CN1777101A - Real-time identity authentication method based on mobile phone, bluetooth and two-dimensional barcode - Google Patents
Real-time identity authentication method based on mobile phone, bluetooth and two-dimensional barcode Download PDFInfo
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- CN1777101A CN1777101A CN 200510047802 CN200510047802A CN1777101A CN 1777101 A CN1777101 A CN 1777101A CN 200510047802 CN200510047802 CN 200510047802 CN 200510047802 A CN200510047802 A CN 200510047802A CN 1777101 A CN1777101 A CN 1777101A
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Abstract
The method for authenticating ID is related to handset, blue teeth communication technique and 2D bar code technique synthetically. Characters are that using blue teeth function of handset builds connection with server; using cipher key agreed on user in advance encrypts dynamic cipher generated by server, and transfers the encrypted dynamic cipher to handset; handset converts the decrypted dynamic cipher to information of 2D bar code, and displays the bar code on screen of the handset; server end uses camera header to take image of handset screen so as to recognize information of 2D bar code, and interpret the dynamic cipher contained; matching dynamic cipher from screen with dynamic cipher created before to authenticate user's ID. Advantages are: without need of carrying certificate, not easy of imitating features of authentication, solving issue of capturing and stealing information of authentication.
Description
Technical field
The invention belongs to information security identity identifying technology field, relate to a kind of identity identifying method that uses mobile phone, comprehensive utilization blue-tooth technology and 2D bar code technology.
Background technology
The traditional advantages such as two-dimensional bar code is novel barcode technology, and it is simple except the making that bar code had, cost is low, information gathering speed is fast, also have high density, have error correcting capability, contain much information, multiple advantage such as high safety.At present from image construction, two-dimensional bar code has three kinds of stacks, checkerboard type, matrix form.Two-dimensional bar code is extensive use of in the world, the domestic national standard of also having formulated PDF417 and QR sign indicating number.
At present, mobile phone is extensively popularized as a kind of common personal portable electronic product, and the various aspects of going into the thick of life.The volume of holding of China's mobile phone has surpassed landline telephone quantity has been installed, and still in rapid growth.Simultaneously the performance of mobile phone is also in continuous enhancing, and function is abundant gradually, and no longer only traditional communication tool forms and is important digitlization auxiliary equipment.The mobile phone that is using at present has bigger screen mostly, and short-distance wireless communication functions such as subsidiary bluetooth can independently be installed the software that JAVA, C++ write by the user.
Bluetooth is a kind of short-distance wireless interconnection technique that is taken the lead in developing by Ericsson Nokia, Intel, IBM and Toshiba etc., is operated on the 2.4GHz frequency range.It provides the equipment that has Bluetooth chip or adapter more than two to carry out wireless connections, and communication distance is grown up and be about 10 meters most, and is non-directional, can carry out data and voice transfer in real time, and higher transmission rate is arranged.As a kind of wireless transmission method, bluetooth is very convenient easy-to-use, but because it has characteristics such as do not have linear, non-directional and coverage is wider, but is stolen easily or intercepts and captures, and confidentiality and fail safe are relatively poor.
Existing identity identifying method approximately is divided three classes:
1, based on the identity identifying method of static password
These class methods are traditional identity identifying methods, have mature technique and are widely used.It can be divided into input cipher and certificate formula two classes again according to the form of expression.
In input cipher method, the user will carry out authentication, need utilize keyboard input password under designated equipment or system.This mode can intercept password because exposed keypad outside, is damaged easily, and at keyboard or system wooden horse class software is set.
In the method for using certificate, generally be to use bar code information or other explicit, implicit expression graph text informations on the special scanning device checking certificate, perhaps use card reader to read the information of magnetic card.In using the system of these class methods, certificate often occurs and lost efficacy, perhaps certificate content situation about being replicated because damage.
Based on the system of static password authentication method, it is unified shortcoming and is: have the cost of device of buying particular device, password remains unchanged for a long period of time, easily is replicated imitation even penetrates, and it is convenient inadequately or the like to use.There are a lot of potential safety hazards in this type systematic, more and more can't adapt to the demand that improves day by day.
2, based on the identity identifying method of dynamic password
Dynamic password is meant that the user uses Special Equipment or software, all produces a password at random when each authentication, is confirmed the correctness and the identity verification of this password by Verification System.System based on these class methods needs the user to carry special dynamic password generation equipment, and the equipment of certain software perhaps need be installed.And the product that wherein uses wireless signal to carry out communication, the possibility that exists transmission information to be intercepted and captured.
