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Add a config flag for the global RNG

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The global RNG should be provided by the application depending on
the RNG used there. (I.e. TRNG)
This commit is contained in:
Jarno Lamsa 2019-10-01 14:54:41 +03:00
parent 0736325d80
commit d82e559a48
2 changed files with 10 additions and 1 deletions
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8
include/mbedtls/config.h
View file

@ -3683,6 +3683,14 @@
*/ */
//#define MBEDTLS_PLATFORM_GMTIME_R_ALT //#define MBEDTLS_PLATFORM_GMTIME_R_ALT
/**
* Uncomment the macro to let Mbed TLS use a platform implementation of
* global RNG.
*
* By default the global RNG function will be a no-op.
*/
//#define MBEDTLS_PLATFORM_GLOBAL_RNG
/* \} name SECTION: Customisation configuration options */ /* \} name SECTION: Customisation configuration options */
/** /**

3
library/platform_util.c
View file

@ -137,12 +137,13 @@ int mbedtls_platform_memcmp( const void *buf1, const void *buf2, size_t num )
return 1; return 1;
} }
//TODO: This is a stub implementation of the global RNG function. #if !defined(MBEDTLS_PLATFORM_GLOBAL_RNG)
size_t mbedtls_random_in_range( size_t num ) size_t mbedtls_random_in_range( size_t num )
{ {
(void) num; (void) num;
return 0; return 0;
} }
#endif /* !MBEDTLS_PLATFORM_GLOBAL_RNG */
#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT) #if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT)
#include <time.h> #include <time.h>