Key transport protocol based on secret sharing: an application to conditional access systems

Ahmet M. Eskicioglu

doi:10.1117/12.435393

1 August 2001 Key transport protocol based on secret sharing: an application to conditional access systems

Ahmet M. Eskicioglu

Proceedings Volume 4314, Security and Watermarking of Multimedia Contents III; (2001) https://doi.org/10.1117/12.435393
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

In today's digital world, multimedia content is delivered to homes via the Internet, satellite, terrestrial and cable networks. Scrambling is a common approach used by conditional access systems to prevent unauthorized access to audio/visual data. The descrambling keys are securely distributed to the receivers in the same transmission channel. Their protection is an important part of the key management problem. Although public-key cryptography provides a viable solution, alternative methods are sought for economy and efficiency. This paper presents a key transport protocol based on secret sharing. It eliminates the need for a cipher, yet combines the advantages of symmetric and public-key ciphers.

Citation Download Citation

Ahmet M. Eskicioglu "Key transport protocol based on secret sharing: an application to conditional access systems", Proc. SPIE 4314, Security and Watermarking of Multimedia Contents III, (1 August 2001); https://doi.org/10.1117/12.435393

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