WO2019095170A1

WO2019095170A1 - Two-dimensional code generation method, two-dimensional code decoding method, and terminal

Info

Publication number: WO2019095170A1
Application number: PCT/CN2017/111211
Authority: WO
Inventors: 谢宁; 陈昌盛; 谭杰
Original assignee: 深圳大学
Priority date: 2017-11-15
Filing date: 2017-11-15
Publication date: 2019-05-23

Abstract

Disclosed are a two-dimensional code generation method, a two-dimensional code decoding method, and a terminal. The method comprises: encoding original information by using a first encoding mode to obtain encoded original information; encoding authentication information by using a second encoding mode to obtain encoded authentication information, wherein the first encoding mode is different from the second encoding mode; embedding the encoded authentication information into the encoded original information to obtain target encoded information; modulating the target encoded information to obtain a target bit stream; and converting the target bit stream into a two-dimensional code image according to a pre-set two-dimensional code generation algorithm. The implementation of the embodiments of the present invention can improve the security of a two-dimensional code.

Description

Two-dimensional code generation method, two-dimensional code decoding method and terminal

Technical field

The present invention relates to the field of information technology, and in particular, to a two-dimensional code generation method, a two-dimensional code decoding method, and a terminal.

Background technique

The two-dimensional code records the data symbol information in a black and white pattern distributed in a plane by a certain geometry according to a certain rule. Traditional QR codes are easily copied by illegal users after they are printed. For example, the two-dimensional code on the product carries the genuine or genuine verification information of the commodity information and the commodity, and if the illegal user scans and prints the two-dimensional code of the commodity and prints it on the counterfeit and shoddy commodity, the user scans the fake and shoddy commodity. The QR code also does not recognize whether the item is genuine. It can be seen that the security of the current two-dimensional code is easily scanned and copied, and the security of the two-dimensional code is low.

Summary of the invention

The embodiment of the invention discloses a two-dimensional code generation method, a two-dimensional code decoding method and a terminal, which can improve the security of the two-dimensional code.

A first aspect of the embodiment of the present invention discloses a method for generating a two-dimensional code, comprising: preparing original information and authentication information different from the original information, wherein a capacity of the authentication information is smaller than a predetermined ratio of a capacity of the original information; Embedding the authentication information in the original information to obtain target information; modulating the target information to obtain a target bitstream; and converting the target bitstream into a two-dimensional code image according to a preset generation algorithm.

A second aspect of the embodiments of the present invention discloses a two-dimensional code decoding method, including: capturing a two-dimensional code image, performing image restoration on the two-dimensional code image, and obtaining a restored two-dimensional code image; according to a preset bit stream Generating an algorithm to convert the restored two-dimensional code image into a target bit stream; demodulating the target bit stream to obtain target encoding information; and extracting an encoded original letter from the target encoding information And decoding the original information by using a first decoding manner to obtain original information; extracting the encoded authentication information from the target encoded information, and decoding the encoded authentication information by using a second decoding manner to obtain the authentication information.

A third aspect of the embodiments of the present invention discloses a terminal, including: a first coding unit, configured to encode original information by using a first coding manner, to obtain coded original information; and a second coding unit, configured to use a second coding mode The authentication information is encoded to obtain the encoded authentication information, where the first encoding mode is different from the second encoding mode, and the embedding unit is configured to embed the encoding authentication information into the encoding original information to obtain target encoding information. a modulating unit, configured to modulate the target encoding information to obtain a target bit stream, and a converting unit, configured to convert the target bit stream into a two-dimensional code according to a preset two-dimensional code generating algorithm.

A fourth aspect of the present invention discloses a terminal, including: a scan recovery unit, configured to scan a two-dimensional code image, perform image restoration on the two-dimensional code image, and obtain a restored two-dimensional code image; Converting the restored two-dimensional code image into a target bit stream according to a preset bit stream generation algorithm; and demodulating means for demodulating the target bit stream to obtain target coded information; the first decoding unit For extracting the original information from the target encoding information, decoding the original encoding information by using a first decoding manner to obtain original information, and second decoding unit, configured to extract encoding authentication from the target encoding information. The information is decoded by using the second decoding method to obtain the authentication information.

A fifth aspect of the embodiments of the present invention discloses a method for generating a two-dimensional code, comprising: encoding an original information by using a first encoding manner to obtain encoded original information; and encoding the authentication information by using a second encoding manner to obtain encoded authentication information, The first encoding mode is different from the second encoding mode; the encoding authentication information is embedded in the encoding original information to obtain target encoding information; and the target encoding information is modulated to obtain a target bitstream; The authentication bit stream is embedded in the original bit stream to obtain a target bit stream; and the target bit stream is converted into a two-dimensional code image according to a preset two-dimensional code generation algorithm.

