Abstract: A method and a system for authorizing acquisition of an attack alarm information log of a terminal, belonging to the field of communication technology, the method includes: after obtaining the authentication account with an authority to obtain the attack alarm information log, a server authenticates the legality of a client tool; after the legality passes the authentication, the terminal sends a second to-be-authenticated data to the client tool, and the client tool sends the second to-be-authenticated data to the server; after the second to-be-authenticated data passes the authentication, the server encrypts the second to-be-authenticated data to generate a second authentication data, and sends the second authentication data to the terminal; if the second authentication data passes the authentication, the terminal obtains and encrypts the attack alarm information log, and then sends it to the client tool after encryption.

Abstract: The invention provides a method and system for safely switching between product mode and development mode of a terminal, aiming at addressing the problem in the prior art that the terminal in a testing development version may be accidentally circulated into the market and cause hidden safety risk. According to the invention, different Certificate Authorities (CAs) are configured for the terminal at different stages; by storing the public-private key pairs of the certificates issued by different CAs in different secure storage media, only if the secure storage medium corresponding to the current CA state of the terminal is verified to be valid, the flags of the terminal can be successfully rewritten; a safe switching between different CA states of the terminal is realized. It is ensured that the terminal in the testing development stage cannot be used normally, thereby improving the safety of the terminal device.

Abstract: The inventor provides a Bluetooth automatic connection method and a master device, slave device, and system for implementing Bluetooth automatic connection, solving the problem that manual selection and connection are needed in a scenario in which there are multiple Bluetooth devices. The present invention relates to implementation of connection between Bluetooth devices, and in particular, quick automatic connection of the Bluetooth devices.

Abstract: A method for providing a solution to ADB port occupancy includes: adding functional compound information to attribute information of an ADB device; setting descriptor information of the ADB device as preset descriptor information if VID and PID of the ADB device are consistent with preset VID and preset PID; the preset VID, the preset PID and a corresponding interface number are added to an ADB driver information file of a PC device; modifying a communication port number into a preset port number in an ADB communication program; installing a corresponding ADB driver if it is determined by the PC device that the VID, PID and interface number of the ADB device are consistent with the preset VID, the preset PID and the preset interface and that the descriptor information of the ADB device is the preset descriptor information; and setting the communication port number as the preset port number.

Abstract: The invention provides a method and system for encrypting and decrypting two-dimensional code mask. The method comprises: generating a target two-dimensional code containing a function pattern and an identification, an initial mask pattern and a key by a two-dimensional code generating device; sending the identification, the initial mask pattern and the key to a server by the two-dimensional code generating device; sending the identification to the server by the two-dimensional code decoding device; receiving the identification by the server; sending the key and the initial mask pattern to the two-dimensional code decoding device by the server according to the identification; receiving by the two-dimensional code decoding device the key and the initial mask pattern sent by the server; and decrypting the encrypted two-dimensional code by the two-dimensional code decoding device according to the key and the initial mask pattern to acquire the target two-dimensional code. The system has high security.

Abstract: Disclosed are a two-dimensional code card grabbing and storage device and method. The two-dimensional code card grabbing and storage device includes a horizontal base plate. First side plates and second side plates are sequentially disposed on the front side and the rear side of the horizontal base plate separately in the horizontal direction and perpendicularly fixed to the upper surface of the horizontal base plate. First baffles extending inwards are oppositely and perpendicularly disposed on the outer sides of the two first side plates, and second baffles extending inwards are oppositely and perpendicularly disposed on the inner sides of the two second side plates. A first guide plate used for storing tested two-dimensional code cards is obliquely disposed upward between the two first side plates, and a second guide plate used for storing to-be-tested two-dimensional code cards is obliquely disposed upward between the two second side plates.

Abstract: The invention provides a detection method and system for characteristic patterns of Han Xin codes. The detection method comprises the steps: binarizing a received two-dimensional code image, scanning the two-dimensional code image line-by-line and column-by-column so as to search out the four vertexes of a Han Xin code region, connecting every two vertexes of the four vertexes so as to form the four boundaries and two diagonal lines of the Han Xin code region, searching out four characteristic line segments starting from the vertexes and having the continuous binarization values 1, 0, 1, 0, 1 from the two diagonal lines and also searching out the end points of the characteristic line segments, and calculating the boundaries and the data bit width of position detection patterns of the Han Xin code according to the start points and the end points of the characteristic line segments.

Abstract: A decoding method includes that when encoding at a sending terminal, for a m-order primitive polynomial P(x), a primitive field element in galois field GF(2m) is represented by ?; a lookup table f(?j) for different power exponents of ? is established, where the value of j is selected from all the integers ranging from 0 to 2m?1, with a total number of 2m; a generator polynomial G(x) is expanded to obtain a polynomial with respect to x, with coefficients being an addition or subtraction of the power exponents of ?; a remainder polynomial R(x), obtained by dividing code word polynomial Q(x) by the generator polynomial G(x), is a polynomial with respect to x, with coefficients being an addition or subtraction of the power exponents of ?; and the coefficients of the generator polynomial G(x) and the remainder polynomial R(x) are both calculated using data found in the lookup table f(?j).

Abstract: The invention discloses a method and system for identifying fingerprint. The method comprises: S1: adjusting a camera to focus the camera on a lens; S2: capturing continuously by the camera fingerprint images formed by a finger pressing the lens, and sending the fingerprint images to an image processing module; and S3: processing the fingerprint images by the image processing module so as to acquire fingerprints. In this way, only a common camera is required for acquiring the fingerprint according to the invention, which is easy to operate at a low cost.

