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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/rc5/rc5cfb64.c
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/rc5.h>
14 * The input and output encrypted as though 64bit cfb 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;
19 void RC5_32_cfb64_encrypt(const unsigned char *in
, unsigned char *out
,
20 long length
, RC5_32_KEY
*schedule
,
21 unsigned char *ivec
, int *num
, int encrypt
)
23 register unsigned long v0
, v1
, t
;
24 register int n
= *num
;
25 register long l
= length
;
27 unsigned char *iv
, c
, cc
;
29 iv
= (unsigned char *)ivec
;
37 RC5_32_encrypt((unsigned long *)ti
, schedule
);
38 iv
= (unsigned char *)ivec
;
43 iv
= (unsigned char *)ivec
;
57 RC5_32_encrypt((unsigned long *)ti
, schedule
);
58 iv
= (unsigned char *)ivec
;
63 iv
= (unsigned char *)ivec
;
72 v0
= v1
= ti
[0] = ti
[1] = t
= c
= cc
= 0;