In the embodiment of the present invention, the original information is encoded by using the first coding manner to obtain a coding original. The first information is used to encode the authentication information to obtain the encoded authentication information; the encoded authentication information is embedded in the encoded original information to obtain the target encoded information; and the target encoded information is modulated to obtain a target bit stream; The two-dimensional code generation algorithm converts the target bit stream into a two-dimensional code image. Since the coded authentication information is embedded in the coded original information, the two-dimensional code image carries the authentication information. When the two-dimensional code image is scanned and copied, more noise is introduced, so that the copied two-dimensional code image cannot be used, so implementation In the embodiment of the present invention, the two-dimensional code can be prevented from being illegally copied, and the security of the two-dimensional code is improved.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a schematic flow chart of a method for generating a two-dimensional code according to an embodiment of the present invention;

2 is a schematic flow chart of another method for generating a two-dimensional code according to an embodiment of the present invention;

3 is a schematic flow chart of a method for decoding a two-dimensional code according to an embodiment of the present invention;

4 is a schematic flowchart of a two-dimensional code decoding method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

6 is a schematic structural diagram of another terminal according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of still another terminal according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art have not made All other embodiments obtained under the premise of creative labor are within the scope of the invention.

Embodiments of the present invention disclose a two-dimensional code generation method, a two-dimensional code decoding method, and a terminal, which can improve the security of a two-dimensional code. The details are described below separately.

Referring to FIG. 1, FIG. 1 is a schematic flowchart diagram of a method for generating a two-dimensional code according to an embodiment of the present invention. As shown in FIG. 1, the two-dimensional code generation method includes the following steps.

Step 101: The terminal encodes the original information by using a first coding manner to obtain coded original information.

In the embodiment of the present invention, the original information may be information input by the user, for example, a character string, a web address, or the like. The first coding mode may be Reed-Solomon (RS) coding, which is a forward error correction channel coding, which is valid for polynomials generated by correcting oversampled data. The RS code has strong anti-interference and anti-noise ability and has strong error correction capability. After the receiving device receives most of the encoded original information, the original information can be decoded using the RS decoding method. After the original information is RS-encoded, the obtained encoded original information may be a binary bit stream composed of "0" and "1".

Step 102: The terminal encodes the authentication information by using the second coding mode to obtain the coded authentication information, where the first coding mode is different from the second coding mode.

In the embodiment of the present invention, the second coding mode may be BCH (Bose, Ray-Chaudhuri Hocquenghem) coding, and the BCH coding is multi-level, cyclic, error correction, variable length digital coding for correcting multiple random error modes. BCH coding can also be used for multi-level phase shift keying at the power level or prime level. Compared with RS coding, the anti-interference and anti-noise ability of BCH coding is weaker, and the error correction capability of BCH coding is worse than that of RS coding. When BCH is decoded, when the number of occurrences of the error exceeds the preset number of bits, the decoding fails and the authentication information cannot be decoded. After the BCH encoding of the authentication information, the obtained encoding authentication information may be a binary bit stream composed of "0" and "1". The authentication information may be a character string, a binary bit stream, or the like, and the authentication information may be used to authenticate the authenticity of the two-dimensional code. For example, the authentication information may be anti-counterfeiting verification information in a two-dimensional code on the commodity.

In general, the capacity of the authentication information is smaller than the error correction capacity of the two-dimensional code. The error correction capacity of the two-dimensional code is related to the coding mode of the two-dimensional code. For example, for QS, the error correction capacity can reach 30% of the original information capacity. In some examples, optionally, the capacity of the authentication information is less than 30% of the capacity of the original information.

In the embodiment of the present invention, when the capacity of the authentication information is less than 30% of the capacity of the original information, in the scanned two-dimensional code image, the authentication information has little influence on the original information, and is within the automatic error correction range of the two-dimensional code. There is no case where the original information cannot be read from the QR code. When the capacity of the authentication information is greater than 30% of the capacity of the original information, the authentication information has a greater impact on the original information, which is beyond the automatic error correction range of the two-dimensional code, and may not be able to read the original information from the two-dimensional code. Happening.

In a feasible implementation manner, the authentication information may not need to be encoded. When the authentication information itself is a binary bit stream composed of “0” and “1”, no encoding is needed. At this time, the second encoding method is to change "0" in the authentication information to "0", and "1" to "1", that is, equivalent to no encoding.

It should be noted that the execution order of step 101 and step 102 in the embodiment of the present invention may be reversed.

Steps

101 and 102 can also be performed simultaneously.

Step 103: The terminal embeds the encoded authentication information into the encoded original information to obtain target encoding information.

In the embodiment of the present invention, the terminal may embed the coded authentication information into the code original information. Both the encoded authentication information and the encoded original information are binary bit streams. In general, the encoded authentication information is much smaller than the encoded original information, for example, the encoded authentication information is less than 30% of the encoded original information. For example, the encoding authentication information is 100 bits, the encoding original information is 1000 bits, and the size of the finally obtained target encoding information is between 1000 and 1100 bits.

