密码学大全(英文版)
英文版的。不要下错了。Secretwritingforthetransmissionofmessageshasbeenpracticedfornearly4,000years.AccordingtoDavidKahn,thegreathistorianofcryptology,thefirstexampleofanintentionallyalteredmessagecanbetracedtoatombinancientEgyptdatedabout1900b.c.Inthe40centuriessincethatevent,secretmessages
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