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/* $OpenBSD: aes_cfb.c,v 1.8 2014/06/12 15:49:27 deraadt Exp $ */ |
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/* ==================================================================== |
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* Copyright (c) 2002-2006 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* openssl-core@openssl.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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* |
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*/ |
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#include <openssl/aes.h> |
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#include <openssl/modes.h> |
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/* The input and output encrypted as though 128bit cfb mode is being |
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* used. The extra state information to record how much of the |
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* 128bit block we have used is contained in *num; |
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*/ |
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void |
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AES_cfb128_encrypt(const unsigned char *in, unsigned char *out, size_t length, |
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const AES_KEY *key, unsigned char *ivec, int *num, const int enc) |
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{ |
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CRYPTO_cfb128_encrypt(in, out, length, key, ivec, num, enc, |
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(block128_f)AES_encrypt); |
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} |
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/* N.B. This expects the input to be packed, MS bit first */ |
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void |
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AES_cfb1_encrypt(const unsigned char *in, unsigned char *out, size_t length, |
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const AES_KEY *key, unsigned char *ivec, int *num, const int enc) |
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{ |
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CRYPTO_cfb128_1_encrypt(in, out, length, key, ivec, num, enc, |
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(block128_f)AES_encrypt); |
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} |
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void |
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AES_cfb8_encrypt(const unsigned char *in, unsigned char *out, size_t length, |
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const AES_KEY *key, unsigned char *ivec, int *num, const int enc) |
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{ |
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CRYPTO_cfb128_8_encrypt(in, out, length, key, ivec, num, enc, |
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(block128_f)AES_encrypt); |
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} |
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