17 Dec
2003
17 Dec
'03
11:17 p.m.
steve bellovin writes:
bruce schneier writes:
Figure that each English character has 1.8 bits of entropy. (This is a conservative number, because it doesn't take into account case, spacing, or punctuation.) If I want a passphrase that will map into a 64-bit keyspace, I need at least a 35-chararcter phrase.
Don't forget the difficulty of typing such a long phrase, with echoing turned off.
but it's not that difficult. at least, I don't have any difficulty with it. perhaps I really am superhuman, but somehow I doubt it. josh