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@delegatevoid @LukaszOlejnik Upper limits on passphrase length are mostly about closing a possible resource exhaustion vector on the authenticating system. If you hash it all down to 64 bytes, there’s no point dealing with passphrases longer than 128 characters. Further characters don’t add any further entropy, but if you have no upper bound, some knucklehead is going to make your server hash the entirety of War and Peace over and over.