_ERROR;
}
}
TrustyKeymasterDevice::TrustyKeymasterDevice(const hw_module_t* module) {
static_assert(std::is_standard_layout<TrustyKeymasterDevice>::value,
"TrustyKeymasterDevice must be standard layout");
static_assert(offsetof(TrustyKeymasterDevice, device_) == 0,
"device_ must be the first member of TrustyKeymasterDevice");
static_assert(offsetof(TrustyKeymasterDevice, device_.common) == 0,
"common must be the first member of keymaster2_device");
ALOGI("Creating device");
ALOGD("Device address: %p", this);
device_ = {};
device_.common.tag = HARDWARE_DEVICE_TAG;
device_.common.version = 1;
device_.common.module = const_cast<hw_module_t*>(module);
device_.common.close = close_device;
device_.flags = KEYMASTER_SUPPORTS_EC | KEYMASTER_BLOBS_ARE_STANDALONE ;
device_.configure = configure;
device_.add_rng_entropy = add_rng_entropy;
device_.generate_key = generate_key;
device_.get_key_characteristics = get_key_characteristics;
device_.import_key = import_key;
device_.export_key = export_key;
device_.attest_key = attest_key;
device_.upgrade_key = upgrade_key;
device_.delete_key = nullptr;
device_.delete_all_keys = nullptr;
device_.begin = begin;
device_.update = update;
device_.finish = finish;
device_.abort = abort;
GetVersionRequest version_request;
GetVersionResponse version_response;
error_ = Send(KM_GET_VERSION, version_request, &version_response);
if (error_ == KM_ERROR_INVALID_ARGUMENT || error_ == KM_ERROR_UNIMPLEMENTED) {
ALOGE("\"Bad parameters\" error on GetVersion call. Version 0 is not supported.");
error_ = KM_ERROR_VERSION_MISMATCH;
return;
}
message_version_ = MessageVersion(version_response.major_ver, version_response.minor_ver,
version_response.subminor_ver);
if (message_version_ < 0) {
// Can't translate version? Keymaster implementation must be newer.
ALOGE("Keymaster version %d.%d.%d not supported.", version_response.major_ver,
version_response.minor_ver, version_response.subminor_ver);
error_ = KM_ERROR_VERSION_MISMATCH;
}
}
TrustyKeymasterDevice::~TrustyKeymasterDevice() {
trusty_keymaster_disconnect();
}
namespace {
// Allocates a new buffer with malloc and copies the contents of |buffer| to it. Caller takes
// ownership of the returned buffer.
uint8_t* DuplicateBuffer(const uint8_t* buffer, size_t size) {
uint8_t* tmp = reinterpret_cast<uint8_t*>(malloc(size));
if (tmp) {
memcpy(tmp, buffer, size);
}
return tmp;
}
template <typename RequestType>
void AddClientAndAppData(const keymaster_blob_t* client_id, const keymaster_blob_t* app_data,
RequestType* request) {
request->additional_params.Clear();
if (client_id) {
request->additional_params.push_back(TAG_APPLICATION_ID, *client_id);
}
if (app_data) {
request->additional_params.push_back(TAG_APPLICATION_DATA, *app_data);
}
}
} // unnamed namespace
keymaster_error_t TrustyKeymasterDevice::configure(const keymaster_key_param_set_t* params) {
ALOGD("Device received configure\n");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!params) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
AuthorizationSet params_copy(*params);
ConfigureRequest request;
if (!params_copy.GetTagValue(TAG_OS_VERSION, &request.os_version) ||
!params_copy.GetTagValue(TAG_OS_PATCHLEVEL, &request.os_patchlevel)) {
ALOGD("Configuration parameters must contain OS version and patch level");
return KM_ERROR_INVALID_ARGUMENT;
}
ConfigureResponse response;
keymaster_error_t err = Send(KM_CONFIGURE, request, &response);
return err;
}
keymaster_error_t TrustyKeymasterDevice::add_rng_entropy(const uint8_t* data, size_t data_length) {
ALOGD("Device received add_rng_entropy");
if (error_ != KM_ERROR_OK) {
return error_;
}
AddEntropyRequest request;
request.random_data.Reinitialize(data, data_length);
AddEntropyResponse response;
return Send(KM_ADD_RNG_ENTROPY, request, &response);
}
keymaster_error_t TrustyKeymasterDevice::generate_key(
const keymaster_key_param_set_t* params, keymaster_key_blob_t* key_blob,
keymaster_key_characteristics_t* characteristics) {
ALOGD("Device received generate_key");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!params) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!key_blob) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
GenerateKeyRequest request(message_version_);
request.key_description.Reinitialize(*params);
//request.key_description.push_back(TAG_CREATION_DATETIME, java_time(time(NULL)));
GenerateKeyResponse response(message_version_);
keymaster_error_t err = Send(KM_GENERATE_KEY, request, &response);
if (err != KM_ERROR_OK) {
ALOGD("Device generate_key return error code %d", err);
return err;
}
key_blob->key_material_size = response.key_blob.key_material_size;
key_blob->key_material =
DuplicateBuffer(response.key_blob.key_material, response.key_blob.key_material_size);
