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Contactless CPU card compatible to logic encryption card

A logic encryption card and non-contact technology, which is applied to record carriers used in machines, instruments, computer components, etc., can solve the problems of system transformation and transition that cannot be solved at once, and achieve the effect of improving security

Active Publication Date: 2006-06-21
SHANGHAI FUDAN MICROELECTRONICS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the characteristics of the logical encryption card, the card has great limitations in security and multi-application scalability. With the deepening of the application of contactless cards, users are increasingly concerned about card security. At the same time, the number of CPU cards It has advantages in cross-regional applications. Users from all over the world have proposed to use non-contact CPU cards to replace the original logical encryption card applications, including the standard of the Ministry of Construction, which also recommends the use of non-contact CPU cards to replace the original logical encryption cards. Alternative solutions have the problems of original system transformation and transition that cannot be solved at once

Method used

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  • Contactless CPU card compatible to logic encryption card
  • Contactless CPU card compatible to logic encryption card

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0021] The invention provides a non-contact CPU card compatible with a logic encryption card, which comprises a non-contact logic encryption card function compatible circuit (1), a CPU card circuit (2) and a common addressing access non-volatile memory(3);

[0022] The non-contact logical encryption card function compatible circuit (1) is connected to the CPU card circuit (2) and the common addressing access non-volatile memory (3). compatible;

[0023] The CPU card circuit (2) is connected to a non-contact logic encryption card function compatible circuit (1) and a common addressing access non-volatile memory (3), and the circuit includes a CPU core (5) and a program memory (6) connected to each other. ), non-volatile memory (9), internal memory (8) and encryption co-processing module (7);

[0024] The circuit of the common addressing access non-volatile memory (3) is connected with the non-contact logic encryption card function compatible circuit (1) and the CPU card circu...

specific Embodiment

[0033] The key data in logical encryption card applications, for example, for a typical electronic wallet application (such as public transportation cards, wallets in campus cards), the key data is the cumulative top-up amount (or cumulative top-up value) and wallet (i.e. accumulated consumption amount), when the CPU card COS is processing, it is necessary to check whether the accumulated replenishment amount stored in the non-volatile memory (3) of common addressing access is the same as that stored in the non-volatile memory used by the CPU ( 9) Whether the value (or authentication code) in 9) matches, if not, it means that the data has been illegally changed, then the further use of the card is prohibited or a corresponding reminder is given, for the wallet data (or the accumulated consumption amount), then The value stored in the non-volatile memory (3) for common addressing access must be greater than or equal to the value stored in the non-volatile memory (9) used by the ...

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Abstract

The invention discloses a non-touching CPU card of logic compatible coded card, which comprises the following parts: non-touching logic compatible coded card function compatible circuit, CPU card circuit and non-volatile storage of together addressing invitation; the CPU card circuit contains mutual connection CUP core, program storage, non-volatile storage, internal memory and coded coprocessing mode. The invention solves the safety problem of widely-used non-touching logic coded card, which realizes the appliance of transmission from gapless system to the non-touching CPU card.

Description

technical field [0001] The invention relates to a non-contact CPU card compatible with a logical encryption card. Background technique [0002] With the development of information technology, the application fields of non-contact IC cards continue to expand, and the market holdings of non-contact IC cards continue to increase, especially in the fields of public transportation cards, campus cards, and Internet bar cards. The number of systems is impressive and continues to expand. At present, in the market, this type of card mainly uses two card chips with different structures and functions, one is a non-contact logic encryption card chip with logic encryption function, and the other is a non-contact CPU card chip. The cost is low, so the current main application is the non-contact logic encryption card chip. [0003] The above-mentioned cards mainly use logical encryption card chips with security encryption functions. The cards mainly use logical encryption card chips with...

Claims

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Application Information

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IPC IPC(8): G06K19/073
Inventor 俞军
Owner SHANGHAI FUDAN MICROELECTRONICS GROUP
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