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Diffstat (limited to 'scripts/conf-w32brg/aes.h')
-rw-r--r-- | scripts/conf-w32brg/aes.h | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/scripts/conf-w32brg/aes.h b/scripts/conf-w32brg/aes.h new file mode 100644 index 000000000..df2d8ceb7 --- /dev/null +++ b/scripts/conf-w32brg/aes.h @@ -0,0 +1,218 @@ +/* + --------------------------------------------------------------------------- + Copyright (c) 2003, Dr Brian Gladman, 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. + + ALTERNATIVELY, provided that this notice is retained in full, this product + may be distributed under the terms of the GNU General Public License (GPL), + in which case the provisions of the GPL apply INSTEAD OF those given above. + + 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/or fitness for purpose. + --------------------------------------------------------------------------- + Issue 30/06/2004 + + This file contains the definitions required to use AES in C. See aesopt.h + for optimisation details. +*/ + +#ifndef _AES_H +#define _AES_H + +/* This include is used to find 8 & 32 bit unsigned integer types */ +#include "limits.h" + +#if defined(__cplusplus) +extern "C" +{ +#endif + +#define AES_128 /* define if AES with 128 bit keys is needed */ +#define AES_192 /* define if AES with 192 bit keys is needed */ +#define AES_256 /* define if AES with 256 bit keys is needed */ +#define AES_VAR /* define if a variable key size is needed */ +#define AES_MODES /* define if support is needed for modes */ + +/* The following must also be set in assembler files if being used */ + +#define AES_ENCRYPT /* if support for encryption is needed */ +#define AES_DECRYPT /* if support for decryption is needed */ +#define AES_ERR_CHK /* for parameter checks & error return codes */ +#define AES_REV_DKS /* define to reverse decryption key schedule */ + +#if UCHAR_MAX == 0xff /* an unsigned 8 bit type */ + typedef unsigned char aes_08t; +#else +# error Please define aes_08t as an 8-bit unsigned integer type in aes.h +#endif + +#if UINT_MAX == 4294967295 /* an unsigned 32 bit type */ + typedef unsigned int aes_32t; +#elif ULONG_MAX == 4294967295ul + typedef unsigned long aes_32t; +#else +# error Please define aes_32t as a 32-bit unsigned integer type in aes.h +#endif + +#define AES_BLOCK_SIZE 16 /* the AES block size in bytes */ +#define N_COLS 4 /* the number of columns in the state */ + +/* The key schedule length is 11, 13 or 15 16-byte blocks for 128, */ +/* 192 or 256-bit keys respectively. That is 176, 208 or 240 bytes */ +/* or 44, 52 or 60 32-bit words. For simplicity this code allocates */ +/* the maximum 60 word array for the key schedule for all key sizes */ + +#if defined( AES_VAR ) || defined( AES_256 ) +#define KS_LENGTH 60 +#elif defined( AES_192 ) +#define KS_LENGTH 52 +#else +#define KS_LENGTH 44 +#endif + +#if defined( AES_ERR_CHK ) +#define aes_ret int +#define aes_good 0 +#define aes_error -1 +#else +#define aes_ret void +#endif + +#if !defined( AES_DLL ) /* implement normal or DLL functions */ +#define aes_rval aes_ret +#else +#define aes_rval aes_ret __declspec(dllexport) _stdcall +#endif + +/* the character array 'inf' in the following structures is used */ +/* to hold AES context information. This AES code uses cx->inf.b[0] */ +/* to hold the number of rounds multiplied by 16. The other three */ +/* elements can be used by code that implements additional modes */ + +typedef union +{ aes_32t l; + aes_08t b[4]; +} aes_inf; + +typedef struct +{ aes_32t ks[KS_LENGTH]; + aes_inf inf; +} aes_encrypt_ctx; + +typedef struct +{ aes_32t ks[KS_LENGTH]; + aes_inf inf; +} aes_decrypt_ctx; + +/* This routine must be called before first use if non-static */ +/* tables are being used */ + +aes_rval gen_tabs(void); + +/* The key length (klen) is input in bytes when it is in the range */ +/* 16 <= klen <= 32 or in bits when in the range 128 <= klen <= 256 */ + +#if defined( AES_ENCRYPT ) + +#if defined(AES_128) || defined(AES_VAR) +aes_rval aes_encrypt_key128(const unsigned char *key, aes_encrypt_ctx cx[1]); +#endif + +#if defined(AES_192) || defined(AES_VAR) +aes_rval aes_encrypt_key192(const unsigned char *key, aes_encrypt_ctx cx[1]); +#endif + +#if defined(AES_256) || defined(AES_VAR) +aes_rval aes_encrypt_key256(const unsigned char *key, aes_encrypt_ctx cx[1]); +#endif + +#if defined(AES_VAR) +aes_rval aes_encrypt_key(const unsigned char *key, int key_len, aes_encrypt_ctx cx[1]); +#endif + +aes_rval aes_encrypt(const unsigned char *in, unsigned char *out, const aes_encrypt_ctx cx[1]); + +#endif + +#if defined( AES_DECRYPT ) + +#if defined(AES_128) || defined(AES_VAR) +aes_rval aes_decrypt_key128(const unsigned char *key, aes_decrypt_ctx cx[1]); +#endif + +#if defined(AES_192) || defined(AES_VAR) +aes_rval aes_decrypt_key192(const unsigned char *key, aes_decrypt_ctx cx[1]); +#endif + +#if defined(AES_256) || defined(AES_VAR) +aes_rval aes_decrypt_key256(const unsigned char *key, aes_decrypt_ctx cx[1]); +#endif + +#if defined(AES_VAR) +aes_rval aes_decrypt_key(const unsigned char *key, int key_len, aes_decrypt_ctx cx[1]); +#endif + +aes_rval aes_decrypt(const unsigned char *in, unsigned char *out, const aes_decrypt_ctx cx[1]); + +#endif + +#if defined(AES_MODES) + +aes_rval aes_ecb_encrypt(const unsigned char *ibuf, unsigned char *obuf, + int len, const aes_encrypt_ctx cx[1]); + +aes_rval aes_ecb_decrypt(const unsigned char *ibuf, unsigned char *obuf, + int len, const aes_decrypt_ctx cx[1]); + +aes_rval aes_cbc_encrypt(const unsigned char *ibuf, unsigned char *obuf, + int len, unsigned char *iv, const aes_encrypt_ctx cx[1]); + +aes_rval aes_cbc_decrypt(const unsigned char *ibuf, unsigned char *obuf, + int len, unsigned char *iv, const aes_decrypt_ctx cx[1]); + +aes_rval aes_mode_reset(aes_encrypt_ctx cx[1]); + +aes_rval aes_cfb_encrypt(const unsigned char *ibuf, unsigned char *obuf, + int len, unsigned char *iv, aes_encrypt_ctx cx[1]); + +aes_rval aes_cfb_decrypt(const unsigned char *ibuf, unsigned char *obuf, + int len, unsigned char *iv, aes_encrypt_ctx cx[1]); + +#define aes_ofb_encrypt aes_ofb_crypt +#define aes_ofb_decrypt aes_ofb_crypt + +aes_rval aes_ofb_crypt(const unsigned char *ibuf, unsigned char *obuf, + int len, unsigned char *iv, aes_encrypt_ctx cx[1]); + +typedef void cbuf_inc(unsigned char *cbuf); + +#define aes_ctr_encrypt aes_ctr_crypt +#define aes_ctr_decrypt aes_ctr_crypt + +aes_rval aes_ctr_crypt(const unsigned char *ibuf, unsigned char *obuf, + int len, unsigned char *cbuf, cbuf_inc ctr_inc, aes_encrypt_ctx cx[1]); + +#endif + +#if defined(__cplusplus) +} +#endif + +#endif |