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Windows 7: The hashes - your still at it

14 May 2009   #1

Windows 7 Ultimate x86 7600 RTM
The hashes - your still at it

Come on people, this is nonsense now. If you continue to believe that two different files are able to have the same hashes, you have to be kidding yourself. Yes, when things are hashed, there is a tiny chance that 2 can be the same. However, there isn't just 1 hash we are talking about here, its 2 hashes. Thats like a 1 in a billion chance that 2 pieces of data could have the same 2 hashes. And then also factor in that its not very likely that the changes made to the builds would make just that right combination to get the 2 hashes the same. The hashes are not built on to the builds, the hash checking programs load the file thats being checked into memory and then run a mathematically irreversible algorithm (due to truncation) on it and come out with the hash - you can't "tamper" with this. If you can't wrap your head around this simple thing you are just as smart as the people who believe you can compress gigabytes of data in to mere megabytes. Sorry to burst your bubble.

My System SpecsSystem Spec

14 May 2009   #2

Windows 7 Ultimate x64.

Totally agree with you on this one Termana. It would also take a very very very long time to achieve.

Some might come on to argue the difference with us but there you go.
My System SpecsSystem Spec
14 May 2009   #3

Windows 8.1 Pro RTM x64

An illustration showing how file size and content affects hash values. Also illustrates the other file hashes available with Hash Tab v2.3.0

Basic Test file.
Name:  Capture.PNG
Views: 8
Size:  12.1 KB
Name:  Capture1.PNG
Views: 14
Size:  44.8 KB Name:  Capture1a.PNG
Views: 11
Size:  44.8 KB
Test file with fox and dog transposed.
Name:  Capture2.PNG
Views: 7
Size:  18.1 KB
Name:  Capture3.PNG
Views: 7
Size:  44.5 KB Name:  Capture3a.PNG
Views: 8
Size:  44.7 KB
Test file copied 4 times.
Name:  Capture4.PNG
Views: 9
Size:  20.4 KB
Name:  Capture5.PNG
Views: 7
Size:  55.3 KB Name:  Capture5a.PNG
Views: 10
Size:  55.5 KB

My System SpecsSystem Spec


 The hashes - your still at it

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