CN102546174A - Two-dimensional code encryption/decryption method and anti-counterfeiting method - Google Patents
Two-dimensional code encryption/decryption method and anti-counterfeiting method Download PDFInfo
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- CN102546174A CN102546174A CN2011104309523A CN201110430952A CN102546174A CN 102546174 A CN102546174 A CN 102546174A CN 2011104309523 A CN2011104309523 A CN 2011104309523A CN 201110430952 A CN201110430952 A CN 201110430952A CN 102546174 A CN102546174 A CN 102546174A
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Abstract
The invention discloses a two-dimensional code encryption/decryption method. The method comprises the following steps that: two-dimensional code original information is obtained; an EK (electronic key) encryption key is used to perform ECC (Error Correction Code) encryption operation on the two-dimensional code original information and real-time clock information to obtain encrypted data jumped as time goes; the encrypted data is encoded to generate a new two-dimensional code figure; the two-dimensional code figure jumped as time goes is obtained; the two-dimensional code figure is decoded to obtain encrypted data jumped as time goes; and DK decryption key is used to perform ECC decryption operation on the encrypted data to obtain decryption information. The two-dimensional code encryption/decryption method performs algorithm encryption according to two-dimensional code original data, generates the two-dimensional code jumped as time goes, and ensures that the two-dimensional inquiry codes obtained by terminal users are different for each time, verification steps are decreased, and the security and the non-repeatability of the two-dimensional code are guaranteed.
Description
Technical field
The present invention relates to field of anti-counterfeit technology, the two-dimension code encrypt/decrypt anti-counterfeiting technology of a kind of saltus step specifically.
Background technology
At present, the two-dimension code anti-counterfeit technology is employed in all trades and professions more and more widely, and the information of hiding in the two-dimension code is this technological core place.
Two-dimension code (2-Dimensional bar code) is with certain specific geometric figure chequered with black and white graphic recording data symbol information that (being on the two-dimensional directional) distributes according to certain rules on the plane.On coding, utilize " 0 ", the notion of " 1 " bit stream that constitutes the computer-internal logical foundations cleverly; Use several and the corresponding geometrical body of binary system to represent the literal numerical information, handle automatically with realization information through image input device or photoelectric scanning device automatically identifying and reading.
The characteristics of two-dimension code comprise following some: 1, high density coding, information capacity is big, but 1850 capitalizations of outfit as many as or 2710 numerals or 1108 bytes, or more than 500 Chinese character, higher approximately tens times than common bar code information amount; 2, coding range is wide, and this bar code can digitized information be encoded picture, sound, literal, signature, fingerprint etc., shows with bar code; Can represent the multilingual literal; But also presentation video data; 3, fault-tolerant ability is strong, has error correction, and this makes two-dimensional bar code because of perforation, stained etc. when causing local damage, can correctly obtain recognition in the same old way, but impaired area reaches 50% recovering information still; 4, reliability of decode is high, and it is than low many of common bar code decoding error rate 2/1000000ths, and the error rate of two-dimension code is no more than 1/10000000th; 5, low, the easy making of cost, durable.
In sum, two-dimensional bar code has characteristics such as memory space is big, tracking property is high, anti-damageability is strong, redundant property is big, cost is cheap.But in the prior art, the information in the two-dimension code all is not through encryption, just can distinguish the information that comprises in the two-dimension code as long as the fake producer has corresponding two dimension code reading equipment.Simultaneously, the fake producer can fake through directly duplicating two-dimension code image.Like this, two-dimension code just can't be used under some have the occasion of security requirements and false proof requirement.
Summary of the invention
The objective of the invention is the saltus step technology to be applied in the anti-counterfeiting technology of two-dimension code, to reach fail safe and the not repeated effect that improves two-dimension code anti-counterfeit in order to overcome the shortcomings such as poor stability that prior art exists.
To achieve these goals, the present invention provides a kind of two-dimension code encryption method, may further comprise the steps:
Obtain two-dimension code raw information;
With this two-dimension code raw information and real-time clock information, carry out the ECC cryptographic calculation with the EK encryption key, obtain the enciphered data of a saltus step in time;
This enciphered data is encoded, generate new two-dimension code figure.
Wherein, this two-dimension code raw information is that former two-dimension code figure is carried out decoded data message.
Wherein, two-dimension code raw information is encrypted and the operation of encoding can be carried out on like electronic equipments such as computer, mobile phones, and the two-dimension code graphical display after will encoding through display screen is come out.
Wherein, this encryption method also comprises, after 0-10 minute, repeats above-mentioned steps.
The present invention also provides a kind of and above-mentioned two-dimension code encryption method corresponding decryption method, may further comprise the steps:
Obtain the two-dimension code figure of saltus step in time;
This two-dimension code figure is decoded, obtain the enciphered data of saltus step in time;
To this enciphered data, carry out the ECC decrypt operation with the DK decruption key, obtain decryption information.
Wherein, this decryption information is exactly the two-dimension code raw information before encrypting.
Wherein, obtain and the decode two dimensional codes figure be special equipment with recognition function, as be equipped with the also smart mobile phone etc. of built-in recognition software of camera.
The present invention also provides a kind of method for anti-counterfeit based on two-dimension code, may further comprise the steps:
First terminal obtains two-dimension code raw information;
With this two-dimension code raw information and real-time clock information, carry out the ECC cryptographic calculation with the EK encryption key, obtain the enciphered data of a saltus step in time;
This enciphered data is encoded, generate new two-dimension code figure;
Second terminal obtains the two-dimension code figure of saltus step in time;
This two-dimension code figure is decoded, obtain the enciphered data of saltus step in time;
To this enciphered data, carry out the ECC decrypt operation with the DK decruption key, obtain decryption information;
Whether contrast this decryption information consistent with above-mentioned two-dimension code raw information;
If consistent, then be judged as very, through fake certification;
If inconsistent, then be judged as vacation, the fake certification failure.