if (!key_blob->key_material) {
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
}
if (characteristics) {
response.enforced.CopyToParamSet(&characteristics->hw_enforced);
response.unenforced.CopyToParamSet(&characteristics->sw_enforced);
}
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::get_key_characteristics(
const keymaster_key_blob_t* key_blob, const keymaster_blob_t* client_id,
const keymaster_blob_t* app_data, keymaster_key_characteristics_t* characteristics) {
ALOGD("Device received get_key_characteristics");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!key_blob || !key_blob->key_material) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!characteristics) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
GetKeyCharacteristicsRequest request;
request.SetKeyMaterial(*key_blob);
AddClientAndAppData(client_id, app_data, &request);
GetKeyCharacteristicsResponse response;
keymaster_error_t err = Send(KM_GET_KEY_CHARACTERISTICS, request, &response);
if (err != KM_ERROR_OK) {
return err;
}
response.enforced.CopyToParamSet(&characteristics->hw_enforced);
response.unenforced.CopyToParamSet(&characteristics->sw_enforced);
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::import_key(
const keymaster_key_param_set_t* params, keymaster_key_format_t key_format,
const keymaster_blob_t* key_data, keymaster_key_blob_t* key_blob,
keymaster_key_characteristics_t* characteristics) {
ALOGD("Device received import_key");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!params || !key_data) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!key_blob) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
ImportKeyRequest request(message_version_);
request.key_description.Reinitialize(*params);
//request.key_description.push_back(TAG_CREATION_DATETIME, java_time(time(NULL)));
request.key_format = key_format;
request.SetKeyMaterial(key_data->data, key_data->data_length);
ImportKeyResponse response(message_version_);
keymaster_error_t err = Send(KM_IMPORT_KEY, request, &response);
if (err != KM_ERROR_OK) {
return err;
}
key_blob->key_material_size = response.key_blob.key_material_size;
key_blob->key_material =
DuplicateBuffer(response.key_blob.key_material, response.key_blob.key_material_size);
if (!key_blob->key_material) {
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
}
if (characteristics) {
response.enforced.CopyToParamSet(&characteristics->hw_enforced);
response.unenforced.CopyToParamSet(&characteristics->sw_enforced);
}
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::export_key(keymaster_key_format_t export_format,
const keymaster_key_blob_t* key_to_export,
const keymaster_blob_t* client_id,
const keymaster_blob_t* app_data,
keymaster_blob_t* export_data) {
ALOGD("Device received export_key");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!key_to_export || !key_to_export->key_material) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!export_data) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
export_data->data = nullptr;
export_data->data_length = 0;
ExportKeyRequest request(message_version_);
request.key_format = export_format;
request.SetKeyMaterial(*key_to_export);
AddClientAndAppData(client_id, app_data, &request);
ExportKeyResponse response(message_version_);
keymaster_error_t err = Send(KM_EXPORT_KEY, request, &response);
if (err != KM_ERROR_OK) {
return err;
}
export_data->data_length = response.key_data_length;
export_data->data = DuplicateBuffer(response.key_data, response.key_data_length);
if (!export_data->data) {
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
}
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::attest_key(const keymaster_key_blob_t* key_to_attest,
const keymaster_key_param_set_t* attest_params,
keymaster_cert_chain_t* cert_chain) {
ALOGD("Device received attest_key");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!key_to_attest || !attest_params) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!cert_chain) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
cert_chain->entry_count = 0;
cert_chain->entries = nullptr;
AttestKeyRequest request;
request.SetKeyMaterial(*key_to_attest);
request.attest_params.Reinitialize(*attest_params);
keymaster_blob_t attestation_challenge = {};
request.attest_params.GetTagValue(TAG_ATTESTATION_CHALLENGE, &attestation_challenge);
if (attestation_challenge.data_length > kMaximumAttestationChallengeLength) {
ALOGE("%zu-byte attestation challenge; only %zu bytes allowed",
attestation_challenge.data_length, kMaximumAttestationChallengeLength);
return KM_ERROR_INVALID_INPUT_LENGTH;
}
AttestKeyResponse response;
keymaster_error_t err = Send(KM_ATTEST_KEY, request, &response);
if (err != KM_ERROR_OK) {
return err;
}
// Allocate and clear storage for cert_chain.