In a feasible implementation manner, the terminal randomly embeds the coding authentication information into the original information to obtain the target coding information.

In the embodiment of the present invention, the terminal may insert the coded authentication information into the coded original information according to an embedded policy. For example, the terminal may randomly insert each bit in the encoded authentication information into the encoded original information to obtain target encoded information. For another example, the terminal may randomly insert the entire encoded authentication information into the encoded original information. If the encoding authentication information is 100 bits, the encoding original information is 1000. The size of the resulting target encoded information is 1100 bits.

In another feasible implementation manner, the terminal replaces part of the information in the original information with the coded authentication information to obtain target coded information.

In the embodiment of the present invention, the terminal may select a bit number equal to the size of the coded authentication information in the original code information, and replace the selected bit number with the coded authentication information to obtain the target coded information. For example, if the encoding authentication information is 100 bits and the encoding original information is 1000 bits, the terminal can select 100 bits from the encoding original information, and replace the 100 bits with the encoding authentication information to obtain 1000-bit target encoding information.

Step 104: The terminal modulates the target coding information to obtain a target bit stream.

In the embodiment of the present invention, the terminal may modulate the target coding information by using a Quadrature Amplitude Modulation modulation method to obtain a target bit stream. For QAM modulation, the target bit stream may be a bit stream consisting of "0", "1", "-1". After modulating the target coded information, a target bit stream suitable for channel transmission is obtained, so that the target bit stream is transmitted in the channel.

Step 105: The terminal converts the target bit stream into a two-dimensional code image according to a preset two-dimensional code generation algorithm.

In the embodiment of the present invention, the terminal modulates the target coding information to obtain a target bit stream, and then converts the target bit stream into a two-dimensional code image according to a preset two-dimensional code generation algorithm. Specifically, the terminal may respectively correspond to “0”, “1”, “-1” in the target bitstream to different grayscale image pixels, and according to “0”, “1”, “-1” in the target bitstream. The position in the target bitstream corresponds to the pixel location in the two-dimensional code image.

In the embodiment of the present invention, the two-dimensional code image carries the authentication information. Since the authentication information is small, when the two-dimensional code image is scanned and copied, the noise generated by the authentication information is relatively large, resulting in the copied two-dimensional code image. The authentication information is easily lost, and the copied two-dimensional code image cannot be used. Therefore, the embodiment of the present invention can prevent the two-dimensional code from being illegally copied and improve the security of the use of the two-dimensional code.

Referring to FIG. 2, FIG. 2 is a schematic flowchart diagram of another method for generating a two-dimensional code according to an embodiment of the present invention. As shown in FIG. 2, the two-dimensional code generating method includes the following steps.

Step 201: The terminal encodes the original information by using a first coding manner to obtain coded original information.

In the embodiment of the present invention, the original information may be information input by the user, for example, a character string, a web address, or the like. The first coding mode may be RS coding, which is a forward error correction channel coding, which is valid for a polynomial generated by correcting oversampled data. The RS code has strong anti-interference and anti-noise ability and has strong error correction capability. After the receiving device receives most of the encoded original information, the original information can be decoded using the RS decoding method. After the original information is RS-encoded, the obtained encoded original information may be a binary bit stream composed of "0" and "1".

Step 202: The terminal modulates the original information to obtain an original bit stream.

In the embodiment of the present invention, the terminal may modulate the original information by using a Quadrature Amplitude Modulation modulation method to obtain an original bit stream. For QAM modulation, the original bit stream may be a bit stream consisting of "0", "1", "-1". After modulating the original information, a raw bit stream suitable for channel transmission is obtained so that the original bit stream is transmitted in the channel.

Step 203: The terminal encodes the authentication information by using the second coding mode to obtain the coded authentication information, where the first coding mode is different from the second coding mode.

In the embodiment of the present invention, the second coding mode may be BCH (Bose, Ray-Chaudhuri Hocquenghem) coding, and the BCH coding is multi-level, cyclic, error correction, variable length digital coding for correcting multiple random error modes. BCH coding can also be used for multi-level phase shift keying at the power level or prime level. Compared with RS coding, the anti-interference and anti-noise ability of BCH coding is weaker, and the error correction capability of BCH coding is worse than that of RS coding. When BCH is decoded, when the number of occurrences of the error exceeds the preset number of bits, the decoding fails and the authentication information cannot be decoded. After the BCH encoding of the authentication information, the obtained encoded original information may be a binary ratio consisting of “0” and “1”. Special flow.

Step 204: The terminal modulates the encoded authentication information to obtain an authentication bitstream.

