Re: [Opensc-devel] [minidriver] container naming convention

[Vincent Le T. <vin...@my...>]

Caching the Windows container seems to be more difficult than I thought.

Indeed, when a key is generated, the Windows GUID is saved to the key
reference when calling: sc_pkcs15init_generate_key
https://github.com/OpenSC/OpenSC/blob/5dd806815de8ee56c4458a6a00ec7404aa6241b8/src/pkcs15init/pkcs15-lib.c#L1295-L1303

Then this Windows GUID is returned in each further calls to
sc_pkcs15_get_object_guid with this key, the function used to return the
guid in further minidriver load
https://github.com/OpenSC/OpenSC/blob/5944915e0ef8d8af73c5c41deb9f12c6d35b80c0/src/libopensc/pkcs15.c#L2721-L2728

=> my attempt to do caching on the minidriver source code only is useless

I've also discovered than you can overwrite the container name using a
special file stored on the card (function
md_pkcs15_update_container_from_do)


I'll need to:
- extend the caching in pkcs15-lib.c / pkcs15.c from a key context to a
process context
- add the same code to the save key code (only the key generation does
caching)

Vincent