60 static void kex_do_hook(Kex *kex);
152 kex_finish(Kex *kex)  in kex_finish()  argument
173 	kex->done = 1;  in kex_finish()
174 	kex->initial_kex_done = 1; /* never to be cleared once set */  in kex_finish()
175 	buffer_clear(&kex->peer);  in kex_finish()
177 	kex->flags &= ~KEX_INIT_SENT;  in kex_finish()
178 	xfree(kex->name);  in kex_finish()
179 	kex->name = NULL;  in kex_finish()
183 kex_send_kexinit(Kex *kex)  in kex_send_kexinit()  argument
189 	if (kex == NULL) {  in kex_send_kexinit()
193 	if (kex->flags & KEX_INIT_SENT) {  in kex_send_kexinit()
197 	kex->done = 0;  in kex_send_kexinit()
200 	kex_do_hook(kex);  in kex_send_kexinit()
203 	if (buffer_len(&kex->my) < KEX_COOKIE_LEN)  in kex_send_kexinit()
205 	cookie = buffer_ptr(&kex->my);  in kex_send_kexinit()
213 	packet_put_raw(buffer_ptr(&kex->my), buffer_len(&kex->my));  in kex_send_kexinit()
216 	kex->flags |= KEX_INIT_SENT;  in kex_send_kexinit()
225 	Kex *kex = (Kex *)ctxt;  in kex_input_kexinit()  local
228 	if (kex == NULL)  in kex_input_kexinit()
232 	buffer_append(&kex->peer, ptr, dlen);  in kex_input_kexinit()
243 	kex_kexinit_finish(kex);  in kex_input_kexinit()
252 kex_do_hook(Kex *kex)  in kex_do_hook()  argument
256 	if (kex->kex_hook == NULL)  in kex_do_hook()
260 	prop = kex_buf2prop(&kex->my, NULL);  in kex_do_hook()
261 	buffer_clear(&kex->my);  in kex_do_hook()
262 	(kex->kex_hook)(kex, prop);  in kex_do_hook()
263 	kex_prop2buf(&kex->my, prop);  in kex_do_hook()
269 kex_start(Kex *kex)  in kex_start()  argument
271 	kex_send_kexinit(kex);  in kex_start()
282 	Kex	*kex;  in kex_setup()  local
284 	kex = xmalloc(sizeof(*kex));  in kex_setup()
285 	memset(kex, 0, sizeof(*kex));  in kex_setup()
286 	buffer_init(&kex->peer);  in kex_setup()
287 	buffer_init(&kex->my);  in kex_setup()
289 	kex->kex_hook = hook; /* called by kex_send_kexinit() */  in kex_setup()
292 		kex->serverhost = xstrdup(host);  in kex_setup()
294 		kex->server = 1;  in kex_setup()
296 	kex_prop2buf(&kex->my, proposal);  in kex_setup()
298 	return kex;  in kex_setup()
302 kex_kexinit_finish(Kex *kex)  in kex_kexinit_finish()  argument
304 	if (!(kex->flags & KEX_INIT_SENT))  in kex_kexinit_finish()
305 		kex_send_kexinit(kex);  in kex_kexinit_finish()
307 	kex_choose_conf(kex);  in kex_kexinit_finish()
309 	if (kex->kex_type >= 0 && kex->kex_type < KEX_MAX &&  in kex_kexinit_finish()
310 	    kex->kex[kex->kex_type] != NULL)  in kex_kexinit_finish()
311 		(kex->kex[kex->kex_type])(kex);  in kex_kexinit_finish()
313 		fatal("Unsupported key exchange %d", kex->kex_type);  in kex_kexinit_finish()
462 kex_choose_conf(Kex *kex)  in kex_choose_conf()  argument
476 	my   = kex_buf2prop(&kex->my, NULL);  in kex_choose_conf()
477 	peer = kex_buf2prop(&kex->peer, &first_kex_follows);  in kex_choose_conf()
479 	if (kex->server) {  in kex_choose_conf()
491 		kex->newkeys[mode] = newkeys;  in kex_choose_conf()
492 		ctos = (!kex->server && mode == MODE_OUT) || (kex->server && mode == MODE_IN);  in kex_choose_conf()
496 		choose_enc(kex->server, &newkeys->enc,  cprop[nenc],  sprop[nenc]);  in kex_choose_conf()
505 	choose_kex(kex, cprop[PROPOSAL_KEX_ALGS], sprop[PROPOSAL_KEX_ALGS]);  in kex_choose_conf()
506 	choose_hostkeyalg(kex, cprop[PROPOSAL_SERVER_HOST_KEY_ALGS],  in kex_choose_conf()
510 		newkeys = kex->newkeys[mode];  in kex_choose_conf()
519 	kex->we_need = need;  in kex_choose_conf()
530 	if (!kex->initial_kex_done) {  in kex_choose_conf()
574 		if (kex->server) {  in kex_choose_conf()
619 derive_key(Kex *kex, int id, int need, u_char *hash, BIGNUM *shared_secret)  in derive_key()  argument
638 	EVP_DigestUpdate(&md, kex->session_id, kex->session_id_len);  in derive_key()
666 kex_derive_keys(Kex *kex, u_char *hash, BIGNUM *shared_secret)  in kex_derive_keys()  argument
672 		keys[i] = derive_key(kex, 'A'+i, kex->we_need, hash, shared_secret);  in kex_derive_keys()
676 		current_keys[mode] = kex->newkeys[mode];  in kex_derive_keys()
677 		kex->newkeys[mode] = NULL;  in kex_derive_keys()
678 		ctos = (!kex->server && mode == MODE_OUT) || (kex->server && mode == MODE_IN);  in kex_derive_keys()