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Cryptographic system and method for electronic transactions

An electronic transaction and electronic card technology, applied in the field of electronic cards, can solve problems such as poor flexibility

Inactive Publication Date: 2007-03-28
杰伊・C・陈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In open networks, systems based on secret keys have less flexibility in key distribution and key management
On the other hand, systems based on public keys / keys certainly have advantages over secret key systems, but they also have their own daunting task, even if the parties to the transaction authenticate each other

Method used

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  • Cryptographic system and method for electronic transactions
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  • Cryptographic system and method for electronic transactions

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Embodiment Construction

[0033] The preferred embodiment of the present invention is a cryptographic system and method for electronic transactions utilizing an electronic card (EC) in the form of a smart card or equivalent software, and communicating over a communication network.

[0034] In a preferred embodiment of the invention, the network is an open network such as the Internet. In alternative embodiments of the invention, other open networks and / or closed networks may be used to establish communications between service providers and their members. For example, a service provider may communicate with its members using its own financial network.

[0035] Any internet protocol can be used for the internet connection. Examples of protocols that may be used include TCP / IP, UDP, HTTP, and the like.

[0036] Traffic may also be carried by means of communication networks such as the Public Switched Telephone Network (PSTN) using traditional analog telephone service (aka Plain Old Telephone Service or ...

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PUM

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Abstract

An electronic transaction system, which facilitates secure electronic transactions among multiple parties including cardholders (20), merchants (70), and service providers (SP) (60). The system involves electronic cards, commonly known as smart cards, and their equivalent computer software package. The card mimics a real wallet and contains commonly seen financial or non-financial instruments such as a credit card, checkbook, or driver's license. A transaction is protected by a hybrid key cryptographic system and is normally carried out on a public network such as the Internet. Digital signatures and random numbers are used to ensure integrity and authenticity. The card utilizes secret keys such as session keys assigned by service providers (SPs) to ensure privacy for each transaction. The SP is solely responsible for validating each participant's sensitive information and assigning session keys. The only trust relationship needed in a transaction is the one that exists between individual participants and the SP.

Description

technical field [0001] The present invention relates to cryptographic systems and methods for secure electronic transactions, and more particularly to an electronic card which takes the form of a "smart card" and / or its equivalent software. Background technique [0002] The generic term "smart card" generally refers to an integrated circuit (IC) card, ie, a credit card-sized piece of plastic embedded with a microchip. The IC chip on the smart card usually, but not necessarily, consists of a microprocessor (CPU), read-only memory (ROM), random-access memory (RAM), input / output devices, and devices such as electrically erasable programmable read-only memory (EEPROM) and some persistent memory components. The chip can realize arithmetic calculation, logic processing, data management and data communication. [0003] Smart cards are mainly divided into two types: contact and contactless. The International Standards Organization (ISO) has developed specifications for such elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00G06K19/10G06K17/00G06Q20/00G07F7/08G07F7/10G09C1/00H04L9/08H04L9/10H04L9/32
CPCG06Q20/04G07F7/1016G06Q20/4093G06Q20/363G07F7/0866G06Q20/357G06Q20/3825G06Q20/341G07F7/1008G06Q20/3823
Inventor 杰伊·C·陈
Owner 杰伊・C・陈
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