In the embodiment of the present invention, the terminal may modulate the encoded authentication information by using a Quadrature Phase Shift Keying (QPSK) modulation method to obtain an authentication bit stream. For QPSK modulation, the authentication bitstream may be a bitstream consisting of "0", "1", "-1". After modulating the encoded authentication information, an authentication bitstream suitable for channel transmission is obtained to authenticate the bitstream for transmission in the channel.

It should be noted that, in the embodiment of the present invention, the execution order of step 201, step 202, and step 203 and step 204 may be reversed. For example, step 203 and step 204 may be performed first, and then step 201 and step 202 may be performed. Alternatively, step 201 and step 202 are performed simultaneously with

steps

203 and 204.

Step 205: The terminal embeds the authentication bit stream into the original bit stream to obtain a target bit stream.

In the embodiment of the present invention, the terminal may embed the authentication bit stream into the original bit stream. Both the authentication bit stream and the original bit stream are binary bit streams. In general, the authentication bit stream is much smaller than the original The bitstream, for example, the authentication bitstream is less than 30% of the original bitstream. For example, the authentication bit stream is 100 bits, the original bit stream is 1000 bits, and the resulting target bit stream has a size between 1000 and 1100 bits.

In a feasible implementation manner, the terminal randomly embeds the authentication bit stream into the original bit stream to obtain a target bit stream.

In the embodiment of the present invention, the terminal may randomly insert the authentication bit stream into the original bit stream. For example, the terminal can randomly insert each bit in the authentication bitstream into the original bitstream to obtain a target bitstream. As another example, the terminal can randomly insert the authentication bit stream into the original bit stream as a whole. If the authentication bit stream is 100 bits and the original bit stream is 1000 bits, the resulting target bit stream has a size of 1100 bits.

In another possible implementation manner, the terminal replaces part of the information in the original bitstream with the authentication bitstream to obtain a target bitstream.

In the embodiment of the present invention, the terminal may select a bit number equal to the size of the authentication bit stream in the original bit stream, and replace the selected bit number with the authentication bit stream to obtain a target bit stream. For example, if the authentication bit stream is 100 bits and the original bit stream is 1000 bits, the terminal can select 100 bits from the original bit stream, and replace the 100 bits with the authentication bit stream to obtain a 1000 bit target bit stream.

Step 206: The terminal converts the target bit stream into a two-dimensional code image according to a preset two-dimensional code generation algorithm.

In the embodiment of the present invention, the terminal embeds the authentication bit stream into the original bit stream, and after obtaining the target bit stream, the target bit stream may be converted into the two-dimensional code image according to a preset two-dimensional code generation algorithm. Specifically, the terminal may respectively correspond to “0”, “1”, “-1” in the target bitstream to different grayscale image pixels, and according to “0”, “1”, “-1” in the target bitstream. The position in the target bitstream corresponds to the pixel location in the two-dimensional code image.

In the embodiment of the present invention, the two-dimensional code image carries the authentication information. Since the authentication information is small, when the two-dimensional code image is scanned and copied, the noise generated by the authentication information is relatively large, resulting in duplicated two. The authentication information in the code image is easily lost, and the copied two-dimensional code image cannot be used. Therefore, the embodiment of the present invention can prevent the two-dimensional code from being illegally copied and improve the security of the use of the two-dimensional code.

Referring to FIG. 3, FIG. 3 is a schematic flowchart diagram of a two-dimensional code decoding method according to an embodiment of the present invention. The two-dimensional code decoding method shown in FIG. 3 corresponds to the two-dimensional code generating method shown in FIG. 1. As shown in FIG. 3, the two-dimensional code decoding method includes the following steps.

Step 301: The terminal scans the two-dimensional code image, and performs image recovery on the two-dimensional code image to obtain a restored two-dimensional code image.

In the embodiment of the present invention, the terminal scans the two-dimensional code image, performs image recovery on the two-dimensional code image, and obtains the restored two-dimensional code image. At this time, a small amount of noise appears in the restored two-dimensional code image compared to the (initial) two-dimensional code image. For example, the information carried by the two-dimensional code image itself is P, and the information carried by the restored two-dimensional code image is P+P1, wherein P1 is the noise that occurs when the terminal scans the two-dimensional code image, and P1 is relative to P. Smaller, P1 is smaller than the maximum noise T allowed by the two-dimensional code in the range of fault tolerance (T is related to the size of P, generally, the larger P is, the larger T is), that is, P1 < T. In general, the noise caused by P1 is not enough to affect the information P carried by the two-dimensional code image itself. Since the two-dimensional code itself has a certain fault tolerance, the terminal can still scan from the restored two-dimensional code image to obtain the need. Information (original information and authentication information).

Step 302: The terminal converts the restored two-dimensional code image into a target bit stream according to a preset bit stream generation algorithm.

