CN103338109A - Method for tracing use record of cipher device and traceable cipher device - Google Patents
Method for tracing use record of cipher device and traceable cipher device Download PDFInfo
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- CN103338109A CN103338109A CN2013102077889A CN201310207788A CN103338109A CN 103338109 A CN103338109 A CN 103338109A CN 2013102077889 A CN2013102077889 A CN 2013102077889A CN 201310207788 A CN201310207788 A CN 201310207788A CN 103338109 A CN103338109 A CN 103338109A
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Abstract
The invention discloses a method for tracing use records of a cipher device and a traceable cipher device. When a challenge response one-time password is input into the cipher device, the cipher device reserves the time and the input challenge information in the cipher device so as to form a piece of use record information of the cipher device, and the use record information stored in the cipher device can be retrieved and displayed on the cipher device according to an input instruction. According to the method for tracing use records of the cipher device and the traceable cipher device, acquisition records of one-time passwords can be reserved in the cipher device (a dynamic token terminal) for necessary query and verification.
Description
Technical field
The present invention relates to a kind of dynamic password technology, but be specifically related to the trace-back technique of dynamic password operating position.
Background technology
Dynamic password is because easy to use, favorable comment that channel fit is subjected to the user by force, but owing to be not asymmetric encryption techniques, can't accomplish non-repudiation, in the case investigation, may cause ambiguity.
Because dynamic password only is a password, bank has all key elements that generate this password simultaneously, so dynamic password can't play the signature effect, can not be at the undeniable evidence of bank's end formation.
Passed through the authentication of safety system such as a dynamic password, generated but whether this dynamic password is scrambler (as dynamic token) by the user, can't prove technically at present.That is to say, the password that device generates if the user accesses to your password is concluded the business, and the user denies carrying out this transaction, and bank not have at present relevant technological means to prove that dynamic password for transaction is that scrambler (as dynamic token) by the user produces and use.
In sum, whole use and the state of existing password device (as dynamic token) can't be reviewed, and the evidence information of non-repudiation can't be provided, and when utilizing dynamic password to conclude the business the generation dispute, can't assert responsibilities of the parties accurately at all.
Summary of the invention
The present invention is directed to prior art and can't review generation and the use of dynamic password, the evidence information of non-repudiation can't be provided, and a kind of method of reviewing the scrambler operating position is provided.This method can keep the record that obtains of dynamic password at scrambler (dynamic token terminal), in order to inquire about in case of necessity and examine.
Based on said method, the present invention also provides a kind of scrambler of reviewing.It can provide the use state information of itself.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of method of reviewing the scrambler service recorder, this method comprises the steps:
(1) scrambler according to the input the challenge response dynamic password time, the operation information of scrambler is retained in the scrambler with this moment, forms the service recorder information of this scrambler;
(2) scrambler is transferred according to input inquiry instruction and is shown the service recorder information that is stored in the scrambler.
In preferred embodiment of the present invention, the operation information of described scrambler is that scrambler calculates the time of dynamic password and the challenge information of input according to the input challenge information, perhaps is that scrambler calculates the time of dynamic password, challenge information and the corresponding dynamic password of input according to the input challenge information.
Further, when the information bar that keeps in the described step (1) is counted exceed capacity, circulation is covered record before.
Further, described step (2) realizes by following steps:
(22) scrambler judges whether the challenge information of input is query statement;
(23) if query statement, scrambler enters into the service recorder query State;
(24) service recorder of storage is transferred and shown to scrambler.
Further again, described scrambler also has the password for inquiry authenticating step before transferring the service recorder of storage.
Further again, the password for inquiry that adopts in the described password for inquiry authenticating step is fixed password or one-time pad sign indicating number.
Further again, when described password for inquiry was fixed password, scrambler can't be according to keyboard input instruction deletion service recorder.
As second purpose of the present invention, a kind of scrambler of reviewing, it comprises the keyboard that calculating is used display screen and imported usefulness with MCU, demonstration, described MCU control connection display screen and keyboard, described scrambler also comprises for the memory cell that keeps service recorder information, described memory cell and MCU data are joined, and time and challenge information when store M CU calculates dynamic password are as the service recorder information of scrambler; The service recorder information in the memory cell is transferred in the instruction that described MCU imports according to keyboard, and shows by display screen.
