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Questions concerning the mathematics of secure communication. Relevant topics include elliptic curve cryptography, secure key exchanges, and public-key cryptography (eg. the RSA cryptosystem).

15 votes
1 answer
1k views

A cipher proposed by Littlewood

Secondly I have no knowledge of cryptography and I would be very interested in hearing from someone more specialized what are the weak points of Littlewood's proposed cipher (I guess it cannot hold up …
an_ordinary_mathematician's user avatar