An implementation of the stream cipher. The one-time pad is simulated by using a keystream generator to create a keystream that is the same length as the message. The keystream generator is simply a ...

Feistel cipher is a design model designed to create different block ciphers, such as DES. The model uses substitution and permutation alternately. This cipher structure is based on the Shannon model ...

Abstract: This chapter addresses the standard approaches to use block ciphers to encrypt and decrypt plaintexts, while considering plaintexts of a size longer than that of a single block. In the ...

his assignment involves implementing the Vigenere cipher as a block cipher and using the Cipher Block Chaining mode of operation, both of which we have studied in lecture and in our textbook.

Zero-correlation linear cryptanalysis is an important method to analyze the security of block ciphers. But there are few works on zero-correlation linear attacks combined with the related-key setting.

Abstract: Most of the current symmetric cryptographic algorithms are deterministic algorithms, i.e., for a given plain text and key mix, the encryption dependably results in the same cipher-text. The ...