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73 lines
3.0 KiB
C
73 lines
3.0 KiB
C
/* $KAME: rijndael-api-fst.h,v 1.6 2001/05/27 00:23:23 itojun Exp $ */
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/*
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* rijndael-api-fst.h v2.3 April '2000
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*
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* Optimised ANSI C code
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*
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*/
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#ifndef __RIJNDAEL_API_FST_H
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#define __RIJNDAEL_API_FST_H
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#include <crypto/rijndael/rijndael.h>
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/* Generic Defines */
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#define DIR_ENCRYPT 0 /* Are we encrpyting? */
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#define DIR_DECRYPT 1 /* Are we decrpyting? */
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#define MODE_ECB 1 /* Are we ciphering in ECB mode? */
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#define MODE_CBC 2 /* Are we ciphering in CBC mode? */
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#define MODE_CFB1 3 /* Are we ciphering in 1-bit CFB mode? */
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#define BITSPERBLOCK 128 /* Default number of bits in a cipher block */
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/* Error Codes */
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#define BAD_KEY_DIR -1 /* Key direction is invalid, e.g., unknown value */
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#define BAD_KEY_MAT -2 /* Key material not of correct length */
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#define BAD_KEY_INSTANCE -3 /* Key passed is not valid */
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#define BAD_CIPHER_MODE -4 /* Params struct passed to cipherInit invalid */
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#define BAD_CIPHER_STATE -5 /* Cipher in wrong state (e.g., not initialized) */
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#define BAD_BLOCK_LENGTH -6
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#define BAD_CIPHER_INSTANCE -7
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#define BAD_DATA -8 /* Data contents are invalid, e.g., invalid padding */
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#define BAD_OTHER -9 /* Unknown error */
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/* Algorithm-specific Defines */
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#define RIJNDAEL_MAX_KEY_SIZE 64 /* # of ASCII char's needed to represent a key */
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#define RIJNDAEL_MAX_IV_SIZE 16 /* # bytes needed to represent an IV */
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/* Typedefs */
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/* The structure for key information */
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typedef struct {
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uint8_t direction; /* Key used for encrypting or decrypting? */
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int keyLen; /* Length of the key */
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char keyMaterial[RIJNDAEL_MAX_KEY_SIZE+1]; /* Raw key data in ASCII, e.g., user input or KAT values */
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int Nr; /* key-length-dependent number of rounds */
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uint32_t rk[4*(RIJNDAEL_MAXNR + 1)]; /* key schedule */
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uint32_t ek[4*(RIJNDAEL_MAXNR + 1)]; /* CFB1 key schedule (encryption only) */
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} keyInstance;
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/* The structure for cipher information */
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typedef struct { /* changed order of the components */
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uint8_t mode; /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
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uint8_t IV[RIJNDAEL_MAX_IV_SIZE]; /* A possible Initialization Vector for ciphering */
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} cipherInstance;
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/* Function prototypes */
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int rijndael_makeKey(keyInstance *, uint8_t, int, const char *);
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int rijndael_cipherInit(cipherInstance *, uint8_t, char *);
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int rijndael_blockEncrypt(cipherInstance *, keyInstance *, const uint8_t *,
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int, uint8_t *);
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int rijndael_padEncrypt(cipherInstance *, keyInstance *, const uint8_t *,
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int, uint8_t *);
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int rijndael_blockDecrypt(cipherInstance *, keyInstance *, const uint8_t *,
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int, uint8_t *);
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int rijndael_padDecrypt(cipherInstance *, keyInstance *, const uint8_t *,
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int, uint8_t *);
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#endif /* __RIJNDAEL_API_FST_H */
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