Re^3: Save space with CRC


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Re^3: Save space with CRC

by perlfan (Vicar)

on Dec 19, 2007 at 20:19 UTC ( [id://657965]=note: print w/replies, xml )

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in reply to Re^2: Save space with CRC
in thread Save space with CRC

If you take into account MD5 of the file in addition to some other factors, such as file size or hash of the reverse of the file, you'll be okay. Also, CRC is used to detect errors in data trasmission or storage - not for comparing two files.

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Re^4: Save space with CRC
by Anonymous Monk on Dec 20, 2007 at 00:58 UTC

Thk perlfan too, other very well suggestion is use "hash of the reverse of the file" I dont thinking in that but is really good.

Please note that CRC is mostly used to check transmition but in fact the CRC is a "simple" method to transform any size of input data in a fix integer size, not less, not more, you can use that to anything that you want.

The bad think about this it's very short an can be colition.

Thk a lot to all.

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