Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-09-24
1997-01-07
Cain, David C.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 20, 380 23, H04L 900
Patent
active
055925529
ABSTRACT:
A selective broadcasting method operative to transmit a plurality of message data signals to a corresponding plurality of subscriber subsets within a set of subscribers, the method comprising receiving an indication of a privileged set comprising an individual subset and transmitting a message data signal from which a key can be extracted by members of the privileged set and cannot be extracted by any set of members outside the privileged set whose number of members is less than a predetermined resiliency, wherein the length of the message data signal is less than the sum of lengths of the message data signals required if an individual message data signal is transmitted to each subscriber in the privileged set.
REFERENCES:
patent: 5208859 (1993-05-01), Bartucci et al.
patent: 5481609 (1996-01-01), Cohen et al.
patent: 5481613 (1996-01-01), Ford et al.
Goldreich, O., et al., How to construct random functions, Journal of the Association for Computing Machinery, vol. 33, No. 4, 1986, pp. 792-807.
Fredman, M. L., et al., Storing a sparse table with O(1) worst case access time, Journal of the Association for Computing Machinery, vol. 31, No. 3, Jul. 1984, pp. 538-544.
Carter, J. L., et al., Universal classes of hash functions, Journal of Computer and System Sciences, 18, 143-154, (1979).
Rivest, R. L., et al., A method for obtaining digital signature and public-key cryptosystems, Communications of the ACM, V 21, N 2, Feb. 1978, pp. 120-126.
Impagliazzo, R., et al., Pseudo-random generation from one-way functions (extended abstract), 1989.
Diffie, W., et al., New directions in cryptography, IEEE Transactions on Information Theory, V IT-22, N 6, Nov. 1976, pp. 644-654.
Wegman, M. N., et al., New hash functions and their use in authentication and set equality, Journal of Computer and Syste Sciences, 22, pp. 265-279, 1981.
Shamir, A., On the generation of cryptographically strong pseudorandom sequences, ACM Transactions on Computer Systems, vol. 7, No. 1, Feb. 1983, pp. 38-44.
Fiat, A., et al., Broadcast encryption, Advances in Cryptology CRYPTO '93, Aug. 1993, pp. 480-491.
Algorithmic Research Ltd.
Cain David C.
LandOfFree
Broadcast encryption does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Broadcast encryption, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Broadcast encryption will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1771537