Further, described memory cell is the memory that is placed on the MCU outside.
Further, described memory cell is the RAM of MCU inside.
Thus, the operating position that scheme provided by the invention can the accurate recording scrambler realizes the generation of dynamic password and reviewing of use.When dispute produces, can provide the evidence information of non-repudiation, in order to can determine the dispute responsibilities of the parties quick, clear, accurately.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is flow chart of the invention process;
Fig. 2 can review the structure principle chart of scrambler for externally positioned type;
Fig. 3 can review the structure principle chart of scrambler for internally-arranged type.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
The present invention is implemented in scrambler (token terminal) and goes up the record that obtains that keeps dynamic password, when the user accesses to your password device, user's effective input and service time is noted, in order to inquire about in case of necessity and examine.
Accordingly, the invention provides a kind of method of reviewing the scrambler operating position, during its concrete enforcement, scrambler at first according to the input the challenge response dynamic password time, with the operation information of scrambler this moment (as this moment scrambler time and the challenge information of input) be retained in the scrambler, form the service recorder information of this scrambler; When needs were inquired about the service recorder of this scrambler, scrambler was transferred according to input instruction and is shown the service recorder information that is stored in the scrambler.
When the present invention preserves service recorder in scrambler, at first, be used for generating the challenge information of dynamic password by the information input part on the scrambler (as keyboard) input;
The MCU of computer center of scrambler obtains corresponding dynamic password according to challenge information and the seed of self of input by cryptographic calculation, and shows dynamic password by display screen.Producing method for dynamic password in this step is not limited to this, also can adopt other modes, if can reach certain fail safe both can, as in aforesaid way at the joining day factor;
Scrambler can start writing function when calculating dynamic password, will keep for generation of the challenge information of the key entry of dynamic password, the information such as time that produce dynamic password, form the service recorder information of this scrambler.When preserving, can preserve successively according to the time.Be not limited to challenge information, time etc. for the information of preserving, can also preserve other information as required, as the information such as dynamic password that produce.These canned datas only otherwise the use that influences scrambler safely can, more information is convenient to inquiry and the evidence obtaining in later stage.
Because the limited storage space of general scrambler, the conventional retainable service recorder information bar of scrambler number is the 20-50 bar, exceed capacity, the record before circulation covers.So namely can not influence the overall structure of scrambler, can satisfy the requirement of later stage inquiry again.But the bar number that keeps service recorder information as required can increase or reduce.
Finish the preservation of service recorder based on such scheme, below specify the inquiry of service recorder.
In query scheme of the present invention, adopt special challenge information as the entrance of service recorder information inquiry, it is query statement, as " 9.8.7.6 ", this query statement is pre-stored in the scrambler, as the challenge information of query note, it can not effectively avoid misoperation as the challenge information of user's practical business.
Referring to Fig. 1, the process of service recorder of inquiring about corresponding scrambler (as dynamic token) is as follows:
Step 1 is keyed in corresponding challenge information by the keyboard on the scrambler.
Step 2, the MCU in the scrambler compares the challenge information of key entry and the query statement of storage, judges whether the challenge information of keying in is query statement; If change step 3 over to; If not then changing the normal challenge of scrambler over to should handling process (as the flow process of dynamic password generation).
Step 3, the MCU in the scrambler enters inquiry service recorder information state, and requires the input inquiry password;
Step 4 is imported corresponding password for inquiry by the scrambler keyboard.
Step 5, the password for inquiry that the keyboard of the MCU in the scrambler enters authenticates, and judges whether it is correct password for inquiry; If correctly change step 6 over to; If incorrect, change step 3 over to; Finish the authentication of password for inquiry thus, effectively improve the fail safe that scrambler is preserved service recorder.
Step 6, the MCU in the scrambler transfers the service recorder information of storing in the scrambler, and shows by the display screen of scrambler, and whole query script finishes accordingly.
