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Member "openssl-1.0.2r/crypto/aes/aes_cfb.c" (26 Feb 2019, 3747 Bytes) of package /linux/misc/openssl-1.0.2r.tar.gz:
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1 /* crypto/aes/aes_cfb.c */
2 /* ====================================================================
3 * Copyright (c) 2002-2006 The OpenSSL Project. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * email@example.com.
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
52 #include <openssl/aes.h>
53 #include <openssl/modes.h>
56 * The input and output encrypted as though 128bit cfb mode is being used.
57 * The extra state information to record how much of the 128bit block we have
58 * used is contained in *num;
61 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
62 size_t length, const AES_KEY *key,
63 unsigned char *ivec, int *num, const int enc)
66 CRYPTO_cfb128_encrypt(in, out, length, key, ivec, num, enc,
67 (block128_f) AES_encrypt);
70 /* N.B. This expects the input to be packed, MS bit first */
71 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
72 size_t length, const AES_KEY *key,
73 unsigned char *ivec, int *num, const int enc)
75 CRYPTO_cfb128_1_encrypt(in, out, length, key, ivec, num, enc,
76 (block128_f) AES_encrypt);
79 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
80 size_t length, const AES_KEY *key,
81 unsigned char *ivec, int *num, const int enc)
83 CRYPTO_cfb128_8_encrypt(in, out, length, key, ivec, num, enc,
84 (block128_f) AES_encrypt);