ParEncrypt: A Two-phased Encryption for Improved Security

The idea of encrypting text is alluring still as it is the most convenient and straightforward means to shuffle text so as to make it unintelligible to unintended third parties. We design and develop a novel symmetric encryption algorithm ParEncrypt that implements a cascaded structure of known encryption approaches: It first employs Feistel cipher to scramble the plaintext, then applies a further step of substitution implemented via left and right parentheses into the intermediate output to finalize the encryption. This two-phased encryption provides enhanced security with the cost of slower paced performance. We provide performance comparison of our design with common benchmark encryption algorithms and see that ParEncrypt outperforms all others with respect to the level of security. Additionally, our scheme offers an additional benefit as our special way of encryption provides a significant level of compression.