43results about How to "Prevent malicious cracking" patented technology

A picture identifying code generation method comprises the following steps: obtaining a background picture; obtaining foreground characters; embedding the foreground characters in the background picture so as to obtain a picture identifying code; generating interference element used for cutting the foreground characters and integrating with background picture color. The method uses the interference element integrating with the background picture color in the picture identifying code to cut the foreground characters, so an automatic machine can only extract foreground character fragments in the picture identifying code without extracting the whole foreground characters, thus increasing automatic machine difficulty of declassifying picture identifying code; the foreground characters are cut, yet a whole layout formed by the foreground character fragments allow the image identifying code to be easily recognized by a user, so the difficulty of the user identifying the picture identifying code is not increased; in addition, the invention also provides a picture identifying code generation system, a verify method based on the picture identifying code, a client side, and a server.

The invention provides a method and device for encryption/decryption of an executable program data package. The method comprises the steps that the executable program data package is acquired; based on preset rules, the executable program data package is divided into multiple original documents; a first secret key is used to encrypt the multiple original documents respectively, so that encryption documents which have one-to-one correspondence relations with each original document respectively can be obtained; the multiple encrypted encryption documents are received; a second secret key corresponding to the first secret key is used to decrypt the multiple encryption documents respectively, so that the multiple original documents which have the one-to-one correspondence relations with the encryption documents can be obtained; and index information of the original documents are used respectively to reform the multiple original documents, so that the executable program data package can be obtained. The method and the device provided by the invention have the advantages that vicious decryption of the executable program data package caused by theft of a single secret key in the executable program data package can be prevented; a probability of the vicious decryption of an application program can be reduced; and data safety of the application program can be enhanced.

The invention relates to a connecting method and system for a wireless fidelity network. The method comprises the steps that a wireless fidelity hotspot receives a wireless fidelity network connecting request of a mobile terminal, and acquires a secret key and identity information sent by the mobile terminal; the wireless fidelity hotspot judges whether the identity information is matched with prestored identity information, and judges whether the secret key is matched with a prestored secret key; and if the identity information is matched with the prestored identity information, and the secret key is matched with the preset secret key, the wireless fidelity hotspot establishes a wireless fidelity network connection with the mobile terminal. Due to dual authentication mechanisms of identity information and secret key, the Wi-Fi network connection security is sharply improved, the Wi-Fi hotspot can be effectively prevented from being cracked maliciously, the data traffic of the user is prevented from being used maliciously, and the user experience is further improved.

The invention discloses a software anti-crack method and system. The method comprises the steps that terminal equipment acquires an application private key from an application management server when the terminal equipment needs to install a main application file of an application, and if acquiring fails, installation is stopped; when the terminal equipment receives a function execution command to the application for the first time, the terminal equipment applies to the application management server for the application function load authorization, after the authorization is acquired, a class SEC file of the application is loaded, the SEC file is encrypted by means of the application private key, the acquired encrypted file F[SEC] is saved, and the application private key and a plaintext of the SEC file are deleted; when the terminal equipment receives the function execution command to the application not for the first time, the terminal equipment applies to the application management server for a decryption key corresponding to the application private key, the applied decryption key is utilized for decrypting the encrypted file F[SEC], the plaintext of the SEC file is acquired and loaded, and after loading is finished, the decryption key and the plaintext of the SEC file are deleted. By means of the software anti-crack method and system, the software can be effectively prevented from being cracked maliciously.

The invention discloses a method and system for constructing a data encryption and decryption algorithm based on an ARM instruction, and relates to the technical field of data encryption and decryption. The method comprises the following steps: setting an addition operation, wherein the addition operation is used for realizing addition operation based on the ARM instruction; setting a subtraction operation, wherein the subtraction operation is used for realizing subtraction operation based on the ARM instruction; setting a left shift operation, wherein the left shift operation is used for realizing a data logic left shift operation based on the ARM instruction; setting a right shift operation, wherein the right shift operation is used for realizing a data logic right shift operation based on the ARM instruction; and randomly combining the set basic operations to construct the data encryption and decryption algorithm based on the ARM instruction. By adoption of the method and system disclosed by the invention, the data encryption and decryption algorithm can be effectively prevented from being maliciously cracked, and the security of data encryption and decryption is improved.

The invention discloses an electric vehicle fingerprint identification intelligent anti-theft system. The system uses the feature point information, the vector field information and the fingerprint texture information of the fingerprint image to carry out multi-feature point fusion matching, which greatly reduces the false recognition caused by the false features in the fingerprint identificationmatching process, and enhances the safety of the electric vehicle fingerprint identification. Anti-cracking security mechanism is added to that identification matching process, when the number of times of continuous identification of the matching failure exceed a set value, the fingerprint identification is refused again, and the malicious cracking is effectively prevented; Fingerprint identification module with identification feedback function can give users more intuitive fingerprint identification feedback; The fingerprint management is carried out by using the virtual menu composed of thelogic operation of the traditional remote controller keys or the physical switch on the whole vehicle and the phonetic system, without adding additional visual equipment and input keys, which is simple, easy to use and low in cost. Virtual menu access must be authorized by the first administrator to access, effectively prevent the illegal management of fingerprints.

