oath_totp_validate3 man page on DragonFly
[printable version]
oath_totp_validate3(3) liboath oath_totp_validate3(3)
NAME
oath_totp_validate3 - API function
SYNOPSIS
#include <oath.h>
int oath_totp_validate3(const char * secret, size_t secret_length,
time_t now, unsigned time_step_size, time_t start_offset, size_t win‐
dow, int * otp_pos, uint64_t * otp_counter, const char * otp);
ARGUMENTS
const char * secret
the shared secret string
size_t secret_length
length of secret
time_t now Unix time value to validate TOTP for
unsigned time_step_size
time step system parameter (typically 30)
time_t start_offset
Unix time of when to start counting time steps (typically
0)
size_t window
how many OTPs after/before start OTP to test
int * otp_pos
output search position in search window (may be NULL).
uint64_t * otp_counter
counter value used to calculate OTP value (may be NULL).
const char * otp
the OTP to validate.
DESCRIPTION
Validate an OTP according to OATH TOTP algorithm per RFC 6238.
Currently only OTP lengths of 6, 7 or 8 digits are supported. This
restrictions may be lifted in future versions, although some limita‐
tions are inherent in the protocol.
RETURNS
Returns absolute value of position in OTP window (zero is first posi‐
tion), or OATH_INVALID_OTP if no OTP was found in OTP window, or an
error code.
SINCE
2.4.0
REPORTING BUGS
Report bugs to <oath-toolkit-help@nongnu.org>. liboath home page:
http://www.gnu.org/software/liboath/ General help using GNU software:
http://www.gnu.org/gethelp/
COPYRIGHT
Copyright © 2009-2015 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 2.6.1 oath_totp_validate3(3)
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