headers/private/libroot/SHA256.h

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _SHA_256_H
   6 #define _SHA_256_H
   7
   8
   9 #include <SupportDefs.h>
  10
  11
  12 #define SHA_DIGEST_LENGTH       32
  13
  14 namespace BPrivate {
  15
  16
  17 class SHA256 {
  18 public:
  19                                                                 SHA256();
  20                                                                 ~SHA256();
  21
  22                         void                            Init();
  23                         void                            Update(const void* buffer, size_t size);
  24                         const uint8*            Digest();
  25                         size_t                          DigestLength() const
  26                                                                         { return SHA_DIGEST_LENGTH; }
  27
  28 private:
  29                         void                            _ProcessChunk();
  30
  31 private:
  32                         uint32                          fHash[8];
  33                         uint32                          fDigest[8];
  34                         uint32                          fBuffer[64];
  35                         size_t                          fBytesInBuffer;
  36                         size_t                          fMessageSize;
  37                         bool                            fDigested;
  38 };
  39
  40
  41 } // namespace BPrivate
  42
  43 using BPrivate::SHA256;
  44
  45
  46 #endif  // _SHA_256_H