1 August 2001 Key transport protocol based on secret sharing: an application to conditional access systems
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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.
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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); doi: 10.1117/12.435393; https://doi.org/10.1117/12.435393
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