*.sfv

I have seen a few .sfv files lately, they were in folders i downloaded from soulseek.
If I open them with notepad they contain the names from all the mp3 files that are in the folder and some numbers.
Can anybody tell me what they are?

Thanks

Quote:

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Check SFV (Simple File Verification)
Description
Some files that you download will come with a .sfv file. This is used to verify that the files that you received are the same as the originals. cksfv is a program that can use the .sfv file to verify the downloaded files. Also, it can be used to create new .sfv files.

(http://www.fodder.org/cksfv/)

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It's a CRC32 value, not very good and easy to forge. One chance in 4 billion that you won't notice a random error. A file verification program like this should use a cryptographically secure hash algorithm instead. The time it takes to hash data is much faster than reading the data from disk so it should be equally fast as the CRC32 version.

Thanks :)
RN does that mean it doesnt make much sense to check it? :huh:

Quote:

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Originally posted by Benno@12 May 2003 - 19:02
Thanks :)
RN does that mean it doesnt make much sense to check it? :huh:

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I don't check them. I think its a waste of time. Corrupt files aren't as much of an issue anymore, since so many sources are available at close reach. :huh:

If it's just a random error in the data then the probability of it not being detected is 1 in 4 billion, but any determined programmer can easily change the data so that it matches the CRC32 value.