501 results about "Software protection" patented technology

The invention discloses a software protection method based on network, a client side and a server, which is used for improving the accuracy and the effectiveness for detecting whether client side software is distorted. The method comprises: a server side receives a program operation request sent by the client side and sends random data to the client side according to the program operation request; the client side adopts a set Hash algorithm to determine a first Hash value according to client side identification, random data and a program code segment which is stored in the client side and corresponds to the edition information of software to be operated; the server side adopts the set Hash algorithm to determine a second Hash value according to client side identification, random data and a program code segment which is stored in the client side and corresponds to the edition information of software to be operated; the first Hash value and the second Hash value are compared to determine whether the client side is permitted to execute the program according to the comparison result. The technical scheme of the invention improves the accuracy and the effectiveness for detecting whether client side software is distorted.

The method combines server end with intelligent cipher key device. Network communication is carried out between server end and client end under C/S or B/S structure. ID of client end is authenticated by server end. Program at client end runs and generates session key. Client end sends service request encrypted by session key to server end, and sends session key encrypted by public key. After receiving encrypted service request, server end runs service corresponding to client end, and returns session key encrypted run result to the client end. The server end is bound to the intelligent cipher key device, which is safety carrier capable of preventing interpolating and embezzling internal information. Intelligent cipher key device allows private key used inside equipment. The private key cannot be reproduced and attacked to enhance security of software at server end.

The invention discloses an Android application reinforcing method based on C source code mixing. The method comprises writing program key codes by using C programming languages and mixing C source codes. The reinforcement of Android application is achieved by mixing the C source codes in the Android application program, and the Android application program codes are protected. The Android application reinforcing method based on C source code mixing specifically includes the steps of writing the key part of the program by using C programming languages, writing programs into .so dynamic-link library file, invoking the dynamic-link library by using JNI technology in Java language, and then mixing the C source codes, so as to achieve the reinforcement of Android application. According to the Android application reinforcing method based on C source code mixing, important codes are saved in the C dynamic-link library by adopting NDK programming, and then the C source codes are mixed, the software protection is improved. At the same time, the important codes are written in a so library, the reusability of the codes are increased, ready-made so library can be directly introduced into other applications, so as to eliminate the troubles of secondary development.

The invention discloses a protecting method and a protecting system for authentication server software copyright. The protecting method includes authorization request. The authorization request includes the steps that first request information sent by a user terminal is received, and the first request information comprises software information and hardware information bound with the software information; whether the software information in the first request information is stored is queried; and if the software information in the first request information is not stored, after the first request information is stored, a digital signature is conducted on the software information and the hardware information in the first request information, and the signature is used as authorization information and sent to the user terminal of the first request information. By combining the software information and the hardware information, authentication server software can only be installed and operated on legal hardware and can not be operated on other hardware, and therefore intellectual property of vast authorization server software developers is completely protected. Numerous modules are not required to be installed on a client terminal due to an online software protecting method, and therefore installing, deployment and maintaining are easy.

The invention discloses a software protection method based on intermediate result compiling. The software protection method includes the following steps (1), software source codes are compiled to obtain an original object file (OBJ); (2), the original OBJ is analyzed to obtain partitioned data aiming at the original OBJ; (3), the analysis result of the step (2) is preprocessed; (4), system function call is concealed, redundant functions are inserted, and global character strings used for a system are encrypted; (5), deformation is performed for a common instruction; (6), the scattered data obtained through processing in the processes are recombined to form the OBJ, and then an executable file is generated through link of a linker. Confusion and protection at the instruction level for the OBJ are achieved, errors can be avoided, the confusion effect and the confusion quality are improved, and software is prevented from being illegally cracked or analyzed.

Embodiments of the present invention include a method of modifying a computer program to control and monitor usage, e.g., for software protection, by dividing the computer program code into protected and unprotected parts. According to some demonstrative embodiments of the invention, the protected part of the divided program may include logical operations and computations that influence resource-releasing instructions relating to resources used by the unprotected part of the program. The divided program may be indistinguishable to a user from the original version in terms of execution performance. Embodiments of the present invention include a method of profiling a computer program to collect statistics regarding resource consumption and related operations; analyzing the statistics to identify suitable operations; and generating code for a divided version of the computer program. Other features are described and claimed.

