Why does this work?

[Skitty]

#include<Crypt.au3>
_Crypt_Startup()
$Y = _Crypt_HashData("TrojanDwnloader.32", $CALG_MD5)
_Crypt_Shutdown()
If Not ( $Y <> "0x0E08BBFAB6D554CFBEB79DBCC3A3D740" ) Then MsgBox(0,"Test: 1","Success.")
If Not ( $Y <> "»ú¶ÕTÏŸ·ŒÃ£×@" ) Then MsgBox(0,"Test: 2","Success.")

EDIT: didn't realize that the binary string matches anything...

Never mind that, I used another similar word that came up with a match but now I cant remember it and nothing else

seem's to match the binary string again, other than "TrojanDwnloader.32"

why?

Edited March 24, 2011 by System238

[Melba23]

System238,

Why do both strings match up?

Because they are the same?

Actually for me the second does not match - here is why:

Test 1:

You are comparing a number to a number - so your convoluted statement works like this:

On my machine
$Y = 0x0E08BBFAB6D554CFBEB79DBCC3A3D740

And so
If Not ( $Y <> "0x0E08BBFAB6D554CFBEB79DBCC3A3D740" ) Then 
If Not ( False ) ; because they match
If True ; So you get a match

Test 2:

You are comparing a anumber to a string - so all will depend on how your number is converted into a string:

On my machine
BinaryToString($Y) = »ú¶ÕTϾ·¼Ã£×@
Which is not         »ú¶ÕTÏŸ·ŒÃ£×@

And so
If Not ( $Y <> "»ú¶ÕTÏŸ·ŒÃ£×@" ) Then 
If Not ( True ) ; because they do not match
If False ; So you do not get a match

I imagine it has to do with the type of coding and the character set you are using - well beyond me I am afraid. I would just stick to the number:number comparison if I were you.

And why on earth are you using a Not ( <> ) construction? What is wrong with If ( = )?

M23

[jvanegmond]

And note the SO BS characters.. (Bad pun?)

Best way IMO:

If Not ( $Y <> Binary("0x0E08BBFAB6D554CFBEB79DBCC3A3D740") ) Then MsgBox(0,"Test: 1","Success.")

I'm guessing that Melbas suggested approach uses string comparison while this compares binary. If there happens conversions of strings to binary first, then this method is still better because the conversion only happens once.

Edited March 24, 2011 by Manadar

[AdmiralAlkex]

And note the SO BS characters.. (Bad pun?)

I lol'd