2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
11 * DES low level APIs are deprecated for public use, but still ok for internal
14 #include "internal/deprecated.h"
16 #include "des_local.h"
19 * The input and output encrypted as though 64bit cfb mode is being used.
20 * The extra state information to record how much of the 64bit block we have
21 * used is contained in *num;
24 void DES_cfb64_encrypt(const unsigned char *in, unsigned char *out,
25 long length, DES_key_schedule *schedule,
26 DES_cblock *ivec, int *num, int enc)
28 register DES_LONG v0, v1;
29 register long l = length;
30 register int n = *num;
32 unsigned char *iv, c, cc;
42 DES_encrypt1(ti, schedule, DES_ENCRYPT);
62 DES_encrypt1(ti, schedule, DES_ENCRYPT);
77 v0 = v1 = ti[0] = ti[1] = c = cc = 0;