In the embodiment of the present invention, the terminal scans the two-dimensional code image, performs image recovery on the two-dimensional code image, and obtains the restored two-dimensional code image, and then converts the restored two-dimensional code image according to a preset bit stream generation algorithm. For the target bit stream. Specifically, the terminal may correspond the gray values of the pixels at different positions in the restored two-dimensional code image to different bits, and obtain a target bit stream composed of “0”, “1” “-1”.

Step 303: The terminal demodulates the target bit stream to obtain target coding information.

In the embodiment of the present invention, the terminal can adopt quadrature phase shift keying (Quadrature Phase Shift) The Keying, QPSK) modulation method demodulates the target bit stream to obtain the coded information. For QPSK modulation, a bit stream composed of "0", "1", "-1" in the target bit stream can be demodulated into target coded information of a binary bit stream composed of "0" and "1".

Step 304: The terminal extracts the original encoding information from the target encoding information, and decodes the encoded original information by using the first decoding manner to obtain the original information.

In the embodiment of the present invention, the terminal may extract the original encoding information from the target encoding information, and decode the encoded original information by using the first decoding manner to obtain the original information. Since the original information is encoded by the first encoding method in the process of generating the two-dimensional code image, the encoded original information is obtained. In the process of decoding the two-dimensional code, the first decoding mode corresponds to the first encoding mode. For example, if the first coding mode is RS coding, the first decoding mode is RS decoding. After the original information is decoded by the first decoding method, the original information can be obtained, and the original information can be information input by the user, for example, a character string, a web address, and the like.

Step 305: The terminal extracts the encoded authentication information from the target encoding information, and decodes the encoded authentication information by using the second decoding manner to obtain the authentication information.

In the embodiment of the present invention, the terminal may extract the encoded authentication information from the target encoding information, and decode the encoded authentication information by using the second decoding manner to obtain the authentication information. Since the authentication information is encoded by the second encoding method in the process of generating the two-dimensional code image, the encoded authentication information is obtained. In the process of decoding the two-dimensional code, the second decoding mode corresponds to the second encoding mode. For example, if the second coding mode is BCH coding, the second decoding mode is BCH decoding. The authentication information may be a character string, a binary bit stream, or the like, and the authentication information may be used to authenticate the authenticity of the two-dimensional code. For example, the authentication information may be anti-counterfeiting verification information in a two-dimensional code on the commodity.

Step 306: The terminal sends the authentication information to the authentication platform for authentication.

In the embodiment of the present invention, after obtaining the authentication information, the terminal may send the authentication information to the authentication platform for authentication. For example, the user can obtain the authentication information by scanning the two-dimensional code on the product, and send it to the authentication platform to verify the authenticity of the product.

The beneficial effects of the embodiments of the present invention are described below in a specific application scenario.

In a specific application scenario, QR code images can be printed on a variety of products. The user can scan the two-dimensional code image on the commodity (for example, on the outer packaging of the commodity) through the terminal, and the noise P1 appearing in the process of scanning the two-dimensional code image by the terminal, but P1 is smaller than the maximum allowed in the range of the fault tolerance capability of the two-dimensional code. Noise T, ie P1 < T. Therefore, the terminal can acquire the original information (for example, the website of the company producing the product, the origin of the product, the product logistics information, the product material information, the product manufacturing date, and the like) and the authentication information (for example, the product) included in the two-dimensional code image. Security code). If the QR code image is stolen by illegal molecules (for example, illegal copying), and the QR code image on the genuine product is illegally scanned and printed and printed on the outer packaging of the counterfeit and shoddy goods, the QR code image is illegally scanned and copied. During the process, noise P2 will appear, and P2 is much larger than P1. When the user scans the illegally copied two-dimensional code image on the outer package of the counterfeit and shoddy goods through the terminal, the terminal will appear in the process of scanning the illegally copied two-dimensional code image. The noise P3, P3 and P1 are about the same size. At this time, the noise of the QR code image becomes P2+P3, which will cause P2+P3>T, which has exceeded the maximum noise T allowed by the QR code in the fault tolerance range. The user cannot obtain the correct authentication information by scanning the illegally copied two-dimensional code image on the outer package of the counterfeit and shoddy goods, so that the authentication information in the illegally copied two-dimensional code image acquired by the user is easily mistaken or lost, resulting in illegality. The authentication information in the copied QR code image cannot be authenticated, thereby preventing the two-dimensional code from being illegally copied, and the use of the two-dimensional code can be improved. safety.

In the embodiment of the present invention, when the terminal scans the illegally copied two-dimensional code image, the authentication information in the illegally copied two-dimensional code image is prone to error or loss, and the authentication information in the illegally copied two-dimensional code image cannot pass. The purpose of authentication is to prevent the two-dimensional code from being illegally copied, and the security of the use of the two-dimensional code can be improved.

