+/*
+ sptps.h -- Simple Peer-to-Peer Security
+ Copyright (C) 2011 Guus Sliepen <guus@tinc-vpn.org>,
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "system.h"
+
+#include "cipher.h"
+#include "digest.h"
+#include "ecdh.h"
+#include "ecdsa.h"
+
+#define STATE_FIRST_KEX 0 // Waiting for peer's ECDHE pubkey
+#define STATE_NORMAL 1
+#define STATE_WAIT_KEX 2 // Waiting for peer's ECDHE pubkey
+#define STATE_WAIT_ACK 3 // Waiting for peer's acknowledgement of pubkey reception
+
+typedef bool (*send_data_t)(void *handle, const char *data, size_t len);
+typedef bool (*receive_record_t)(void *handle, uint8_t type, const char *data, uint16_t len);
+
+typedef struct sptps {
+ bool initiator;
+ int state;
+
+ char *inbuf;
+ size_t buflen;
+
+ cipher_t incipher;
+ digest_t indigest;
+ uint32_t inseqno;
+
+ cipher_t outcipher;
+ digest_t outdigest;
+ uint32_t outseqno;
+
+ ecdsa_t mykey;
+ ecdsa_t hiskey;
+ ecdh_t ecdh;
+
+ char *myrandom;
+ char *key;
+ char *label;
+ size_t labellen;
+
+ void *handle;
+ send_data_t send_data;
+ receive_record_t receive_record;
+} sptps_t;
+
+extern bool start_sptps(sptps_t *s, void *handle, bool initiator, ecdsa_t mykey, ecdsa_t hiskey, const char *label, size_t labellen, send_data_t send_data, receive_record_t receive_record);
+extern bool stop_sptps(sptps_t *s);
+extern bool send_record(sptps_t *s, uint8_t type, const char *data, uint16_t len);
+extern bool receive_data(sptps_t *s, const char *data, size_t len);