| /* $OpenBSD: kex.h,v 1.16 2001/03/28 21:59:40 provos Exp $ */ |
| |
| /* |
| * Copyright (c) 2000 Markus Friedl. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #ifndef KEX_H |
| #define KEX_H |
| |
| #include <openssl/evp.h> |
| #include "buffer.h" |
| |
| #define KEX_DH1 "diffie-hellman-group1-sha1" |
| #define KEX_DHGEX "diffie-hellman-group-exchange-sha1" |
| |
| enum kex_init_proposals { |
| PROPOSAL_KEX_ALGS, |
| PROPOSAL_SERVER_HOST_KEY_ALGS, |
| PROPOSAL_ENC_ALGS_CTOS, |
| PROPOSAL_ENC_ALGS_STOC, |
| PROPOSAL_MAC_ALGS_CTOS, |
| PROPOSAL_MAC_ALGS_STOC, |
| PROPOSAL_COMP_ALGS_CTOS, |
| PROPOSAL_COMP_ALGS_STOC, |
| PROPOSAL_LANG_CTOS, |
| PROPOSAL_LANG_STOC, |
| PROPOSAL_MAX |
| }; |
| |
| enum kex_modes { |
| MODE_IN, |
| MODE_OUT, |
| MODE_MAX |
| }; |
| |
| enum kex_exchange { |
| DH_GRP1_SHA1, |
| DH_GEX_SHA1 |
| }; |
| |
| typedef struct Kex Kex; |
| typedef struct Mac Mac; |
| typedef struct Comp Comp; |
| typedef struct Enc Enc; |
| |
| struct Enc { |
| char *name; |
| Cipher *cipher; |
| int enabled; |
| u_char *key; |
| u_char *iv; |
| }; |
| struct Mac { |
| char *name; |
| int enabled; |
| EVP_MD *md; |
| int mac_len; |
| u_char *key; |
| int key_len; |
| }; |
| struct Comp { |
| int type; |
| int enabled; |
| char *name; |
| }; |
| struct Kex { |
| Enc enc [MODE_MAX]; |
| Mac mac [MODE_MAX]; |
| Comp comp[MODE_MAX]; |
| int we_need; |
| int server; |
| char *name; |
| int hostkey_type; |
| int kex_type; |
| }; |
| |
| Buffer *kex_init(char *myproposal[PROPOSAL_MAX]); |
| void |
| kex_exchange_kexinit( |
| Buffer *my_kexinit, Buffer *peer_kexint, |
| char *peer_proposal[PROPOSAL_MAX]); |
| Kex * |
| kex_choose_conf(char *cprop[PROPOSAL_MAX], |
| char *sprop[PROPOSAL_MAX], int server); |
| int kex_derive_keys(Kex *k, u_char *hash, BIGNUM *shared_secret); |
| void packet_set_kex(Kex *k); |
| int dh_pub_is_valid(DH *dh, BIGNUM *dh_pub); |
| DH *dh_new_group_asc(const char *, const char *); |
| DH *dh_new_group(BIGNUM *, BIGNUM *); |
| void dh_gen_key(DH *, int); |
| DH *dh_new_group1(void); |
| |
| u_char * |
| kex_hash( |
| char *client_version_string, |
| char *server_version_string, |
| char *ckexinit, int ckexinitlen, |
| char *skexinit, int skexinitlen, |
| char *serverhostkeyblob, int sbloblen, |
| BIGNUM *client_dh_pub, |
| BIGNUM *server_dh_pub, |
| BIGNUM *shared_secret); |
| |
| u_char * |
| kex_hash_gex( |
| char *client_version_string, |
| char *server_version_string, |
| char *ckexinit, int ckexinitlen, |
| char *skexinit, int skexinitlen, |
| char *serverhostkeyblob, int sbloblen, |
| int min, int wantbits, int max, |
| BIGNUM *prime, BIGNUM *gen, |
| BIGNUM *client_dh_pub, |
| BIGNUM *server_dh_pub, |
| BIGNUM *shared_secret); |
| #endif |