CN110909519A

CN110909519A - Bill dynamic code generation method based on time limitation

Info

Publication number: CN110909519A
Application number: CN201911126862.8A
Authority: CN
Inventors: 刘世民
Original assignee: Hunan Yilu Changhang Internet Technology Co Ltd
Current assignee: Hunan Yilu Changhang Internet Technology Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-03-24
Anticipated expiration: 2039-11-18
Also published as: CN110909519B

Abstract

The invention relates to the field of information security, and provides a bill dynamic code generation method based on time limitation. The server generates a serial number as a plain code, a secret code obtained by an ASC encryption algorithm and dynamic codes corresponding to different time periods for the bill making. The time period comprises a plurality of invalid time periods and valid time periods, and only the dynamic codes of the valid time periods are delivered to the ticket holder. The invention solves the problems that the cipher device for the dynamic cipher has high cost, the generation process is unsafe and the dynamic cipher checking process is not suitable for manual operation.

Description

Bill dynamic code generation method based on time limitation

Technical Field

The invention relates to the field of information security, in particular to a bill dynamic code generation method based on time limitation.

Background

The bill is widely used in various industries as a transaction certificate, and generating a specific serial number and a password for the bill is a general technical means for verifying the authenticity and effectiveness of the bill. Many places need to be verified to enter nowadays, such as a large concert site, a sports competition site, a large evening site, a banquet site and the like, and tickets also play an important role in transportation industries such as passenger transport services of trains, airplanes, ships and the like. Under these scenarios, the authenticity, validity, and timeliness of the document are particularly important. Compared with the traditional matching of the solid serial number and the password, the prior art develops the technical scheme of using the dynamic password to ensure that the timeliness of the bill can be verified, such as the method of using a dynamic password device.

However, the prior art dynamic password generation method using a password generator in combination with time requires the ticket holder to use equipment that is authenticated and synchronized with the ticket validation system, increasing the cost and complexity of the ticket holder's operations during the validation process. Further, since the generation of the dynamic password is completed at the client, the process cannot ensure the security. An attacker can forge a ticket by intervening in the operation of the dynamic password generator. In addition, in a scene with a large traffic of people such as a large-scale event site or a station airport, the ticket checking work mostly needs to assist the management of people flow by adopting a manual ticket checking mode. The dynamic password is usually in a complex number or letter combination form, and the process of checking the dynamic code of the bill is complex and unreasonable for manpower, so that the efficiency of checking the bill is low, and the entrance jam of a place is easily caused.

Disclosure of Invention

In view of the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a time-based dynamic code generation method for tickets, which generates dynamic codes by a server and facilitates manual verification.

A bill dynamic code generation method based on time limitation comprises the following steps:

s1, generating a unique serial number as a plain code for the current bill, and generating a secret code by the plain code through an encryption algorithm.

S2, setting a plurality of non-overlapping time periods, wherein one time period is an effective time period; different entries, the number of which is the same as the number of time periods, are randomly selected from a code library as dynamic codes, each dynamic code corresponding to a time period.

And S3, storing the serial number, the secret code, the time period and the corresponding dynamic code as an effective item in a ticket center server.

Further, the code library is Chinese characters in ANSI, GB2312 or GBK code libraries.

Further, S1 includes generating the password by an encryption algorithm in combination with the serial number and the current time, the information of the current time including year, month, day, hour, minute, and second. The valid entry in S3 also includes storing the current time.

Further, S1 includes obtaining an identification code of the ticket holder, and generating a unique identification code for the ticket holder if the ticket holder does not have the identification code. The combination of the serial number, the current time, and the ticket holder 'S identification number is then used to generate a secret code by a cryptographic algorithm, and the valid entry in S3 also includes the ticket holder' S identification number.

Further, the encryption algorithm isASCSymmetric encryption.

Further, the serial code and the secret code in the form of a machine readable code are delivered to the ticket holder as part of the contents of the ticket, and the dynamic code is delivered to the ticket holder.

Further, the dynamic code is delivered to the bill holder in the form of mobile phone short message, e-mail or push in software.

The beneficial effects brought by the invention comprise: (1) the dynamic code is generated uniformly by the bill verification server, and the bill holder does not need to use other equipment except the bill to verify the authenticity and the validity of the bill. The difficulty of use and the cost of the bill holder are greatly reduced, and the efficiency of the bill inspection process is improved. (2) Because the generation of the dynamic code is completed in the server, the safety of the dynamic code is improved. An attacker cannot intervene in the dynamic code generation process, and the bill counterfeiting difficulty is higher. (3) The dynamic code adopts a code library conforming to the habit of artificial language, and the dynamic code can be quickly read and verified whether to be correct or not during manual ticket checking, so that the ticket checking efficiency can be effectively improved. (4) The dynamic code generated according to the Chinese character code library also enables a bill holder to quickly read and provide the dynamic code to a ticket checker or a system in the forms of writing, pronunciation and the like, so that the bill can be quickly and effectively verified under different checking systems and forms.