Wherein, said first terminal is a computer, and said second terminal is a mobile phone.
The present invention can carry out algorithm for encryption according to the two-dimension code initial data that the user provides, and generates the two-dimension code of saltus step in time, and the two-dimentional inquiry code that makes the terminal use obtain each time all is different.Therefore; Even the invador has listened to the two-dimension code of this saltus step, also can't submit to identical two-dimension code through fake certification once more, and also can't calculate secret key decryption through the two-dimension code data message that listens to; So also just can't forge log-on message; Thereby improved anti-counterfeiting performance greatly, when reducing verification step, effectively guaranteed the fail safe of two-dimension code and not repeated.
Description of drawings
Understand the object of the invention, characteristics and advantage for more knowing, below will combine accompanying drawing that preferred embodiment of the present invention is described in detail, wherein:
Fig. 1 is the schematic flow sheet of two-dimension code encryption method of the present invention;
Fig. 2 is the schematic flow sheet of two-dimension code decryption method of the present invention; And
Fig. 3 is the schematic flow sheet of two-dimension code anti-counterfeit method of the present invention.
Embodiment
See also Fig. 1, the encryption method of two-dimension code comprises:
Step S101, computer obtain the two-dimension code original figure, and the decoding back obtains the two-dimension code primary data information (pdi);
Step S102, computer carries out the ECC cryptographic calculation through the real-time clock information of encryption software with this two-dimension code raw information and the generation of its clock module with the EK encryption key, obtains the enciphered data of a saltus step in time;
Step S103, computer is encoded this enciphered data through encoding software, generates new two-dimension code figure, and is presented on the display screen;
Step S104, after 30 seconds, repeating step S102 is to step S103.
See also Fig. 2, the corresponding decryption method of two-dimension code encryption method among Fig. 1 comprises:
Step S201, mobile phone obtain the two-dimension code figure of saltus step in time through camera;
Step S202, mobile phone is decoded this two-dimension code figure through recognition software, obtains the enciphered data of saltus step in time;
Step S203, mobile phone to this enciphered data, carries out ECC decrypt operation with the DK decruption key through decryption software, obtains decryption information.
See also Fig. 3, the method for anti-counterfeit based on two-dimension code comprises:
Step S301, computer obtain the two-dimension code original figure, and the decoding back obtains the two-dimension code primary data information (pdi);
Step S302, computer carries out the ECC cryptographic calculation through the real-time clock information of encryption software with this two-dimension code raw information and the generation of its clock module with the EK encryption key, obtains the enciphered data of a saltus step in time;
Step S303, computer is encoded this enciphered data through encoding software, generates new two-dimension code figure, and is presented on the display screen;
Step S304, mobile phone obtain the two-dimension code figure of saltus step in time through camera;
Step S305, mobile phone is decoded this two-dimension code figure through recognition software, obtains the enciphered data of saltus step in time;
Step S306, mobile phone to this enciphered data, carries out ECC decrypt operation with the DK decruption key through decryption software, obtains decryption information;
Step S307, whether this decryption information of mobile phone contrast is consistent with two-dimension code raw information;
If step S308 consistent, then is judged as very, through fake certification;
If step S309 inconsistent, then is judged as vacation, the fake certification failure.
Claims (5)
1. two-dimension code encryption method is characterized in that it comprises:
Obtain two-dimension code raw information;
With this two-dimension code raw information and real-time clock information, carry out the ECC cryptographic calculation with the EK encryption key, obtain the enciphered data of a saltus step in time;
This enciphered data is encoded, generate new two-dimension code figure.
2. two-dimension code encryption method according to claim 1 is characterized in that: also comprise, after 0-10 minute, repeat above-mentioned steps.
One kind with claim 1 or the corresponding two-dimension code decryption method of 2 said two-dimension code encryption methods, it is characterized in that it comprises:
Obtain the two-dimension code figure of saltus step in time;
This two-dimension code figure is decoded, obtain the enciphered data of saltus step in time;
To this enciphered data, carry out the ECC decrypt operation with the DK decruption key, obtain decryption information.
4. method for anti-counterfeit based on two-dimension code is characterized in that it comprises:
First terminal obtains two-dimension code raw information;
With this two-dimension code raw information and real-time clock information, carry out the ECC cryptographic calculation with the EK encryption key, obtain the enciphered data of a saltus step in time;
This enciphered data is encoded, generate new two-dimension code figure;
Second terminal obtains the two-dimension code figure of saltus step in time;
This two-dimension code figure is decoded, obtain the enciphered data of saltus step in time;
To this enciphered data, carry out the ECC decrypt operation with the DK decruption key, obtain decryption information;
Whether contrast this decryption information consistent with above-mentioned two-dimension code raw information;
If consistent, then be judged as very, through fake certification;
If inconsistent, then be judged as vacation, the fake certification failure.
5. two-dimension code anti-counterfeit method according to claim 4 is characterized in that: said first terminal is a computer, and said second terminal is a mobile phone.
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| CN105426765A (en) * | 2015-07-09 | 2016-03-23 | 深圳百云信息技术有限公司 | Two-dimensional code dynamic encryption and decryption algorithm |
| WO2017045594A1 (en) * | 2015-09-17 | 2017-03-23 | 深圳三元色数码科技有限公司 | Anti-counterfeit method |
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Application publication date: 20120704 |