| 1 | /* $NetBSD: rijndael-api-fst.h,v 1.8 2007/01/21 23:00:08 cbiere Exp $ */
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| 2 |
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| 3 | /**
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| 4 | * rijndael-api-fst.h
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| 5 | *
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| 6 | * @version 2.9 (December 2000)
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| 7 | *
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| 8 | * Optimised ANSI C code for the Rijndael cipher (now AES)
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| 9 | *
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| 10 | * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
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| 11 | * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
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| 12 | * @author Paulo Barreto <paulo.barreto@terra.com.br>
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| 13 | *
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| 14 | * This code is hereby placed in the public domain.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
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| 17 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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| 18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
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| 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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| 26 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | *
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| 28 | * Acknowledgements:
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| 29 | *
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| 30 | * We are deeply indebted to the following people for their bug reports,
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| 31 | * fixes, and improvement suggestions to this implementation. Though we
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| 32 | * tried to list all contributions, we apologise in advance for any
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| 33 | * missing reference.
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| 34 | *
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| 35 | * Andrew Bales <Andrew.Bales@Honeywell.com>
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| 36 | * Markus Friedl <markus.friedl@informatik.uni-erlangen.de>
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| 37 | * John Skodon <skodonj@webquill.com>
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| 38 | */
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| 39 |
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| 40 | #ifndef __RIJNDAEL_API_FST_H
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| 41 | #define __RIJNDAEL_API_FST_H
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| 42 |
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| 43 | /* Blocksize: 16 * 8 = 128; 128 * 1 = 128 */
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| 44 | #define B_SIZ 16
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| 45 | #define BNUM 1
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| 46 |
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| 47 |
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| 48 | #if defined(UINT32)
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| 49 | typedef unsigned char u8;
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| 50 | typedef UINT32 u32;
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| 51 | #else
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| 52 |
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| 53 | typedef unsigned char u8;
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| 54 | #if defined(HAVE_INT_32)
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| 55 | typedef unsigned int u32;
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| 56 | #elif defined(HAVE_LONG_32)
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| 57 | typedef unsigned long u32;
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| 58 | #elif defined(HAVE_SHORT_32)
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| 59 | typedef unsigned short u32;
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| 60 | #else
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| 61 | #error "No 32 bit integer type found"
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| 62 | #endif
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| 63 |
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| 64 | #endif
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| 65 |
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| 66 | #include "rijndael-alg-fst.h"
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| 67 |
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| 68 | /* Generic Defines */
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| 69 | #define DIR_ENCRYPT 0 /* Are we encrpyting? */
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| 70 | #define DIR_DECRYPT 1 /* Are we decrpyting? */
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| 71 | #define MODE_ECB 1 /* Are we ciphering in ECB mode? */
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| 72 | #define MODE_CBC 2 /* Are we ciphering in CBC mode? */
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| 73 | #define MODE_CFB1 3 /* Are we ciphering in 1-bit CFB mode? */
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| 74 | #ifndef TRUE
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| 75 | #define TRUE 1
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| 76 | #endif
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| 77 | #ifndef FALSE
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| 78 | #define FALSE 0
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| 79 | #endif
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| 80 | #define BITSPERBLOCK 128 /* Default number of bits in a cipher block */
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| 81 |
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| 82 | /* Error Codes */
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| 83 | #define BAD_KEY_DIR -1 /* Key direction is invalid, e.g., unknown value */
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| 84 | #define BAD_KEY_MAT -2 /* Key material not of correct length */
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| 85 | #define BAD_KEY_INSTANCE -3 /* Key passed is not valid */
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| 86 | #define BAD_CIPHER_MODE -4 /* Params struct passed to cipherInit invalid */
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| 87 | #define BAD_CIPHER_STATE -5 /* Cipher in wrong state (e.g., not initialized) */
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| 88 | #define BAD_BLOCK_LENGTH -6
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| 89 | #define BAD_CIPHER_INSTANCE -7
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| 90 | #define BAD_DATA -8 /* Data contents are invalid, e.g., invalid padding */
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| 91 | #define BAD_OTHER -9 /* Unknown error */
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| 92 |
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| 93 | /* Algorithm-specific Defines */
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| 94 | #define RIJNDAEL_MAX_KEY_SIZE 64 /* # of ASCII char's needed to represent a key */
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| 95 | #define RIJNDAEL_MAX_IV_SIZE 16 /* # bytes needed to represent an IV */
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| 96 |
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| 97 | #ifdef SH_ENCRYPT
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| 98 |
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| 99 | /* Typedefs */
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| 100 |
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| 101 | typedef unsigned char BYTE;
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| 102 |
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| 103 | /* The structure for key information */
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| 104 | typedef struct {
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| 105 | u32 rk[4*(RIJNDAEL_MAXNR + 1)]; /* key schedule */
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| 106 | u32 ek[4*(RIJNDAEL_MAXNR + 1)]; /* CFB1 key schedule (encryption only) */
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| 107 | BYTE direction; /* Key used for encrypting or decrypting? */
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| 108 | int keyLen; /* Length of the key */
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| 109 | char keyMaterial[RIJNDAEL_MAX_KEY_SIZE+1]; /* Raw key data in ASCII, e.g., user input or KAT values */
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| 110 | int Nr; /* key-length-dependent number of rounds */
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| 111 | } keyInstance;
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| 112 |
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| 113 | /* The structure for cipher information */
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| 114 | typedef struct { /* changed order of the components */
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| 115 | u32 IV[RIJNDAEL_MAX_IV_SIZE / sizeof(u32)];
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| 116 | /* A possible Initialization Vector for ciphering */
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| 117 | BYTE mode; /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
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| 118 | } cipherInstance;
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| 119 |
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| 120 | /* Function prototypes */
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| 121 |
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| 122 | int rijndael_makeKey(keyInstance *, BYTE, int, const char *);
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| 123 |
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| 124 | int rijndael_cipherInit(cipherInstance *, BYTE, const char *);
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| 125 |
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| 126 | int rijndael_blockEncrypt(cipherInstance *, keyInstance *, const BYTE *, int, BYTE *);
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| 127 |
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| 128 | int rijndael_padEncrypt(cipherInstance *, keyInstance *, const BYTE *, int, BYTE *);
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| 129 |
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| 130 | int rijndael_blockDecrypt(cipherInstance *, keyInstance *, const BYTE *, int, BYTE *);
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| 131 |
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| 132 | int rijndael_padDecrypt(cipherInstance *, keyInstance *, const BYTE *, int, BYTE *);
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| 133 |
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| 134 | /* SH_ENCRYPT */
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| 135 | #endif
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| 136 | #endif /* __RIJNDAEL_API_FST_H */
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