3, based on the identity identifying method of biological characteristic
The identification of end user's body characteristics comprises fingerprint, people's face, sound or the like.Easy to use, but be subjected to unexpected situation, the influence of health in person easily, also may be replicated imitation, some equipment manufacturing cost height.
Summary of the invention
The object of the present invention is to provide the identity identifying method of a kind of convenient and practical, highly versatile, highly effective and safe, additionally carry certificate or equipment to solve the user that needs who exists in the existing identification system, authentication feature is easily imitated, and problem may be intercepted and captured, steal etc. to authentication information.
Technical scheme of the present invention is:
The user at first installs at the mobile phone end and is used for the client software of authentication and registers at server end, when authentication, set up being connected between mobile phone and the certificate server by bluetooth, server is tentatively confirmed visitor's identity according to the information that mobile phone provides, return a random cipher to mobile phone, and temporarily preserve this password at server end; The random cipher that mobile phone returns server is interpreted as two-dimensional bar code and is presented on the screen; Certificate server obtains mobile phone screen and extracts the two-dimensional barcode information of explaining wherein by camera, with identifying user identity; The random cipher that produces ceases to be in force automatically under the situation that does not have success identity behind the authentication success or in a period of time.And provide the remedial measure when meeting accident.System configuration is referring to Fig. 2.
The user is installed in the mobile phone end with software, and registers at server end.Client software writes down sign, the user ID of this authentication server and determines a static keys, after this static keys is used the MD5 algorithm for encryption, recorded mobile phone end and server end respectively, except that revising log-on message, can't be transmitted by any way from now on.As Fig. 4.
After the user carried the communication context of bluetooth equipment that mobile phone enters certificate server, client software detected the information on services of server end by bluetooth equipment broadcasting, and whether the prompting user connects.If the user confirms to connect, then connect and corresponding user ID is sent to server.
Server is just known user identity, and is produced dynamic password at random by the identification user ID.Verification process afterwards provides two kinds of technical solutions.
Scheme one:
Server end uses the user key (via the MD5 algorithm for encryption) of storage in advance to use symmetric encipherment algorithm RC2 to encrypt to dynamic password, and the information after encrypting is sent it back client.
The client user key (equally via the MD5 algorithm for encryption) of storage, perhaps the value of password after md5 encryption of the instant input of user is decrypted the information that obtains.
Client will be converted to Data Matrix two-dimensional barcode information through the dynamic password that deciphering obtains and show.Before the user places camera with mobile phone screen, by the camera collection image.
Server end is analyzed the contained information of two-dimensional bar code that obtains with the image of camera collection.By being original form with these information revertings, i.e. if dynamic password, and it is compared with the dynamic password that is kept at server end is identical then confirm its identity.
If authentication success or long-time from the correct image information of screen acquisition is then abandoned dynamic password.
Scheme two:
Server end directly sends dynamic password to client.
Client uses the user key through md5 encryption to carry out the RC2 encryption dynamic password.
Cipher-text information after client will be encrypted is converted into Data Matrix two-dimensional barcode information and is presented on the screen.Before the user places camera with mobile phone screen, by the camera collection image.
Server end is analyzed two information that bar code is contained that obtain with the image of camera collection.And the user key (via md5 encryption) that uses the server end storage compares with decrypted result its deciphering again with dynamic password, if identical then confirm its identity.
If authentication success or long-time from the correct image information of screen acquisition then all can cause dynamic password to lose efficacy.Fig. 3 has described the identifying procedure of first kind of scheme.
Authentication Once you begin, whole processing procedures of authentication all can record in the journal file, so that verification in the future.
Allow the user that mobile phone end program is carried out cryptoguard among the present invention, perhaps user key is not stored in this locality, but is imported immediately by the user, further to carry the high security of system.
Measures such as user's internet usage, note, on-site manual are provided among the present invention, have closed account, cancelled it and continue the right to use, with remedial measure as lost mobile phone with this.The flow process that closes account such as Fig. 5.
The generation of Data Matrix two-dimensional bar code, error correction and deciphering technology are all followed international standard ISO/IEC16022-International Symbology Specification, Data Matrix among the present invention.
The invention also discloses a kind of recognition methods of two-dimensional bar code, location two-dimensional bar code and discern the information of two-dimensional bar code from the captured mobile phone screen image of camera is referring to accompanying drawing 6.Specifically comprise the steps:
1, crosses the true color image that camera obtains mobile phone screen.Effect such as Fig. 7.
2, the redness of image, blue two-phase are carried out mean filter, common reddish blue speckle when LCD screen being taken to eliminate.
3, with image gray processing.
