xxHash is not cryptographic, whereas BLAKE3 is. You can use the former for things such as file integrity from errors checking, and the latter for file integrity

xxHash is not cryptographic, whereas BLAKE3 is. You can use the former for things such as file integrity from errors checking, and the latter for file integrity from malicious intent checking. Or, one is for the file system and the other is for the internet. You should use something altogether slower like bcrypt for passwords though, because then you don't want to have speed in case someone has a copy of your database with a million passwords and tries to dictionary attack those million.