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Sep
24
awarded  Autobiographer
May
18
awarded  Student
May
18
asked Are there any hand ciphers not obsoleted by computer cryptanalysis?
Aug
8
awarded  Editor
Aug
8
revised Is there a secure cryptosystem that can be performed mentally?
Updated the url, since I recently moved this old website to a new web hosting provider.
Sep
29
awarded  Teacher
Sep
28
answered Is there a secure cryptosystem that can be performed mentally?