CN202143078U

CN202143078U - Dynamic password obtaining device with additional RFID

Info

Publication number: CN202143078U
Application number: CN201120203084U
Authority: CN
Inventors: 李滨; 陈勇; 林云鹏; 林辉
Original assignee: JIANGSU WOOTIDE INFORMATION TECHNOLOGY Co Ltd
Current assignee: Mashangyou Technology Co ltd
Priority date: 2011-06-16
Filing date: 2011-06-16
Publication date: 2012-02-08
Anticipated expiration: 2021-06-16

Abstract

The utility model discloses a dynamic password obtaining device with additional RFID. The dynamic password obtaining device with additional RFID comprises a dynamic password module. The dynamic password module comprises a screen display module, a clock control unit, an embedding algorithm storage unit, a logic control unit, a power supply module, and an RFID storage unit with the storage of an RFID only number. Time factors are extracted from the clock control unit by the logic control unit, RFID factors are extracted from the RFID storage unit by the logic control unit, and PINs, SNs and operation functions are extracted from the embedding algorithm storage unit by the logic control unit, such that an initial password is formed, and then a logic algorithm is carried out to finally generate a password. According to the utility model, during the manufacturing of a device, the RFID only number is written into a storage space in the dynamic password module to connect two independent devices, thereby fundamentally preventing the device from being copied and realizing an effect of only identification.

Description

The dynamic password deriving means of a kind of additional RFID

Technical field

The present invention is the Internet of Things field, is specifically related to the dynamic password deriving means of a kind of additional RFID.

Background technology

Radio frequency identification is RFID (Radio Frequency IDentification) technology; Claim electronic tag, radio frequency identification again; It is a kind of communication technology; Can discern specific objective and read and write related data through radio signals, and need not to set up machinery between recognition system and the specific objective or optics contacts.The basic functional principle of RFID technology is also uncomplicated: after label gets into magnetic field; Receive the radiofrequency signal that plug-in reader sends; Rely on the energy that induced current obtained to send out product information (the Passive Tag that is stored in the chip; Passive label or passive label), perhaps initiatively send the signal (Active Tag, active label or active tag) of a certain frequency; After plug-in reader reads information and decoding, deliver to CIS and carry out the relevant data processing.The RFID technology is widely used in logistics at present and processing, document tracking/library management, animal identification sign, motion timing, the automatic charge of gate inhibition's control/electronic entrance ticket road etc. are wrapped up in supplies management, the manufacturing and assembling, aviation luggage processing, mail/fast freight.

Dynamic password is also claimed dynamic password, is to generate a uncertain random digit combination according to special algorithm, and each password can only use once.Dynamic password is a kind of account anti-theft technology of safe and convenient, can effectively protect the authentication security of transaction and login, adopts dynamic password just to need not regular password, and safety is saved worry, and this is an extra value of this technology, and enterprises and institutions' internal application is particularly useful.This technology is widely used in applications such as Net silver, network game, telecom operators, E-Government, enterprise at present.

Summary of the invention

Goal of the invention: the objective of the invention is to REID is combined with the dynamic password technology, a kind of dynamic password deriving means that can guarantee the additional RFID of ID identity uniqueness to greatest extent is provided.

Technical scheme: the dynamic password deriving means of additional RFID of the present invention; Comprise the dynamic password module, comprise screen display module, clock control cell, embedding algorithm stores unit, logic control element and power module in the said dynamic password module; It is characterized in that: also comprise the RFID memory cell that stores the RFID unique number in the said dynamic password module;

Said logic control element from said clock control cell extraction time the factor; From said RFID memory cell, extract the RFID factor; From said embedding algorithm stores unit, extract PIN code, SN sequence number and operation function, produce password token (also claiming dynamic password) carrying out logical algorithm after said time factor, the RFID factor, PIN code and the SN sequence number formation initial challenge; Said screen display module is used to show the password token; Said power module is used to provide the power supply of package unit work; Said clock control cell is used to produce precise time, also the time is finely tuned simultaneously.

Dynamic password module and time synchronized in apparatus of the present invention, dynamic password of its conversion in per 60 seconds, dynamic password is once effective, and it produces 6/8 dynamic digitals.Different with other similar tokens is that these dynamic numerals are to get through a kind of algorithm according to the RFID sign that is attached in this token.That is to say, be that the generation of dynamic password has write the RFID incidence relation when equipment packages, and this has guaranteed the uniqueness of this password board.Usually distinguish for the counterpart token, each password board all can have a special numbering.In our device, this numbering is exactly the RFID equipment that is attached in the device.When using, obtaining all of dynamic password obtains according to the in advance built-in RFID factor each time.The possibility that this has also simultaneously fundamentally been avoided the password board to be replicated.

For the function of further increase with external device communication; Also comprise the RFID module in the said device, said RFID module is installed in the lower floor of said dynamic password module, is associated with said dynamic password module; Label as device is read by external equipment through radio signals.

According to the difference of operating frequency, rfid system can be divided into low frequency, intermediate frequency, radio frequency system.Low frequency system is generally operational in 100～500kHz, and if system is operated in about 10～15MHz, and they mainly are applicable to the identification that distance is short, cost is low.And radio frequency system can reach the microwave section of 850～950MHz and 2.4～5GHz, is suitable for the occasion that decipherment distance is long, the rate that reads and writes data is high.RFID module in this device belongs to low-frequency range, and operating frequency range is 100～150kHz, surplus the ultimate range of identification can reach 20 centimetre, has that price is low, a good reliability, transmitting range characteristic far away.Can be widely used in fields such as traffic, medical treatment, food and drink, work attendance, automobile burglar, gate inhibition security personnel.In this device, RFID independently exists as a function integration module, is installed in the lower floor of device.

