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Method, system and PSAM (Purchase Secure Access Module) card for updating encryption key of smart card

A smart card and key technology, applied in a complete banking system, a complete banking system, coin-free or similar appliances, etc., can solve the problems of low success rate and difficulty in updating consumption keys, and achieve a high success rate , update easy effects

Active Publication Date: 2011-05-18
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0034] It is difficult to update the consumption key of the electronic wallet in the existing IC card / (U)SIM card, and the success rate is low

Method used

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  • Method, system and PSAM (Purchase Secure Access Module) card for updating encryption key of smart card
  • Method, system and PSAM (Purchase Secure Access Module) card for updating encryption key of smart card
  • Method, system and PSAM (Purchase Secure Access Module) card for updating encryption key of smart card

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Embodiment Construction

[0110] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0111] Aiming at the problem of high difficulty and low success rate in updating the consumption key of the electronic wallet of the smart card in the prior art, the present invention provides a method, system and method for updating the consumption key of the electronic wallet in the user's smart card, which is easy to update and has a high success rate. PSAM card.

[0112] Such as figure 2 As shown, the method for updating the smart card key of the present invention includes:

[0113] Step 21, the sales security control module (PSAM) card keeps the consumption key root key in the PSAM card and the consumption key root key updated by the payment system according to the consumption key root key updated by the payment system key synchronization;

[01...

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Abstract

The invention provides a method, system and PSAM (Purchase Secure Access Module) card for updating an encryption key of a smart card, wherein the method comprises: according to the updated consumption encryption key root encryption key of a payment system, the PSAM card keeps synchronization of the consumption encryption key root encryption key in the PSAM card and the updated consumption encryption key root encryption key of the payment system; and a user smart card updates a consumption encryption key sub key in the user smart card according to the consumption encryption key root encryptionkey after synchronization in the PSAM card when the user smart card and the PSAM card are communicating. By adopting the scheme of the invention, the consumption encryption key sub key of an electronic wallet is easy to update and the update success ratio is high.

Description

technical field [0001] The invention relates to the technical field of data services, in particular to a method, a system and a PSAM card for updating keys of smart cards. Background technique [0002] E-wallet is a financial IC card application designed to facilitate on-site small-amount consumption by cardholders. It supports functions such as transfer, consumption, balance inquiry and transaction details inquiry. [0003] With the rapid development and technological integration of short-distance communication technology and e-commerce technology, financial IC cards can be smart cards with contactless functions, such as (U)SIM cards (Subscriber Identity Module, Subscriber Identity Module) in mobile phones. The cardholder deposits a certain amount of money in the card in advance, and places it in the on-site offline payment account on the card, and deducts the transaction amount from the account offline when making a consumption transaction. [0004] In order to ensure the...

Claims

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Application Information

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IPC IPC(8): G07F19/00
Inventor 乐祖晖柏洪涛
Owner CHINA MOBILE COMM GRP CO LTD
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