Name: | Mr. Roman Black |
Web Site: | http://www.romanblack.com |
PIC |
published post 37625.4780324074 Pages:
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Dear Roman Black,Thank you for putting such interesting and useful electric circuits, and descriptions of how they work, on the web.
I hope you won't be too disappointed when I tell you that The ELK Theory - Unbreakable Encryption is the same as "one-time pad" encryption . Apparently the one-time pad was invented and patented around 1920 .
Rather than use "+" while encrypting and "-" while decrypting, I find it simpler to use the same operator in both directions. (So "double encrypting" with the same keyword gives me the plaintext back -- I don't need a "encrypt/decrypt" switch on the machine). The Beaufort cipher uses "-" in both directions. The original one-time pad used "XOR" in both directions. (Is there any other operator that does not require a "encrypt/decrypt" switch?) -- David Cary (DAV-MP-E62a)