Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1994-10-24
1998-02-03
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 23, 380 25, 380 49, 380 50, H04L 900
Patent
active
057153140
ABSTRACT:
A network-based sales system includes at least one buyer computer for operation by a user desiring to buy a product, at least one merchant computer, and at least one payment computer. The buyer computer, the merchant computer, and the payment computer are interconnected by a computer network. The buyer computer is programmed to receive a user request for purchasing a product, and to cause a payment message to be sent to the payment computer that comprises a product identifier identifying the product. The payment computer is programmed to receive the payment message, to cause an access message to be created that comprises the product identifier and an access message authenticator based on a cryptographic key, and to cause the access message to be sent to the merchant computer. The merchant computer is programmed to receive the access message, to verify the access message authenticator to ensure that the access message authenticator was created using the cryptographic key, and to cause the product to be sent to the user desiring to buy the product.
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Mackie David J.
Payne Andrew C.
Stewart Lawrence C.
Gregory Bernarr E.
Open Market, Inc.
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