keymaster_cert_chain_t& rsp_chain = response.certificate_chain;
cert_chain->entries = reinterpret_cast<keymaster_blob_t*>(
malloc(rsp_chain.entry_count * sizeof(*cert_chain->entries)));
if (!cert_chain->entries) {
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
}
cert_chain->entry_count = rsp_chain.entry_count;
for (keymaster_blob_t& entry : array_range(cert_chain->entries, cert_chain->entry_count)) {
entry = {};
}
// Copy cert_chain contents
size_t i = 0;
for (keymaster_blob_t& entry : array_range(rsp_chain.entries, rsp_chain.entry_count)) {
cert_chain->entries[i].data = DuplicateBuffer(entry.data, entry.data_length);
if (!cert_chain->entries[i].data) {
keymaster_free_cert_chain(cert_chain);
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
}
cert_chain->entries[i].data_length = entry.data_length;
++i;
}
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::upgrade_key(const keymaster_key_blob_t* key_to_upgrade,
const keymaster_key_param_set_t* upgrade_params,
keymaster_key_blob_t* upgraded_key) {
ALOGD("Device received upgrade_key");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!key_to_upgrade || !upgrade_params) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!upgraded_key) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
UpgradeKeyRequest request;
request.SetKeyMaterial(*key_to_upgrade);
request.upgrade_params.Reinitialize(*upgrade_params);
UpgradeKeyResponse response;
keymaster_error_t err = Send(KM_UPGRADE_KEY, request, &response);
if (err != KM_ERROR_OK) {
return err;
}
upgraded_key->key_material_size = response.upgraded_key.key_material_size;
upgraded_key->key_material = DuplicateBuffer(response.upgraded_key.key_material,
response.upgraded_key.key_material_size);
if (!upgraded_key->key_material) {
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
}
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::begin(keymaster_purpose_t purpose,
const keymaster_key_blob_t* key,
const keymaster_key_param_set_t* in_params,
keymaster_key_param_set_t* out_params,
keymaster_operation_handle_t* operation_handle) {
ALOGD("Device received begin");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!key || !key->key_material) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!operation_handle) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
if (out_params) {
*out_params = {};
}
BeginOperationRequest request;
request.purpose = purpose;
request.SetKeyMaterial(*key);
request.additional_params.Reinitialize(*in_params);
BeginOperationResponse response;
keymaster_error_t err = Send(KM_BEGIN_OPERATION, request, &response);
if (err != KM_ERROR_OK) {
return err;
}
if (response.output_params.size() > 0) {
if (out_params) {
response.output_params.CopyToParamSet(out_params);
} else {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
}
*operation_handle = response.op_handle;
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::update(keymaster_operation_handle_t operation_handle,
const keymaster_key_param_set_t* in_params,
const keymaster_blob_t* input,
size_t* input_consumed,
keymaster_key_param_set_t* out_params,
keymaster_blob_t* output) {
ALOGD("Device received update");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (!input) {
return KM_ERROR_UNEXPECTED_NULL_POINTER;
}
if (!input_consumed) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
if (out_params) {
*out_params = {};
}
if (output) {
*output = {};
}
UpdateOperationRequest request;
request.op_handle = operation_handle;
if (in_params) {
request.additional_params.Reinitialize(*in_params);
}
if (input && input->data_length > 0) {
size_t max_input_size = SEND_BUF_SIZE - request.SerializedSize();
request.input.Reinitialize(input->data, std::min(input->data_length, max_input_size));
}
UpdateOperationResponse response;
keymaster_error_t err = Send(KM_UPDATE_OPERATION, request, &response);
if (err != KM_ERROR_OK) {
return err;
}
if (response.output_params.size() > 0) {
if (out_params) {
response.output_params.CopyToParamSet(out_params);
} else {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
}
*input_consumed = response.input_consumed;
