mirror of
https://github.com/DarkflameUniverse/DarkflameServer.git
synced 2024-11-10 02:08:20 +00:00
126 lines
4.5 KiB
C
126 lines
4.5 KiB
C
/// \file
|
|
/// \brief \b [Internal] AES encoding / decoding
|
|
/// rijndael-alg-fst.h v2.0 August '99
|
|
/// Optimised ANSI C code
|
|
/// taken from the 'aescrypt' project: www.sf.net/projects/aescrypt
|
|
/// See LICENSE-EST for the license applicable to this file
|
|
|
|
|
|
/// \note Although the routines claim to support 192 and 256 bit blocks,
|
|
/// don't take your chances - stick to the 128 bit (16 byte) blocks unless
|
|
/// you've run tests to prove that 192 and 256 are correctly supported.
|
|
/// - Cirilo
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#ifndef __RIJNDAEL_ALG_H
|
|
#define __RIJNDAEL_ALG_H
|
|
|
|
#define MAXKC (256/32)
|
|
#define MAXROUNDS 14
|
|
|
|
typedef unsigned char word8;
|
|
typedef unsigned short word16;
|
|
typedef unsigned int word32;
|
|
|
|
int rijndaelKeySched (word8 k[MAXKC][4], int keyBits,
|
|
word8 rk[MAXROUNDS+1][4][4]);
|
|
int rijndaelKeyEnctoDec (int keyBits, word8 W[MAXROUNDS+1][4][4]);
|
|
int rijndaelEncrypt (word8 a[16], word8 b[16],
|
|
word8 rk[MAXROUNDS+1][4][4]);
|
|
int rijndaelEncryptRound (word8 a[4][4],
|
|
word8 rk[MAXROUNDS+1][4][4], int rounds);
|
|
int rijndaelDecrypt (word8 a[16], word8 b[16],
|
|
word8 rk[MAXROUNDS+1][4][4]);
|
|
int rijndaelDecryptRound (word8 a[4][4],
|
|
word8 rk[MAXROUNDS+1][4][4], int rounds);
|
|
|
|
#endif
|
|
|
|
// End of algorithm headers. begin the AES API header defs
|
|
|
|
|
|
#ifndef __RIJNDAEL_API_H
|
|
#define __RIJNDAEL_API_H
|
|
|
|
// rijndael-api-fst.h v2.0 August '99
|
|
// Optimised ANSI C code
|
|
|
|
|
|
// Defines:
|
|
// Add any additional defines you need
|
|
|
|
|
|
#define DIR_ENCRYPT 0 // Are we encrpyting?
|
|
#define DIR_DECRYPT 1 // Are we decrpyting?
|
|
#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?
|
|
#ifndef TRUE
|
|
#define TRUE 1
|
|
#endif
|
|
#ifndef FALSE
|
|
#define FALSE 0
|
|
#endif
|
|
#define BITSPERBLOCK 128 // Default number of bits in a cipher block
|
|
|
|
// Error Codes - CHANGE POSSIBLE: inclusion of additional 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_BLOCK_LENGTH -6
|
|
#define BAD_CIPHER_INSTANCE -7
|
|
|
|
|
|
// CHANGE POSSIBLE: inclusion of algorithm specific defines
|
|
// 14.Dec.2005 Cirilo: keys are now unsigned char rather than hex (ASCII)
|
|
#define MAX_KEY_SIZE 32 // # of unsigned char's needed to represent a key
|
|
#define MAX_IV_SIZE 16 // # bytes needed to represent an IV
|
|
|
|
// Typedefs:
|
|
// Typedef'ed data storage elements. Add any algorithm specific parameters at the bottom of the structs as appropriate.
|
|
|
|
typedef unsigned char BYTE;
|
|
|
|
// 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, replace or add as necessary
|
|
int blockLen; /// block length
|
|
word8 keySched[MAXROUNDS+1][4][4]; /// key schedule
|
|
} keyInstance;
|
|
|
|
// The structure for cipher information
|
|
typedef struct { // changed order of the components
|
|
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
|
|
int blockLen; /// Sample: Handles non-128 bit block sizes (if available)
|
|
} cipherInstance;
|
|
|
|
|
|
// Function protoypes
|
|
// CHANGED: makeKey(): parameter blockLen added this parameter is absolutely necessary if you want to
|
|
// setup the round keys in a variable block length setting
|
|
// cipherInit(): parameter blockLen added (for obvious reasons)
|
|
|
|
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 cipherUpdateRounds(cipherInstance *cipher, keyInstance *key, BYTE *input,
|
|
int inputLen, BYTE *outBuffer, int Rounds);
|
|
|
|
|
|
#endif // __RIJNDAEL_API_H
|