1 /* $KAME: rijndael-api-fst.h,v 1.6 2001/05/27 00:23:23 itojun Exp $ */ 2 3 /* 4 * rijndael-api-fst.h v2.3 April '2000 5 * 6 * Optimised ANSI C code 7 * 8 */ 9 10 #ifndef __RIJNDAEL_API_FST_H 11 #define __RIJNDAEL_API_FST_H 12 13 #include <crypto/rijndael/rijndael.h> 14 15 /* Generic Defines */ 16 #define DIR_ENCRYPT 0 /* Are we encrpyting? */ 17 #define DIR_DECRYPT 1 /* Are we decrpyting? */ 18 #define MODE_ECB 1 /* Are we ciphering in ECB mode? */ 19 #define MODE_CBC 2 /* Are we ciphering in CBC mode? */ 20 #define MODE_CFB1 3 /* Are we ciphering in 1-bit CFB mode? */ 21 #define BITSPERBLOCK 128 /* Default number of bits in a cipher block */ 22 23 /* Error Codes */ 24 #define BAD_KEY_DIR -1 /* Key direction is invalid, e.g., unknown value */ 25 #define BAD_KEY_MAT -2 /* Key material not of correct length */ 26 #define BAD_KEY_INSTANCE -3 /* Key passed is not valid */ 27 #define BAD_CIPHER_MODE -4 /* Params struct passed to cipherInit invalid */ 28 #define BAD_CIPHER_STATE -5 /* Cipher in wrong state (e.g., not initialized) */ 29 #define BAD_BLOCK_LENGTH -6 30 #define BAD_CIPHER_INSTANCE -7 31 #define BAD_DATA -8 /* Data contents are invalid, e.g., invalid padding */ 32 #define BAD_OTHER -9 /* Unknown error */ 33 34 /* Algorithm-specific Defines */ 35 #define RIJNDAEL_MAX_KEY_SIZE 64 /* # of ASCII char's needed to represent a key */ 36 #define RIJNDAEL_MAX_IV_SIZE 16 /* # bytes needed to represent an IV */ 37 38 /* Typedefs */ 39 40 /* The structure for key information */ 41 typedef struct { 42 uint8_t direction; /* Key used for encrypting or decrypting? */ 43 int keyLen; /* Length of the key */ 44 char keyMaterial[RIJNDAEL_MAX_KEY_SIZE+1]; /* Raw key data in ASCII, e.g., user input or KAT values */ 45 int Nr; /* key-length-dependent number of rounds */ 46 uint32_t rk[4*(RIJNDAEL_MAXNR + 1)]; /* key schedule */ 47 uint32_t ek[4*(RIJNDAEL_MAXNR + 1)]; /* CFB1 key schedule (encryption only) */ 48 } keyInstance; 49 50 /* The structure for cipher information */ 51 typedef struct { /* changed order of the components */ 52 uint8_t mode; /* MODE_ECB, MODE_CBC, or MODE_CFB1 */ 53 uint8_t IV[RIJNDAEL_MAX_IV_SIZE]; /* A possible Initialization Vector for ciphering */ 54 } cipherInstance; 55 56 /* Function prototypes */ 57 58 int rijndael_makeKey(keyInstance *, uint8_t, int, const char *); 59 60 int rijndael_cipherInit(cipherInstance *, uint8_t, char *); 61 62 int rijndael_blockEncrypt(cipherInstance *, keyInstance *, const uint8_t *, 63 int, uint8_t *); 64 int rijndael_padEncrypt(cipherInstance *, keyInstance *, const uint8_t *, 65 int, uint8_t *); 66 67 int rijndael_blockDecrypt(cipherInstance *, keyInstance *, const uint8_t *, 68 int, uint8_t *); 69 int rijndael_padDecrypt(cipherInstance *, keyInstance *, const uint8_t *, 70 int, uint8_t *); 71 72 #endif /* __RIJNDAEL_API_FST_H */ 73