45 	struct iscsi_chap *chap = conn->auth_protocol;  in chap_gen_challenge()  local
47 	challenge_asciihex = kzalloc(chap->challenge_len * 2 + 1, GFP_KERNEL);  in chap_gen_challenge()
51 	memset(chap->challenge, 0, MAX_CHAP_CHALLENGE_LEN);  in chap_gen_challenge()
53 	ret = get_random_bytes_wait(chap->challenge, chap->challenge_len);  in chap_gen_challenge()
57 	bin2hex(challenge_asciihex, chap->challenge,  in chap_gen_challenge()
58 				chap->challenge_len);  in chap_gen_challenge()
145 	struct iscsi_chap *chap;  in chap_server_open()  local
158 	chap = conn->auth_protocol;  in chap_server_open()
162 		chap->digest_size = MD5_SIGNATURE_SIZE;  in chap_server_open()
165 		chap->digest_size = SHA1_SIGNATURE_SIZE;  in chap_server_open()
168 		chap->digest_size = SHA256_SIGNATURE_SIZE;  in chap_server_open()
171 		chap->digest_size = SHA3_256_SIGNATURE_SIZE;  in chap_server_open()
180 	chap->digest_name = chap_get_digest_name(digest_type);  in chap_server_open()
183 	chap->challenge_len = chap->digest_size;  in chap_server_open()
193 	chap->id = conn->tpg->tpg_chap_id++;  in chap_server_open()
194 	*aic_len += sprintf(aic_str + *aic_len, "CHAP_I=%d", chap->id);  in chap_server_open()
196 	pr_debug("[server] Sending CHAP_I=%d\n", chap->id);  in chap_server_open()
205 	return chap;  in chap_server_open()
226 	struct iscsi_chap *chap = conn->auth_protocol;  in chap_server_compute_hash()  local
231 	digest = kzalloc(chap->digest_size, GFP_KERNEL);  in chap_server_compute_hash()
237 	response = kzalloc(chap->digest_size * 2 + 2, GFP_KERNEL);  in chap_server_compute_hash()
243 	client_digest = kzalloc(chap->digest_size, GFP_KERNEL);  in chap_server_compute_hash()
249 	server_digest = kzalloc(chap->digest_size, GFP_KERNEL);  in chap_server_compute_hash()
302 	if (strlen(chap_r) != chap->digest_size * 2) {  in chap_server_compute_hash()
306 	if (hex2bin(client_digest, chap_r, chap->digest_size) < 0) {  in chap_server_compute_hash()
313 	tfm = crypto_alloc_shash(chap->digest_name, 0, 0);  in chap_server_compute_hash()
334 	ret = crypto_shash_update(desc, &chap->id, 1);  in chap_server_compute_hash()
347 	ret = crypto_shash_finup(desc, chap->challenge,  in chap_server_compute_hash()
348 				 chap->challenge_len, server_digest);  in chap_server_compute_hash()
354 	bin2hex(response, server_digest, chap->digest_size);  in chap_server_compute_hash()
356 		chap->digest_name, response);  in chap_server_compute_hash()
358 	if (memcmp(server_digest, client_digest, chap->digest_size) != 0) {  in chap_server_compute_hash()
360 			chap->digest_name);  in chap_server_compute_hash()
364 				" successful.\n\n", chap->digest_name);  in chap_server_compute_hash()
430 	if (initiatorchg_len == chap->challenge_len &&  in chap_server_compute_hash()
431 				!memcmp(initiatorchg_binhex, chap->challenge,  in chap_server_compute_hash()
480 	bin2hex(response, digest, chap->digest_size);  in chap_server_compute_hash()
507 	struct iscsi_chap *chap = conn->auth_protocol;  in chap_main_loop()  local
509 	if (!chap) {  in chap_main_loop()
510 		chap = chap_server_open(conn, auth, in_text, out_text, out_len);  in chap_main_loop()
511 		if (!chap)  in chap_main_loop()
513 		chap->chap_state = CHAP_STAGE_SERVER_AIC;  in chap_main_loop()
515 	} else if (chap->chap_state == CHAP_STAGE_SERVER_AIC) {  in chap_main_loop()
523 			chap->chap_state = CHAP_STAGE_SERVER_NR;  in chap_main_loop()