48results about How to "Increase attack cost" patented technology

The present disclosure describes an optimization method for embedding parameters of an anti-copy two-dimensional code, which is characterized in that it includes: obtaining an initial two-dimensional code; printing and scanning the initial two-dimensional code to obtain multiple target two-dimensional codes; A target two-dimensional code, according to the method of smoothing and averaging, synthesize multiple target two-dimensional codes with a preset number of target two-dimensional codes into a corresponding two-dimensional code composite graph; calculate the mean value, variance and shape factor of the two-dimensional code composite graph, and correct them The corrected mean, corrected variance and corrected shape factor are obtained by modifying the mean, variance and shape factor of the function; the theoretical corrected bit error rate is obtained through the generalized Gaussian function based on the corrected mean, corrected variance and corrected shape factor; and the theoretical corrected bit error rate is compared with the two-dimensional The error correction ability of the code, when the theoretical corrected bit error rate is less than or equal to the error correction ability of the two-dimensional code, the error correction ability of the two-dimensional code is reduced to increase the attack cost of the illegal copying party.

The embodiment of the invention discloses a verification method and device and a storage medium, and belongs to the field of information security. The method comprises the steps of obtaining a verification task, wherein the verification task comprises a preset algorithm and a preset condition; Determining at least one piece of verification data, and calculating the determined verification data according to a preset algorithm to obtain a calculation result corresponding to the determined verification data; And when a calculation result corresponding to the currently determined check data satisfies a preset condition, sending the currently determined check data to a server, calculating the currently determined check data by the server according to a preset algorithm; and when the calculationresult obtained by calculation satisfies the preset condition, determining that the verification is passed. According to the embodiment of the invention, under the condition that the security is ensured, the server only needs to calculate the verification data which are sent by the terminal and meet the verification task, and the verification data which do not meet the verification task do not need to be calculated, so that the workload of the server is reduced, and the working pressure of the server is reduced.

The invention discloses a big data network data protection method and system based on edge computing, including: S1, determining the computing power level of the client; S2, determining the data encryption strength; S3, judging whether the computing power level of the client can meet Encryption strength requirements, if yes, execute step S4, if not, execute step S5; S4, slowly encrypt the plaintext password to obtain the first temporary password, execute step S8; S5, the application server selects multiple other connected clients, and sends the plaintext The password, salt, and encryption strength are sent to the selected client; S6, the selected client slowly encrypts the plaintext password to obtain the second temporary password; S7, the application server determines the first temporary password based on the received multiple second temporary passwords; S8. The server fast-encrypts the first temporary password to obtain an encrypted password, and saves the user name, salt, and the encrypted password. The invention realizes an effective balance between security protection and computing performance, and has high data security.

The present invention discloses an execution body scheduling method oriented to a web server with a mimic structure, comprising: step 1, generating a candidate execution body set, randomly selecting m execution bodies, and calculating the average value of the vulnerability value and the standard deviation of the vulnerability value of each layer of software stack , to screen n executives within the threshold range of the vulnerability value; step 2, randomly select two QoS parameters, and calculate the QoS parameter value; step 3, map the Bayesian-Stackelberg game model to the mimic structure On the web server of , construct the objective function for solving the optimal scheduling strategy; step 4, bring two QoS parameter values ​​into the objective function, and obtain k execution bodies with the best QoS parameter values; step 5, generate random number r , if r≥ε, then dynamically schedule the heterogeneous executables of the mimic web server according to the k executables. The invention has the beneficial effects of increasing confusion and improving defense ability while ensuring the service quality of the Web server.