NAME

       oath_hex2bin - API function

SYNOPSIS

       #include <oath.h>

       int oath_hex2bin(const char * hexstr, char * binstr, size_t * binlen);

ARGUMENTS

       const char * hexstr
                   input string with hex data

       char * binstr
                   output string that holds binary data, or NULL

       size_t * binlen
                   output variable holding needed length of binstr

DESCRIPTION

       Convert string with hex data to binary data.

       Non-hexadecimal data are not ignored but instead will lead to an OATH_INVALID_HEX error.

       If  binstr is NULL, then binlen will be populated with the necessary length.  If the binstr buffer is too
       small, OATH_TOO_SMALL_BUFFER is returned and binlen will contain the necessary length.

RETURNS

       On success, OATH_OK (zero) is returned, otherwise an error code is returned.

REPORTING BUGS

       Report bugs to <oath-toolkit-help@nongnu.org>.  liboath home  page:  https://www.nongnu.org/oath-toolkit/
       General help using GNU software: http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright © 2009-2020 Simon Josefsson.
       Copying  and distribution of this file, with or without modification, are permitted in any medium without
       royalty provided the copyright notice and this notice are preserved.

liboath                                              2.6.11                                      oath_hex2bin(3)