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Add MBEDTLS_ENTROPY_HARDWARE_ALT

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Makes it easier for an external module to plug its hardware entropy collector.
This commit is contained in:
Manuel Pégourié-Gonnard 2015-06-19 10:06:21 +02:00
parent bf82ff0209
commit 3f77dfbd52
3 changed files with 31 additions and 0 deletions
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14
include/mbedtls/entropy_poll.h
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@ -42,6 +42,7 @@ extern "C" {
#define MBEDTLS_ENTROPY_MIN_PLATFORM 32 /**< Minimum for platform source */
#define MBEDTLS_ENTROPY_MIN_HAVEGE 32 /**< Minimum for HAVEGE */
#define MBEDTLS_ENTROPY_MIN_HARDCLOCK 4 /**< Minimum for mbedtls_timing_hardclock() */
#define MBEDTLS_ENTROPY_MIN_HARDWARE 32 /**< Minimum for the hardware source */
#if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
/**
@ -69,6 +70,19 @@ int mbedtls_hardclock_poll( void *data,
unsigned char *output, size_t len, size_t *olen );
#endif
#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
/**
* \brief Entropy poll callback for a hardware source
*
* \warning This is not provided by mbed TLS!
* See \c MBEDTLS_ENTROPY_HARDWARE_ALT in config.h.
*
* \note This must accept NULL as its first argument.
*/
int mbedtls_hardware_poll( void *data,
unsigned char *output, size_t len, size_t *olen );
#endif
#ifdef __cplusplus
}
#endif