TY - JOUR A2 - Carfì, David AU - Farsana, F. J. AU - Gopakumar, K. PY - 2020 DA - 2020/01/14 TI - Speech Encryption Algorithm Based on Nonorthogonal Quantum State with Hyperchaotic Keystreams SP - 8050934 VL - 2020 AB - With the advancement in modern computational technologies like cloud computing, there has been tremendous growth in the field of data processing and encryption technologies. In this contest there is an increasing demand for successful storage of the data in the encrypted domain to avoid the possibility of data breach in shared networks. In this paper, a novel approach for speech encryption algorithm based on quantum chaotic system is designed. In the proposed method, classical bits of the speech samples are initially encoded in nonorthogonal quantum state by the secret polarizing angle. In the quantum domain, encoded speech samples are subjected to bit-flip operation according to the Controlled–NOT gate followed by Hadamard transform. Complete superposition of the quantum state in both Hadamard and standard basis is achieved through Hadamard transform. Control bits for C-NOT gate as well as Hadamard gate are generated with a modified L. 你 ˙ -HyperChaotic系统。秘密非正交旋转角度和超声系统的初始条件是用于确保所提出的算法的安全性的键。在量子域和经典域中分析了所提出的算法的计算复杂性。基于上述原理执行的数值模拟表明，所提出的语音加密算法具有更广泛的keyspace，更高的关键敏感性和对各种差分和统计密码攻击的鲁棒。SN - 1687-9120 UR - https://doi.org/10.1155/2020/8050934 do - 10.1155 / 2020/8050934 jf - 数学物理学Pb - Hindawi Kw - ER -