libosmocore[master]: Add osmo_rand() function

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Holger Freyther gerrit-no-reply at lists.osmocom.org
Wed Mar 1 01:27:24 UTC 2017


Patch Set 2:

> I think it would be best to map this to the linux getrandom(2)
 > syscall by default.  It is in mainline linux kernel since 2014, and
 > we should use it by default to avoid any external crypto library
 > dependency.  If this syscall exists at compile time (we can check
 > with autoconf if the function getrandom() is defined in
 > linux/random.h), then we should use it.

Not sure. There are subtle differences. OpenSSL/GNUTLS get random from the kernel to initialize their internal state (and only re-initialize at some point). If we always use getrandom we will take more bits from the kernel than before (e.g. blocking the app)

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Gerrit-MessageType: comment
Gerrit-Change-Id: I0241b814ea4c4ce1458f7ad76e31d390383c2048
Gerrit-PatchSet: 2
Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Owner: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-HasComments: No



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