University of Technology-IraqEngineering and Technology Journal1681-6900291120110828Proposed Hybrid Approach of Stream Cipher base on Selector of Encryption operation and Key Symmetric translate2132214231998ENAlaa Kadim FarhanJournal Article20110801A stream cipher is a method of encrypting text (to produce cipher text) in
which a cryptographic key and algorithm are applied to each binary digit in a data
stream, one bit at a time. This method is not much used in modern cryptography.
The main alternative method is the block cipher in which a key and algorithm are
applied to blocks of data rather than individual bits in a stream. One of the
weaknesses in the stream cipher is to analyze the text through the use of
encryption algorithms standard in encryption operations.
In this paper description a hybrid structure of encryption algorithm for stream
cipher, this algorithm depends on a specific elements for the selection of
encryption process (logical operation (XOR, AND) between the secret key and the
plain text through encryption, decryption process. the specific intelligence
elements choose from key. The secret key generated from random generator will
be encrypted by RSA algorithm and sends with the encrypted text inside the
packethttps://etj.uotechnology.edu.iq/article_31998_4940593162a3b5a2adcf0c4c7063c047.pdf