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
10 #include <openssl/cast.h>
14 * The input and output encrypted as though 64bit ofb mode is being used.
15 * The extra state information to record how much of the 64bit block we have
16 * used is contained in *num;
18 void CAST_ofb64_encrypt(const unsigned char *in, unsigned char *out,
19 long length, const CAST_KEY *schedule,
20 unsigned char *ivec, int *num)
22 register CAST_LONG v0, v1, t;
23 register int n = *num;
24 register long l = length;
41 CAST_encrypt((CAST_LONG *)ti, schedule);
49 *(out++) = *(in++) ^ d[n];
59 t = v0 = v1 = ti[0] = ti[1] = 0;