Cipherstream covering for secure data compression

Because of its ability to compress and encrypt plaintext simultaneously, embedment of stream cipher rules into Elias-type entropy encoders provides a fast and secure means of data compression with the ability to hide cipherstream information in the case of a known plaintext attack. Compression and security improve by continually updating the statistical representation of the plaintext. Simulations on images from a variety of classes compare the compression ratios and computational costs of the novel system to those of traditional compression-followed-by-encryption methods.