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Annotation of src/usr.bin/ssh/kex.h, Revision 1.3

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:  * 3. All advertising materials mentioning features or use of this software
                     13:  *    must display the following acknowledgement:
                     14:  *      This product includes software developed by Markus Friedl.
                     15:  * 4. The name of the author may not be used to endorse or promote products
                     16:  *    derived from this software without specific prior written permission.
                     17:  *
                     18:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     19:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     20:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     21:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     22:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     23:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     24:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     25:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     26:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     27:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     28:  */
                     29: #ifndef KEX_H
                     30: #define KEX_H
                     31:
                     32: #define        KEX_DH1 "diffie-hellman-group1-sha1"
                     33: #define KEX_DSS        "ssh-dss"
                     34:
                     35: enum kex_init_proposals {
                     36:        PROPOSAL_KEX_ALGS,
                     37:        PROPOSAL_SERVER_HOST_KEY_ALGS,
                     38:        PROPOSAL_ENC_ALGS_CTOS,
                     39:        PROPOSAL_ENC_ALGS_STOC,
                     40:        PROPOSAL_MAC_ALGS_CTOS,
                     41:        PROPOSAL_MAC_ALGS_STOC,
                     42:        PROPOSAL_COMP_ALGS_CTOS,
                     43:        PROPOSAL_COMP_ALGS_STOC,
                     44:        PROPOSAL_LANG_CTOS,
                     45:        PROPOSAL_LANG_STOC,
                     46:        PROPOSAL_MAX
                     47: };
                     48:
                     49: enum kex_modes {
                     50:        MODE_IN,
                     51:        MODE_OUT,
                     52:        MODE_MAX
                     53: };
                     54:
                     55: typedef struct Kex Kex;
                     56: typedef struct Mac Mac;
                     57: typedef struct Comp Comp;
                     58: typedef struct Enc Enc;
                     59:
                     60: struct Enc {
                     61:        int             type;
                     62:        int             enabled;
                     63:        int             block_size;
                     64:        unsigned char   *key;
                     65:        unsigned char   *iv;
                     66:        int             key_len;
                     67:        int             iv_len;
                     68:        char            *name;
                     69: };
                     70: struct Mac {
                     71:        EVP_MD          *md;
                     72:        int             enabled;
                     73:        int             mac_len;
                     74:        unsigned char   *key;
                     75:        int             key_len;
                     76:        char            *name;
                     77: };
                     78: struct Comp {
                     79:        int             type;
                     80:        int             enabled;
                     81:        char            *name;
                     82: };
                     83: struct Kex {
                     84:        Enc             enc [MODE_MAX];
                     85:        Mac             mac [MODE_MAX];
                     86:        Comp            comp[MODE_MAX];
                     87:        int             we_need;
                     88:        int             server;
                     89:        char            *name;
                     90:        char            *hostkeyalg;
                     91: };
                     92:
                     93: Buffer *kex_init(char *myproposal[PROPOSAL_MAX]);
1.3     ! markus     94: void
        !            95: kex_exchange_kexinit(
        !            96:     Buffer *my_kexinit, Buffer *peer_kexint,
        !            97:     char *peer_proposal[PROPOSAL_MAX]);
        !            98: Kex *
        !            99: kex_choose_conf(char *cprop[PROPOSAL_MAX],
        !           100:     char *sprop[PROPOSAL_MAX], int server);
        !           101: int    kex_derive_keys(Kex *k, unsigned char *hash, BIGNUM *shared_secret);
        !           102: void   packet_set_kex(Kex *k);
1.2       markus    103: int    dh_pub_is_valid(DH *dh, BIGNUM *dh_pub);
                    104: DH     *dh_new_group1();
1.1       markus    105:
                    106: unsigned char *
                    107: kex_hash(
                    108:     char *client_version_string,
                    109:     char *server_version_string,
                    110:     char *ckexinit, int ckexinitlen,
                    111:     char *skexinit, int skexinitlen,
                    112:     char *serverhostkeyblob, int sbloblen,
                    113:     BIGNUM *client_dh_pub,
                    114:     BIGNUM *server_dh_pub,
                    115:     BIGNUM *shared_secret);
                    116:
                    117: #endif