The present invention relation to a method and device for protecting a software program from unauthorized use, comprising a processor, a non-volatile memory, a content protection means, and a communication interface, wherein the non-volatile memory records and stores at least one functional fragment extracted from the said software program, wherein at least one transfer function is embedded into the remaining part of the software program for sending to the software protection device initial data and/or commands initiating execution of the extracted fragment to produce result data, and sending the result data to the programmable computer device, thus preventing hacking of the said software program. The software protection device can be implemented as an external or internal computer module.

A program (MC), which can be executed by a programmable circuit, is protected in the following manner. An instruction block (IB) is provided on the basis of at least a portion (MC-P) of the program. A protective code (DS) is generated that has a predefined relationship with the instruction block (IB). The instruction block (IB) is analyzed (ANL) so as to identify free ranges (FI) within the instruction block that are neutral with respect to an execution of the instruction block. The free ranges comprise at least one of the following types: bit ranges and value ranges. The free ranges that have been identified are used for embedding (SEB) the protective code (DS) within the instruction block (IB).

The invention discloses a dual-protection system and method for batteries. The dual-protection system comprises a hardware protection module, a software protection module, a drive module, a current sensing resistor and a protection switch, wherein the current sensing resistor is electrically connected with the negative electrode of a battery pack and then connected with the protection switch in series; the input end of the hardware protection module and the input end of the software protection module are electrically connected among the positive electrodes of all the batteries in the battery pack, the protection switch and the current sensing resistor, the output end of the hardware protection module and the output end of the software protection module are electrically connected with the input end of the drive module, and the output end of the drive module is electrically connected to the control end of the protection switch to control the protection switch to be turned off. The dual-protection system and method can improve the reliability of the battery pack and reduce the accident probability of the battery pack.

The invention discloses a temperature control method for a permanent magnet synchronous motor and intelligent power unit (IPU) system of a pure electric vehicle. A control chip of an intelligent power unit adopts a digital signal processor (DSP) or a micro control unit (MCU). Each path of input signals acquired by temperature sensors are transmitted to the DSP/MCU after passing through a temperature detection circuit, and the temperature signals are computed and processed to realize functions of performing temperature detection, processing and protection on the motor and IPU system. The method comprises hardware temperature detection and conversion and software protection processing, wherein a hardware method comprises the detection, processing, A/D conversion and the like of the stator temperature of a motor, the power module temperature of the IPU, power module radiator temperature, cooling fluid inlet and outlet temperature and power module printed circuit board (PCB) temperature signals; and a software method comprises software flow processing performed on the temperature signals according to a protocol policy by the DSP/MCU and a hybrid control unit (HCU).

The invention provides a safe and controlled remote update method for a software protection device, the method is as follows: control information of a function module update pack is arranged at the terminal of a server and a new function module is obtained; the new function module is encrypted after the control information and the new function module are calculated to obtain calibration information, or after the new function module is encrypted, the control information and the encrypted new function module are calculated to obtain the calibration information; and then the control information, the encrypted new function module and the calibration information are combined to form the function module update pack which is sent to the software protection device; the software protection device check the control information in the received function module update pack, the new function module is obtained after decrypting, the calibration information in the update pack is validated according to the control information and the new function module, and the own update can be performed through using the new function module if the validation is passed. The function module in the function module update pack of the safe and controlled remote update method for a software protection device is all cryptograph in the transmission process, thus the safe and controlled remote update for the software protection device is effectively realized.

A system and method in which the operating system of the user computer loads the software application and a DLL having a portion of the application execution code stored therein into memory is disclosed. At selected points during its execution, the software application calls the DLL to execute a portion of the application code that was saved into the DLL before delivery to the end user. Since this code is encrypted and the encryption key is stored in a hardware security device and not in the DLL or the software application, the application code portion cannot be executed without recovering the key.