The invention discloses an electromechanical equipment original factory accessory verification method based on cloud computing, and the method comprises the following steps: adding an accessory verification algorithm and an accessory-related flag bit to a controller used in electromechanical equipment when the controller leaves a factory, and the controller being connected with an HMI in a wired manner; establishing a plurality of sign accessories effective days in the controller, and storing the sign accessories effective days in the controller; when the accessories are replaced, using a mobile phone APP for scanning bar codes on the accessories and then uploading the bar codes to a server through a network, and the controller monitoring the state of each accessory at set intervals; the server performing database verification according to the SN code uploaded by the APP; and the controller analyzing the input serial number in a normal working state. According to the method, maliciousreplacement of inferior third-party accessories, accessory applicability, accessory quality and safe operation of electromechanical equipment can be guaranteed, and the problems that accessories are unqualified, the quality cannot be guaranteed and potential safety hazards exist when third-party accessories of existing electromechanical equipment are maliciously replaced are solved.

An embodiment of the invention provides a file protection method and device. The file protection method comprises the steps of randomly selecting one number from a plurality of preset numbers as a random number, carrying out the encryption processing of a first password set by a user, acquiring an encrypted first password, splicing an encryption date and the encrypted first password, so as to obtain a spliced first sequence, encrypting the spliced first sequence and the random number to obtain a key sequence, counting the key sequence and the random number to determine an encryption starting position of the key sequence, and encrypting a to-be-encrypted file by using the key sequence based on the encryption starting position to obtain an encrypted file. The key sequence is not fixed and random, so that the flexibility and the unpredictability of the key sequence can be improved, the safety and the reliability of the encrypted file can be greatly improved, and the risk that file data isleaked can be reduced.

The invention discloses an authorization encryption method of an upper computer program of a BMS (Battery Management System). The authorization encryption method comprises the following steps that: a user PC (Personal Computer) is installed with the upper computer program and obtains authorization through an authorization code; the upper computer program reads hardware information of the PC, generates a hardware identification code, puts the hardware identification code in the authorization code and stores a new authorization code in the upper computer program; the PC is connected to the BMS for the first time, the BMS interactively contrasts the authorization code information through the upper computer program and confirms if the PC is legally authorized; and when the BMS is needed to be connected to be written and read, the PC is connected to the BMS to start up the upper computer program, and the BMS checks if the upper computer program is legally authorized. The authorization encryption method of the upper computer program of the BMS can protect the upper computer program technology and use right thereof efficiently, prevent an authorization code file from being decrypted maliciously and reduce a risk of software imitation.

Embodiments of the invention disclose a chip mutual identification method and device, a storage medium and a mobile terminal. The method is applied to the mobile terminal comprising a processor and amemory, and comprises the steps: obtaining the serial number of the memory when detecting that the mobile terminal is started for the first time; generating a first mutual identification code and a second mutual identification code according to the serial number; writing the first mutual identification code into a processor, and writing the second mutual identification code into a memory; if it isdetected that the mobile terminal is not started for the first time, obtaining a first mutual identification code and a second mutual identification code; inversely solving a first serial number according to the first mutual identification code, and inversely solving a second serial number according to the second mutual identification code; if the first serial number is the same as the second serial number, allowing the mobile terminal to be started; and if the first serial number is different from the second serial number, forbidding starting the mobile terminal. Therefore, other people canbe prevented from maliciously cracking the program, and the program security of the mobile terminal is improved.

The invention discloses an Internet of Things intelligent meter production test system and a safety protection method. The problems that an existing meter lacks security and secrecy measures in the production test link, and information leakage exists are solved. The system comprises a meter end, an operation and maintenance server end and a cloud end which are sequentially connected through encryption communication, and a credible test tool is connected to the meter end and connected with a cloud end through encryption communication. In the production test period of the meter end, the contentcontacted by an operator is encrypted, all the content burnt into the MCU controller is verified, and all the communication is encrypted communication based on identity authentication, so that the leakage risk is reduced from the source.

The invention discloses a method and equipment for processing a file in a privatized format. The method is applied to the electronic equipment and comprises the steps that a first operation for a first file is received, the first file is a privatized format file and located in a memory of the electronic equipment, and the first operation is used for instructing specific software to store the first file; encrypting the first data through the encryption lock to obtain second data, the first file including the first data; signing the first data based on an equipment private key in the encryption lock to obtain fourth data; wherein the device private key corresponds to a developer of the specific software associated with the privatized format file; and persistently storing a second file comprising the second data, the fourth data and the certificate chain. By adopting the implementation mode, the user can open, edit and store the file in the privatized format only under the condition that the user can legally use the specific software and hold the specific encryption lock capable of decrypting the file in the privatized format, so that the content of the file can be prevented from being maliciously acquired.