Secure storage issue

Legato Application Framework
1

Hi,

I’m have an issue with secure storage after migrating to vscode and upgrading to a newer firmware version on a Sierra Wireless WP77xx modem.

I get a build error where some defines in the generated secstore interface are not set properly:

[…]/client/le_secstore_interface.h:199:0: error: “LE_SECSTORE_MAX_NAME_BYTES” redefined [-Werror]
#define LE_SECSTORE_MAX_NAME_BYTES LE_SECSTORE_MAX_NAME_BYTES

The same goes for LE_SECSTORE_MAX_NAME_SIZE and LE_SECSTORE_MAX_ITEM_SIZE. When i look into the linked secstore interface then i see the following weird (re)defines:

#define LE_SECSTORE_MAX_NAME_SIZE LE_SECSTORE_MAX_NAME_SIZE
#define LE_SECSTORE_MAX_NAME_BYTES LE_SECSTORE_MAX_NAME_BYTES
#define LE_SECSTORE_MAX_ITEM_SIZE LE_SECSTORE_MAX_ITEM_SIZE

I have compared this generated secstore interface with the interface generated by developer studio. There I see that those defines are correct:

#define LE_SECSTORE_MAX_NAME_SIZE 255
#define LE_SECSTORE_MAX_NAME_BYTES 256
#define LE_SECSTORE_MAX_ITEM_SIZE 8192

I have tried to change the defined manually, this solves the build issue but the secstore is still not working properly.

Whenever I want to use the (global) secure storage I get errors and the data could not be retrieved.

Jul 20 16:43:29 | TestComponentExe[13044]/framework T=action | secStoreGlobal_client.c DoConnectService() 242
Jul 20 18:43:29 | secStore[13187]/le_pa_tz T=main | trustZone.c TzIoctl() 75 | ioctl /dev/tzdev failed, ret=-1
Jul 20 18:43:29 | secStore[13187]/le_pa_tz T=main | trustZone.c SendTzRequest() 123 | TzIoctl ret=-1
Jul 20 18:43:29 | secStore[13187]/le_pa_tz T=main | trustZone.c tz_DecryptData() 345 | Error decrypting string.
Jul 20 18:43:29 | secStore[13187]/le_pa_secStoreTz T=main | pa_secStoreTz.c Read() 784 | Unable to decrypt data [/global/testdata].
Jul 20 16:43:29 | TestComponentExe[13044]/TestComponent T=action | test.cpp perform_read() 54 | Result -6
Jul 20 16:43:29 | TestComponentExe[13044]/framework T=action | secStoreGlobal_client.c secStoreGlobal_DisconnectService() 43

It is just a simple secstore read (secStoreGlobal_Read), which has worked before in an older firmware version.

Information
Device: WP7700
Firmware Version: SWI9X06Y_02.32.02.00 c2e98c jenkins 2019/08/30 07:28:21

Hope that someone could help me with this issue.

Bart

2

I don’t see problem with WP7702 on R12 with legato version 20.04.
You can try my attached hello5.rar
hello5.rar (180.8 KB)

3

You are right, the sample worked.
The issue which I had was with the binding between two apps (each with their own binding name). Because one of the binding names was the same as the API name (only in lowercase), there was no binding error but for some reason it got confused and did not generated the interrfaces correctly (and the defines were somehow not set properly), which was the reason the build failed.