Drawings

FIG. 1 is a flow chart of a method for generating a bill dynamic code based on time limitation.

Detailed Description

The method for generating the ticket dynamic code based on time limit of the invention will be further described in detail with reference to the drawings and specific embodiments of the specification.

Example 1

The current ticket is a ticket corresponding to a train at 10 am on 1 st of 2020, and the time period for allowing the train waiting room to be accessed is changed from 8 am on the day to 10 am. The current time is 11 am on 10/1/2019, and the identification code of the bill holder is 101. Referring to fig. 1, a serial number, a secret code and a dynamic code are generated for a current ticket according to the following steps:

step 101, generating a unique serial number as a plain code for the current bill, wherein the serial number is 10001.

Step 102, acquiring an identification code of a bill holder, adding the identification code of the bill holder and a serial number to obtain 10102, converting the 10102 into a character string, adding 201910011100 in a format of year, month and day of the current time to the tail of the character string, and finally obtaining the character string of 10102201910011100.

And step 201, generating a secret code by the character string obtained in the step 102 through an ASC encryption algorithm.

Step 301, setting a plurality of non-overlapping time periods: 6 to 8 am, 8 to 10 am, 10 to 12 am, 12 to 2 am, 2 to 4 am, 4 to 6 am, 6 to 8 am on 1 st month of 2020, wherein 8 to 10 am is the effective period. Different entries, the number of which is the same as the number of time periods, are randomly selected from a code library as dynamic codes, each dynamic code corresponding to a time period. The code library is Chinese characters in ANSI, GB2312 or GBK code libraries, and preferably, the code library range is further limited to 3500 Chinese characters in a modern Chinese common character table. The dynamic codes corresponding to different time periods are respectively as follows: one, two, three, four, five, six, seven (here only numeric Chinese characters are substituted for the randomly selected results for explanation).

Step 401, store the serial number, the secret code, the current time, the identifier of the ticket holder, the time period and the corresponding dynamic code as a valid entry in the ticket center server.

Step 501, the serial code and the password in the form of the two-dimensional code are printed on the front surface of the bill and delivered to the bill holder, and the Chinese character 'two' of the dynamic code corresponding to the effective time period is printed on the back surface of the bill.

Example 2

This embodiment is different from embodiment 1 in that the ticket holder does not have an identification code.

Step 102 differs from example 1 in that: a unique identification code 102 is generated for the ticket holder. The 10103 is obtained by adding the identification code of the bill holder and the serial number and converted into a character string, the tail of the character string is added with the current time in a year, month and day time format 201910011100, and the finally obtained character string is 10103201910011100.

Step 501 differs from example 1 in that: the serial code and the cipher code in the form of bar code are printed on the bill and delivered to the bill holder, and the Chinese character 'two' corresponding to the dynamic code in the effective time period is delivered to the bill holder in the form of mobile phone short message, e-mail or software push.

The other steps of this example are the same as example 1.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Such as: the dynamic code is set as English letters, a plurality of Chinese characters or the combination of English words, etc. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also encompasses these modifications and variations.

Claims

1. A bill dynamic code generation method based on time limitation comprises the following steps:

s1, generating a unique serial number as a plain code for a current bill, and generating a secret code by the plain code through an encryption algorithm;

s2, setting a plurality of non-overlapping time periods, wherein one time period is an effective time period; randomly selecting different items with the same number as the time periods from a code library as dynamic codes, wherein each dynamic code corresponds to one time period;

2. The method for generating the ticket dynamic code based on the time limit of claim 1, wherein: the code library is Chinese characters in ANSI, GB2312 or GBK code libraries.

3. The method for generating the ticket dynamic code based on the time limit of claim 1 or 2, wherein: the step S1 includes generating cipher code by encryption algorithm after combining the serial number and the current time; the valid entry in S3 also includes the current time.

4. The method for generating the ticket dynamic code based on the time limit of claim 3, wherein: said S1 includes acquiring the identification code of the ticket holder, and generating a unique identification code for the ticket holder if the ticket holder does not have the identification code; the combination of the serial number, the current time, and the ticket holder 'S identification number is then used to generate a secret code by a cryptographic algorithm, and the valid entry in S3 also includes the ticket holder' S identification number.

5. The method for generating the ticket dynamic code based on the time limit of claim 4, wherein: the encryption algorithm isASCSymmetric encryption.

6. The method for generating the ticket dynamic code based on the time limit of claim 5, wherein: the serial code and the secret code in the form of machine-readable code are delivered to the bill holder as a part of the bill contents, and the dynamic code corresponding to the valid time period is delivered to the bill holder.

7. The method for generating the ticket dynamic code based on the time limit of claim 6, wherein: the dynamic code is delivered to the bill holder in the form of mobile phone short message, e-mail or push in software.