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Volume 41 Issue 12
Dec.  2019
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Xiaoni DU, Li LI, Fujun ZHANG. Linear Complexity of Binary Sequences Derived from Euler Quotients Modulo 2pm[J]. Journal of Electronics & Information Technology, 2019, 41(12): 3000-3005. doi: 10.11999/JEIT190071
Citation: Xiaoni DU, Li LI, Fujun ZHANG. Linear Complexity of Binary Sequences Derived from Euler Quotients Modulo 2pm[J]. Journal of Electronics & Information Technology, 2019, 41(12): 3000-3005. doi: 10.11999/JEIT190071

Linear Complexity of Binary Sequences Derived from Euler Quotients Modulo 2pm

doi: 10.11999/JEIT190071
Funds:  The National Natural Science Foundation of China (61462077, 61562077, 61772022), The Shanghai Municipal Natural Science Foundation (16ZR1411200)
  • Received Date: 2019-01-24
  • Rev Recd Date: 2019-06-20
  • Available Online: 2019-07-09
  • Publish Date: 2019-12-01
  • Families of pseudorandom sequences derived from Euler quotients modulo odd prime power possess sound cryptographic properties. In this paper, according to the theory of residue class ring, a new classes of binary sequences with period $2{p^{m + 1}}$ is constructed using Euler quotients modulo $2{p^m},$ where $p$ is an odd prime and integer $m \ge 1.$ Under the condition of ${2^{p - 1}}\not \equiv 1 ({od}\,{p^2})$, the linear complexity of the sequence is examined with the method of determining the roots of polynomial over finite field ${F_2}$. The results show that the linear complexity of the sequence takes the value $2({p^{m + 1}} - p)$ or $2({p^{m + 1}} - 1)$, which is larger than half of its period and can resist the attack of Berlekamp-Massey (B-M) algorithm. It is a good sequence from the viewpoint of cryptography.
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