Multiphase and Multiple Encryption

Cryptography and steganography are the two basic techniques which provide security and integrity of data. Numerous algorithms and ciphers have been developed contributing to the security of data. Even though these algorithms have contributed to data security, these are still vulnerable to attacks. The study was conducted to develop a multiphase and multiple encryption algorithm which will provide better security and safety of data. An android application is designed to implement and test the same to check its vulnerability. The algorithm will provide data encryption multiple times with each step being encrypted with a different algorithm along with randomization. Few strong and secure cryptography algorithms categorized into symmetric and asymmetric are incorporated in to the proposed work. The algorithms are referred to as Advanced Encryption Algorithm (AES-256 bits), RSA, Data Encryption Standard (DES), Blowfish, Caesar Cipher and ROT13. The validation of the proposed work is accomplished by comparing its results with the contemporary available algorithms based on the evaluation parameters such as time complexity, security and data size.