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From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: "Theodore Ts'o" <tytso@mit.edu>,
	Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	kernel-hardening@lists.openwall.com
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: [PATCH RFC 0/3] get_random_bytes seed blocking
Date: Sat,  3 Jun 2017 04:32:01 +0200	[thread overview]
Message-ID: <20170603023204.30933-1-Jason@zx2c4.com> (raw)
In-Reply-To: <CAHmME9oLHP85ENr5aZgKsTSrxiUWoQ_pfv7C6XYxmcoxPfq3Ew@mail.gmail.com>

Per the other thread on this mailing list, here's an initial
stab at what we discussed -- adding a blocking API for the RNG,
and adding a default-on dmesg Kconfig value for when things go
wrong.

Let me know what you think of this general implementation strategy,
and if you like it, I'll move forward with polish and with integrating
it into a fix for a few currently buggy get_random_bytes use cases.

Jason A. Donenfeld (3):
  random: add synchronous API for the urandom pool
  random: add get_random_{bytes,u32,u64,int,long}_wait family
  random: warn when kernel uses unseeded randomness

 drivers/char/random.c  | 49 +++++++++++++++++++++++++++++++++++++++++++++----
 include/linux/random.h | 31 +++++++++++++++++++++++++++++++
 lib/Kconfig.debug      | 15 +++++++++++++++
 3 files changed, 91 insertions(+), 4 deletions(-)

-- 
2.13.0

  parent reply	other threads:[~2017-06-03  2:32 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-02 14:59 get_random_bytes returns bad randomness before seeding is complete Jason A. Donenfeld
2017-06-02 15:53 ` Jason A. Donenfeld
2017-06-02 16:48   ` Jason A. Donenfeld
2017-06-02 17:41   ` [kernel-hardening] " Daniel Micay
2017-06-02 17:46     ` Jason A. Donenfeld
2017-06-02 18:58     ` Kees Cook
2017-06-02 17:26 ` Theodore Ts'o
2017-06-02 17:44   ` Jason A. Donenfeld
2017-06-02 19:07     ` Theodore Ts'o
2017-06-02 23:58       ` Jason A. Donenfeld
2017-06-03  0:20         ` [kernel-hardening] " Sandy Harris
2017-06-03  2:32         ` Jason A. Donenfeld [this message]
2017-06-03  2:32           ` [PATCH RFC 1/3] random: add synchronous API for the urandom pool Jason A. Donenfeld
2017-06-03  2:32           ` [PATCH RFC 2/3] random: add get_random_{bytes,u32,u64,int,long}_wait family Jason A. Donenfeld
2017-06-03  2:32           ` [PATCH RFC 3/3] random: warn when kernel uses unseeded randomness Jason A. Donenfeld
2017-06-03  5:04         ` get_random_bytes returns bad randomness before seeding is complete Theodore Ts'o
2017-06-03 12:30           ` Jason A. Donenfeld
2017-06-03 21:45             ` Sandy Harris
2017-06-03 22:54               ` Jeffrey Walton
2017-06-03 23:55                 ` [kernel-hardening] " Daniel Micay
2017-06-04  5:55                 ` Stephan Müller
2017-06-04  5:48 ` Stephan Müller
2017-06-04  5:54   ` Jeffrey Walton
2017-06-04  6:23 ` Stephan Müller

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