In above-mentioned query scheme, step 3 to 6 in, can withdraw from the service recorder query State as required, enter into the state of the challenge informations to be entered such as routine of scrambler.Specifically can realize as exit instruction by the information that special key is keyed in, as " deletion " key.
Simultaneously, when showing in step 6, the UTC time of recording when obtaining dynamic password is converted to Beijing time and shows, shows and simplifies as far as possible; Can adopt multipage to show that downturning key carries out page turn over operation to content displayed in the employing for many information.
Also have, in step 6, forbid content displayed is deleted, MCU in the scrambler judges that the information that delete key is keyed in the keyboard is exit instruction, when keying in deletion, scrambler withdraws from the service recorder query State, enters into the state of the challenge informations to be entered such as routine of scrambler, mistake deletion and the malice avoiding like this recording are deleted the integrality of guarantee information.
Password for inquiry authentication function for being realized by step 4 and step 5 in the query scheme according to circumstances can not need, and password for inquiry is made as sky, can improve the convenience of inquiry like this.
And the password for inquiry authentication function in actual use, and this function is not open to the user, just dispute occurring, uses when examining transaction content.It specifically can adopt these two kinds of authentication modes of fixed password and one-time pad.
For the fixed password mode: fixed password is generated by the scrambler publisher, is specifically as follows a random number, and each scrambler has own corresponding fixing password for inquiry.In scrambler is produced, generate and offer scrambler manufacturer by the scrambler publisher, and write in the scrambler by scrambler manufacturer, and the use user of scrambler can not revise.
When this mode is carried out the password for inquiry authentication, the MCU in the scrambler will transfer the password for inquiry that prestores and compare with the password for inquiry that is entered by keyboard, if identical, then authenticate by password for inquiry; If different, judge the password for inquiry mistake, can't authenticate by password for inquiry.
This fixed password mode operational version has stronger security reliability.
For the one-time pad mode: this mode is carried out cipher authentication at every turn and is all adopted different passwords for inquiry, when this mode is carried out cipher authentication, when each mode by special challenge entered into query State, the MCU in the scrambler produced and also shows a query requests sign indicating number (it is specifically as follows a random number or other corresponding parameters); This query requests sign indicating number is input in the backstage Verification System of dynamic password, this Verification System as challenge, and calculate to obtain password for inquiry with the query requests sign indicating number; Enter Verification System by the scrambler keyboard and obtain password for inquiry; Then, the seed that the MCU in the scrambler utilizes self is calculated with the own query requests yardage that produces and is produced corresponding inquiry code, and enters inquiry code with keyboard and compare, and as if identical, then authenticates by password for inquiry; If different, judge the password for inquiry mistake, can't authenticate by password for inquiry.
Adopt this mode, its each password for inquiry is all inequality, safe.
Accordingly, the present invention realizes reviewing of scrambler operating position, can be when utilizing dynamic password to conclude the business to produce dispute, and the responsibilities of the parties identification provides the service recorder information of non-repudiation.
On the basis of such scheme, the present invention also provides accordingly can review scrambler 100, and this scrambler can be realized preservation and the inquiry of service recorder.
Referring to Fig. 2, this scrambler 100 mainly comprises calculating use MCU(101), show with the keyboard 103 of display screen 102, input usefulness and the memory 104 that is used for storing service recorder information.
MCU(101 as computer center), its control connection display screen 102, keyboard 103 and memory 104.
Memory 104 is placed on MCU(101) the outside, the time when being used for store M CU and calculating dynamic password, the challenge information of key entry, it also stored corresponding dynamic password as required as the service recorder information of scrambler.Except the service recorder of storage scrambler, it is also stored as the inquiry challenge information of inquiry entrance and the password for inquiry that is used for authentication.
The service recorder information in the memory cell is transferred in the instruction that MCU in the scrambler imports according to keyboard, and shows that by display screen concrete process is as follows:
1, the preservation flow process of service recorder information:
1.1, User Token (being scrambler) is in open state, be pre-stored with in this User Token as the inquiry challenge information of inquiry entrance and the password for inquiry that is used for authentication;
1.2, the user be used for to generate the challenge information of dynamic password by a keyboard entry;
1.3, after key entry is finished, and after pressing acknowledgement key, after MCU in the token receives and confirms instruction, calculate dynamic password according to the challenge information of keying in, with the challenge information of current token time and respective user input, deposit in the memory as an information simultaneously, and to store successively by surrounding time, form the service recorder information of token thus, finish the preservation of service recorder information accordingly.
