# Copyright (c) 2020 HAW Hamburg
#
# This file is subject to the terms and conditions of the GNU Lesser
# General Public License v2.1. See the file LICENSE in the top level
# directory for more details.

menu "Entropy sources"
    depends on USEMODULE_ENTROPY_SOURCE

config ENTROPY_SOURCE_TESTS_WIN
    int "Window size for Adaptive Proportion Test"
    default 512
    depends on ENTROPY_SOURCE_ADC_HEALTH_TEST || ENTROPY_SOURCE_ZERO_HEALTH_TEST
    help
        In (NIST SP 800-90B 4.4.2) a window size of 512 samples is recommended for non-binary
        sources. Typically, RIOT use cases will not request as many samples, thus, it might be worth
        considering a smaller window size so the test is more likely to complete a cycle. It is
        noteworthy that a cutoff value calculated by @ref entropy_source_test_prop_cutoff that is
        greater than the window size may lead to undetected errors.

config ENTROPY_SOURCE_NEUMANN_ABORT
    int "Abort factor for von Neumann extractor"
    default 5
    help
        Abort factor for von Neumann extractor. The algorithms runs as long as no bit
        changes appear in subsequent samples. This define adds a factor that
        aborts the procedure after (factor * requested length) samples.

rsource "adc_noise/Kconfig"
rsource "zero_entropy/Kconfig"

endmenu # Entropy sources