3 ms·

I assume MD5 is in there too now. Just out of curiosity, what are the most common use cases for non-cryptographic hash functions?

• adkadskhj 5y ago
  Hash Map/Set keys is a common one, for example.
• Dylan16807 5y ago
  MD5 isn't particularly fast. Basic non-vector BLAKE3 beats it, and SHA1 beats it by even more.
  • kebman 5y ago
    Yes, I'm already aware of that, thank you. Could you please expand upon what the main use cases are for non-cryptographic hashes?
    • Dylan16807 5y ago
      > Yes, I'm already aware of that, thank you. Oh. Well you said "in there too now" so I thought you were saying it was like xxhash in being insecure and fast. Even if that wasn't your intent, I wanted to make it clear to other people. > Could you please expand upon what the main use cases are for non-cryptographic hashes? Very fast hashes are good for hash maps, or even critical for them. That covers a huge amount of uses. And judging by the list on xxhash's website, a bunch of file transfer programs use it as well as bloom filter implementations, along with the databases that are probably using it for various maps.
      • kebman 5y ago
        Cool! I did make a duplicate file finder once. Seems I'll have to update it with this algo then! Thanks for mentioning it! :D