trusty: keymaster: Implement begin (d7da42c0) · Commits · e / os / android_system_core

trusty/keymaster/trusty_keymaster_device.cpp

+35 −0

Original line number	Diff line number	Diff line
		@@ -463,6 +463,41 @@ keymaster_error_t TrustyKeymasterDevice::begin(keymaster_purpose_t purpose,
		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;
		}