A Stream Ciphering Approach Based on the Wire-Tap Channel Coding

8th Central European Conference on Cryptography 2008 1 Let’s call ECC-box a coponent which encodes the plaintext in order to provide correction of the random errors. Note that in the proposing stream cipher ECC-box encodes the plaintext so that it can be recovered correctly after corruption by the errors introduced in the ciphertext deliberately. Block scheme of the novel stream cipher family is depicted in Fig. 1. The ”white” boxes in Fig. 1 correspond to the boxes in a traditional stream cipher which performs ”encoding+encryption” in order to perform reliable operation over a noisy communication channel, and the ”gray” box are the additional ones. Error-Correction Encoding Keystream Generator