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User-oriented key management scheme for content protection in OPMD environment

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3 Author(s)
Hoonjung Lee ; Dept. of Comput. Sci. & Eng., Hanyang Univ., Ansan, South Korea ; Hasoo Eun ; Heekuck Oh

In this paper, we propose a key management scheme for content protection in the OPMD (One Person Multi Device) environment where one user owns multiple devices. IBTD (ID-Based Threshold Decryption) was applied for the proposed scheme, and this uses the user IDs and the device IDs as their public key. It is the key management scheme that can decrypt the encrypted content only when more than t secret sharing values are combined among the n secret sharing values generated by the contents server. Our scheme enables the users to use their own contents anytime and anywhere on any device that they own. For the contents server, it enables an effective key management which is user-oriented, not device-oriented.

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:58 ,  Issue: 2 )