I was thinking of generating a WPA-PSK passphrase, and I see in the OpenBSD manpage for
The passphrase must be a sequence of between 8 and 63 ASCII-encoded characters.
What exactly is the criteria for "ASCII-encoded" here? Just that they must be 8-bit chars with the high bit unset? Are non-printable characters allowed?
Come to think of it... Does my approach of randomly generating a passphrase make any sense? Would it be better to just generate 64 random bytes and use that as a key?