oath_hotp_validate(3) liboath oath_hotp_validate(3)
NAME
oath_hotp_validate - API function
SYNOPSIS
#include <oath.h>
oath_hotp_validate(3) char * secret, size_t secret_length,
uint64_t start_moving_factor, size_t window, const char * otp);
ARGUMENTS
const char * secret
the shared secret string
size_t secret_length
length of secret
uint64_t start_moving_factor
start counter in OTP stream
size_t window
how many OTPs after start counter to test
const char * otp
the OTP to validate.
DESCRIPTION
Validate an OTP according to OATH HOTP algorithm per RFC 4226.
Currently only OTP lengths of 6, 7 or 8 digits are supported. This
restrictions may be lifted in future versions, although some limitations
are inherent in the protocol.
RETURNS
Returns position in OTP window (zero is first position), or
OATH_INVALID_OTP if no OTP was found in OTP window, or an error code.
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 (C) 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 2.6.7 oath_hotp_validate(3)
oath-toolkit 2.6.7 - Generated Tue May 9 16:28:17 CDT 2023