Referring to FIG. 4, FIG. 4 is a schematic flowchart diagram of a two-dimensional code decoding method according to an embodiment of the present invention. The two-dimensional code decoding method shown in FIG. 4 corresponds to the two-dimensional code generating method shown in FIG. 2. As shown in FIG. 4, the two-dimensional code decoding method includes the following steps.

Step 401: The terminal scans the two-dimensional code image, and performs image recovery on the two-dimensional code image to obtain a restored two-dimensional code image.

Step 402: The terminal converts the restored two-dimensional code image into a target bit stream according to a preset bit stream generation algorithm.

In step 403, the terminal extracts the original bit stream and the authentication bit stream from the target bit stream.

Step 404: The terminal demodulates the original bit stream to obtain encoded original information, and decodes the original information by using the first decoding manner to obtain original information.

In the embodiment of the present invention, the terminal may demodulate the original bit stream to obtain the original information, and decode the original information by using the first decoding manner to obtain original information. Since the original information is encoded by the first encoding method in the process of generating the two-dimensional code image, the encoded original information is obtained. In the process of decoding the two-dimensional code, the first decoding mode corresponds to the first encoding mode. For example, if the first coding mode is RS coding, the first decoding mode is RS decoding. After the original information is decoded by the first decoding method, the original information can be obtained, and the original information can be information input by the user, for example, a character string, a web address, and the like.

Step 405: The terminal demodulates the authentication bit stream to obtain coded authentication information, and decodes the coded authentication information by using a second decoding mode to obtain authentication information.

In the embodiment of the present invention, the terminal may demodulate the authentication bitstream to obtain the encoded authentication information, and decode the encoded authentication information by using the second decoding manner to obtain the authentication information. Since the authentication information is encoded by the second encoding method in the process of generating the two-dimensional code image, the encoded authentication information is obtained. In the process of decoding the two-dimensional code, the second decoding mode corresponds to the second encoding mode. For example, if the second coding mode is BCH coding, the second decoding mode is BCH decoding. The authentication information may be a character string, a binary bit stream, or the like, and the authentication information may be used to authenticate the authenticity of the two-dimensional code. For example, the authentication information may be anti-counterfeiting verification information in a two-dimensional code on the commodity.

Step 406: The terminal sends the authentication information to the authentication platform for authentication.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 5, the terminal includes a first encoding unit 501, a second encoding unit 502, an embedding unit 503, a modulating unit 504, and a converting unit 505, wherein: a first encoding unit 501 is configured to use the first encoding method to The information is encoded to obtain the encoded original information.

The second encoding unit 502 is configured to encode the authentication information by using the second encoding method to obtain the encoded authentication information, where the first encoding mode is different from the second encoding mode.

The embedding unit 503 is configured to embed the encoding authentication information into the encoding original information to obtain the target encoding information.

The modulating unit 504 is configured to modulate the target coding information to obtain a target bit stream.

The converting unit 505 is configured to convert the target bit stream into a two-dimensional code according to a preset two-dimensional code generation algorithm.

For the implementation of the terminal shown in Figure 5, reference may be made to the method embodiment shown in Figure 1, and the repeated description is omitted.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of another terminal according to an embodiment of the present invention. As shown in FIG. 6, the terminal includes a scan recovery unit 601, a conversion unit 602, a demodulation unit 603, a first decoding unit 604, a second decoding unit 605, and a transmission unit 606, where:

The scan recovery unit 601 is configured to scan a two-dimensional code image, perform image restoration on the two-dimensional code image, and obtain a restored two-dimensional code image.

The converting unit 602 is configured to convert the restored two-dimensional code image into a target bit stream according to a preset bit stream generation algorithm.

The demodulation unit 603 is configured to demodulate the target bit stream to obtain target coding information.

The first decoding unit 604 is configured to extract the encoded original information from the target encoding information, and decode the encoded original information by using the first decoding manner to obtain original information.

The second decoding unit 605 is configured to extract the encoded authentication information from the target encoding information, and decode the encoded authentication information by using the second decoding method to obtain the authentication information.

The sending unit 606 is configured to send the authentication information to the authentication platform for authentication.

For the implementation of the terminal shown in Figure 6, reference may be made to the method embodiment shown in Figure 3, and the repeated description is omitted.