if (output) {
output->data_length = response.output.available_read();
output->data = DuplicateBuffer(response.output.peek_read(), output->data_length);
if (!output->data) {
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
}
} else if (response.output.available_read() > 0) {
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::finish(keymaster_operation_handle_t operation_handle,
const keymaster_key_param_set_t* in_params,
const keymaster_blob_t* input,
const keymaster_blob_t* signature,
keymaster_key_param_set_t* out_params,
keymaster_blob_t* output) {
ALOGE("Device received finish");
if (error_ != KM_ERROR_OK) {
return error_;
}
if (input && input->data_length > kMaximumFinishInputLength) {
ALOGE("here %s at %d", __func__, __LINE__);
return KM_ERROR_INVALID_ARGUMENT;
}
if (out_params) {
*out_params = {};
}
if (output) {
*output = {};
}
FinishOperationRequest request;
request.op_handle = operation_handle;
if (signature && signature->data && signature->data_length > 0) {
request.signature.Reinitialize(signature->data, signature->data_length);
ALOGE("here %s at %d signature length %d", __func__, __LINE__,
(int)(signature->data_length));
}
if (input && input->data && input->data_length) {
request.input.Reinitialize(input->data, input->data_length);
ALOGE("here %s at %d input data length %d", __func__, __LINE__,
(int)(input->data_length));
}
if (in_params) {
request.additional_params.Reinitialize(*in_params);
}
FinishOperationResponse response;
keymaster_error_t err = Send(KM_FINISH_OPERATION, request, &response);
if (err != KM_ERROR_OK) {
ALOGE("here %s at %d", __func__, __LINE__);
return err;
}
if (response.output_params.size() > 0) {
if (out_params) {
response.output_params.CopyToParamSet(out_params);
} else {
ALOGE("here %s at %d", __func__, __LINE__);
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
}
if (output) {
output->data_length = response.output.available_read();
output->data = DuplicateBuffer(response.output.peek_read(), output->data_length);
if (!output->data) {
ALOGE("here %s at %d", __func__, __LINE__);
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
} else {
ALOGE("here %s at %d output data length %d", __func__, __LINE__,
(int)(output->data_length));
}
} else if (response.output.available_read() > 0) {
ALOGE("here %s at %d", __func__, __LINE__);
return KM_ERROR_OUTPUT_PARAMETER_NULL;
}
ALOGE("OK here %s at %d", __func__, __LINE__);
return KM_ERROR_OK;
}
keymaster_error_t TrustyKeymasterDevice::abort(keymaster_operation_handle_t operation_handle) {
ALOGD("Device received abort");
if (error_ != KM_ERROR_OK) {
return error_;
}
AbortOperationRequest request;
request.op_handle = operation_handle;
AbortOperationResponse response;
return Send(KM_ABORT_OPERATION, request, &response);
}
hw_device_t* TrustyKeymasterDevice::hw_device() {
return &device_.common;
}
static inline TrustyKeymasterDevice* convert_device(const keymaster2_device_t* dev) {
return reinterpret_cast<TrustyKeymasterDevice*>(const_cast<keymaster2_device_t*>(dev));
}
/* static */
int TrustyKeymasterDevice::close_device(hw_device_t* dev) {
delete reinterpret_cast<TrustyKeymasterDevice*>(dev);
return 0;
}
/* static */
keymaster_error_t TrustyKeymasterDevice::configure(const keymaster2_device_t* dev,
const keymaster_key_param_set_t* params) {
return convert_device(dev)->configure(params);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::add_rng_entropy(const keymaster2_device_t* dev,
const uint8_t* data, size_t data_length) {
return convert_device(dev)->add_rng_entropy(data, data_length);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::generate_key(
const keymaster2_device_t* dev, const keymaster_key_param_set_t* params,
keymaster_key_blob_t* key_blob, keymaster_key_characteristics_t* characteristics) {
return convert_device(dev)->generate_key(params, key_blob, characteristics);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::get_key_characteristics(
const keymaster2_device_t* dev, const keymaster_key_blob_t* key_blob,
const keymaster_blob_t* client_id, const keymaster_blob_t* app_data,
