linux-kernel - Re: [PATCH] random: addu a config option to trust the CPU's hwrng

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Message-ID: <CACXcFm=URq_UnqdeEUAV0i6DSkvhE8VZW0KYcgQ=7601q_5NnQ@mail.gmail.com>
Date:   Wed, 18 Jul 2018 16:22:35 -0400
From:   Sandy Harris <sandyinchina@...il.com>
To:     "Theodore Y. Ts'o" <tytso@....edu>,
        Sandy Harris <sandyinchina@...il.com>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        Linux Kernel Developers List <linux-kernel@...r.kernel.org>,
        labbott@...hat.com
Subject: Re: [PATCH] random: addu a config option to trust the CPU's hwrng

Theodore Y. Ts'o <tytso@....edu> wrote:

>  For those people who are super paranoid and want a "true
> random number generator" (and the meaning of that is hazy) because a
> CRNG is Not Enough, my recommendation these days is that they get
> something like an open hardware RNG solution, such as ChaosKey from
> Altus Metrum[1].
>
> [1] https://altusmetrum.org/ChaosKey/

Yes & one of those can also solve any difficulty with random(4) at
startup. Another alternative, perhaps easier on some systems, is
Denker's Turbid trng:
https://www.av8n.com/turbid/paper/turbid.htm