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From: "Daniel Cegiełka" <daniel.cegielka@gmail.com>
To: musl@lists.openwall.com
Subject: Re: thoughts on reallocarray, explicit_bzero?
Date: Thu, 29 Jan 2015 11:31:10 +0100	[thread overview]
Message-ID: <CAPLrYERAkX=1iiAKwkRntyn-=TQhFnoABZ1uwKQmTpiGG433XA@mail.gmail.com> (raw)
In-Reply-To: <20150129100431.GJ32318@port70.net>

2015-01-29 11:04 GMT+01:00 Szabolcs Nagy <nsz@port70.net>:
> * Daniel Cegie??ka <daniel.cegielka@gmail.com> [2015-01-29 10:30:40 +0100]:
>> yet another secure_memzero(). A better solution would be to promote a
>> single standard (eg. memset_s()) and the expectation that the compiler
>> will respect it.
>>
>
> i think you don't know the semantics of memset_s
> (it uses nonsense types, has superflous arguments, handles
> constraint violations through global state etc)
>
> it is a complicated mess and not a good api to standardize on
> if all you want is to avoid information leak in crypto code

I gave this as an example - the intention is to have a single standard
(vs secure_memzero(), explicit_bzero(), memzero_explicit(), ...).

http://openwall.com/lists/musl/2015/01/14/5


btw. libsodium prefers memset_s() over explicit_bzero() and over weak symbols.

https://github.com/jedisct1/libsodium/blob/master/src/libsodium/sodium/utils.c#L56


  reply	other threads:[~2015-01-29 10:31 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-19 15:31 Isaac Dunham
2014-05-19 15:43 ` Rich Felker
2014-05-19 16:19   ` Daniel Cegiełka
2014-05-20  6:19     ` Rich Felker
2014-05-20 15:50       ` Daniel Cegiełka
2014-05-19 15:44 ` Daniel Cegiełka
2014-05-19 16:16   ` Rich Felker
2014-05-19 16:30     ` Daniel Cegiełka
2014-05-19 16:32     ` Szabolcs Nagy
2015-01-28 22:01     ` Daniel Cegiełka
2015-01-28 22:34       ` Daniel Cegiełka
2015-01-28 22:38         ` Nathan McSween
2015-01-28 22:54           ` Daniel Cegiełka
2015-01-28 23:02             ` Josiah Worcester
2015-01-29  2:19         ` Rich Felker
2015-01-29  4:03           ` Brent Cook
2015-01-29  4:15             ` Rich Felker
2015-01-29  9:30               ` Daniel Cegiełka
2015-01-29 10:04                 ` Szabolcs Nagy
2015-01-29 10:31                   ` Daniel Cegiełka [this message]
2015-01-29 10:54                   ` Daniel Cegiełka
2014-05-19 16:25 ` Szabolcs Nagy
2014-05-19 16:45   ` Daniel Cegiełka
2014-05-19 16:58     ` Rich Felker
2014-05-19 16:55   ` Rich Felker
2014-05-19 18:12     ` Szabolcs Nagy
2014-05-19 22:08   ` Andy Lutomirski
2014-05-20  0:41     ` Szabolcs Nagy
2014-06-11  9:59   ` Thorsten Glaser
2014-06-11 12:59     ` Rich Felker

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