update libchdr

[pcsx_rearmed.git] / deps / libchdr / deps / lzma-22.01 / include / Sha256.h

/* Sha256.h -- SHA-256 Hash\r
2021-01-01 : Igor Pavlov : Public domain */\r
\r
#ifndef __7Z_SHA256_H\r
#define __7Z_SHA256_H\r
\r
#include "7zTypes.h"\r
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EXTERN_C_BEGIN\r
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#define SHA256_NUM_BLOCK_WORDS  16\r
#define SHA256_NUM_DIGEST_WORDS  8\r
\r
#define SHA256_BLOCK_SIZE   (SHA256_NUM_BLOCK_WORDS * 4)\r
#define SHA256_DIGEST_SIZE  (SHA256_NUM_DIGEST_WORDS * 4)\r
\r
typedef void (MY_FAST_CALL *SHA256_FUNC_UPDATE_BLOCKS)(UInt32 state[8], const Byte *data, size_t numBlocks);\r
\r
/*\r
  if (the system supports different SHA256 code implementations)\r
  {\r
    (CSha256::func_UpdateBlocks) will be used\r
    (CSha256::func_UpdateBlocks) can be set by\r
       Sha256_Init()        - to default (fastest)\r
       Sha256_SetFunction() - to any algo\r
  }\r
  else\r
  {\r
    (CSha256::func_UpdateBlocks) is ignored.\r
  }\r
*/\r
\r
typedef struct\r
{\r
  SHA256_FUNC_UPDATE_BLOCKS func_UpdateBlocks;\r
  UInt64 count;\r
  UInt64 __pad_2[2];\r
  UInt32 state[SHA256_NUM_DIGEST_WORDS];\r
\r
  Byte buffer[SHA256_BLOCK_SIZE];\r
} CSha256;\r
\r
\r
#define SHA256_ALGO_DEFAULT 0\r
#define SHA256_ALGO_SW      1\r
#define SHA256_ALGO_HW      2\r
\r
/*\r
Sha256_SetFunction()\r
return:\r
  0 - (algo) value is not supported, and func_UpdateBlocks was not changed\r
  1 - func_UpdateBlocks was set according (algo) value.\r
*/\r
\r
BoolInt Sha256_SetFunction(CSha256 *p, unsigned algo);\r
\r
void Sha256_InitState(CSha256 *p);\r
void Sha256_Init(CSha256 *p);\r
void Sha256_Update(CSha256 *p, const Byte *data, size_t size);\r
void Sha256_Final(CSha256 *p, Byte *digest);\r
\r
\r
\r
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// void MY_FAST_CALL Sha256_UpdateBlocks(UInt32 state[8], const Byte *data, size_t numBlocks);\r
\r
/*\r
call Sha256Prepare() once at program start.\r
It prepares all supported implementations, and detects the fastest implementation.\r
*/\r
\r
void Sha256Prepare(void);\r
\r
EXTERN_C_END\r
\r
#endif\r