4, dark partially according to body color around the image, the characteristic that the intermediate screen color is bright is partially added up definite threshold value to the gray value of entire image, in conjunction with the method to carrying out linear punishment around the image, extracts the mobile phone screen zone from image.
5, use maximum variance between clusters with the bianry image of above-mentioned mobile phone screen area image binaryzation with the acquisition mobile phone screen.
6, use the edge of the above-mentioned bianry image of Sobel operator extraction to obtain edge image.Referring to Fig. 8.
7, above-mentioned edge image is used the Radon conversion, extract the straight line in the image.
8, angle is spent to the straight line between 95 degree extracting 85, with the pixel projection near certain zone to straight line, with dot matrix zone, location.Referring to Fig. 9.
9, revolve positive image according to rectilinear direction,, and extract two-dimensional barcode image according to the deformation of included angle of straight line correct tilt.As Figure 10.
10, according to known dot matrix size, dot matrix image is divided equally, judged the color value in every lattice, obtain the numerical value of dot matrix, transfer to system check, decoding.
Effect of the present invention and benefit are:
The present invention uses mobile phone as the user side carrier, does not need extra equipment.Because mobile phone screen itself is luminous, so collecting device also need not to use lighting module.Simultaneously because the high privacy of mobile phone has also reduced user side information by the possibility of other people acquisition.
The present invention uses image to transmit final authorization information, and with two-dimensional bar code information is expressed.Information was discerned easily, avoid non-directional, the publicity of wireless transmission again, made the disabled user can't intercept and capture, decode, duplicate, simulate final authorization information, thereby kept wireless mode, do not lose easyly easy-to-use the time, greatly improved security performance.The displaying that the user can be by bar code simultaneously and discern this process is confirmed to be to the designated equipment request of having sent and is identified, and has reduced the user to using the indefinite worry of connecting object of wireless device, makes that this method is easier to be accepted.
The present invention uses dynamic password, has guaranteed the ageing of authorization information.Even if the cracker can duplicate authorization information, also can't repeat verification process, further increased degree of safety.
Description of drawings
Fig. 1 is an organizational composition schematic diagram of the present invention.
Among the figure: 1 mobile phone; 2 mobile phone screens; 3 cameras; 4 support the PC or the server of bluetooth communication; 5 connect the Bluetooth adapter of PC or server.
Fig. 2 is an architectural schematic of the present invention.
Fig. 3 is checking stream signal journey figure of the present invention.
Fig. 4 is a Registering modules schematic flow sheet of the present invention.
Fig. 5 is a cancellation module schematic flow sheet of the present invention.
Fig. 6 is a two-dimensional bar code identification process schematic diagram of the present invention.
Fig. 7 is a camera photographic images illustration of the present invention.
Fig. 8 is in the above-mentioned two-dimension bar code recognition method, through the effect illustration behind screen extraction, the edge extracting.
Fig. 9 is in the above-mentioned two-dimension bar code recognition method, the two-dimensional bar code region figure that straight line extracted that conversion identifies according to Radon.
Figure 10 is in the above-mentioned two-dimension bar code recognition method, the two-dimensional barcode image figure that is extracting after just revolving, proofreading and correct.
Figure 11 is the architectural schematic of embodiment 1.
Figure 12 is the architectural schematic of embodiment 2.
Embodiment
Be described in detail specific embodiments of the invention below in conjunction with technical scheme and accompanying drawing.
Embodiment 1:
As Figure 11, it has provided gate control system and has used one embodiment of the present of invention.
The hardware device of the server end of this gate control system is by a PC that can move WindowsXP SP2 with upper mounting plate, and a WindowsXP SP2 bluetooth drives compatible bluetooth communication module, and a camera constitutes.Identity authorization system service end software is installed on the PC.
The client of this gate control system is any support Bluetooth function, screen resolution greater than 50 * 50 mobile phone, the smart mobile phone that comprises operation Symbian, Windows, linux system, support the CDMA mobile phone of Brew platform, and other support JSR82 API, the i.e. mobile phone of Java APIs for Bluetooth WirelessTechnology (JABWT).The mobile phone end need be installed the client-side program of corresponding corresponding platform.This example is the example explanation with the mobile phone that uses the Symbian system.
At first the user is in the registration of gate inhibition's server end, at server end input user ID and password A, simultaneously at mobile phone end software input username and password A.The password of server end and mobile phone end uses the MD5 algorithm for encryption as word string B and storage, as user key.The user also need on mobile phone, import and server exclusive service ID number and PIN code.This ID number is 16 ten's digits, in order to distinguish different identification service systems.PIN code can be set by server administrators, and it mainly acts on is to avoid the connection of other bluetooth equipments to disturb.Registration back user can try out the accuracy of gate control system with confirmation at once.
