1 /* 2 * ProFTPD - mod_auth_otp 3 * Copyright (c) 2015 TJ Saunders 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA. 18 * 19 * As a special exemption, TJ Saunders and other respective copyright holders 20 * give permission to link this program with OpenSSL, and distribute the 21 * resulting executable, without including the source code for OpenSSL in the 22 * source distribution. 23 */ 24 25 #ifndef MOD_AUTH_OTP_OTP_H 26 #define MOD_AUTH_OTP_OTP_H 27 28 #include "mod_auth_otp.h" 29 30 /* Following the recommendation of RFC 6238, Section 5.2 */ 31 #define AUTH_OTP_TOTP_TIMESTEP_SECS 30 32 33 /* Generate an OTP using the algorithm specified in RFC 4226 (HOTP). */ 34 int auth_otp_hotp(pool *p, const unsigned char *key, size_t key_len, 35 unsigned long counter, unsigned int *code); 36 37 /* Generate an OTP using the algorithm specified in RFC 6238 (TOTP). 38 * 39 * Note that RFC 6238 defines support using SHA1, SHA256, or SHA512; 40 * the algo argument here indicates which one to use. 41 */ 42 int auth_otp_totp(pool *p, const unsigned char *key, size_t key_len, 43 unsigned long ts, unsigned int algo, unsigned int *code); 44 45 #endif /* MOD_AUTH_OTP_OTP_H */ 46