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103 lines
4.4 KiB
C
103 lines
4.4 KiB
C
/* $FreeBSD$ */
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/* $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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* #define INTERMEDIATE_VALUE_KAT to generate the Intermediate Value Known Answer Test.
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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-alg-fst.h>
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/* Defines:
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Add any additional defines you need
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*/
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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 - CHANGE POSSIBLE: inclusion of additional 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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/* CHANGE POSSIBLE: inclusion of algorithm specific defines */
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#define MAX_KEY_SIZE 64 /* # of ASCII char's needed to represent a key */
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#define MAX_IV_SIZE 16 /* # bytes needed to represent an IV */
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/* Typedefs:
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Typedef'ed data storage elements. Add any algorithm specific
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parameters at the bottom of the structs as appropriate.
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*/
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/* The structure for key information */
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typedef struct {
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u_int8_t direction; /* Key used for encrypting or decrypting? */
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int keyLen; /* Length of the key */
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char keyMaterial[MAX_KEY_SIZE+1]; /* Raw key data in ASCII, e.g., user input or KAT values */
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/* The following parameters are algorithm dependent, replace or add as necessary */
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int ROUNDS; /* key-length-dependent number of rounds */
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int blockLen; /* block length */
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union {
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u_int8_t xkS8[RIJNDAEL_MAXROUNDS+1][4][4]; /* key schedule */
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u_int32_t xkS32[RIJNDAEL_MAXROUNDS+1][4]; /* key schedule */
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} xKeySched;
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#define keySched xKeySched.xkS8
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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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u_int8_t mode; /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
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u_int8_t IV[MAX_IV_SIZE]; /* A possible Initialization Vector for ciphering */
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/* Add any algorithm specific parameters needed here */
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int blockLen; /* Sample: Handles non-128 bit block sizes (if available) */
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} cipherInstance;
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/* Function prototypes */
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/* CHANGED: nothing
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TODO: implement the following extensions to setup 192-bit and 256-bit block lengths:
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makeKeyEx(): parameter blockLen added
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-- this parameter is absolutely necessary if you want to
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setup the round keys in a variable block length setting
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cipherInitEx(): parameter blockLen added (for obvious reasons)
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*/
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int rijndael_makeKey(keyInstance *key, u_int8_t direction, int keyLen, char *keyMaterial);
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int rijndael_cipherInit(cipherInstance *cipher, u_int8_t mode, char *IV);
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int rijndael_blockEncrypt(cipherInstance *cipher, keyInstance *key,
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u_int8_t *input, int inputLen, u_int8_t *outBuffer);
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int rijndael_padEncrypt(cipherInstance *cipher, keyInstance *key,
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u_int8_t *input, int inputOctets, u_int8_t *outBuffer);
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int rijndael_blockDecrypt(cipherInstance *cipher, keyInstance *key,
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u_int8_t *input, int inputLen, u_int8_t *outBuffer);
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int rijndael_padDecrypt(cipherInstance *cipher, keyInstance *key,
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u_int8_t *input, int inputOctets, u_int8_t *outBuffer);
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#ifdef INTERMEDIATE_VALUE_KAT
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int rijndael_cipherUpdateRounds(cipherInstance *cipher, keyInstance *key,
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u_int8_t *input, int inputLen, u_int8_t *outBuffer, int Rounds);
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#endif /* INTERMEDIATE_VALUE_KAT */
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#endif /* __RIJNDAEL_API_FST_H */
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