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Disabled the HAVEGE random generator by default

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Rationale: The HAVEGE random generator has too many caveats to be a
standard generator that people rely on. The HAVEGE random generator is not
suitable for virtualized environments. In addition the HAVEGE random
generator is dependent on timing and specific processor traits that
cannot be guaranteed by default on compile time.

Our advice: only use HAVEGE as an additional random source for your
entropy pool, never as your primary source.
(cherry picked from commit 08f06cf49f)
This commit is contained in:
Paul Bakker 2013-06-24 13:01:53 +02:00
parent ef3f8c747e
commit 2a84424a35
1 changed files with 11 additions and 2 deletions
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13
include/polarssl/config.h
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@ -774,14 +774,23 @@
*
* Enable the HAVEGE random generator.
*
* Warning: the HAVEGE random generator is not suitable for virtualized
* environments
*
* Warning: the HAVEGE random generator is dependent on timing and specific
* processor traits. It is therefore not advised to use HAVEGE as
* your applications primary random generator or primary entropy pool
* input. As a secondary input to your entropy pool, it IS able add
* the (limited) extra entropy it provides.
*
* Module: library/havege.c
* Caller:
*
* Requires: POLARSSL_TIMING_C
*
* This module enables the HAVEGE random number generator.
*/
* Uncomment to enable the HAVEGE random generator.
#define POLARSSL_HAVEGE_C
*/
/**
* \def POLARSSL_MD_C