The present invention compared with prior art; Its beneficial effect is: 1, the present invention is through being provided with the RFID memory module in the dynamic password module; On function and structure, accomplished dynamic password and technological the combining of RFID, the unique number with RFID in the device fabrication process writes the memory space in the dynamic password module, accomplishes the association of two autonomous devices; Fundamentally stop the possibility that equipment is replicated, played the effect of unique ID; 2, the present invention has possessed dynamic password simultaneously and has obtained the function with RFID, and the two combination is replenishing each other two kinds of technology; 3, in the higher applied environment of some safety requirements,, can guarantee the uniqueness of ID identity to greatest extent through the identification of uniting of RFID and dynamic password; 4, the present invention has wide application at Internet of Things, particularly has application advantage aspect the sign article ID; 5, the RFID module among the present invention belongs to low-frequency range, and operating frequency range is 100～150kHz, surplus the ultimate range of identification can reach 20 centimetre, has that price is low, a good reliability, transmitting range characteristic far away.

Description of drawings

Fig. 1 produces flow process like figure for dynamic password.

Fig. 2 is the dynamic password deriving means structural representation of additional RFID.

Fig. 3 is for generating the dynamic password schematic diagram.

Fig. 4 is dynamic password maker modular structure figure.

Embodiment

Be elaborated in the face of technical scheme of the present invention down, but protection scope of the present invention is not limited to said embodiment.

Embodiment 1: the dynamic password deriving means at the additional RFID of the present invention, be divided into RFID module and dynamic password module two big modules, and as shown in Figure 2.The dynamic password module is installed in the upper strata of RFID as a standalone module, is used for generating and showing dynamic password (password).The RFID module is installed in the lower floor of dynamic password module, is associated with the dynamic password module, and the label as device is read by external equipment through radio signals.

Said dynamic password modular structure is as shown in Figure 4, comprises screen display module, clock control cell, embedding algorithm stores unit, logic control element and power module; It is characterized in that: also comprise the RFID memory cell that stores the RFID unique number in the said dynamic password module;

Said logic control element from said clock control cell extraction time the factor; From said RFID memory cell, extract the RFID factor; From said embedding algorithm stores unit, extract PIN code, SN sequence number and operation function, produce the password token carrying out logical algorithm after said time factor, the RFID factor, PIN code and the SN sequence number formation initial challenge; Said screen display module is used to show the password token; Said power module is used to provide the power supply of package unit work; Said clock control cell is used to produce precise time, also the time is finely tuned simultaneously.

It is as shown in Figure 3 to generate the dynamic password principle: form initial challenge by Sn sequence number, the PIN code RFID factor and time factor (is main with time synchronized mechanism) earlier; This initial challenge character string just is the equal of a string plaintext; This plaintext is carried out ciphering process through the one-way hash function algorithm, form the password summary, again according to the password length value of setting; This password summary is carried out certain algorithm conversion, be met the password of preseting length at last.

Hashing algorithm also is called as one-way hash function, hash algorithm, hash function or Message Digest 5.So-called unidirectional, even be, also be difficult to from a large amount of result sets, carry out reductive analysis, reverse functional relation of shining upon between independent variable and variable because based on a lot of end value collection.Through analyzing the characteristics of one-way hash function; Can sum up: its integrated application function characteristics such as nonlinear function, logical function; Through iterative idea repeatedly; Can the character string of a random length be converted to regular length, irreversible character string as a result, so this as a result character string also be called as eap-message digest.

What deserves to be mentioned is that in the dynamic password module, the dynamic password of this device has used the RFID factor when generating, that is:, the RFID sign is associated with in the password generation module through hardware mode.When generating password, through reading this ID value that is stored on the hardware, and will be worth a condition of conduct calculating password, obtain final dynamic password through hash algorithm.

The production procedure of dynamic password is as shown in Figure 1; When the user triggers demonstration through device (press and obtain the password button); Device at first obtains correct time from clock control cell; Obtain the RFID factor that is stored in the device from the RFID memory cell simultaneously, combine PIN code and SN sequence number to generate dynamic password then, at last this password is presented on the screen through the hash algorithm that is preset in the memory cell.

This device has the function of RFID and dynamic password simultaneously; Different with common integration is, in the module that the dynamic password of this device generates, has added the RFID memory cell; This unit is as one of embedded password forming factors; With the generation of password close incidence relation is arranged, have only this calculated factor, can carry out the generation action of password through in memory cell, storing.When generating password, with combining current clock unit and RFID identification data (we are referred to as the dynamic password RFID factor with this data necessary) to calculate final dynamic password.

Above compute mode and physical function structures shape this device duplicate will and difficulty; This has effectively solved the safety issue of leading therefrom; In addition, this device is except the repertoire that possesses common RFID, through the use of uniting of RFID and dynamic password; This device can carry out unique affirmation to user ID, and this also is applicable to the environment that fail safe is had higher requirements.

As stated, although represented and explained the present invention that with reference to specific preferred embodiment it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the accompanying claims definition, can make various variations in form with on the details to it.

Claims

1. the dynamic password deriving means of an additional RFID comprises the dynamic password module, comprises screen display module, clock control cell, embedding algorithm stores unit, logic control element and power module in the said dynamic password module; It is characterized in that: also comprise the RFID memory cell that stores the RFID unique number in the said dynamic password module;

2. the dynamic password deriving means of additional RFID according to claim 1; It is characterized in that: also comprise the RFID module in the said device; Said RFID module is installed in the lower floor of said dynamic password module; Be associated with said dynamic password module, the label as device is read by external equipment through radio signals.

3. the dynamic password deriving means of additional RFID according to claim 2, it is characterized in that: said RFID module operating frequency range is 100～150kHz.