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/*
* Ouroboros - Copyright (C) 2016 - 2024
*
* Ouroboros flow allocation protocol header
*
* Dimitri Staessens <dimitri@ouroboros.rocks>
* Sander Vrijders <sander@ouroboros.rocks>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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., http://www.fsf.org/about/contact/.
*/
#ifndef OUROBOROS_IRMD_OAP_H
#define OUROBOROS_IRMD_OAP_H
#include <ouroboros/utils.h>
#define OAP_ID_SIZE (16)
#define OAP_HDR_MIN_SIZE (OAP_ID_SIZE + sizeof(uint64_t) + 4 * sizeof(uint16_t))
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------------------------------------------------------+
* | |
* | id (128 bits) |
* | |
* | |
* +---------------------------------------------------------------+
* | timestamp (64 bits) |
* | |
* +---------------------------------------------------------------+
* | crt_len (16 bits) | |
* +-----------+-----------------+ |
* | certificate |
* | |
* +---------------------------------------------------------------+
* | eph_len (16 bits) | |
* +-----------+-----------------+ |
* | public key for ECDHE |
* | |
* +---------------------------------------------------------------+
* | data_len (16 bits) | |
* +-----------+-----------------+ |
* | piggy backed application data |
* | |
* +---------------------------------------------------------------+
* | sig_len (16 bits) | |
* +-----------+-----------------+ |
* | signature |
* | |
* +---------------------------------------------------------------+
*/
struct oap_hdr {
uint64_t timestamp;
buffer_t id;
buffer_t crt;
buffer_t eph;
buffer_t data;
buffer_t sig;
buffer_t hdr;
};
int oap_hdr_init(buffer_t id,
void * pkp,
void * pubcrt,
buffer_t ephkey,
buffer_t data,
struct oap_hdr * oap_hdr);
void oap_hdr_fini(struct oap_hdr * oap_hdr);
int oap_hdr_decode(buffer_t hdr,
struct oap_hdr * oap_hdr);
#endif /* OUROBOROS_IRMD_OAP_H */
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