| /* $OpenBSD: rijndael.h,v 1.13 2008/06/09 07:49:45 djm Exp $ */ |
| |
| /** |
| * rijndael-alg-fst.h |
| * |
| * @version 3.0 (December 2000) |
| * |
| * Optimised ANSI C code for the Rijndael cipher (now AES) |
| * |
| * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be> |
| * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be> |
| * @author Paulo Barreto <paulo.barreto@terra.com.br> |
| * |
| * This code is hereby placed in the public domain. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS |
| * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #ifndef __RIJNDAEL_H |
| #define __RIJNDAEL_H |
| |
| #include <stdint.h> |
| |
| #define AES_MAXKEYBITS (256) |
| #define AES_MAXKEYBYTES (AES_MAXKEYBITS/8) |
| /* for 256-bit keys we need 14 rounds for a 128 we only need 10 round */ |
| #define AES_MAXROUNDS 10 |
| |
| /* bergmann: to avoid conflicts with typedefs from certain Contiki platforms, |
| * the following type names have been prefixed with "aes_": */ |
| typedef unsigned char u_char; |
| typedef uint8_t aes_u8; |
| typedef uint16_t aes_u16; |
| typedef uint32_t aes_u32; |
| |
| /* The structure for key information */ |
| typedef struct { |
| #ifdef WITH_AES_DECRYPT |
| int enc_only; /* context contains only encrypt schedule */ |
| #endif |
| int Nr; /* key-length-dependent number of rounds */ |
| aes_u32 ek[4*(AES_MAXROUNDS + 1)]; /* encrypt key schedule */ |
| #ifdef WITH_AES_DECRYPT |
| aes_u32 dk[4*(AES_MAXROUNDS + 1)]; /* decrypt key schedule */ |
| #endif |
| } rijndael_ctx; |
| |
| int rijndael_set_key(rijndael_ctx *, const u_char *, int); |
| int rijndael_set_key_enc_only(rijndael_ctx *, const u_char *, int); |
| void rijndael_decrypt(rijndael_ctx *, const u_char *, u_char *); |
| void rijndael_encrypt(rijndael_ctx *, const u_char *, u_char *); |
| |
| int rijndaelKeySetupEnc(aes_u32 rk[/*4*(Nr + 1)*/], const aes_u8 cipherKey[], int keyBits); |
| int rijndaelKeySetupDec(aes_u32 rk[/*4*(Nr + 1)*/], const aes_u8 cipherKey[], int keyBits); |
| void rijndaelEncrypt(const aes_u32 rk[/*4*(Nr + 1)*/], int Nr, const aes_u8 pt[16], aes_u8 ct[16]); |
| |
| #endif /* __RIJNDAEL_H */ |
