AES-algorithm-in-c/aes.h at master · NikosDls/AES-algorithm-in-c · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
#ifndef AES_H
#define AES_H

// AES 128bit = 16 bytes
#define BYTES 16

// block size is 128 bits = 16 bytes
// so we need 4x4 blocks
#define BLOCK_SIZE 4

// aes functions prototypes
void key_schedule(unsigned int [], unsigned int [][BLOCK_SIZE]);
void add_roundkey(unsigned int [][BLOCK_SIZE], unsigned int [][BLOCK_SIZE], unsigned int [][BLOCK_SIZE]);

unsigned int sub_byte(unsigned int, unsigned int);
void shift_rows(unsigned int [][BLOCK_SIZE]);
void mix_columns(unsigned int [][BLOCK_SIZE], unsigned int [][BLOCK_SIZE]);
void encryption(unsigned int [][BLOCK_SIZE], unsigned int []);

unsigned int inv_sub_byte(unsigned int, unsigned int);
void inv_shift_rows(unsigned int [][BLOCK_SIZE]);
void inv_mix_columns(unsigned int [][BLOCK_SIZE], unsigned int [][BLOCK_SIZE]);
void decryption(unsigned int [][BLOCK_SIZE], unsigned int []);

// secondary functions
int hexCharToDec(char);
void get2Bytes(unsigned int, unsigned int *, unsigned int *);
void getRoundKey(unsigned int [], unsigned int [][BLOCK_SIZE], int);
unsigned int gfMul(unsigned int, unsigned int);
void convertStringToBlock(char [], unsigned int [][BLOCK_SIZE]);
void convertBlockToString(unsigned int [][BLOCK_SIZE], char []);

void printArray(unsigned int [][BLOCK_SIZE]);

void test();

#endif //AES_H