VerifySN

It is a tool for verifying files very quickly. You can save hashes to a file and compare them.

Usage: program.exe [options] filepath.
      -save   : save hashes to hash.txt.
      -compare: compare hash.

Example -> verifysn.exe -save "C:\gcc"
           verifysn.exe -compare "C:\gcc"
or you can directly list
            verifysn.exe "C:\gcc"

How it works?

-> So easy. Get bytes from the files and calculate the hash. That's all.

"Not guaranteed for highly secure tasks."

Results

Test on 12.2 GB file.

XXH64 -> 15 seconds

VerifySN -> 0.016 seconds

Installation

Cmake (Default)

git clone https://github.com/d06i/verifySN.git
cd verifysn
cmake CMakeLists.txt
cmake --build .

Cmake for MSVC:

git clone https://github.com/d06i/verifySN.git
cd verifysn
cmake CMakeLists.txt -G "Visual Studio 17 2022"
cmake --build . or open the .sln

Compile with Clang \ G++ :

clang -O3 verifysn.cpp -o verifysn.exe

or

g++ -O3 -s verifysn.cpp -o verifysn.exe

Issues

• It works slowly with small and numerous files (such as more than 10,000 files). -> Async might be applicable.

Credits

https://github.com/ztanml/fast-hash