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 * RC2 low level APIs are deprecated for public use, but still ok for internal
14 #include "internal/deprecated.h"
16 #include <openssl/rc2.h>
17 #include "rc2_local.h"
20 * The input and output encrypted as though 64bit cfb mode is being used.
21 * The extra state information to record how much of the 64bit block we have
22 * used is contained in *num;
25 void RC2_cfb64_encrypt(const unsigned char *in, unsigned char *out,
26 long length, RC2_KEY *schedule, unsigned char *ivec,
27 int *num, int encrypt)
29 register unsigned long v0, v1, t;
30 register int n = *num;
31 register long l = length;
33 unsigned char *iv, c, cc;
35 iv = (unsigned char *)ivec;
43 RC2_encrypt((unsigned long *)ti, schedule);
44 iv = (unsigned char *)ivec;
49 iv = (unsigned char *)ivec;
63 RC2_encrypt((unsigned long *)ti, schedule);
64 iv = (unsigned char *)ivec;
69 iv = (unsigned char *)ivec;
78 v0 = v1 = ti[0] = ti[1] = t = c = cc = 0;