New answers tagged blowfish
Above 128 bits in unnecessary. With 128 bits there are 2^128 possible keys, divided by 100 billion tests per second (which would require a formidable GPU farm) and it would take someone 7.8*10^9 times the age of the universe to crack it (about 10^20 years). But in all seriousness I do wonder why there is a limit on the size of the key.
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