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Diffstat (limited to 'crypto/openssh/kex.h')
| -rw-r--r-- | crypto/openssh/kex.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/crypto/openssh/kex.h b/crypto/openssh/kex.h new file mode 100644 index 0000000..2129581 --- /dev/null +++ b/crypto/openssh/kex.h @@ -0,0 +1,129 @@ +/* + * 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 + +#define KEX_DH1 "diffie-hellman-group1-sha1" +#define KEX_DHGEX "diffie-hellman-group-exchange-sha1" +#define KEX_DSS "ssh-dss" + +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; + unsigned char *key; + unsigned char *iv; +}; +struct Mac { + char *name; + int enabled; + EVP_MD *md; + int mac_len; + unsigned 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; + char *hostkeyalg; + 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, unsigned 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 *); +DH *dh_new_group1(); + +unsigned 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); + +unsigned 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 minbits, BIGNUM *prime, BIGNUM *gen, + BIGNUM *client_dh_pub, + BIGNUM *server_dh_pub, + BIGNUM *shared_secret); +#endif |
