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Why MD5 is not reliable?
Some of the duplicate finding software in the market uncovers duplicate files by comparing MD5 hash string of file content. However it is not reliable that there is a chance of MD5 hash collision. Here is one of the examples:
Here is 2 files with same MD5 hash value (cdc47d670159eef60916ca03a9d4a007)*
Hello.exe
erase.exe
But they got different output!
How does True Byte-by-Byte comparison work?
To avoid false duplicate report as a result of MD5 collision, NoClone use the technology
of True Byte-by-Byte comparison. With intelligent file filter, a list of suspected
duplicate files will be scanned out. With exactly content comparison, duplicate
file found is reliable. By opening suspected files together and compare their content
respectively, we can find true duplicate files easily.
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