2, service recorder information inquiry and procedure for displaying:
2.1, User Token the holding state of information to be entered such as is in;
2.2, the user is used for the inquiry challenge information of inquiry service recorder information by keyboard input;
2.3, the MCU of token transfers the query statement information of the conduct inquiry entrance that prestores in the memory, and judge with the challenge information contrast of being keyed in by keyboard, whether the challenge information that judgement is keyed in by keyboard is query statement information, if then enter service recorder information inquiry state; If not, then enter into normal challenge response handling process;
2.4, the MCU of token is in the state of inquiry service recorder information, and requires the input inquiry password by display screen;
2.5, enter password for inquiry by keyboard;
2.6, the password for inquiry that enters of the keyboard of MCU in the scrambler authenticates, and judges whether it is correct password for inquiry (detailed process is not given unnecessary details as mentioned above) herein; Judge whether it is correct password for inquiry; If correctly change step 2.4 over to; If incorrect, change step 2.7 over to;
2.7, the MCU in the scrambler is after authentication is by the password for inquiry of being keyed in by keyboard, transfer the token service recorder information of storing in the memory, and show by display screen, during concrete the demonstration, MCU is converted to Beijing time with exchange hour, and according to time and challenge information calculating dynamic password, on the display screen of MCU with sequence number, time, challenge and dynamic password demonstration; The user can carry out page turn over operation by the button of keyboard;
2.8, the inquiry finish after, withdraw from query State by specific keys.
The present invention also provides reviewed to the scrambler 200 of another kind of internally-arranged type, and as shown in Figure 3, it is identical that this scrambler 200 and above-mentioned scrambler 100 are formed structures, comprises MCU(201), display screen 202, keyboard 203 and memory cell 204.Difference is that scrambler 200 adopts the RAM of MCU inside as memory device.The whole service process of this scrambler is identical with above-mentioned scrambler 100 with principle, is not given unnecessary details herein.
Adopt scrambler provided by the invention, when user and publisher (as bank) produce objection with regard to certain transaction, whether service recorder query function inquiry transaction record (detailed process as mentioned above) at that time that can be by scrambler, the transaction record that obtains by inquiry can the employed dynamic password of this contentious transaction of judgement place be produced by user's scrambler; The dynamic password of finishing transaction by authentication in the dynamic password that inquiry is obtained and the dynamic cipher authentication system compares again, judges the dynamic password whether dynamic password of finishing transaction produces for the user cipher device.Two responsibilities of sending out during this objection of the identification that can be perfectly clear is concluded the business thus.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. a method of reviewing the scrambler service recorder is characterized in that, described method comprises the steps:
(1) scrambler according to the input the challenge response dynamic password time, the operation information of scrambler is retained in the scrambler with this moment, forms the service recorder information of this scrambler;
(2) scrambler is transferred according to input inquiry instruction and is shown the service recorder information that is stored in the scrambler.
2. a kind of method of reviewing the scrambler service recorder according to claim 1 is characterized in that, when the information bar that keeps in the described step (1) is counted exceed capacity, circulation is covered record before.
3. a kind of method of reviewing the scrambler service recorder according to claim 1, it is characterized in that, the operation information of described scrambler is that scrambler calculates the time of dynamic password and the challenge information of input according to the input challenge information, perhaps is that scrambler calculates the time of dynamic password, challenge information and the corresponding dynamic password of input according to the input challenge information.
4. a kind of method of reviewing the scrambler service recorder according to claim 1 is characterized in that, described step (2) realizes by following steps:
(22) scrambler judges whether the challenge information of input is query statement;
(23) if query statement, scrambler enters into the service recorder query State;
(24) service recorder of storage is transferred and shown to scrambler.
5. a kind of method of reviewing the scrambler service recorder according to claim 4 is characterized in that, described scrambler also has the password for inquiry authenticating step before transferring the service recorder of storage.
