2 * Copyright 1995-2020 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 * CAST low level APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.h"
16 #include <openssl/cast.h>
17 #include "cast_local.h"
20 * The input and output encrypted as though 64bit ofb 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;
24 void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
25 long length, const CAST_KEY *schedule,
26 unsigned char *ivec, int *num)
28 register CAST_LONG v0, v1, t;
29 register int n = *num;
30 register long l = length;
47 CAST_encrypt((CAST_LONG *)ti, schedule);
55 *(out++) = *(in++) ^ d[n];
65 t = v0 = v1 = ti[0] = ti[1] = 0;