version 1.2, 2004/06/13 12:53:24 |
version 1.3, 2005/11/04 05:15:59 |
|
|
DH *dh; |
DH *dh; |
Key *server_host_key; |
Key *server_host_key; |
u_char *kbuf, *hash, *signature = NULL, *server_host_key_blob = NULL; |
u_char *kbuf, *hash, *signature = NULL, *server_host_key_blob = NULL; |
u_int sbloblen, klen, kout; |
u_int sbloblen, klen, kout, hashlen; |
u_int slen; |
u_int slen; |
|
|
/* generate server DH public key */ |
/* generate server DH public key */ |
|
|
key_to_blob(server_host_key, &server_host_key_blob, &sbloblen); |
key_to_blob(server_host_key, &server_host_key_blob, &sbloblen); |
|
|
/* calc H */ |
/* calc H */ |
hash = kex_dh_hash( |
kex_dh_hash( |
kex->client_version_string, |
kex->client_version_string, |
kex->server_version_string, |
kex->server_version_string, |
buffer_ptr(&kex->peer), buffer_len(&kex->peer), |
buffer_ptr(&kex->peer), buffer_len(&kex->peer), |
|
|
server_host_key_blob, sbloblen, |
server_host_key_blob, sbloblen, |
dh_client_pub, |
dh_client_pub, |
dh->pub_key, |
dh->pub_key, |
shared_secret |
shared_secret, |
|
&hash, &hashlen |
); |
); |
BN_clear_free(dh_client_pub); |
BN_clear_free(dh_client_pub); |
|
|
/* save session id := H */ |
/* save session id := H */ |
/* XXX hashlen depends on KEX */ |
|
if (kex->session_id == NULL) { |
if (kex->session_id == NULL) { |
kex->session_id_len = 20; |
kex->session_id_len = hashlen; |
kex->session_id = xmalloc(kex->session_id_len); |
kex->session_id = xmalloc(kex->session_id_len); |
memcpy(kex->session_id, hash, kex->session_id_len); |
memcpy(kex->session_id, hash, kex->session_id_len); |
} |
} |
|
|
/* sign H */ |
/* sign H */ |
/* XXX hashlen depends on KEX */ |
PRIVSEP(key_sign(server_host_key, &signature, &slen, hash, hashlen)); |
PRIVSEP(key_sign(server_host_key, &signature, &slen, hash, 20)); |
|
|
|
/* destroy_sensitive_data(); */ |
/* destroy_sensitive_data(); */ |
|
|
|
|
/* have keys, free DH */ |
/* have keys, free DH */ |
DH_free(dh); |
DH_free(dh); |
|
|
kex_derive_keys(kex, hash, shared_secret); |
kex_derive_keys(kex, hash, hashlen, shared_secret); |
BN_clear_free(shared_secret); |
BN_clear_free(shared_secret); |
kex_finish(kex); |
kex_finish(kex); |
} |
} |