> they specifically select sentences that form a poem that is valid in the English language How many possible rhyming couplets are there? I'll give you a hint,

> they specifically select sentences that form a poem that is valid in the English language How many possible rhyming couplets are there? I'll give you a hint, it's a huge number. > and is easy to memorize. They do this by choosing from a million candidates. That reduces the key space by log2(1000000) ~ 19.9 bits. Compensate in full by increasing the key size by two more words. > social engineering Irrelevant. The passphrases are selected by computer. > to about 10,000 Do the actual calculations.