oath_hotp_validate - API function

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.

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 2.6.12 oath_hotp_validate(3)

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.

oath_hotp_validate - API function

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/

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.