Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1996-11-25
1999-01-05
Tarcza, Thomas H.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 49, 380 25, 705 39, H04L 900, H04K 100
Patent
active
058570233
ABSTRACT:
A method of redeeming for a seller electronic payments generated by and received from a customer using a master key unknown to the seller. In anticipation of making electronic payments, a customer sends a bank the master key that he will use to generate electronic payments. The bank stores the master key. Later, the bank receives from the seller a redemption request including a seller identifier, a first value of a payment index, and an electronic payment associated with the first value of the payment index. The bank authenticates the electronic payment by comparing the electronic payment to a hash of a string including the master key, the seller identifier, and the first value of the payment index. If the electronic payment is authenticated, the bank determines an amount due to the seller and credits that amount to the seller.
REFERENCES:
patent: 4529870 (1985-07-01), Chaum
patent: 4914698 (1990-04-01), Chaum
patent: 4926480 (1990-05-01), Chaum
patent: 5224162 (1993-06-01), Okamoto et al.
patent: 5305383 (1994-04-01), Guillou et al.
patent: 5511121 (1996-04-01), Yacobi
patent: 5530235 (1996-06-01), Stefik et al.
Chaum, D., Achieving Electronic Privacy. Scientific American, Aug. 1992, pp. 96-101.
Chaum, D., Achieving Electronic Privacy. Scientific American, Aug. 1992, pp. 96-101. Copyright (c) 1992 by Scientific American, Inc. Found on the WWW at http://ganges.cs.tcd.ie/mepeirce/Project/Chaum/sciam.html.
Chaum, D., Prepaid Smart Card Techniques: A Brief Introduction And Comparison. Copyright (c) 1994 by DigiCash bv. Found on the WWW at http://ganges.cs.tcd.ie/mepeirce/Project/Chaum/cardcom.html.
Chaum, D., Security Without Identification: Transaction Systems To Make Big Brother Obsolete. Communications of the ACM, vol. 28, No. 10 Oct. 1985, pp. 1030-1044.
Glassman, S. et al., The Millicent Protocol For Inexpensive Electronic Commerce. GMAGS 1995, pp. 1-19.
Hallam-Baker, P. M., Micro Payment Transfer Protocol (MPTP) Version 1.0. Internet Draft, Nov. 22, 1995, Expires May 27th 1996, World Wide Web Consortium, http://www.w3.org/pub/WWW/TR/WD-mptp951122.html.
Low, S. H. et al., Anonymous Credit Cards. 2nd ACM Conference on Computer and Communications Security, IEEE, Nov. 2-4, 1994, Fairfax, Virginia, pp. 108-117.
Manasse, M. S., The Millicent Protocols For Electronic Commerce. First USENIX Workshop on Electronic Commerce, Jul. 11-12, 1995, pp. 117-123.
Okamoto, T. et al., Disposable Zero-Knowledge Authentications And Their Applications Ot Untraceable Electronic Cash. Crypto '89, Santa Barbara, California, Aug. 20-24, 1989, pp. 481-496.
Okamoto, T. et al., Universal Electronic Cash. Advances in Cryptology -Crypto '91 Proceedings, Berlin: Springer-Verlag, 1992, pp. 324-337.
Pedersen, T. P., Electronic Payments Of Small Amounts. Computer Science Department Aarhus University, Aug. 1995, pp. 1-15.
Rivest, R. L. et al., Payword And Micromint: Two Simple Micropayment Schemes. May 7, 1996, pp. 1-18.
Singleton, A., Cash On The Wirehead. Byte, Jun. 1995, pp. 71-78.
Demers Alan J.
Greene Daniel H.
Spitznagel Bridget A.
Want Roy
Laufer Pinchus M.
Tarcza Thomas H.
Xerox Corporation
LandOfFree
Space efficient method of redeeming electronic payments does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Space efficient method of redeeming electronic payments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Space efficient method of redeeming electronic payments will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-867791