Using the Ergodic Matrices over Finite Field to Construct the Dynamic Encryptor
All of the security in the cryptosystem is based in the key(or keys); none is based in the details of the algorithm.But it would be more ideal when protection is provided for encryption algorithm.In this paper,a new cryptography named dynamic encryptor is put forward.When information is encrypted using dynamic encryptor,not only the ciphertext is random,but also the encrypt-program can be changed dynamically,so the cryptography is more secure.An implementation of the dynamic encryptor based on the ergodic matrix over finite field is also given.