490 fb64_stream_iv(Block seed, struct stinfo *stp)  in fb64_stream_iv()  argument
493 	memmove((void *)stp->str_iv, (void *)seed, sizeof(Block));  in fb64_stream_iv()
494 	memmove((void *)stp->str_output, (void *)seed, sizeof(Block));  in fb64_stream_iv()
496 	DES_key_sched((Block *)stp->str_ikey, &stp->str_sched);  in fb64_stream_iv()
498 	stp->str_index = sizeof(Block);  in fb64_stream_iv()
502 fb64_stream_key(Block key, struct stinfo *stp)  in fb64_stream_key()  argument
504 	memmove((void *)stp->str_ikey, (void *)key, sizeof(Block));  in fb64_stream_key()
505 	DES_key_sched((Block *)key, &stp->str_sched);  in fb64_stream_key()
507 	memmove((void *)stp->str_output, (void *)stp->str_iv, sizeof(Block));  in fb64_stream_key()
509 	stp->str_index = sizeof(Block);  in fb64_stream_key()
537 	struct stinfo *stp = &fb[CFB].streams[DIR_ENCRYPT-1];  in cfb64_encrypt()  local
540 	idx = stp->str_index;  in cfb64_encrypt()
544 			DES_ecb_encrypt((Block *)stp->str_output, (Block *)b, &stp->str_sched, 1);  in cfb64_encrypt()
545 			memmove((void *)stp->str_feed, (void *)b, sizeof(Block));  in cfb64_encrypt()
550 		*s = stp->str_output[idx] = (stp->str_feed[idx] ^ *s);  in cfb64_encrypt()
554 	stp->str_index = idx;  in cfb64_encrypt()
560 	struct stinfo *stp = &fb[CFB].streams[DIR_DECRYPT-1];  in cfb64_decrypt()  local
569 		if (stp->str_index)  in cfb64_decrypt()
570 			--stp->str_index;  in cfb64_decrypt()
574 	idx = stp->str_index++;  in cfb64_decrypt()
577 		DES_ecb_encrypt((Block *)stp->str_output, (Block *)b, &stp->str_sched, 1);  in cfb64_decrypt()
578 		memmove((void *)stp->str_feed, (void *)b, sizeof(Block));  in cfb64_decrypt()
579 		stp->str_index = 1;	/* Next time will be 1 */  in cfb64_decrypt()
584 	stp->str_output[idx] = data;  in cfb64_decrypt()
585 	return(data ^ stp->str_feed[idx]);  in cfb64_decrypt()
610 	struct stinfo *stp = &fb[OFB].streams[DIR_ENCRYPT-1];  in ofb64_encrypt()  local
613 	idx = stp->str_index;  in ofb64_encrypt()
617 			DES_ecb_encrypt((Block *)stp->str_feed, (Block *)b, &stp->str_sched, 1);  in ofb64_encrypt()
618 			memmove((void *)stp->str_feed, (void *)b, sizeof(Block));  in ofb64_encrypt()
621 		*s++ ^= stp->str_feed[idx];  in ofb64_encrypt()
624 	stp->str_index = idx;  in ofb64_encrypt()
630 	struct stinfo *stp = &fb[OFB].streams[DIR_DECRYPT-1];  in ofb64_decrypt()  local
639 		if (stp->str_index)  in ofb64_decrypt()
640 			--stp->str_index;  in ofb64_decrypt()
644 	idx = stp->str_index++;  in ofb64_decrypt()
647 		DES_ecb_encrypt((Block *)stp->str_feed, (Block *)b, &stp->str_sched, 1);  in ofb64_decrypt()
648 		memmove((void *)stp->str_feed, (void *)b, sizeof(Block));  in ofb64_decrypt()
649 		stp->str_index = 1;	/* Next time will be 1 */  in ofb64_decrypt()
653 	return(data ^ stp->str_feed[idx]);  in ofb64_decrypt()