Auditory Cryptography (k, n) Threshold Watermarking Algorithm

In this paper, auditory cryptography (k, n) threshold watermarking algorithm is proposed. By binary halftone pretreatment, one-dimensional meaningful audio watermarking is pretreated to high-fidelity binary audio. The binary audio is encrypted to n cryptographic audios and embedded in scrambled host audio signal hierarchically. Less than k of the cryptographic audios give no information about the original, only synchronized playing k or more than k of the audios the original can be heard directly. Compared with the traditional audio watermarking algorithm, the proposed algorithm has high security, strong practicability and robustness in enduring common attacks.

Provided by: Xian Jiaotong University Topic: Security Date Added: Sep 2011 Format: PDF

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