Uses for HashOnClick
There are many reasons why you may wish to find out the hash value of a file. Many web sites for example list the hash value of a file, so that when you download it you can check to see if the file on your computer is correct. Some FTP servers also let you retrieve the hash value of a file (via the XMD5 FTP extension).
CRC32 values are used in Zip files, and some FTP servers also let you retrieve the CRC32 value of a file (via the XCRC FTP extension).
xxhash is an extremely fast non-cryptographic hash algorithm, working at speeds close to RAM limits. If you are using a hash value for your own purposes, and is not shared, and need a hash value calculated very quickly, then xxhash is the one to use.
BLAKE3 is also very fast, and it is a cryptographic hash algorithm, so it is a good choice when you need a hash value calculated quickly that you can also share and rely on. CRC64 values are the ones shown by 7-Zip and used by the xz format.
Another example of using HashOnClick is when you've copied a file from one location to another, and wish to confirm the files are identical. HashOnClick provides you with SHA-3, SHA-2, BLAKE3, BLAKE2b and SHA-1 hash values so that you can make absolutely certain the file is an exact match in both locations.
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