[PATCH 1/5] Renaming weak prng invocations - prandom_bytes_state, prandom_u32_state

Andy Shevchenko andriy.shevchenko at linux.intel.com
Mon Dec 12 00:35:53 PST 2022


On Mon, Dec 12, 2022 at 12:16:04AM +0200, david.keisarschm at mail.huji.ac.il wrote:
> From: David <david.keisarschm at mail.huji.ac.il>
> 
> Since the two functions
>  prandom_byte_state and prandom_u32_state
>  use the weak prng prandom_u32,
>  we added the prefix predictable_rng,
>  to their signatures so it is clear they are weak.

It's fancy indentation.

...

>  		/* Fisher-Yates shuffle */
>  		for (i = count - 1; i > 0; i--) {
> -			rand = prandom_u32_state(&state.rnd_state);
> +			rand = predictable_rng_prandom_u32_state(&state.rnd_state);

Isn't it too many "random":s encoded in the name?

I would leave either "rng" or "[p]random".

>  			rand %= (i + 1);
>  			swap_free_obj(slab, i, rand);
>  		}

-- 
With Best Regards,
Andy Shevchenko





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