Research Of Realizing Algorithm Of Encryption And Scheduling In Single-Chip Voice Cipher

The developing of voice cipher has played an important role in cipher industry. Traditional cipher is big volume, low in efficiency, and also cost high, all these problems have brought forward the single-chip voice cipher, integrative technology and speech coder-decoder, cryptology and modem technology would be well combined in a single-chip voice cipher. In this thesis, the algorithm of scheduling and encryption in Single-Chip Cipher is researched.A recently proposed block-cipher design that encryption algorithms using one-time-one-algorithm based chaos is researched, a block cipher method based on DES is proposed, At last the algorithm is tested with NIST Stat. Software, and 16 indexes are successful to pass the test. The chaos-based block cipher algorithm is realized under CCS, using C54CST DSP as a developing platform, then the security of the algorithm is tested, and experimental results show this algorithm has got balance between security and speed. In addition, the thesis does a research on the kernel of DSP/BIOS, a scheduling algorithm based on DSP/BIOS in the single-chip voice cipher is researched, and all study to these key technologies has great significance in the ultimate realization of the single-chip voice cipher.