Multi-Source stream authentication framework in case of composite MPEG-4 stream

Authors:
Tieyan Li;Huafei Zhu;Yongdong Wu
Affiliations:
Institute for Infocomm Research (I2R), Singapore;Institute for Infocomm Research (I2R), Singapore;Institute for Infocomm Research (I2R), Singapore
Venue:
ICICS'05 Proceedings of the 7th international conference on Information and Communications Security
Year:
2005

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Abstract

Multimedia community is moving from monolithic applications to more flexible and scalable integrated solutions. Stream authentication is more complex since a stream may consist of multiple sources and be transcoded by intermediate proxies. In this paper, we propose a multi-source stream authentication (mSSA) framework based on MPEG-4 stream format. We describe the overall authentication architecture and elaborate the encoding, hashing, signing, amortizing and verifying methods used in the basic scheme. Further on, we utilize advanced cryptographic primitives-aggregate signature schemes, to reduce the signatures’ size and improve the performance. We illustrate the scheme and discuss the extensions. Our analysis shows that the scheme is secure and efficient.