33results about How to "Improve anti-cracking performance" patented technology

The invention is suitable for the field of computer security, and provides a user identity authentication method and device and an authentication service system. The method comprises the following steps: generating an authentication picture group and an authentication tag, and issuing the authentication picture group and the authentication tag to a client; receiving authentication information transmitted by the client, wherein the authentication information comprises a picture identifier of a picture selected by a user from the authentication picture group according to the authentication tag; and acquiring a tag of a picture corresponding to the picture identifier in the authentication information, and matching the tag of the picture corresponding to the picture identifier in the authentication information with the authentication tag in order to authenticate the identity of the user. The authentication method provided by the invention has high crack resistance and high security.

The invention discloses a generation method for an image identifying code, and comprises that color distribution and brightness distribution of natural background images are calculated, by means of the calculated color and brightness distribution, word colors and word brightness of foreground words are respectively determined. Background words are embedded into the natural background image according the determined word colors and word brightness. The invention also discloses a generation system for the image identifying code, the generated image identifying code after using the invention can bring better visual experiences to users and is difficult to be decoded.

The invention provides a method for separating code to an encryption lock from an executable file directly comprising separating code to an encryption lock from an executable file directly, setting a clock timer and a random number generator in the intelligent card encryption lock, filling an interactive code for communication with the encryption lock in the vacancy of the executable file after the code is separated, the encryption lock dynamically decomposing, encrypting and protecting the code that is separated into the lock and needed to be executed continuously by using a specific protocol and algorithm, wherein a plurality of blocks are generated and the release of the block is determined by the normal executed time of the previous block, if the request for demanding the next block sent from the interactive code arrives in the encryption lock in the normal time period, an effective information will be released from the encryption lock, if not, an ineffective information is released. Moreover, a layer of encryption lock filter drive program is added to the encryption lock and the interactive code. Thereby, the illegal monitor and interception of the communication data in the communication link and system are prevented.

The invention relates to an identity verification method and apparatus which have the advantages of being high in declassification capability and improving the normal user pass rate. The method comprises the following steps: a user terminal sending a verification code extracting request to a server; receiving and displaying a verification code picture returned by the server according to the verification code extracting request and an input interface, wherein the content of the verification code picture comprises multiple verification objects arranged according to a predetermined sequence, the content of the input interface comprises multiple objected to be selected, and the multiple objects to be selected at least comprises all the verification objects in the verification code picture; detecting touch control operation acting in the input interface, and when the touch control operation is preset touch control operation, obtaining the touch control position and time of the touch control operation; and sending the touch control position and time of the touch control operation to the server, and when the server determines the objects which the touch control operation acts on include and only include all the verification objects in the input interface and a touch control sequence is the same as the predetermined sequence according to the touch control position and time, approving verification.

The invention discloses a steel bar truss floor deck which comprises a base plate and a plurality of steel bar assemblies. Each steel bar assembly comprises at least one bottom chord piece, an upper chord steel bar and two web member steel bars, wherein each bottom chord piece comprises two parallelly extending first steel bars and a first connecting steel bar which is connected with the first ends of the two first steel bars, and the bottom chord pieces are arranged above the base plate; the upper chord steel bar is arranged above the uppermost bottom chord piece; each web member steel bar is in an S shape, extends from one end of the upper chord steel bar to the other end of the upper chord steel bar, is fixedly connected with the top face of the base plate, the inner sides of the two first steel bars and the upper chord steel bar, and comprises a plurality of steel bar sections, and each steel bar section extends from one side of the upper chord steel bar to the other side of the upper chord steel bar; and the two web member steel bars are separately arranged on the two sides of the same position of the upper chord steel bar. The steel bar truss floor deck is rapid in construction progress, and the occupied area of a workyard is saved.

The invention provides a dictionary data searching method, for offering dictionary data search service on network server, comprising the steps of: 1) establishing data search engine corresponding to single key and presetting database system; 2) classifying data contents corresponding to fixed keywords and uniquely storing them into a fixed database; And 3) after obtaining the keywords, the server obtains corresponding data contents according to search mechanism of the database system and sends the data contents to client end. And it has characters of high efficiency, simple user configuration, and needing no independently configuring database environment, and can flexibly regulate data encrypting mode and maximum assure data security.

The invention relates to a shared key processing method and device, a storage medium and electronic equipment. The method comprises the following steps: generating a parameter matrix according to thesafety parameters; randomly generating a first private key matrix and a first noise matrix, parameter matrix, a first private key matrix and a first noise matrix, determining a first public key matrix, and removing information on a specified bit of each element in the first public key matrix so as to update the first public key matrix; sending the updated first public key matrix and the security parameters to a receiving end, so that the receiving end determines a second public key matrix according to the security parameters, and encrypts the shared key according to the updated first public key matrix and second private key matrix to obtain consensus information; receiving the second public key matrix and the consensus information sent by the receiving end, and decrypting the consensus information according to the first private key matrix and the second public key matrix to obtain the shared key. The communication bandwidth is reduced by removing information on a specified bit of eachelement in a public key matrix.

