From: Frederick Gotham <cauldwell.thomas@gmail.com>
To: linux-crypto@vger.kernel.org
Subject: Remove PRNG from Linux Kernel
Date: Fri, 8 Nov 2019 15:48:02 -0000 (UTC) [thread overview]
Message-ID: <XnsAB01A0BBA9FB8fgotham@195.159.176.226> (raw)
Has anyone yet removed the random number generator entirely from the Linux
kernel?
I'm currently working on an embedded x86_64 project, and I'm interfacing
witht the TPM2 chip.
There cannot be any software-based psuedo-random number generators on my
device, and so far I've removed three of them:
(1) The built-in PRNG inside OpenSSL
(2) The Intel RDRAND engine inside OpenSSL
(3) The simulator library that goes with the tpm2tss engine for OpenSSL
(tcti-mssim)
The only software-based random-number generator left on my device is inside
the Linux kernel (i.e. the one that feeds /dev/random).
I do realise that there are tools like 'rng-tools' for feeding a hardware
generator into the entropy pool for "/dev/random" -- but this simply isn't
good enough for my project.
I need to remove the PRNG from the Linux kernel and replace it with something
that interfaces directly with the TPM2 chip.
Has this been done before?
next reply other threads:[~2019-11-08 16:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-08 15:48 Frederick Gotham [this message]
2019-11-09 5:03 ` Remove PRNG from Linux Kernel Theodore Y. Ts'o
2019-11-09 6:36 ` Sandy Harris
2019-11-09 13:28 Thomas P. K. Healy
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