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of another terminal according to an embodiment of the present invention. As shown in FIG. 7, the terminal 710 includes a processor 712, a communication interface 713, and a memory 711. Optionally, terminal 710 can also include a bus 715. The communication interface 713, the processor 712, and the memory 711 may be connected to each other through a bus 715. The bus 715 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (abbreviated). EISA) bus and so on. The bus 715 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

Referring to FIG. 8, FIG. 8 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 8 , for the convenience of description, only parts related to the embodiment of the present invention are shown. If the specific technical details are not disclosed, please refer to the method part of the embodiment of the present invention. The mobile terminal can be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), an in-vehicle computer, and the mobile terminal is used as a mobile phone as an example:

FIG. 8 is a block diagram showing a partial structure of a mobile phone related to a mobile terminal provided by an embodiment of the present invention. Referring to FIG. 8 , the mobile phone includes: a radio frequency (RF) circuit 910 , a memory 920 , an input unit 930 , a display unit 940 , a sensor 950 , an audio circuit 960 , a wireless fidelity (WiFi) module 970 , and a processor 980 . , power supply 990 and camera 9110 and other components. It will be understood by those skilled in the art that the structure of the handset shown in FIG. 8 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements. The following describes the components of the mobile phone in detail with reference to FIG. 8:

The RF circuit 910 can be used for receiving and transmitting information. Generally, RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuitry 910 can also communicate with the network and other devices via wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.

The memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 920. The memory 920 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function, and the like; the storage data area may store data created according to usage of the mobile phone, and the like. Moreover, memory 920 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset. Specifically, the input unit 930 can include a fingerprint identification module 931 and other input devices 932. The fingerprint identification module 931 can collect fingerprint data of the user. In addition to the fingerprint recognition module 931, the input unit 930 may also include other input devices 932. Specifically, other input devices 932 may include, but are not limited to, one or more of a touch screen, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.

The display unit 940 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone. The display unit 940 can include a display screen 941. Alternatively, a liquid crystal display (LCD) or an organic light emitting diode (Organic Light-Emitting) can be used. The display screen 941 is configured in the form of Diode, OLED, or the like. Although in FIG. 8, the fingerprint recognition module 931 and the display screen 941 function as two separate components to implement the input and input functions of the mobile phone, in some embodiments, the fingerprint recognition module 931 and the display screen 941 can be implemented. Integrated to achieve the input and playback functions of the phone.

The handset may also include at least one type of sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 941 according to the brightness of the ambient light, and the proximity sensor may turn off the display screen 941 and/or when the mobile phone moves to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.

An audio circuit 960, a speaker 961, and a microphone 962 can provide an audio interface between the user and the handset. The audio circuit 960 can transmit the converted electrical data of the received audio data to the speaker 961 for conversion to the sound signal by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal by the audio circuit 960. After receiving, it is converted into audio data, and then processed by the audio data playback processor 980, sent to the other mobile phone via the RF circuit 910, or played back to the memory 920 for further processing.

WiFi is a short-range wireless transmission technology, and the mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 970, which provides users with wireless broadband Internet access. Although FIG. 8 shows the WiFi module 970, it can be understood that it does not belong to the essential configuration of the mobile phone, and may be omitted as needed within the scope of not changing the essence of the invention.

The processor 980 is the control center of the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 920, and invoking data stored in the memory 920, executing Mobile phone's various functions and processing data to rival The machine performs overall monitoring. Optionally, the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like. The modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 980.

The handset also includes a power source 990 (such as a battery) that supplies power to the various components. Preferably, the power source can be logically coupled to the processor 980 through a power management system to manage functions such as charging, discharging, and power management through the power management system.

The camera 9110 can perform photographing, photographing, and the like. When scanning the two-dimensional code image, the camera 9110 turns on and scans the two-dimensional code image.

Although not shown, the mobile phone may further include a Bluetooth module and the like, and details are not described herein again.

In the foregoing embodiments shown in FIG. 1 to FIG. 4, each step method flow can be implemented based on the structure of the mobile phone.

In the foregoing embodiments shown in FIG. 5 and FIG. 6, each unit function can be implemented based on the structure of the mobile phone.

The embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium can store a program, and the program includes any one of the two-dimensional code generation method and the two-dimensional code decoding method described in the foregoing method embodiments. Some or all of the steps.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as The division of the elements is only a logical function division, and the actual implementation may have another division manner. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a memory. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing memory includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes.

A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable memory, and the memory can include: a flash drive , read-only memory (English: Read-Only Memory, referred to as: ROM), random accessor (English: Random Access Memory, Jane Called: RAM), disk or CD.

The embodiments of the present invention have been described in detail above, and the principles and implementations of the present invention are described in detail herein. The description of the above embodiments is only for helping to understand the method of the present invention and its core ideas; It should be understood by those skilled in the art that the present invention is not limited by the scope of the present invention.

The invention will be described below with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system) and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or FIG. The computer program instructions may be provided to a general purpose computer, a special purpose computer or a processor of other programmable data processing apparatus to produce a machine such that when executed by a processor of a computer or other programmable data processing apparatus Means for implementing the functions/acts specified in one or more of the blocks of the flowcharts and/or block diagrams.

The computer program instructions can also be stored in a computer readable medium that causes a computer, other programmable data processing device, or other device to operate in a particular manner, such that instructions stored in the computer readable medium are An article of manufacture that implements the instructions of the functions/actions specified in one or more of the blocks of the flowcharts and/or block diagrams.

