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Diffstat (limited to 'CPP/7zip/Crypto/AES/aes.h')
-rwxr-xr-x | CPP/7zip/Crypto/AES/aes.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/CPP/7zip/Crypto/AES/aes.h b/CPP/7zip/Crypto/AES/aes.h new file mode 100755 index 00000000..9aaba978 --- /dev/null +++ b/CPP/7zip/Crypto/AES/aes.h @@ -0,0 +1,103 @@ +/* + ------------------------------------------------------------------------- + Copyright (c) 2001, Dr Brian Gladman <brg@gladman.me.uk>, Worcester, UK. + All rights reserved. + + LICENSE TERMS + + The free distribution and use of this software in both source and binary + form is allowed (with or without changes) provided that: + + 1. distributions of this source code include the above copyright + notice, this list of conditions and the following disclaimer; + + 2. distributions in binary form include the above copyright + notice, this list of conditions and the following disclaimer + in the documentation and/or other associated materials; + + 3. the copyright holder's name is not used to endorse products + built using this software without specific written permission. + + DISCLAIMER + + This software is provided 'as is' with no explicit or implied warranties + in respect of its properties, including, but not limited to, correctness + and fitness for purpose. + ------------------------------------------------------------------------- + Issue Date: 29/07/2002 + + This file contains the definitions required to use AES (Rijndael) in C. +*/ + +#ifndef _AES_H +#define _AES_H + +/* This include is used only to find 8 and 32 bit unsigned integer types */ + +#include "limits.h" + +#if UCHAR_MAX == 0xff /* an unsigned 8 bit type for internal AES use */ + typedef unsigned char aes_08t; +#else +#error Please define an unsigned 8 bit type in aes.h +#endif + +#if UINT_MAX == 0xffffffff /* an unsigned 32 bit type for internal AES use */ + typedef unsigned int aes_32t; +#elif ULONG_MAX == 0xffffffff + typedef unsigned long aes_32t; +#else +#error Please define an unsigned 32 bit type in aes.h +#endif + +/* BLOCK_SIZE is in BYTES: 16, 24, 32 or undefined for aes.c and 16, 20, + 24, 28, 32 or undefined for aespp.c. When left undefined a slower + version that provides variable block length is compiled. +*/ + +#define BLOCK_SIZE 16 + +/* key schedule length (in 32-bit words) */ + +#if !defined(BLOCK_SIZE) +#define KS_LENGTH 128 +#else +#define KS_LENGTH 4 * BLOCK_SIZE +#endif + +#if defined(__cplusplus) +extern "C" +{ +#endif + +typedef unsigned int aes_fret; /* type for function return value */ +#define aes_bad 0 /* bad function return value */ +#define aes_good 1 /* good function return value */ +#ifndef AES_DLL /* implement normal or DLL functions */ +#define aes_rval aes_fret +#else +#define aes_rval aes_fret __declspec(dllexport) _stdcall +#endif + + +typedef struct /* the AES context for encryption */ +{ aes_32t k_sch[KS_LENGTH]; /* the encryption key schedule */ + aes_32t n_rnd; /* the number of cipher rounds */ + aes_32t n_blk; /* the number of bytes in the state */ +} aes_ctx; + +#if !defined(BLOCK_SIZE) +aes_rval aes_blk_len(unsigned int blen, aes_ctx cx[1]); +#endif + +aes_rval aes_enc_key(const unsigned char in_key[], unsigned int klen, aes_ctx cx[1]); +aes_rval aes_enc_blk(const unsigned char in_blk[], unsigned char out_blk[], const aes_ctx cx[1]); + +aes_rval aes_dec_key(const unsigned char in_key[], unsigned int klen, aes_ctx cx[1]); +aes_rval aes_dec_blk(const unsigned char in_blk[], unsigned char out_blk[], const aes_ctx cx[1]); + +#if defined(__cplusplus) +} +#endif + +#endif |