Abstract: The invention provides a decoding method and system for a QR code with one damaged position detection pattern. The decoding method comprises the steps: binarizing a received image containing a QR code pattern and searching for position detection patterns, decoding the QR code pattern through the following method if two position detection patterns are searched out, recording the linear equations of the boundaries of the two position detection patterns and the vertex coordinates of the two position detection patterns and calculating the data bit width of the QR code pattern, searching out a location pattern between the two position detection patterns with the positional relation determined, determining the region where the QR code pattern is located according to the two position detection patterns and the location pattern, partitioning the region where the QR code pattern is located with grids, and decoding the QR code pattern partitioned with grids.

Abstract: A method and a system for authorizing acquisition of an attack alarm information log of a terminal, belonging to the field of communication technology. the method includes: after obtaining the authentication account with an authority to obtain the attack alarm information log, a server authenticates the legality of a client tool; after the legality passes the authentication, the terminal sends a second to-be-authenticated data to the client tool, and the client tool sends the second to-be-authenticated data to the server; after the second to-be-authenticated data passes the authentication, the server encrypts the second to-be-authenticated data to generate a second authentication data, and sends the second authentication data to the terminal; if the second authentication data passes the authentication, the terminal obtains and encrypts the attack alarm information log, and then sends it to the client tool after encryption.

Abstract: A primary localization method for QR codes comprises: S1, binarizing pixel points of a received image containing a QR code; S2, partitioning the image into at least one mesh region; S3, recording the number of black pixel points in each mesh region, assigning the value 1 to mesh regions including black points, and assigning the value 0 to mesh regions not including black points; S4, marking the image as a non-object region; S5, scanning the non-object region line-by-line and column by column and marking the union of the mesh regions continuously with the value 1 for the first time in each line and the mesh regions continuously with the value 1 for the first time in each column as an object region; S6, judging whether the object region is the QR code region, if not, returning to step S5, and if yes, outputting the line numbers and the column numbers.

Abstract: The present invention relates to a method and system for quantitative defacing of a QR Code. Defacing of the method includes data and error correction code word defacing, boundary defacing, position detection pattern defacing, correction pattern defacing, positioning pattern defacing, version information defacing, and format information defacing. Quantitative defacing varies with the defacing patterns and positions of a barcode. The defacing degree of the QR Code is not greater than the capability of the barcode for correcting error codes. The number of coding characters of the QR Code is required to be equal to the character number of a data code word which is specified by a current barcode version and correction grade, and the situation of adding filling characters does not exist. Defacing of the data and error correction code words does not include defacing of remaining bits. Defacing patterns include pre-stage printing defacing and rear-stage actual defacing.

Abstract: Disclosed are a two-dimensional code card grabbing and storage device and method. The two-dimensional code card grabbing and storage device includes a horizontal base plate. First side plates and second side plates are sequentially disposed on the front side and the rear side of the horizontal base plate separately in the horizontal direction and perpendicularly fixed to the upper surface of the horizontal base plate. First baffles extending inwards are oppositely and perpendicularly disposed on the outer sides of the two first side plates, and second baffles extending inwards are oppositely and perpendicularly disposed on the inner sides of the two second side plates. A first guide plate used for storing tested two-dimensional code cards is obliquely disposed upward between the two first side plates, and a second guide plate used for storing to-be-tested two-dimensional code cards is obliquely disposed upward between the two second side plates.

Abstract: The inventor provides a Bluetooth automatic connection method and a master device, slave device, and system for implementing Bluetooth automatic connection, solving the problem that manual selection and connection are needed in a scenario in which there are multiple Bluetooth devices. The present invention relates to implementation of connection between Bluetooth devices, and in particular, quick automatic connection of the Bluetooth devices.

Abstract: The invention provides a method and system for decoding two-dimensional code using weighted average gray-scale algorithm. The method comprises: segmenting a received two-dimensional code image into bit regions each containing one bit data; presetting a shifting threshold, and shifting four original boundary lines of the bit region outwards by a distance of the shifting threshold to obtain four preset boundary lines; calculating an average gray-scale value of the bit region using the weighted average algorithm by taking an overlapping area between pixels inside the four preset boundary lines and the bit region as a weight; binarizing the two-dimensional code image according to the average gray-scale value of the bit region; and decoding the two-dimensional code image. The influence of the pixels which have an overlapping area with the bit region on the average gray-scale value of the bit region is considered, and the decoding accuracy and success rate are high.

Abstract: A method includes: dividing a received QR code image into a multi-row image of rows of pixels whose number is the same as a threshold of the number of rows; calculating an average grayscale value of each column of pixels to form row data, and binarizing the row data; extracting a rectangle image in the binarized row data whose similarity to a preset proportion is smaller than a threshold; binarizing the rectangle image and a region formed by extending the rectangle image by the width threshold upwardly and downwardly respectively; searching for column line segments meeting the preset proportion on a middle column of the rectangle image; translating a diagonal line of a square image in upward and downward directions respectively; searching for and recording black-white demarcation points on the edge of the square image on the translated diagonal line and forming a position detection pattern of the QR code.

Abstract: A block decoding method includes: storing a received two-dimensional code image in an image data backup register; binarizing the received two-dimensional code image; searching for a boundary line of the two-dimensional code image; segmenting each of the regions into bit regions each of which corresponds to one bit data; re-acquiring the received two-dimensional code image stored in the image data backup register; calculating an average gray-scale value of all the pixels in the bit region as a gray-scale value of the bit region; calculating a gray-scale threshold of each of the bit regions n using the Otsu method; binarizing the bit region so as to obtain a binarized two-dimensional code image; and decoding the binarized two-dimensional code image. A system for a two-dimensional code is also disclosed.