6. a kind of method of reviewing the scrambler service recorder according to claim 5 is characterized in that, the password for inquiry that adopts in the described password for inquiry authenticating step is fixed password or one-time pad sign indicating number.
7. a kind of method of reviewing the scrambler service recorder according to claim 6 is characterized in that, when stating password for inquiry and being fixed password, scrambler can't be according to keyboard input instruction deletion service recorder.
8. can review scrambler for one kind, it comprises the keyboard that calculating is used display screen and imported usefulness with MCU, demonstration, described MCU control connection display screen and keyboard, it is characterized in that, described scrambler also comprises for the memory cell that keeps service recorder information, described memory cell and MCU data are joined, and time and challenge information when store M CU calculates dynamic password are as the service recorder information of scrambler; The service recorder information in the memory cell is transferred in the instruction that described MCU imports according to keyboard, and shows by display screen.
9. a kind of scrambler of reviewing according to claim 8 is characterized in that, described memory cell is the memory that is placed on the MCU outside.
10. a kind of scrambler of reviewing according to claim 8 is characterized in that, described memory cell is the RAM of MCU inside.
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| CN201310207788.9A CN103338109B (en) | 2013-05-29 | 2013-05-29 | A kind of scrambler of reviewing uses the method for record and can review scrambler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103530936A (en) * | 2013-10-08 | 2014-01-22 | 上海众人网络安全技术有限公司 | Electronic cipherer and transaction historical record retention query method of electronic cipherer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2610419Y (en) * | 2003-02-18 | 2004-04-07 | 深圳市兆日信息技术有限公司 | Single screen display structure of payment cipher apparatus |
| CN101227284A (en) * | 2008-01-29 | 2008-07-23 | 北京飞天诚信科技有限公司 | Method for searching dynamic password and dynamic token with searching function |
| CN102638465A (en) * | 2012-03-29 | 2012-08-15 | 上海动联信息技术有限公司 | Challenge-response dynamic password generating method for preventing phishing attack |
| CN103020695A (en) * | 2012-12-28 | 2013-04-03 | 北京大唐智能卡技术有限公司 | Financial IC (integrated circuit) card and implementation method thereof |
| CN103051618A (en) * | 2012-12-19 | 2013-04-17 | 北京江南天安科技有限公司 | Terminal authentication equipment and network authentication method |
-
2013
- 2013-05-29 CN CN201310207788.9A patent/CN103338109B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2610419Y (en) * | 2003-02-18 | 2004-04-07 | 深圳市兆日信息技术有限公司 | Single screen display structure of payment cipher apparatus |
| CN101227284A (en) * | 2008-01-29 | 2008-07-23 | 北京飞天诚信科技有限公司 | Method for searching dynamic password and dynamic token with searching function |
| CN102638465A (en) * | 2012-03-29 | 2012-08-15 | 上海动联信息技术有限公司 | Challenge-response dynamic password generating method for preventing phishing attack |
| CN103051618A (en) * | 2012-12-19 | 2013-04-17 | 北京江南天安科技有限公司 | Terminal authentication equipment and network authentication method |
| CN103020695A (en) * | 2012-12-28 | 2013-04-03 | 北京大唐智能卡技术有限公司 | Financial IC (integrated circuit) card and implementation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103530936A (en) * | 2013-10-08 | 2014-01-22 | 上海众人网络安全技术有限公司 | Electronic cipherer and transaction historical record retention query method of electronic cipherer |
| CN103530936B (en) * | 2013-10-08 | 2015-08-19 | 上海众人网络安全技术有限公司 | Querying method preserved in a kind of electronic cipher device and transactions history record thereof |
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| CN103338109B (en) | 2016-12-28 |
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Address after: 201203 Shanghai City Chenhui Road, Zhangjiang High Tech Park of Pudong New Area No. 88 Building No. 2 room 2401 Applicant after: DynamiCode Company Limited Address before: 201203 Shanghai City Chenhui Road, Zhangjiang High Tech Park of Pudong New Area No. 88 Building No. 2 room 2401 Applicant before: DynamiCode Company Limited |
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