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1 | /* |
2 | * AES Cryptographic Algorithm Header File. Include this header file in |
3 | * your source which uses these given APIs. (This source is kept under |
4 | * public domain) |
5 | */ |
6 | |
7 | // AES context structure |
8 | typedef struct { |
9 | unsigned int Ek[60]; |
10 | unsigned int Dk[60]; |
11 | unsigned int Iv[4]; |
12 | unsigned char Nr; |
13 | unsigned char Mode; |
14 | } AesCtx; |
15 | |
16 | // key length in bytes |
17 | #define KEY128 16 |
18 | #define KEY192 24 |
19 | #define KEY256 32 |
20 | // block size in bytes |
21 | #define BLOCKSZ 16 |
22 | // mode |
23 | #define EBC 0 |
24 | #define CBC 1 |
25 | |
26 | // AES API function prototype |
27 | |
28 | int AesCtxIni(AesCtx *pCtx, unsigned char *pIV, unsigned char *pKey, unsigned int KeyLen, unsigned char Mode); |
29 | int AesEncrypt(AesCtx *pCtx, unsigned char *pData, unsigned char *pCipher, unsigned int DataLen); |
30 | int AesDecrypt(AesCtx *pCtx, unsigned char *pCipher, unsigned char *pData, unsigned int CipherLen); |