RDR Cube Cipher an Extension to Vigenere Cipher
Rahul Sourav Singh, Rupayan Das, Dipta Mukherjee, Prannay Bothra · IOSR Journal of Computer Engineering · 2014
Vigenere Cipher is an encrypting method of alphabetic text using different Shift ciphers or additive based on letter of keywords (1). It works on the set of 26 alphabets; however its scope is not just limited to English alphabets. Being an old method it's been vulnerable to many attacks. The proposed algorithm is to add a new dimension to this traditional method thus increasing its complexity and hence further reducing its vulnerability to different Vigenere Attacks. The keyword also called Encryption key used in Vigenere is used to select different table for encryption accordingly by the communicating parties using a modulus function. The more randomly the Table is varied based on the random selection of tables from a set of table virtually appearing like a cube more unpredictable the Encrypted text becomes hence increasing the complexity of the algorithm further. Different tables also reduces the variances of the characters hence making it more complex to analyze using the already existing Vigenere Analysis Algorithms.