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mbedtls_hmac_drbg_update_seed_file() function
This function reads and updates a seed file. The seed is added to this instance.
Syntax
Implemented in ![]()
hmac_drbg.c:457
Return value
\c 0 on success. #MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR on file error. #MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED on reseed failure. #MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG if the existing seed file is too large.
Related Functions
Found 11 other functions taking a ![]()
mbedtls_hmac_drbg_context
argument:
Function
Description
This function updates the state of the HMAC_DRBG context.
This function resets HMAC_DRBG context to the state immediately after initial call of mbedtls_hmac_drbg_init().
HMAC_DRBG context initialization. This function makes the context ready for mbedtls_hmac_drbg_seed(), mbedtls_hmac_drbg_seed_buf() or mbedtls_hmac_drbg_free().
This function reseeds the HMAC_DRBG context, that is extracts data from the entropy source.
This function turns prediction resistance on or off. The default value is off.
This function writes a seed file.
This function sets the amount of entropy grabbed on each seed or reseed. See the documentation of mbedtls_hmac_drbg_seed() for the default value.
Set the reseed interval. The reseed interval is the number of calls to mbedtls_hmac_drbg_random() or mbedtls_hmac_drbg_random_with_add() after which the entropy function is called again. The default value is #MBEDTLS_HMAC_DRBG_RESEED_INTERVAL.
References
Code
Location
Call Tree
mbedtls_hmac_drbg_update_seed_file() calls 3 functions:
Data Use
mbedtls_hmac_drbg_update_seed_file():