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Annotation of src/usr.bin/ssh/kex.h, Revision 1.4

1.1       markus      1: /*
                      2:  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
                      3:  *
                      4:  * Redistribution and use in source and binary forms, with or without
                      5:  * modification, are permitted provided that the following conditions
                      6:  * are met:
                      7:  * 1. Redistributions of source code must retain the above copyright
                      8:  *    notice, this list of conditions and the following disclaimer.
                      9:  * 2. Redistributions in binary form must reproduce the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer in the
                     11:  *    documentation and/or other materials provided with the distribution.
                     12:  *
                     13:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     15:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     16:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     17:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     18:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     19:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     20:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     21:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     22:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     23:  */
                     24: #ifndef KEX_H
                     25: #define KEX_H
                     26:
                     27: #define        KEX_DH1 "diffie-hellman-group1-sha1"
                     28: #define KEX_DSS        "ssh-dss"
                     29:
                     30: enum kex_init_proposals {
                     31:        PROPOSAL_KEX_ALGS,
                     32:        PROPOSAL_SERVER_HOST_KEY_ALGS,
                     33:        PROPOSAL_ENC_ALGS_CTOS,
                     34:        PROPOSAL_ENC_ALGS_STOC,
                     35:        PROPOSAL_MAC_ALGS_CTOS,
                     36:        PROPOSAL_MAC_ALGS_STOC,
                     37:        PROPOSAL_COMP_ALGS_CTOS,
                     38:        PROPOSAL_COMP_ALGS_STOC,
                     39:        PROPOSAL_LANG_CTOS,
                     40:        PROPOSAL_LANG_STOC,
                     41:        PROPOSAL_MAX
                     42: };
                     43:
                     44: enum kex_modes {
                     45:        MODE_IN,
                     46:        MODE_OUT,
                     47:        MODE_MAX
                     48: };
                     49:
                     50: typedef struct Kex Kex;
                     51: typedef struct Mac Mac;
                     52: typedef struct Comp Comp;
                     53: typedef struct Enc Enc;
                     54:
                     55: struct Enc {
                     56:        int             type;
                     57:        int             enabled;
                     58:        int             block_size;
                     59:        unsigned char   *key;
                     60:        unsigned char   *iv;
                     61:        int             key_len;
                     62:        int             iv_len;
                     63:        char            *name;
                     64: };
                     65: struct Mac {
                     66:        EVP_MD          *md;
                     67:        int             enabled;
                     68:        int             mac_len;
                     69:        unsigned char   *key;
                     70:        int             key_len;
                     71:        char            *name;
                     72: };
                     73: struct Comp {
                     74:        int             type;
                     75:        int             enabled;
                     76:        char            *name;
                     77: };
                     78: struct Kex {
                     79:        Enc             enc [MODE_MAX];
                     80:        Mac             mac [MODE_MAX];
                     81:        Comp            comp[MODE_MAX];
                     82:        int             we_need;
                     83:        int             server;
                     84:        char            *name;
                     85:        char            *hostkeyalg;
                     86: };
                     87:
                     88: Buffer *kex_init(char *myproposal[PROPOSAL_MAX]);
1.3       markus     89: void
                     90: kex_exchange_kexinit(
                     91:     Buffer *my_kexinit, Buffer *peer_kexint,
                     92:     char *peer_proposal[PROPOSAL_MAX]);
                     93: Kex *
                     94: kex_choose_conf(char *cprop[PROPOSAL_MAX],
                     95:     char *sprop[PROPOSAL_MAX], int server);
                     96: int    kex_derive_keys(Kex *k, unsigned char *hash, BIGNUM *shared_secret);
                     97: void   packet_set_kex(Kex *k);
1.2       markus     98: int    dh_pub_is_valid(DH *dh, BIGNUM *dh_pub);
                     99: DH     *dh_new_group1();
1.1       markus    100:
                    101: unsigned char *
                    102: kex_hash(
                    103:     char *client_version_string,
                    104:     char *server_version_string,
                    105:     char *ckexinit, int ckexinitlen,
                    106:     char *skexinit, int skexinitlen,
                    107:     char *serverhostkeyblob, int sbloblen,
                    108:     BIGNUM *client_dh_pub,
                    109:     BIGNUM *server_dh_pub,
                    110:     BIGNUM *shared_secret);
                    111:
                    112: #endif