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/* $OpenBSD: csi_internal.h,v 1.3 2022/01/10 23:03:07 tb Exp $ */
/*
* Copyright (c) 2018 Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef HEADER_CSI_INTERNAL_H
#define HEADER_CSI_INTERNAL_H
#include <stddef.h>
#include <stdint.h>
#include <openssl/bn.h>
#include <openssl/dh.h>
__BEGIN_HIDDEN_DECLS
#define MINIMUM(a, b) (((a) < (b)) ? (a) : (b))
#define CSI_MAX_BIGNUM_BYTES (16384 / 8)
#define CSI_MIN_DH_LENGTH 256
struct csi_err {
u_int code;
int errnum;
char *msg;
};
struct csi_dh{
struct csi_err err;
DH *dh;
BIGNUM *peer_pubkey;
};
void csi_err_clear(struct csi_err *_err);
int csi_err_set(struct csi_err *_err, u_int _code, const char *_fmt, ...);
int csi_err_setx(struct csi_err *_err, u_int _code, const char *_fmt, ...);
int csi_integer_to_bn(struct csi_err *_err, const char *_field,
struct csi_integer *_value, BIGNUM **_bn);
int csi_bn_to_integer(struct csi_err *_err, const BIGNUM *_bn,
struct csi_integer *_integer);
struct csi_dh_params *csi_dh_params_dup(struct csi_dh_params *_cdhp);
int csi_dh_public_is_valid(struct csi_dh *_cdh, const BIGNUM *_pubkey);
__END_HIDDEN_DECLS
#endif /* HEADER_CSI_INTERNAL_H */
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