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Make entropy bias self test poll multiple times

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Instead of polling the hardware entropy source a single time and
comparing the output with itself, the source is polled at least twice
and make sure that the separate outputs are different.
This commit is contained in:
Andres AG 2016-08-25 10:18:50 +01:00 • committed by Simon Butcher
parent b34e42e69e
commit e7723ec284
4 changed files with 72 additions and 66 deletions
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6
include/mbedtls/entropy.h
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@ -259,14 +259,14 @@ int mbedtls_entropy_update_seed_file( mbedtls_entropy_context *ctx, const char *
*/
int mbedtls_entropy_self_test( int verbose );
#if !defined(MBEDTLS_TEST_NULL_ENTROPY) && defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
/**
* \brief Checkup routine
*
* \return 0 if successful, or 1 if a test failed
*/
int mbedtls_entropy_self_test_bias( int verbose );
#endif /* !MBEDTLS_TEST_NULL_ENTROPY && MBEDTLS_ENTROPY_HARDWARE_ALT */
int mbedtls_entropy_source_self_test( int verbose );
#endif /* MBEDTLS_ENTROPY_HARDWARE_ALT */
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus