#ifndef KEX_H
#define KEX_H
#define KEX_DH1 "diffie-hellman-group1-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
};
typedef struct Kex Kex;
typedef struct Mac Mac;
typedef struct Comp Comp;
typedef struct Enc Enc;
struct Enc {
int type;
int enabled;
int block_size;
unsigned char *key;
unsigned char *iv;
int key_len;
int iv_len;
char *name;
};
struct Mac {
EVP_MD *md;
int enabled;
int mac_len;
unsigned char *key;
int key_len;
char *name;
};
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;
};
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_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);
#endif