Mercurial > vba-linux
annotate src/win32/7zip/7z/C/Aes.h @ 1:f9f4f1b99eed
importing src directory
| author | Robert McIntyre <rlm@mit.edu> |
|---|---|
| date | Sat, 03 Mar 2012 10:31:27 -0600 |
| parents | |
| children |
| rev | line source |
|---|---|
| rlm@1 | 1 /* Aes.h -- AES encryption / decryption |
| rlm@1 | 2 2008-08-05 |
| rlm@1 | 3 Igor Pavlov |
| rlm@1 | 4 Public domain */ |
| rlm@1 | 5 |
| rlm@1 | 6 #ifndef __AES_H |
| rlm@1 | 7 #define __AES_H |
| rlm@1 | 8 |
| rlm@1 | 9 #include "Types.h" |
| rlm@1 | 10 |
| rlm@1 | 11 #define AES_BLOCK_SIZE 16 |
| rlm@1 | 12 |
| rlm@1 | 13 typedef struct |
| rlm@1 | 14 { |
| rlm@1 | 15 unsigned numRounds2; /* = numRounds / 2 */ |
| rlm@1 | 16 UInt32 rkey[(14 + 1) * 4]; |
| rlm@1 | 17 } CAes; |
| rlm@1 | 18 |
| rlm@1 | 19 /* Call AesGenTables one time before other AES functions */ |
| rlm@1 | 20 void AesGenTables(void); |
| rlm@1 | 21 |
| rlm@1 | 22 /* keySize = 16 or 24 or 32 (bytes) */ |
| rlm@1 | 23 void Aes_SetKeyEncode(CAes *p, const Byte *key, unsigned keySize); |
| rlm@1 | 24 void Aes_SetKeyDecode(CAes *p, const Byte *key, unsigned keySize); |
| rlm@1 | 25 |
| rlm@1 | 26 /* Aes_Encode32 and Aes_Decode32 functions work with little-endian words. |
| rlm@1 | 27 src and dest are pointers to 4 UInt32 words. |
| rlm@1 | 28 arc and dest can point to same block */ |
| rlm@1 | 29 void Aes_Encode32(const CAes *p, UInt32 *dest, const UInt32 *src); |
| rlm@1 | 30 void Aes_Decode32(const CAes *p, UInt32 *dest, const UInt32 *src); |
| rlm@1 | 31 |
| rlm@1 | 32 typedef struct |
| rlm@1 | 33 { |
| rlm@1 | 34 UInt32 prev[4]; |
| rlm@1 | 35 CAes aes; |
| rlm@1 | 36 } CAesCbc; |
| rlm@1 | 37 |
| rlm@1 | 38 void AesCbc_Init(CAesCbc *p, const Byte *iv); /* iv size is AES_BLOCK_SIZE */ |
| rlm@1 | 39 |
| rlm@1 | 40 /* AesCbc_Encode and AesCbc_Decode: |
| rlm@1 | 41 if (res <= size): Filter have converted res bytes |
| rlm@1 | 42 if (res > size): Filter have not converted anything. And it needs at |
| rlm@1 | 43 least res = AES_BLOCK_SIZE bytes to convert one block */ |
| rlm@1 | 44 |
| rlm@1 | 45 SizeT AesCbc_Encode(CAesCbc *p, Byte *data, SizeT size); |
| rlm@1 | 46 SizeT AesCbc_Decode(CAesCbc *p, Byte *data, SizeT size); |
| rlm@1 | 47 |
| rlm@1 | 48 #endif |