The computer program instructions can also be loaded onto a computer, other programmable data processing device, or other device to cause a series of operational steps to be performed on a computer, other programmable data processing device or other device to produce computer-implemented processing, thereby The instructions executed on a computer or other programmable device are provided for processing to implement the functions/acts specified in one or more of the blocks of the flowcharts and/or block diagrams.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the invention. In this regard, each block of the flowchart or block diagram can represent a module, a program segment, or a portion of code that includes one or more of the Executable make. It should also be noted that in some alternative implementations, the functions noted in the blocks may also occur in a different order than that illustrated in the drawings. For example, two consecutive blocks may be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, can be implemented in a dedicated hardware-based system that performs the specified function or function. Or it can be implemented by a combination of dedicated hardware and computer instructions.

The terminology used herein is for the purpose of describing particular embodiments, and is not intended to limit the invention. As used herein, the sing " It will be further understood that the terms "comprising" and "comprising", "the"," One or more other features, integers, steps, operations, elements, components, and/or groups thereof are added.

Claims

A two-dimensional code generation method, comprising:

Preparing original information and authentication information different from the original information, wherein the capacity of the authentication information is less than a prescribed ratio of the capacity of the original information;

Embedding the authentication information in the original information to obtain target information;

Modulating the target information to obtain a target bitstream; and

The target bit stream is converted into a two-dimensional code image according to a preset generation algorithm.
The method of claim 1 wherein

Embedding the encoded authentication information into the encoded original information according to an embedding strategy to obtain target encoding information.
The method of claim 1 wherein

The partial information in the encoded original information is replaced with the encoded authentication information to obtain target encoded information.
A method according to any one of claims 1 to 3, characterized in that

The capacity of the authentication information is less than a prescribed ratio of the capacity of the original information.
A two-dimensional code decoding method, comprising:

Taking a two-dimensional code image, performing image restoration on the two-dimensional code image, and obtaining a restored two-dimensional code image;

Converting the restored two-dimensional code image into a target bit stream according to a preset bitstream generation algorithm;

Demodulating the target bit stream to obtain target coding information;

Extracting original information from the target encoding information, and decoding the encoded original information by using a first decoding manner to obtain original information;

The encoded authentication information is extracted from the target encoding information, and the encoded authentication information is decoded using a second decoding method to obtain authentication information.
The method of claim 5, wherein the method further comprises:

The authentication information is sent to the authentication platform for authentication.
A terminal, comprising:

a first coding unit, configured to encode the original information by using a first coding manner to obtain coded original information;

a second coding unit, configured to encode the authentication information by using a second coding manner, to obtain coded authentication information, where the first coding mode is different from the second coding mode;

An embedding unit, configured to embed the encoded authentication information into the encoded original information to obtain target encoding information;

a modulating unit, configured to modulate the target coding information to obtain a target bitstream;

And a converting unit, configured to convert the target bit stream into a two-dimensional code according to a preset two-dimensional code generation algorithm.
The terminal according to claim 7, wherein the embedding unit embeds the encoded authentication information into the encoded original information, and the manner of obtaining the target encoding information is specifically:

The embedding unit embeds the encoded authentication information into the encoded original information according to a certain embedding strategy to obtain target encoding information.
The terminal according to claim 7, wherein the embedding unit embeds the encoded authentication information into the encoded original information, and the manner of obtaining the target encoding information is specifically:

The embedding unit replaces part of the information in the original encoding information with the encoding authentication information to obtain target encoding information.
The terminal according to any one of claims 7 to 9, characterized in that the capacity of the authentication information is smaller than the error correction capacity of the two-dimensional code.
A terminal, comprising:

a scan recovery unit, configured to scan a two-dimensional code image, perform image restoration on the two-dimensional code image, and obtain a restored two-dimensional code image;

a converting unit, configured to convert the restored two-dimensional code image into a target bit stream according to a preset bitstream generation algorithm;

a demodulation unit, configured to demodulate the target bit stream to obtain target coding information;

a first decoding unit, configured to extract encoded original information from the target encoding information, and decode the encoded original information by using a first decoding manner to obtain original information;

And a second decoding unit, configured to extract the encoded authentication information from the target encoding information, and decode the encoded authentication information by using a second decoding manner to obtain the authentication information.
The terminal according to claim 11, wherein the terminal further comprises:

And a sending unit, configured to send the authentication information to the authentication platform for authentication.
A two-dimensional code generation method, comprising:

Encoding the original information using the first encoding method to obtain the encoded original information;

Encoding the authentication information by using the second encoding manner to obtain encoding authentication information, where the first encoding manner is different from the second encoding manner;

Embedding the encoded authentication information into the encoded original information to obtain target encoded information;

Modulating the target coding information to obtain a target bitstream;

The target bit stream is converted into a two-dimensional code image according to a preset two-dimensional code generation algorithm.