net-snmp 5.7
openssl_aes.h
00001 /* crypto/aes/aes.h -*- mode:C; c-file-style: "eay" -*- */
00002 /* ====================================================================
00003  * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * 1. Redistributions of source code must retain the above copyright
00010  *    notice, this list of conditions and the following disclaimer. 
00011  *
00012  * 2. Redistributions in binary form must reproduce the above copyright
00013  *    notice, this list of conditions and the following disclaimer in
00014  *    the documentation and/or other materials provided with the
00015  *    distribution.
00016  *
00017  * 3. All advertising materials mentioning features or use of this
00018  *    software must display the following acknowledgment:
00019  *    "This product includes software developed by the OpenSSL Project
00020  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
00021  *
00022  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
00023  *    endorse or promote products derived from this software without
00024  *    prior written permission. For written permission, please contact
00025  *    openssl-core@openssl.org.
00026  *
00027  * 5. Products derived from this software may not be called "OpenSSL"
00028  *    nor may "OpenSSL" appear in their names without prior written
00029  *    permission of the OpenSSL Project.
00030  *
00031  * 6. Redistributions of any form whatsoever must retain the following
00032  *    acknowledgment:
00033  *    "This product includes software developed by the OpenSSL Project
00034  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
00035  *
00036  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
00037  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00038  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00039  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
00040  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00041  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00042  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00043  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00044  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
00045  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00046  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
00047  * OF THE POSSIBILITY OF SUCH DAMAGE.
00048  * ====================================================================
00049  *
00050  */
00051 
00052 #ifndef HEADER_AES_H
00053 #define HEADER_AES_H
00054 
00055 #ifdef OPENSSL_NO_AES
00056 #error AES is disabled.
00057 #endif
00058 
00059 #include <stddef.h>
00060 
00061 #define AES_ENCRYPT     1
00062 #define AES_DECRYPT     0
00063 
00064 /* Because array size can't be a const in C, the following two are macros.
00065    Both sizes are in bytes. */
00066 #define AES_MAXNR 14
00067 #define AES_BLOCK_SIZE 16
00068 
00069 #ifdef  __cplusplus
00070 extern "C" {
00071 #endif
00072 
00073 /* This should be a hidden type, but EVP requires that the size be known */
00074 struct aes_key_st {
00075 #ifdef AES_LONG
00076     unsigned long rd_key[4 *(AES_MAXNR + 1)];
00077 #else
00078     unsigned int rd_key[4 *(AES_MAXNR + 1)];
00079 #endif
00080     int rounds;
00081 };
00082 typedef struct aes_key_st AES_KEY;
00083 
00084 const char *AES_options(void);
00085 
00086 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
00087         AES_KEY *key);
00088 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
00089         AES_KEY *key);
00090 
00091 void AES_encrypt(const unsigned char *in, unsigned char *out,
00092         const AES_KEY *key);
00093 void AES_decrypt(const unsigned char *in, unsigned char *out,
00094         const AES_KEY *key);
00095 
00096 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
00097         const AES_KEY *key, const int enc);
00098 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
00099         size_t length, const AES_KEY *key,
00100         unsigned char *ivec, const int enc);
00101 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
00102         size_t length, const AES_KEY *key,
00103         unsigned char *ivec, int *num, const int enc);
00104 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
00105         size_t length, const AES_KEY *key,
00106         unsigned char *ivec, int *num, const int enc);
00107 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
00108         size_t length, const AES_KEY *key,
00109         unsigned char *ivec, int *num, const int enc);
00110 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
00111         size_t length, const AES_KEY *key,
00112         unsigned char *ivec, int *num);
00113 void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
00114         size_t length, const AES_KEY *key,
00115         unsigned char ivec[AES_BLOCK_SIZE],
00116         unsigned char ecount_buf[AES_BLOCK_SIZE],
00117         unsigned int *num);
00118 /* NB: the IV is _two_ blocks long */
00119 void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
00120                      size_t length, const AES_KEY *key,
00121                      unsigned char *ivec, const int enc);
00122 /* NB: the IV is _four_ blocks long */
00123 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
00124                         size_t length, const AES_KEY *key,
00125                         const AES_KEY *key2, const unsigned char *ivec,
00126                         const int enc);
00127 
00128 int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
00129                 unsigned char *out,
00130                 const unsigned char *in, unsigned int inlen);
00131 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
00132                 unsigned char *out,
00133                 const unsigned char *in, unsigned int inlen);
00134 
00135 
00136 #ifdef  __cplusplus
00137 }
00138 #endif
00139 
00140 #endif /* !HEADER_AES_H */