keymaster_key_characteristics_t* characteristics) {
return convert_device(dev)->get_key_characteristics(key_blob, client_id, app_data,
characteristics);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::import_key(
const keymaster2_device_t* dev, const keymaster_key_param_set_t* params,
keymaster_key_format_t key_format, const keymaster_blob_t* key_data,
keymaster_key_blob_t* key_blob, keymaster_key_characteristics_t* characteristics) {
return convert_device(dev)->import_key(params, key_format, key_data, key_blob, characteristics);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::export_key(const keymaster2_device_t* dev,
keymaster_key_format_t export_format,
const keymaster_key_blob_t* key_to_export,
const keymaster_blob_t* client_id,
const keymaster_blob_t* app_data,
keymaster_blob_t* export_data) {
return convert_device(dev)->export_key(export_format, key_to_export, client_id, app_data,
export_data);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::attest_key(const keymaster2_device_t* dev,
const keymaster_key_blob_t* key_to_attest,
const keymaster_key_param_set_t* attest_params,
keymaster_cert_chain_t* cert_chain) {
return convert_device(dev)->attest_key(key_to_attest, attest_params, cert_chain);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::upgrade_key(const keymaster2_device_t* dev,
const keymaster_key_blob_t* key_to_upgrade,
const keymaster_key_param_set_t* upgrade_params,
keymaster_key_blob_t* upgraded_key) {
return convert_device(dev)->upgrade_key(key_to_upgrade, upgrade_params, upgraded_key);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::begin(const keymaster2_device_t* dev,
keymaster_purpose_t purpose,
const keymaster_key_blob_t* key,
const keymaster_key_param_set_t* in_params,
keymaster_key_param_set_t* out_params,
keymaster_operation_handle_t* operation_handle) {
return convert_device(dev)->begin(purpose, key, in_params, out_params, operation_handle);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::update(
const keymaster2_device_t* dev, keymaster_operation_handle_t operation_handle,
const keymaster_key_param_set_t* in_params, const keymaster_blob_t* input,
size_t* input_consumed, keymaster_key_param_set_t* out_params, keymaster_blob_t* output) {
return convert_device(dev)->update(operation_handle, in_params, input, input_consumed,
out_params, output);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::finish(const keymaster2_device_t* dev,
keymaster_operation_handle_t operation_handle,
const keymaster_key_param_set_t* in_params,
const keymaster_blob_t* input,
const keymaster_blob_t* signature,
keymaster_key_param_set_t* out_params,
keymaster_blob_t* output) {
return convert_device(dev)->finish(operation_handle, in_params, input, signature, out_params,
output);
}
/* static */
keymaster_error_t TrustyKeymasterDevice::abort(const keymaster2_device_t* dev,
keymaster_operation_handle_t operation_handle) {
return convert_device(dev)->abort(operation_handle);
}
keymaster_error_t TrustyKeymasterDevice::Send(uint32_t command, const Serializable& req,
KeymasterResponse* rsp) {
uint32_t req_size = req.SerializedSize();
if (req_size > SEND_BUF_SIZE) {
return KM_ERROR_MEMORY_ALLOCATION_FAILED;
}
uint8_t send_buf[SEND_BUF_SIZE];
Eraser send_buf_eraser(send_buf, SEND_BUF_SIZE);
req.Serialize(send_buf, send_buf + req_size);
// Send it
uint8_t recv_buf[RECV_BUF_SIZE];
Eraser recv_buf_eraser(recv_buf, RECV_BUF_SIZE);
uint32_t rsp_size = RECV_BUF_SIZE;
// ALOGE("Sending %d byte request\n", (int)req.SerializedSize());
int rc = trusty_keymaster_call(command, send_buf, req_size, recv_buf, &rsp_size);
if (rc < 0) {
ALOGE("tipc error: %d\n", rc);
return translate_error(rc);
} else {
ALOGE("Received %d byte response\n", (int)rsp_size);
}
const uint8_t* p = recv_buf;
if (!rsp->Deserialize(&p, p + rsp_size)) {
ALOGE("Error deserializing response of size %d\n", (int)rsp_size);
return KM_ERROR_UNKNOWN_ERROR;
} else if (rsp->error != KM_ERROR_OK) {
ALOGE("Error: Response of size %d contained error code %d\n", (int)rsp_size, (int)rsp->error);
return rsp->error;
}
return rsp->error;
}
} // namespace keymaster