crypto/openssh/kexgexs.c

43 #include "kex.h"
73 	struct kex *kex = ssh->kex;
83 	kex->nbits = nbits;
84 	kex->min = min;
85 	kex->max = max;
91 	if (kex->max < kex->min || kex->nbits < kex->min ||
92 	    kex->max < kex->nbits) {
98 	kex->dh = PRIVSEP(choose_dh(min, nbits, max));
99 	if (kex->dh == NULL) {
106 	    (r = sshpkt_put_bignum2(ssh, kex->dh->p)) != 0 ||
107 	    (r = sshpkt_put_bignum2(ssh, kex->dh->g)) != 0 ||
112 	if ((r = dh_gen_key(kex->dh, kex->we_need * 8)) != 0)
126 	struct kex *kex = ssh->kex;
135 	if (kex->load_host_public_key == NULL ||
136 	    kex->load_host_private_key == NULL) {
140 	server_host_public = kex->load_host_public_key(kex->hostkey_type,
141 	    kex->hostkey_nid, ssh);
142 	server_host_private = kex->load_host_private_key(kex->hostkey_type,
143 	    kex->hostkey_nid, ssh);
166 	DHparams_print_fp(stderr, kex->dh);
168 	BN_print_fp(stderr, kex->dh->pub_key);
171 	if (!dh_pub_is_valid(kex->dh, dh_client_pub)) {
177 	klen = DH_size(kex->dh);
183 	if ((kout = DH_compute_key(kbuf, dh_client_pub, kex->dh)) < 0 ||
197 	    kex->hash_alg,
198 	    kex->client_version_string,
199 	    kex->server_version_string,
200 	    sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
201 	    sshbuf_ptr(kex->my), sshbuf_len(kex->my),
203 	    kex->min, kex->nbits, kex->max,
204 	    kex->dh->p, kex->dh->g,
206 	    kex->dh->pub_key,
212 	if (kex->session_id == NULL) {
213 		kex->session_id_len = hashlen;
214 		kex->session_id = malloc(kex->session_id_len);
215 		if (kex->session_id == NULL) {
219 		memcpy(kex->session_id, hash, kex->session_id_len);
223 	if ((r = kex->sign(server_host_private, server_host_public, &signature,
224 	     &slen, hash, hashlen, kex->hostkey_alg, ssh->compat)) < 0)
232 	    (r = sshpkt_put_bignum2(ssh, kex->dh->pub_key)) != 0 ||     /* f */
240 	DH_free(kex->dh);
241 	kex->dh = NULL;