97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/* $OpenBSD: csi.h,v 1.1 2018/06/02 17:40:33 jsing Exp $ */
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/*
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* Copyright (c) 2018 Joel Sing <jsing@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef HEADER_CSI_H
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#define HEADER_CSI_H
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#include <sys/types.h>
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CSI_ERR_MEM 1 /* Out of memory. */
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#define CSI_ERR_INVAL 2 /* Invalid argument. */
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#define CSI_ERR_CRYPTO 3 /* Crypto failure. */
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/*
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* Primitives.
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*/
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struct csi_integer {
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const uint8_t *data;
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size_t len;
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};
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/*
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* Diffie-Hellman Key Exchange.
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*/
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struct csi_dh;
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struct csi_dh_params {
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struct csi_integer g;
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struct csi_integer p;
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};
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struct csi_dh_public {
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struct csi_integer key;
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};
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struct csi_dh_shared {
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struct csi_integer key;
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};
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struct csi_dh *csi_dh_new(void);
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void csi_dh_free(struct csi_dh *_cdh);
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u_int csi_dh_size_bits(struct csi_dh *_cdh);
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const char *csi_dh_error(struct csi_dh *_cdh);
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int csi_dh_error_code(struct csi_dh *_cdh);
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int csi_dh_set_params(struct csi_dh *_cdh, struct csi_dh_params *_params);
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int csi_dh_set_peer_public(struct csi_dh *_cdh, struct csi_dh_public *_peer);
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int csi_dh_generate_keys(struct csi_dh *_cdh, size_t _length,
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struct csi_dh_public **_public);
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int csi_dh_derive_shared_key(struct csi_dh *_cdh,
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struct csi_dh_shared **_secret);
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struct csi_dh_params *csi_dh_params(struct csi_dh *_cdh);
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struct csi_dh_public *csi_dh_public_key(struct csi_dh *_cdh);
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struct csi_dh_public *csi_dh_peer_public_key(struct csi_dh *_cdh);
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void csi_dh_params_free(struct csi_dh_params *_cdhp);
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void csi_dh_public_free(struct csi_dh_public *_cdhp);
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void csi_dh_shared_free(struct csi_dh_shared *_cdhs);
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struct csi_dh_params *csi_dh_params_modp_group1(void);
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struct csi_dh_params *csi_dh_params_modp_group2(void);
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struct csi_dh_params *csi_dh_params_modp_group5(void);
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struct csi_dh_params *csi_dh_params_modp_group14(void);
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struct csi_dh_params *csi_dh_params_modp_group15(void);
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struct csi_dh_params *csi_dh_params_modp_group16(void);
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struct csi_dh_params *csi_dh_params_modp_group17(void);
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struct csi_dh_params *csi_dh_params_modp_group18(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HEADER_CSI_H */
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