Speech Encryption using Fixed Point Chaos based Stream Cipher (FPC-SC) | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 34, 11A, November 2016, Pages 2152-2166 PDF (1.3 M) | ||
| DOI: 10.30684/etj.34.11A.19 | ||
| Author | ||
| Fadhil S. Hasan | ||
| Abstract | ||
| Fixed point chaos based stream cipher (FPC-SC) is presented in this paper to encrypt the speech signal. Fixed point chaos based pseudo random bit generator (FPC-PRBG) is used as key sequence in stream cipher system. Two chaotic Lorenz and Chen systemsare combined to generate Gold FPC-PRBG. The results show that FPC-PRBG has good statistical randomness and encryption performance measure and can be used to produce high speech security level. FPC-PRBG is implemented using Xilinx system generator (XSG) with Xilinx Virtex 4 FPGA device, the system is accessed routed in this device with throughputs 818.64,7978.88 and 780.24 Mbits/sec for Lorenz, Chen and Gold FPC-PRBG respectively, where 40 bits fixed point operation are used. | ||
| Keywords | ||
| Speech Encryption; stream cipher; Fixed Point Chaotic; Pseudo Random Bit Generator; Statistical Randomness Test; RungeKutto; Xilinx System Generator | ||
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