Perceptual cryptography on MPEG Layer III bit-streams

Authors:
A. Torrubia;F. Mora
Affiliations:
Trymedia Systems, Inc.;-
Venue:
IEEE Transactions on Consumer Electronics
Year:
2002

Citing 0
Cited 5

Light weight MP3 watermarking method for mobile terminals

Proceedings of the 13th annual ACM international conference on Multimedia
Efficient selective encryption for JPEG 2000 images using private initial table

Pattern Recognition
Light Weight MP3 Watermarking Method for Mobile Terminals

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Multimedia data encryption in block-based codecs

International Journal of Computers and Applications
Huffman table swapping-based steganograpy for MP3 audio

Multimedia Tools and Applications

Quantified Score

Hi-index	0.43

Visualization

Abstract

Whereas conventional cryptography is suitable for any kind of data, it does not allow for perceptual degradation of encrypted data in multimedia-compressed formats. We present perceptual cryptography applied to MPEG Layer III compressed audio (MP3). The inputs of the cipher are the plaintext MP3 bit-stream, encryption key and encryption percentage. The cipher outputs a MPEG Layer III compliant bit-stream (ciphertext) that is perceptually less valuable than the original bit-stream. The original MP3 bit-stream can be recovered using the ciphertext bit-stream and the same decryption key and percentage used on encryption. An introduction to MP3 audio compression is given followed by a description of the perceptual cipher and its applications. The paper addresses the relationship between the encryption percentage and the subjective quality.