rijndael-api-fst.h
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- /**
- * rijndael-api-fst.h
- * You're probably looking for aes-cfb.h, which is easier to use.
- *
- * @version 2.9 (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.
- *
- * Acknowledgements:
- *
- * We are deeply indebted to the following people for their bug reports,
- * fixes, and improvement suggestions to this implementation. Though we
- * tried to list all contributions, we apologise in advance for any
- * missing reference.
- *
- * Andrew Bales <Andrew.Bales@Honeywell.com>
- * Markus Friedl <markus.friedl@informatik.uni-erlangen.de>
- * John Skodon <skodonj@webquill.com>
- */
- #ifndef __RIJNDAEL_API_FST_H
- #define __RIJNDAEL_API_FST_H
- #include <stdio.h>
- #include "rijndael-alg-fst.h"
- /* Generic Defines */
- #define DIR_ENCRYPT 0 /* Are we encrpyting? */
- #define DIR_DECRYPT 1 /* Are we decrpyting? */
- #define MODE_ECB 1 /* Are we ciphering in ECB mode? */
- #define MODE_CBC 2 /* Are we ciphering in CBC mode? */
- #define MODE_CFB1 3 /* Are we ciphering in 1-bit CFB mode? */
- #define TRUE 1
- #define FALSE 0
- #define BITSPERBLOCK 128 /* Default number of bits in a cipher block */
- /* Error Codes */
- #define BAD_KEY_DIR -1 /* Key direction is invalid, e.g., unknown value */
- #define BAD_KEY_MAT -2 /* Key material not of correct length */
- #define BAD_KEY_INSTANCE -3 /* Key passed is not valid */
- #define BAD_CIPHER_MODE -4 /* Params struct passed to cipherInit invalid */
- #define BAD_CIPHER_STATE -5 /* Cipher in wrong state (e.g., not initialized) */
- #define BAD_BLOCK_LENGTH -6
- #define BAD_CIPHER_INSTANCE -7
- #define BAD_DATA -8 /* Data contents are invalid, e.g., invalid padding */
- #define BAD_OTHER -9 /* Unknown error */
- /* Algorithm-specific Defines */
- #define MAX_KEY_SIZE 64 /* # of ASCII char's needed to represent a key */
- #define MAX_IV_SIZE 16 /* # bytes needed to represent an IV */
- /* Typedefs */
- typedef unsigned char BYTE;
- /* The structure for key information */
- typedef struct {
- BYTE direction; /* Key used for encrypting or decrypting? */
- int keyLen; /* Length of the key */
- char keyMaterial[MAX_KEY_SIZE+1]; /* Raw key data in ASCII, e.g., user input or KAT values */
- int Nr; /* key-length-dependent number of rounds */
- u32 rk[4*(MAXNR + 1)]; /* key schedule */
- u32 ek[4*(MAXNR + 1)]; /* CFB1 key schedule (encryption only) */
- } keyInstance;
- /* The structure for cipher information */
- typedef struct { /* changed order of the components */
- BYTE mode; /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
- BYTE IV[MAX_IV_SIZE]; /* A possible Initialization Vector for ciphering */
- } cipherInstance;
- /* Function prototypes */
- int makeKey(keyInstance *key, BYTE direction, int keyLen, char *keyMaterial);
- int cipherInit(cipherInstance *cipher, BYTE mode, char *IV);
- int blockEncrypt(cipherInstance *cipher, keyInstance *key,
- BYTE *input, int inputLen, BYTE *outBuffer);
- int padEncrypt(cipherInstance *cipher, keyInstance *key,
- BYTE *input, int inputOctets, BYTE *outBuffer);
- int blockDecrypt(cipherInstance *cipher, keyInstance *key,
- BYTE *input, int inputLen, BYTE *outBuffer);
- int padDecrypt(cipherInstance *cipher, keyInstance *key,
- BYTE *input, int inputOctets, BYTE *outBuffer);
- #ifdef INTERMEDIATE_VALUE_KAT
- int cipherUpdateRounds(cipherInstance *cipher, keyInstance *key,
- BYTE *input, int inputLen, BYTE *outBuffer, int Rounds);
- #endif /* INTERMEDIATE_VALUE_KAT */
- #endif /* __RIJNDAEL_API_FST_H */