Behind the startup of server, use the RFCOMM agreement, start bluetooth Socket service, and outwards issue this service.Behind the client software on user's starting hand-set, client software begins to seek bluetooth service, and attempts using PIN code to connect.If successful connection, then server end sends service ID number to client, and whether client validation is the registered service for checking credentials.If then return confirmation to server.Server generates 64 dynamic password C after receiving confirmation at random, uses above-mentioned string B to carry out becoming string D after RC2 encrypts, and sends to user mobile phone.Mobile phone receives behind the string D string B with local storage and is decrypted and obtains dynamic password C, and with the two-dimensional bar code of dynamic password C according to the standard generation 20 * 20 of Data Matrix.The mobile phone end calls drawing interface, and the form of two-dimensional bar code with the white background stain is presented on the screen.
The user represents mobile phone screen to the camera that is installed on the door, and camera cut-away view picture also is sent to server.Server end is converted to binary message by the two-dimensional bar code recognizer with the image information of two-dimensional bar code.The information of using Data Matrix standard method to understand two-dimensional bar code is string D.If image is then obtained in the verification failure again in the process of understanding.Whether server authentication string D and dynamic password C coincide, with identifying user identity.If be proved to be successful, then send the information of opening the door to electronic gate.
If be proved to be successful, perhaps server did not obtain correct authorization information in 20 second time, announced that then dynamic password lost efficacy.The server disconnection is connected issuing service again with client.
If mobile phone is lost, can arrive the server end logging off users, prevent that mobile phone from illegally being used.
The gate control system that this embodiment showed can be used for family, sub-district and various enterprises and institutions.
Embodiment 2:
As Figure 12, market consume system use one embodiment of the present of invention have been provided with bank's networking.Its flow process and the foregoing description 1 are similar, and difference is:
The user registers in bank, obtains service ID number from bank.The service ID of consume system number only is used to distinguish different bank.Same bank is number all identical in the service ID of each market consume system.The user can be in the service of the bank that the selection of mobile phone end will be used.
The market obtains static keys after md5 encryption, promptly above-mentioned string B by bank network from bank server in checking user profile.User's relevant information is not possessed in the market.If the Information Authentication success is then finished consume activity by bank network.
Cancellation can be by Web bank, I nullify to multiple modes such as bank, notes.
The consume system that present embodiment is showed can be used for various markets, supermarket, hotel or other consumption places.
Claims (2)
1, a kind of real-time identity authentication method based on mobile phone, bluetooth and two-dimensional bar code, be at mobile phone, camera, the authentication server of supporting bluetooth communication and can be connected on the bluetooth communication equipment of authentication server and realize, it is characterized in that: mobile phone is as client, and sets up wireless connections by bluetooth communication equipment between the certificate server; Camera is as image collecting device, and sets up wired connection between the certificate server; Server is tentatively discerned user identity by the information that client is sent after setting up wireless connections with client; After just knowing successfully, server generates dynamic password, and uses the user key of just knowing the user to encrypt this dynamic password, and ciphertext is issued mobile phone; The ciphertext that mobile phone uses the user key deciphering to receive obtains dynamic password, and is that two-dimensional bar code is presented on the screen with the dynamic password information translation; Server is taken mobile phone screen by camera, and the two-dimensional bar code on the recognition screen is understood the dynamic password information that is contained in the two-dimensional bar code, and is complementary with identifying user identity with the dynamic password that generates before.
2, in a kind of real-time identity authentication method according to claim 1 based on mobile phone, bluetooth and two-dimensional bar code, the method that is used to discern the two-dimensional bar code on the mobile phone screen is characterized in that: image is carried out red blue mean filter, common redness, blue speckle when eliminate taking mobile phone screen; Behind image gray processing, extract the mobile phone screen zone; Use difference method binaryzation mobile phone screen zone between maximum kind; Use the marginal information of Sobel operator extraction two dimensional image; Use the straight line in the Radon conversion extraction two dimensional image; It is right to extract orthogonal straight line, and judges the dot matrix zone; Revolve positive image, proofread and correct deformation and extract two-dimensional barcode image; Two-dimensional barcode image is divided equally to obtain two-dimensional barcode information.
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| WO2008034348A1 (en) * | 2006-09-15 | 2008-03-27 | Fujian Newland Auto-Id Tech. Co., Ltd. | Device and method for reading encrypted barcodes |
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| CN104780043A (en) * | 2014-01-14 | 2015-07-15 | 中国电信股份有限公司 | Access control method and system based on two-dimension code |
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