When there is a surplus of renewable power in search of a load, perhaps plants should be brought on-line that draw in atmospheric carbon dioxide and split it into solid carbon and oxygen. The carbon could then be sequestered by burying into empty coal mines. Maybe someday we'll refill all coal mines with atmospheric (really oceanic) carbon and vow never to do that again.
My institution requires this:
Minimum length of 8 characters and at least 3 of these 4 classes ( uppercase, lowercase, number, special chars, UTF-8 chars other than lower/upper)
I use the CorrectHorseBatteryStaple method for password generation for all entropy, and use a simple algorithm to "comply" with the rest, which I consider bullshit. In a nutshell, I use a cryptographically-sound PRNG to select 5 words from a list of 2048 common English words, capitalize the first letter of each word, then append them together with a dash (space isn't counted as a special character on all systems here). This satisfies the requirement for 3 of the 4 classes and minimum length while still being easy to memorize.
The key to the soundness of this method is to let a RNG (or good PRNG) select the words for you. Users picking their own password is the main criticism of the CorrectHorseBatteryStaple method.
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My $0.02 anyway...
I'd rather be able to rent a small theatre to view older movies with some friends.
My institution requires this: Minimum length of 8 characters and at least 3 of these 4 classes ( uppercase, lowercase, number, special chars, UTF-8 chars other than lower/upper) I use the CorrectHorseBatteryStaple method for password generation for all entropy, and use a simple algorithm to "comply" with the rest, which I consider bullshit. In a nutshell, I use a cryptographically-sound PRNG to select 5 words from a list of 2048 common English words, capitalize the first letter of each word, then append them together with a dash (space isn't counted as a special character on all systems here). This satisfies the requirement for 3 of the 4 classes and minimum length while still being easy to memorize. The key to the soundness of this method is to let a RNG (or good PRNG) select the words for you. Users picking their own password is the main criticism of the CorrectHorseBatteryStaple method.