From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: linux-efi@vger.kernel.org, linux-crypto@vger.kernel.org,
patches@lists.linux.dev, linux-kernel@vger.kernel.org,
ardb@kernel.org
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: [PATCH v3 0/5] Use EFI variables for random seed
Date: Tue, 22 Nov 2022 03:03:59 +0100 [thread overview]
Message-ID: <20221122020404.3476063-1-Jason@zx2c4.com> (raw)
EFI has a rather unique benefit that it has access to some limited
non-volatile storage, where the kernel can store a random seed. This
series wires that up, with EFISTUB reading the seed and passing it to
the kernel, and with the kernel writing a new seed when the RNG is
initialized.
Patches 1 and 2 are to go through Ard's EFI tree, while patches 3, 4,
and 5 are to go through my RNG tree.
Jason A. Donenfeld (5):
efi: vars: prohibit reading random seed variables
efi: stub: use random seed from EFI variable
random: add back async readiness notifier
vsprintf: initialize siphash key using notifier
efi: random: refresh non-volatile random seed when RNG is initialized
drivers/char/random.c | 22 +++++++++++
drivers/firmware/efi/efi.c | 19 +++++++++
drivers/firmware/efi/libstub/random.c | 55 +++++++++++++++++++++------
fs/efivarfs/inode.c | 4 ++
fs/efivarfs/super.c | 3 ++
include/linux/random.h | 1 +
lib/vsprintf.c | 14 +++----
7 files changed, 97 insertions(+), 21 deletions(-)
--
2.38.1
next reply other threads:[~2022-11-22 2:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 2:03 Jason A. Donenfeld [this message]
2022-11-22 2:04 ` [PATCH v3 1/5] efi: vars: prohibit reading random seed variables Jason A. Donenfeld
2022-11-27 21:00 ` Matthew Garrett
2022-11-28 1:10 ` Jason A. Donenfeld
2022-11-22 2:04 ` [PATCH v3 2/5] efi: stub: use random seed from EFI variable Jason A. Donenfeld
2022-11-27 21:12 ` Matthew Garrett
2022-11-28 1:12 ` Jason A. Donenfeld
2022-11-28 1:35 ` Matthew Garrett
2022-11-22 2:04 ` [PATCH v3 3/5] random: add back async readiness notifier Jason A. Donenfeld
2022-11-22 2:04 ` [PATCH v3 4/5] vsprintf: initialize siphash key using notifier Jason A. Donenfeld
2022-11-22 2:04 ` [PATCH v3 5/5] efi: random: refresh non-volatile random seed when RNG is initialized Jason A. Donenfeld
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