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Update comments of mbedtls_platform_random_delay

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Arto Kinnunen 2019-12-09 10:54:03 +02:00
parent b47b105838
commit 9a506e7424
1 changed files with 10 additions and 4 deletions
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14
include/mbedtls/platform_util.h
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@ -241,15 +241,21 @@ uint32_t mbedtls_platform_random_in_range( size_t num );
/** /**
* \brief Random delay function. * \brief Random delay function.
* *
* Function implements random delay by incrementing local variable * Function implements a random delay by incrementing a local
* randomized number of times. * variable randomized number of times (busy-looping).
*
* Duration of the delay is random as number of variable increments
* is randomized.
* *
* \note Currently the function is dependent of hardware providing an * \note Currently the function is dependent of hardware providing an
* rng with MBEDTLS_ENTROPY_HARDWARE_ALT. * rng with MBEDTLS_ENTROPY_HARDWARE_ALT.
* *
* \param num Max-value for the local variable increments. * \param num Max-value for the number of local variable increments, must be
* less than INT_MAX. Total number of variable increment will be
* randomized between 1 and num.
* *
* \return In success number of increments, -1 in case of errors. * \return In success number of increments made.
* \return Negative value in case of errors.
*/ */
int mbedtls_platform_random_delay( size_t num ); int mbedtls_platform_random_delay( size_t num );