1 #ifndef _RIJNDAEL_H_
2 #define _RIJNDAEL_H_
3 
4 /**************************************************************************
5  * This code is based on Szymon Stefanek AES implementation:              *
6  * http://www.esat.kuleuven.ac.be/~rijmen/rijndael/rijndael-cpplib.tar.gz *
7  *                                                                        *
8  * Dynamic tables generation is based on the Brian Gladman's work:        *
9  * http://fp.gladman.plus.com/cryptography_technology/rijndael            *
10  **************************************************************************/
11 
12 #define _MAX_KEY_COLUMNS (256/32)
13 #define _MAX_ROUNDS      14
14 #define MAX_IV_SIZE      16
15 
16 class Rijndael
17 {
18   private:
19 #ifdef OPENSSL_AES
20 #if OPENSSL_VERSION_NUMBER < 0x10100000L
21     EVP_CIPHER_CTX ctx;
22 #else
23     EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
24 #endif
25 #else // OPENSSL_AES
26 #ifdef USE_SSE
27     void blockEncryptSSE(const byte *input,size_t numBlocks,byte *outBuffer);
28     void blockDecryptSSE(const byte *input, size_t numBlocks, byte *outBuffer);
29 
30     bool AES_NI;
31 #endif
32     void keySched(byte key[_MAX_KEY_COLUMNS][4]);
33     void keyEncToDec();
34     void GenerateTables();
35 #endif // OPENSSL_AES
36 
37     // RAR always uses CBC, but we may need to turn it off when calling
38     // this code from other archive formats with CTR and other modes.
39     bool     CBCMode;
40 
41     int      m_uRounds;
42     byte     m_initVector[MAX_IV_SIZE];
43     byte     m_expandedKey[_MAX_ROUNDS+1][4][4];
44   public:
45     Rijndael();
46     void Init(bool Encrypt,const byte *key,uint keyLen,const byte *initVector);
47     void blockEncrypt(const byte *input, size_t inputLen, byte *outBuffer);
48     void blockDecrypt(const byte *input, size_t inputLen, byte *outBuffer);
SetCBCMode(bool Mode)49     void SetCBCMode(bool Mode) {CBCMode=Mode;}
50 };
51 
52 #endif // _RIJNDAEL_H_
53