mirror of
http://galexander.org/git/simplesshd.git
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114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/*
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* Dropbear - a SSH2 server
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*
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* Copyright (c) 2002,2003 Matt Johnston
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE. */
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#ifndef DROPBEAR_KEX_H_
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#define DROPBEAR_KEX_H_
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#include "includes.h"
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#include "algo.h"
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#include "signkey.h"
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void send_msg_kexinit(void);
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void recv_msg_kexinit(void);
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void send_msg_newkeys(void);
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void recv_msg_newkeys(void);
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void kexfirstinitialise(void);
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void finish_kexhashbuf(void);
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#if DROPBEAR_NORMAL_DH
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struct kex_dh_param *gen_kexdh_param(void);
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void free_kexdh_param(struct kex_dh_param *param);
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void kexdh_comb_key(struct kex_dh_param *param, mp_int *dh_pub_them,
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sign_key *hostkey);
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#endif
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#if DROPBEAR_ECDH
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struct kex_ecdh_param *gen_kexecdh_param(void);
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void free_kexecdh_param(struct kex_ecdh_param *param);
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void kexecdh_comb_key(struct kex_ecdh_param *param, buffer *pub_them,
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sign_key *hostkey);
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#endif
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#if DROPBEAR_CURVE25519
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struct kex_curve25519_param *gen_kexcurve25519_param(void);
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void free_kexcurve25519_param(struct kex_curve25519_param *param);
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void kexcurve25519_comb_key(const struct kex_curve25519_param *param, const buffer *pub_them,
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sign_key *hostkey);
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#endif
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#ifndef DISABLE_ZLIB
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int is_compress_trans(void);
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int is_compress_recv(void);
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#endif
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void recv_msg_kexdh_init(void); /* server */
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void send_msg_kexdh_init(void); /* client */
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void recv_msg_kexdh_reply(void); /* client */
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void recv_msg_ext_info(void);
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struct KEXState {
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unsigned sentkexinit : 1; /*set when we've sent/recv kexinit packet */
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unsigned recvkexinit : 1;
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unsigned them_firstfollows : 1; /* true when first_kex_packet_follows is set */
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unsigned sentnewkeys : 1; /* set once we've send MSG_NEWKEYS (will be cleared once we have also received */
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unsigned recvnewkeys : 1; /* set once we've received MSG_NEWKEYS (cleared once we have also sent */
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unsigned int donefirstkex; /* Set to 1 after the first kex has completed,
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ie the transport layer has been set up */
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unsigned int donesecondkex; /* Set to 1 after the second kex has completed */
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unsigned our_first_follows_matches : 1;
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time_t lastkextime; /* time of the last kex */
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unsigned int datatrans; /* data transmitted since last kex */
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unsigned int datarecv; /* data received since last kex */
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};
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#if DROPBEAR_NORMAL_DH
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struct kex_dh_param {
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mp_int pub; /* e */
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mp_int priv; /* x */
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};
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#endif
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#if DROPBEAR_ECDH
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struct kex_ecdh_param {
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ecc_key key;
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};
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#endif
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#if DROPBEAR_CURVE25519
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#define CURVE25519_LEN 32
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struct kex_curve25519_param {
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unsigned char priv[CURVE25519_LEN];
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unsigned char pub[CURVE25519_LEN];
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};
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#endif
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#endif /* DROPBEAR_KEX_H_ */
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