The embodiment of the invention provides firmware data verification equipment and method and firmware updating equipment and method and system. The verification method comprises the following steps: receiving first firmware data sent by data generation equipment, wherein the first firmware data comprises second firmware data encrypted by the data generation device and a digital signature; verifying the digital signature of the first firmware data; under the condition that the digital signature is verified successfully, removing the digital signature from the first firmware data to obtain the second firmware data; splitting the second firmware data to generate a plurality of encrypted data packets; and sending the plurality of encrypted data packets to firmware updating equipment, so that the firmware updating equipment decrypts the plurality of data packets and performs firmware updating. Therefore, the hardware cost of the firmware updating equipment can be reduced, and the updating efficiency is improved; and the flexibility of a firmware updating mode can be improved.

The invention discloses a 3D model encryption transmission method and decryption method. The 3D model encryption transmission method comprises the steps that a user side obtains a first public key generated by a server side; the user side generates a first secret key; the user side performs digital signature on the G code file to be transmitted; the user side carries out slicing out-of-order processing on the G code file with the digital signature to generate a G code file group and combination sequence information; the user side encrypts the G code file group through a first secret key to generate a first ciphertext; the user side encrypts the first secret key through the first public key to generate a second secret key; the user side generates a first information file; the user side encrypts the first information file through the first public key so as to generate a second ciphertext; and the user side sends the first ciphertext and the second ciphertext. According to the 3D model encryption transmission method provided by the invention, the first ciphertext and the second ciphertext transmitted by the invention have relatively high anti-cracking capability.

In order to solve the problem that a CAN bus encryption mode is easy to crack in the prior art, the invention provides a CAN bus encryption method for encrypting data by using an encryption algorithm.The method is characterized in that the following steps: performing SM3 algorithm operation on original data to generate a hash value; extracting a plurality of bits of data from the hash value, combining the data with the original data to form 128 bits of combined data, and performing SM4 algorithm operation on the combined data to encrypt the combined data; finally, realizing the decryption ofSM3 and SM4 algorithms on the FPGA platform, and completing the data interaction between software and hardware by utilizing an AXI bus. The encryption system is constructed by adopting SM3 and SM4 password symmetric encryption and decryption algorithms, an encryption method is provided for bus data, information verification can also be realized, and the security, reliability and anti-cracking capability of CAN bus data are improved.

The invention discloses an information verification method based on audio frequency and a device. The information verification method based on audio frequency comprises steps of randomly acquiring pre-stored audio frequency data from an audio frequency database, transmitting the above audio frequency data and sending mapped prompt information carried by the audio frequency data to the user terminal, receiving verification information returned by the user terminal according to the audio frequency data and the prompt information, determining whether accuracy of all characters in the verification information which are inputted by a user achieve a preset threshold corresponding to the verification mode according to the verification mode of the mapping of the prompt information, and if yes, verifying and passing the verification information inputted by the user. Compared with the prior art, the system adopts the same playing tones to play the verification prompt tones having the same durations. The embodiment of the invention improves the cracking resistance of voice verification codes and improves the safety of the voice verification and flexibility of information verification, and has a certain error tolerance performance in the process of verifying information.

The invention discloses a concrete material for inverted siphon construction in hydraulic engineering technique domain, which comprises the following steps: allocating ((kg/m3) 220-240kg cement, 55-60kg coal ash, 135-150kg water, 640-645kg sand with sand percentage at 33%, 655-660kg small stone with diameter at 5-20mm and 670-675kg middle stone with diameter at 20-40mm; choosing 0. 7% dehydragent and tenthousandth 0. 4 air-entrainer; getting the product. This invention provides concrete fitting ratio, which can prepare inverted siphon with good prevented cracking quality.

An embodiment of the invention discloses a verification code interference method. The method comprises the steps of drawing a foreground character on a blank drawing board to generate and obtain a character content picture, and performing Gaussian blur processing on a background picture to generate and obtain a blurred picture; performing image fusion processing on the background picture, the blurred picture and the character content picture to obtain a verification code picture; receiving a verification code obtaining request sent by a network server; and sending the verification code pictureto the network server, thereby enabling the network server to send the verification code picture to a user terminal for enabling the user terminal to display the verification code picture to prompt auser to input a check code and submit the check code to the network server for performing check. An embodiment of the invention furthermore discloses a verification code generation server. By adopting the method and the server, the anti-cracking capability of a verification code can be improved.

The invention belongs to the technical field of network security, and provides a verification code generation method, a login verification method and a verification login system. The method includes:generating at least two patterns; establishing an action instruction library, wherein the action instruction library comprises multiple groups of action instructions, and each group of action instructions corresponds to one judgment standard; randomly selecting a group of action instructions, controlling a plurality of patterns to execute the action instructions, and marking judgment standards corresponding to the action instructions as selected standards; and comparing execution results of the plurality of patterns, and selecting one pattern meeting a selected standard as a target pattern. Through the technical scheme, the problem of poor security of the verification code in the prior art is solved.