2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
13 * The input and output encrypted as though 64bit cfb mode is being used.
14 * The extra state information to record how much of the 64bit block we have
15 * used is contained in *num;
18 void DES_cfb64_encrypt(const unsigned char *in, unsigned char *out,
19 long length, DES_key_schedule *schedule,
20 DES_cblock *ivec, int *num, int enc)
22 register DES_LONG v0, v1;
23 register long l = length;
24 register int n = *num;
26 unsigned char *iv, c, cc;
36 DES_encrypt1(ti, schedule, DES_ENCRYPT);
56 DES_encrypt1(ti, schedule, DES_ENCRYPT);
71 v0 = v1 = ti[0] = ti[1] = c = cc = 0;