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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.
*
* Function implements random delay by incrementing local variable
* randomized number of times.
* Function implements a random delay by incrementing a local
* 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
* 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 );