The invention discloses a method for protecting software based on a virtual computer, which comprises the steps that: a high level programming language applied to compiling hidden components is defined; virtual computer specification is defined; a compiler of exclusive instruction set from the high level programming language to the virtual computer is realized; the virtual computer taking an interpreter as an execution engine is realized; the software is divided into open components and hidden components; the open components are added with a module to get the hardware ID information of the computer of users; source code of the virtual computer and the open components obtained in the steps are compiled into executable files; the hidden components are again realized through the high level programming language and complied into the code of the virtual computer as independent hidden component files. The invention has high performance of safe operation environment and little response delay between open and hidden components and greatly improves the experience of users. The invention provides a method for preventing software piracy effectively for software developers, which realizes on-line software issuing and decreases the cost of software greatly.

The invention discloses an IGBT overcurrent protection apparatus and method of a PFC circuit. The IGBT overcurrent protection apparatus comprises: a PWM control module; an input voltage detection module detecting an input voltage, setting a hardware protection voltage, comparing the input voltage with the hardware protection voltage, generating a hardware voltage protection signal and outputting the hardware voltage protection signal to the PWM control module; an output voltage detection module detecting an output voltage; a current detection module detecting an input current; a current overcurrent protection module setting a hardware protection current, comparing the input current with the hardware protection current, generating a first hardware current protection signal and a second hardware current protection signal and transmitting the second hardware current protection signal to the PWM control module, wherein the PWM control module outputs a PWMout signal according to the hardware voltage protection signal and the second hardware current protection signal; and a PFC control module separately connected with the above modules, receiving the input voltage, the input current, thefirst hardware current protection signal and the output voltage, setting a software protection current, outputting a PWM signal to the PWM control module according to various values, and controllingthe PWM control module to output the PWMout signal.

The invention discloses a software protecting method based on clock of a security device and a security device thereof. The method includes connecting to a terminal device to the security device, receiving the service instruction sent from protected software of the terminal device, protecting the protected software of the terminal device by the security device via the preset time protecting function. The security device includes an interface module and a control module. Thereby, the control module includes a communicating unit and a software protecting unit. The security device of the invention binds with functions such as time and date easily according to the time limit information which limits the time of using the security device and controls the start time and expiring time of using the security device accurately which provides safer service for protecting the software.

The invention discloses a work protection system for a DFB (distributed feed back) laser. A laser diode and a semiconductor refrigerator are arranged in the DFB laser; the work protection system comprises a constant-current protection system and a temperature-constant protection system, wherein the constant-current protection system comprises a constant-current voltage comparison circuit, a switching circuit and a constant-current drive circuit; the constant-temperature protection system comprises a temperature-constant voltage comparison circuit and a temperature-constant drive circuit. The work protection system for the DFB laser has the following benefits: the on/off of the constant-current drive circuit is controlled by arranging the constant-current voltage comparison circuit and the switching circuit, and the on/off of the constant-temperature drive circuit is controlled by arranging the temperature-constant voltage comparison circuit, so that hardware protection is provided for the DFB laser, and the hardware protection responses quickly and works stably; three types of sampling circuits are arranged for monitoring the work of the laser in real time, and the constant-current drive circuit and the constant-temperature drive circuit can be controlled remotely, so that software protection is provided for the DFB laser, and the software protection is convenient to operate.

The invention discloses a link method and a linker, which belong to the field of software security. The method comprises the following steps: scanning the objective program codes of software to be protected, wherein the codes are generated after the compiling of a compiler; determining the inserting point of the identification codes of an intelligent key facility, and inserting the identificationcodes in the objective program codes; creating a segment table and a symbol table according to scanning information, adding symbols respectively corresponding to identification code functions and exitfunctions in the symbol table, and using the functions to which the identification codes belong to identify the intelligent key facility; if successful, allowing the software to operate, and if fail,calling the exit functions and completing the operation; repositioning the objective program codes, writing the head information of a file, the repositioned objective program codes, the segment tableand the symbol table in an output file to obtain an executable file. The linker comprises a scanning module, an insertion module, a creation module and a repositioning module. The invention realizessoftware protection, simplifies and reduces the complexity and the difficulty of software protection.