TY - JOUR JF - isc-monadi JO - منادی VL - 5 IS - 1 PY - 2016 Y1 - 2016/9/01 TI - Jump Index in T-functions for designing a new basic structure of stream ciphers TT - استفاده از ضریب پرش در توابع تی برای طراحی یک ساختار اولیه نوین در رمزهای جریانی N2 - The stream ciphers are set of symmetric cipher algorithms that receive the secret message as a sequence of bits and process encrypted operation using complex function according to key, IV and XOR combination of a sequence of bits. One of the goals in the design of stream ciphers is to get minimum great period using one of the primary T-functions. Also using jump index in designing LFSRs lead to complexity of stream ciphers based on LFSR analysis. In this paper, tried with using of T-functions concepts and jump index, a novel method presented for primary functions design with great period. SP - 21 EP - 32 AU - Hadipour, Ali AU - Sajadieh, Seyed Mahdi AU - MoradAfifi, Raheleh AD - KW - T-function KW - Jump index KW - Stream cipher KW - great period UR - http://monadi.isc.org.ir/article-1-75-en.html ER -