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Documentation: siphash: convert danger note to warning for HalfSipHash

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Render danger paragraph into warning block for emphasization.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Bagas Sanjaya 2022-04-17 14:50:57 +07:00 committed by Jason A. Donenfeld
parent 8717627d6a
commit ec862155c3
1 changed files with 6 additions and 6 deletions
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12
Documentation/security/siphash.rst
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@ -121,12 +121,12 @@ even scarier, uses an easily brute-forcable 64-bit key (with a 32-bit output)
instead of SipHash's 128-bit key. However, this may appeal to some
high-performance `jhash` users.
Danger!
Do not ever use HalfSipHash except for as a hashtable key function, and only
then when you can be absolutely certain that the outputs will never be
transmitted out of the kernel. This is only remotely useful over `jhash` as a
means of mitigating hashtable flooding denial of service attacks.
.. warning::
Do not ever use HalfSipHash except for as a hashtable key function, and
only then when you can be absolutely certain that the outputs will never
be transmitted out of the kernel. This is only remotely useful over
`jhash` as a means of mitigating hashtable flooding denial of service
attacks.
Generating a HalfSipHash key
============================