trusty: keymaster: Implement update (86eb9661) · Commits · e / os / android_system_core

trusty/keymaster/trusty_keymaster_device.cpp

+52 −0

Original line number	Original line	Diff line number	Diff line
	@@ -508,6 +508,58 @@ keymaster_error_t TrustyKeymasterDevice::update(keymaster_operation_handle_t ope
	keymaster_key_param_set_t* out_params,		keymaster_key_param_set_t* out_params,
	keymaster_blob_t* output) {		keymaster_blob_t* output) {
	ALOGD("Device received update");		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;		return KM_ERROR_OK;
	}		}