Cryptography – Particular algorithmic function encoding
Reexamination Certificate
2005-02-22
2005-02-22
Morse, Gregory (Department: 2134)
Cryptography
Particular algorithmic function encoding
C380S259000
Reexamination Certificate
active
06859533
ABSTRACT:
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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Ta Thanh T.
Wang Xin
ContentGuard Holdings Inc.
Kaufman Marc S.
Morse Gregory
Nalven Andrew
Nixon & Peabody LLP
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