But the key cannot be kept secure, as I need only enter a known password on a known device, get the "encrypted" text and XOR it against my original password. Since XOR is symetrical, A^B = B^A, then we are guaranteed that (A^B)^A = B, and *poof* we derive the magic password.
A single XOR when I can generate more than one "encrypted" text is no security at all.
One-Time pad means ONE-TIME! If you use it twice, the security becomes exactly Zero.
Jeff Naujok
Re:Change is Bad! Very Bad!
on
Disney Goes Boom!
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· Score: 5, Informative
A typical 8" shell weighs about 3 pounds, of which about 1 ounce is the lift charge. Most of the weight comes from the shell casing (pressed glued paper) that holds the burst charge and the stars and keeps them together long enough for the stars to ignite when the timing fuse burns through to the burst charge. Disney is probably using 4" shells for most of their stuff, so figure a pound of shell with a tablespoon of lift charge.
For reference, the largest shell ever fired (the 36" Fat Man) weighed 800 pounds and was lifted 1400 feet in the air by 1/2 pound of black powder.
Sorry, I can buy real, natural, pigeon-blood red ruby (highest grade) by the bag fulls if I want (or if I had the $$$$$). The only recent problems with ruby production is the perpetual civil war on Ceylon, er, Sri Lanka, er Asimov's Island...
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But the key cannot be kept secure, as I need only enter a known password on a known device, get the "encrypted" text and XOR it against my original password. Since XOR is symetrical, A^B = B^A, then we are guaranteed that (A^B)^A = B, and *poof* we derive the magic password.
A single XOR when I can generate more than one "encrypted" text is no security at all.
One-Time pad means ONE-TIME ! If you use it twice, the security becomes exactly Zero.
Jeff Naujok
A typical 8" shell weighs about 3 pounds, of which about 1 ounce is the lift charge. Most of the weight comes from the shell casing (pressed glued paper) that holds the burst charge and the stars and keeps them together long enough for the stars to ignite when the timing fuse burns through to the burst charge. Disney is probably using 4" shells for most of their stuff, so figure a pound of shell with a tablespoon of lift charge.
For reference, the largest shell ever fired (the 36" Fat Man) weighed 800 pounds and was lifted 1400 feet in the air by 1/2 pound of black powder.
Sorry, I can buy real, natural, pigeon-blood red ruby (highest grade) by the bag fulls if I want (or if I had the $$$$$). The only recent problems with ruby production is the perpetual civil war on Ceylon, er, Sri Lanka, er Asimov's Island...