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Method and equipment for writing in seed secret key in NFC dynamic token

A dynamic token and token technology, applied in the field of information security, can solve the problems of poor flexibility and security, and achieve the effect of improving security and flexibility

Active Publication Date: 2016-11-09
FEITIAN TECHNOLOGIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and device for writing a seed key in an NFC dynamic token to overcome the defects of poor flexibility and security of the existing dynamic token

Method used

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  • Method and equipment for writing in seed secret key in NFC dynamic token
  • Method and equipment for writing in seed secret key in NFC dynamic token
  • Method and equipment for writing in seed secret key in NFC dynamic token

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] Embodiments of the present invention provide a method for writing a seed key in an NFC dynamic token, such as figure 1 shown, including the following steps:

[0039] Step 101, the client establishes NFC communication with the NFC dynamic token.

[0040] Wherein, the client can be installed in a device with NFC function.

[0041] Step 102, the client sends a first instruction to the NFC dynamic token, and receives the first random number returned by th...

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Abstract

The invention discloses a method and equipment for writing in a seed secret key in a NFC dynamic token. The method comprises the following steps that: a client side obtains the token serial number of the NFC dynamic token, receives a first random number from the NFC dynamic token to generate a second random number, stores the token serial number and the second random number, and sends the token serial number, the first random number and the second random number to a token server; the client side receives a second ciphertext from the token server, and decrypts the second ciphertext by using the token serial number and the second random number stored recently so as to obtain a first ciphertext and a check value; and the client side sends the first ciphertext and the check value to the NFC dynamic token. By means of the method and the equipment disclosed by the invention, the seed secret key is programmed in the NFC dynamic token through a NFC channel; and thus, the safety and the flexibility of the dynamic token are improved.

Description

technical field [0001] The present invention relates to the field of information security, in particular to a method and device for writing a seed key in an NFC (Near Field Communication, near field communication) dynamic token. Background technique [0002] A dynamic token is a device used to generate a dynamic password, which is widely used in application fields such as online banking, telecom operators, and e-government. The dynamic password generated by the dynamic token can be used for identity authentication, which can effectively improve the security of identity authentication. [0003] In the prior art, before the dynamic token leaves the factory, the seed key necessary for generating the dynamic password is programmed into the dynamic token by the manufacturer of the dynamic token. During the use of the dynamic token, the seed key in the dynamic token cannot be updated according to the user's needs, and the flexibility and security are poor. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L9/32
CPCH04L9/0869H04L9/3213H04W4/80
Inventor 陆舟于华章
Owner FEITIAN TECHNOLOGIES