/*  * loki97.h - header file for the LOKI97 AES candidate block cipher.<p> * * LOKI97 was written by Lawrie Brown (ADFA), Josef Pieprzyk, and Jennifer * Seberry (UOW) in 1997.<p> * * <b>Copyright</b> 1998 by <a href="mailto:Lawrie.Brown@adfa.oz.au"> * Lawrie Brown</a> & ITRACE (UNSW). * * based on aes.h - AES Cipher header file for ANSI C Submissions *//* Includes: Standard include files */#include <stdio.h>#include <string.h>/* Defines: AES */#define     DIR_ENCRYPT     0    /*  Are we encrypting?  */#define     DIR_DECRYPT     1    /*  Are we decrypting?  */#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/* 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_CIPHER_INPUT   -6  /*  Cipher input not BLOCK_SIZE multiple *//* 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  *//* Number of bytes in a data-block. */#define	    BLOCK_SIZE		16/* Number of rounds for the algorithm. */#define     ROUNDS		16/* Number of subkeys used by the algorithm. */#define     NUM_SUBKEYS		3*ROUNDS/* Typedefs: */typedef    unsigned char    BYTE;			/* unsigned byte */typedef    struct { unsigned long l,r; } ULONG64;	/* 64bit unsigned int *//*  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 */      /*  The following parameters are algorithm dependent */      ULONG64	SK[NUM_SUBKEYS];	/* LOKI97 subkeys for this key */      } keyInstance;/*  The structure for cipher information */typedef struct {      BYTE  mode;            /* MODE_ECB, MODE_CBC, or MODE_CFB1 */      BYTE  IV[MAX_IV_SIZE]; /* A possible Initialization Vector for       					ciphering */      /*  Add any algorithm specific parameters needed here  */      ULONG64	IVL, IVR;	/* IV packed into 64-bit L & R halves */      int   blockSize;    	/* Sample: Handles non-128 bit block sizes      					(if available) */      } cipherInstance;/*  Function protoypes  */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 blockDecrypt(cipherInstance *cipher, keyInstance *key, BYTE *input,			int inputLen, BYTE *outBuffer);int self_test();