mbedtls_ctr_drbg_context::reseed_counter field

The reseed counter. This is the number of requests that have been made since the last (re)seeding, minus one. Before the initial seeding, this field contains the amount of entropy in bytes to use as a nonce for the initial seeding, or -1 if no nonce length has been explicitly set (see mbedtls_ctr_drbg_set_nonce_len()).