Osama S. Faragallah1,*, Mahmoud Farouk2, Hala S. El-Sayed3
CMC-Computers, Materials & Continua, Vol.72, No.2, pp. 3025-3037, 2022, DOI:10.32604/cmc.2022.019951
Abstract This paper answers three essential questions for audio speech cryptosystems in time and discrete transform domains. The first question is, what are the best values of sub-keys that must be used to get the best quality and security for the audio cryptosystem in time and discrete transform domains. The second question is the relation between the number of sub-keys, the number of secret keys used, and the audio speech signal block’s size. Finally, how many possible secret keys can be used to get the best quality and security results for the audio speech cryptosystem in time and discrete transform domains.… More >
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