nel/3rdparty/seven_zip/Aes.h

   1 /* Aes.h -- AES encryption / decryption
   2 2013-01-18 : Igor Pavlov : Public domain */
   3
   4 #ifndef __AES_H
   5 #define __AES_H
   6
   7 #include "7zTypes.h"
   8
   9 EXTERN_C_BEGIN
  10
  11 #define AES_BLOCK_SIZE 16
  12
  13 /* Call AesGenTables one time before other AES functions */
  14 void AesGenTables(void);
  15
  16 /* UInt32 pointers must be 16-byte aligned */
  17
  18 /* 16-byte (4 * 32-bit words) blocks: 1 (IV) + 1 (keyMode) + 15 (AES-256 roundKeys) */
  19 #define AES_NUM_IVMRK_WORDS ((1 + 1 + 15) * 4)
  20
  21 /* aes - 16-byte aligned pointer to keyMode+roundKeys sequence */
  22 /* keySize = 16 or 24 or 32 (bytes) */
  23 typedef void (MY_FAST_CALL *AES_SET_KEY_FUNC)(UInt32 *aes, const Byte *key, unsigned keySize);
  24 void MY_FAST_CALL Aes_SetKey_Enc(UInt32 *aes, const Byte *key, unsigned keySize);
  25 void MY_FAST_CALL Aes_SetKey_Dec(UInt32 *aes, const Byte *key, unsigned keySize);
  26
  27 /* ivAes - 16-byte aligned pointer to iv+keyMode+roundKeys sequence: UInt32[AES_NUM_IVMRK_WORDS] */
  28 void AesCbc_Init(UInt32 *ivAes, const Byte *iv); /* iv size is AES_BLOCK_SIZE */
  29 /* data - 16-byte aligned pointer to data */
  30 /* numBlocks - the number of 16-byte blocks in data array */
  31 typedef void (MY_FAST_CALL *AES_CODE_FUNC)(UInt32 *ivAes, Byte *data, size_t numBlocks);
  32 extern AES_CODE_FUNC g_AesCbc_Encode;
  33 extern AES_CODE_FUNC g_AesCbc_Decode;
  34 extern AES_CODE_FUNC g_AesCtr_Code;
  35
  36 EXTERN_C_END
  37
  38 #endif