මේවත් බලන්න[සංස්කරණය] Cryptography Cold boot attack Cyberspace Electronic Security Act (in the US) Encryption software Cipher Key management Key Famous ciphertexts Rip van Winkle cipher Strong secrecy     Cryptography ද්වාරය Disk encryption Secure USB drive Secure Network Communications Security and Freedom Through Encryption Act සටහන්[සංස්කරණය] යොමුව[සංස්කරණය] Helen Fouché Gaines, “Cryptanalysis”, 1939, Dover.