I am using FileFingerprint to get the fingerprint of a zip file.
I then recreate the same zip file in the same way and use FileFingerprint again.
It gives me two different fingerprints?
Is this because of the two different times of creation?
Is there any way to get over this?
Tried with MD5 and CRC
Regards
CD
FileFingerprint Question
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collectordave
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FileFingerprint Question
Any intelligent fool can make things bigger and more complex. It takes a touch of genius — and a lot of courage to move in the opposite direction.
Re: FileFingerprint Question
Possibly. I'm guessing it's more to do with the random encryption with each compression, though.collectordave wrote:Is this because of the two different times of creation?
Re: FileFingerprint Question
Hello.
The problem is probably the way you use to create your zip file.
Any Code ?
The problem is probably the way you use to create your zip file.
Any Code ?
~Ar-S~
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PB - 3.x / 5.7x / 6 - W11 x64 - Ryzen 7 3700x / #Rpi4
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NicTheQuick
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Re: FileFingerprint Question
As you can see the ZIP header contains some timestamps. I guess this is at least one part of your problem: https://en.wikipedia.org/wiki/Zip_(file ... ile_header
If you do not encrypt the ZIP file that should also not affect anything. Compression is deterministic.
If you do not encrypt the ZIP file that should also not affect anything. Compression is deterministic.
The english grammar is freeware, you can use it freely - But it's not Open Source, i.e. you can not change it or publish it in altered way.
Re: FileFingerprint Question
I believe this is due to internal timestamp differences.collectordave wrote:I am using FileFingerprint to get the fingerprint of a zip file.
I then recreate the same zip file in the same way and use FileFingerprint again.
It gives me two different fingerprints?
Is this because of the two different times of creation?
Is there any way to get over this?
Tried with MD5 and CRC
Regards
CD
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