Diceware is a method for random password generation, created by Arnold Reinhold and published in 1995. Using it, you draw a few words (usually between 4 and 8 words) from a large list (with 7,776 words) using common six-sided dices and this is your new password. The Diceware D12 (or DW12) proposal is a variantion of traditional Diceware, with some striking differences.