System and method for transferring the right to decode messages

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United States of America Patent

PATENT NO 7286665
SERIAL NO

09468703

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Abstract

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Methods for transferring among key holders in encoding and cryptographic systems the right to decode and decrypt messages in a way that does not explicitly reveal decoding and decrypting keys used and the original messages. Such methods are more secure and more efficient than typical re-encoding and re-encryption schemes, and are useful in developing such applications as document distribution and long-term file protection.

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Patent Owner(s)

  • CONTENTGUARD HOLDINGS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Xin Torrance, CA 1345 12630

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