pskc_get_key_algparm_chall_checkdigits - API function

       pskc_key_t * key
                   a pskc_key_t handle, from pskc_get_keypackage().

       int * present
                   output variable indicating whether data was provided or not.

       Copyright © 2012-2020 Simon Josefsson.
       Copying and distribution of this file, with or without modification, are permitted in any medium  without
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libpskc                                              2.6.12            pskc_get_key_algparm_chall_checkdigits(3)

       Get  the  PSKC  KeyPackage  Key  AlgorithmParameters  ChallengeFormat  CheckDigits value.  This attribute
       indicates whether a device needs to check the appended Luhn check  digit,  as  defined  in  [ISOIEC7812],
       contained  in  a challenge.  This is only valid if the 'Encoding' attribute is set to 'DECIMAL'.  A value
       of TRUE indicates that the device will check the appended Luhn check digit in a  provided  challenge.   A
       value of FALSE indicates that the device will not check the appended Luhn check digit in the challenge.

       If present is non-NULL, it will be 0 if the field is not present or 1 if it was present.

       pskc_get_key_algparm_chall_checkdigits - API function

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       1 to indicate a CheckDigits value of true, or 0 to indicate false.

#include<pskc.h>intpskc_get_key_algparm_chall_checkdigits(pskc_key_t*key,int*present);