polyalphabetic
Related Words
monoalphabeticciphercryptographyencryptiondecryptionsubstitutionkeyalphabetplaintextciphertextcryptanalysisfrequencyanalysisperiodshifttableaucodeencodingdecodingsecurityalgorithmpermutationtranspositionindexcoincidencemonogramtrigramstreamblocksymmetricasymmetricsecrethiddenobfuscationmessagecommunicationprotocolsteganographymodulararithmeticmodulocharactersymbolstringpatterncyclerotationCaesarEnigmarotorwheeldiscmatrixgridkeywordentropyrandomnessdeterministicheuristiccryptogrambitstreamhashsaltnoncepaddingdiffusionconfusion