Hi everyone,
I am writing Linux driver to support TRNG hardware module for Xilinx SoC. I am seeing two frameworks - crypto framework and hw_random (char driver) which can be used to write driver for TRNG. Can someone please educate me on what criteria is to be used to decide which framework to use for TRNG (Crypto framework / hw_random char driver)?
Regards,
Mohan
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Am Montag, 30. Dezember 2019, 09:40:30 CET schrieb Mohan Marutirao Dhanawade:
Hi Mohan,
> Hi everyone,
>
> I am writing Linux driver to support TRNG hardware module for Xilinx SoC. I
> am seeing two frameworks - crypto framework and hw_random (char driver)
> which can be used to write driver for TRNG. Can someone please educate me
> on what criteria is to be used to decide which framework to use for TRNG
> (Crypto framework / hw_random char driver)?
The crypto API RNG framework is used to implement deterministic RNGs which in
turn need seending from a noise source.
The HW RNG framework is used for accessing RNGs which have their own noise
source and provide random data with appropriate entropy. These RNGs are
available via /dev/hwrng.
>
> Regards,
> Mohan
> This email and any attachments are intended for the sole use of the named
> recipient(s) and contain(s) confidential information that may be
> proprietary, privileged or copyrighted under applicable law. If you are not
> the intended recipient, do not read, copy, or forward this email message or
> any attachments. Delete this email message and any attachments immediately.
Ciao
Stephan