md5 of big files.

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Yan

I had this to hand...

Strict

Local start:Int = MilliSecs()

Print

Print Hex$(CRCFile("C:\Downloads\other\far_cry_v1.3.exe"))

Print (MilliSecs() - start)

'FlushMem

End

'Adaptation of MrCredo's CRC code
Function CRCFile(FileName:String, bufferSize:Int=$400000) 'default bufferSize = 4MB
  Local crc:Int = $FFFFFFFF , fileStream:TStream
  Global CRCTable:Int[]
  
  If CRCTable = Null
    Local i:Int, j:Int, value:Int
    
    CRCTable = New Int[256]
  
    For i=0 To 255
      value = i
      For j=0 To 7
        If value & $1 
          value = (value Shr 1) ~ $EDB88320
        Else
          value = value Shr 1
        EndIf
      Next
      CRCTable[i] = value
    Next
  EndIf
  
  fileStream = ReadStream(fileName$)
  If fileStream = Null Then Return
  
  Local buffer:TBank = CreateBank(bufferSize)
  Local bankPtr:Byte Ptr = buffer.Buf()
  
  Repeat
    Local bytesRead:Int = ReadBank(buffer, fileStream, 0, bufferSize)
    
    For Local b=0 Until bytesRead
      crc = (crc Shr 8) ~ CRCTable[bankPtr[b] ~ (crc & $FF)]
    Next
  Until Eof(FileStream)
  
  CloseStream FileStream
  
  Return ~crc
End Function

Should give you a reasonable idea of how you could go about it.