Auditory Cryptography Security Algorithm With Audio Shelters

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In this paper, auditory cryptography security algorithm with audio shelters is proposed. The meaningful audio watermarking is pretreated to high-fidelity binary audio, and the binary audio is encrypted to n cryptographic audios by (k, n) threshold scheme. Less than k of the cryptographic audios give no information, only synchronized playing k or more than k of the audios the original can be heard directly. The n cryptographic audios are embedded in the corresponding n shelter audios which are pretreated by high-dimensional matrix transformation. Experiments show that the proposed algorithm has strong practicability, high security and robustness in enduring common attacks.