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In this paper, we address the security and efficiency issues of two recently proposed audio scrambling schemes. We show that these two audio scrambling schemes are actually vulnerable against various attacks such as ciphertext-only attack, known-plaintext attack and chosen-plaintext attack. We also demonstrate that one of these two schemes is lack of efficiency in terms of generating the key stream...
This paper studies the joint security and performance enhancement of secure arithmetic coding (AC) for digital rights management applications. The proposed cryptosystem incorporates the interval splitting AC with a simple bit-wise XOR operation step. Security analysis results show that the proposed scheme provides satisfactory level of security against the cipher-only attack, the chosen-plaintext...
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