| Summary: | 博士 === 國立交通大學 === 電機與控制工程系所 === 93 === This dissertation presents three hybrid coding techniques on convolution code, MP3 and AES to enhance the coding efficiency of overall data coding flow or their application value. Each hybrid coding technique is based on secrecy coding, and accompanied by channel coding or source coding. First, state-hopping shift registers are proposed instead of the shift registers used in convolution code to obtain a new coding scheme. A pseudo-random vector generator (PRVG) is incorporated into the new scheme to achieve secure coding and channel coding simultaneously. The new scheme can be either a pure cryptosystem or a secrecy-channel coding by demand. If the secrecy-channel coding is chosen, the decoder of this new scheme is modified from the sequential algorithm, which is a decoding algorithm for convolution code. Finally, we apply (n+1, n) cyclic redundancy check (CRC) in the implementation of AES, where n is 4, 8 or 16 to let that implementation against differential faults attacks (DFA).
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