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Annotation of src/usr.bin/ssh/kex.h, Revision 1.1

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]);
        !            94: DH     *new_dh_group1();
        !            95: Kex    *kex_choose_conf(char *cprop[PROPOSAL_MAX], char *sprop[PROPOSAL_MAX], int server);
        !            96: int    kex_derive_keys(Kex *k, unsigned char *hash, BIGNUM *shared_secret);
        !            97: void   bignum_print(BIGNUM *b);
        !            98: void   packet_set_kex(Kex *k);
        !            99:
        !           100: unsigned char *
        !           101: kex_hash(
        !           102:     char *client_version_string,
        !           103:     char *server_version_string,
        !           104:     char *ckexinit, int ckexinitlen,
        !           105:     char *skexinit, int skexinitlen,
        !           106:     char *serverhostkeyblob, int sbloblen,
        !           107:     BIGNUM *client_dh_pub,
        !           108:     BIGNUM *server_dh_pub,
        !           109:     BIGNUM *shared_secret);
        !           110:
        !           111: #endif