Hello Richard, Sumit, On 01.04.21 15:17, Richard Weinberger wrote: > Sumit, > > ----- Ursprüngliche Mail ----- >> Von: "Sumit Garg" <sumit.g...@linaro.org> >> IIUC, this would require support for multiple trusted keys backends at >> runtime but currently the trusted keys subsystem only supports a >> single backend which is selected via kernel module parameter during >> boot. >> >> So the trusted keys framework needs to evolve to support multiple >> trust sources at runtime but I would like to understand the use-cases >> first. IMO, selecting the best trust source available on a platform >> for trusted keys should be a one time operation, so why do we need to >> have other backends available at runtime as well? > > I thought about devices with a TPM-Chip and CAAM. > IMHO allowing only one backend at the same time is a little over simplified.
It is, but I'd rather leave this until it's actually needed. What can be done now is adopting a format for the exported keys that would make this extension seamless in future. Cheers, Ahmad -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
