47results about How to "Reduce the risk of being cracked" patented technology

The invention discloses a digital signature method, a digital signature system and a quantum key card. The digital signature system comprises quantum network service stations, signature client sides, authentication client sides and quantum key cards, wherein the quantum network service stations are configured on the network side, and the signature client sides and the authentication client sides are configured on the user side. The digital signature method includes that a true random number is generated on the network side and then stored in the corresponding quantum key card and on the network side respectively to form a corresponding user-side key; the quantum key card matching with the signature client side uses the stored user-side key to generate a signature file, the signature file is sent to the authentication client side via the signature client side, and the authentication client side sends the received signature file to the current quantum network service station, acquires the corresponding user-side key from the network side to perform signature authentication on the signature file and sends signature authentication results to the corresponding authentication client side. The digital signature method, the digital signature system and the quantum key card have the advantage that key seeds are stored in the quantum key cards and the quantum network service stations, so that the problems of access use and safety of quantum network terminals are solved.

The invention discloses a method and a device for signing a user program verifying signature of the user program. The method for signing the user program includes steps of acquiring ID (identity) of a CPU (central processing unit), computing the user program by SHA-256 hash operation to obtain a program digest, compiling a public key and a module generated through RSA (Ron Rivest,Adi Shamirh and Len Adleman) encryption algorithm into the user program; combining the ID of the CPU, the program digest and the length of the user program in sequence to form a data string; operating the data string by a private key corresponding to the public key and the module to obtain ciphertext; and loading the ciphertext into a check area of the CPU. By combining with the RSA algorithm and the SHA algorithm to process the user program and integrating with the ID of the CPU to be a part of the signature, the user program must be restarted by being strictly subjected to the signature verifying process matched with the signature, risk in brute force attack to the user program is greatly reduced, and the user program can be effectively protected from being tampered or stolen maliciously.

The invention provides a cipher character string generation method. The method comprises the following steps: prestoring multiple encryption algorithms; acquiring data to be encrypted in a data set S of cipher character strings to be generated; and by use of the encryption algorithms, performing encryption operation on the data to be encrypted so as to generate the cipher character strings. According to the embodiments of the invention, the cipher character strings are generated through arrangement of the multiple encryption algorithms, and the method and apparatus have the positive effects of reducing the risk of cracking the cipher character strings and improving the security of the cipher character string.

The invention provides a generation method and device of dynamic verification code pictures and a verification method and device of the dynamic verification code pictures in order to reduce the success rate of automatic identification through a machine. The generation method of the dynamic verification code pictures includes the steps that at least two frames of static verification code pictures are acquired, wherein in each frame of static verification code picture, a verification code is displayed after first display content and second display content are played; the static verification code pictures are played, and the dynamic verification code pictures are obtained, wherein in the playing process, first dynamic content is obtained according to the first display content, second dynamic content is obtained according to the second display content, and the first dynamic content and the second dynamic content contain different kinds of dynamic information. Through the method, the success rate of automatic identification through a machine can be lowered, the risk that verification codes are cracked is reduced, and the safety of a network is improved.

The invention discloses an AKA identity authentication system and method based on a symmetric key pool and a cross-relay. The AKA identity authentication system comprises a member participating in AKAidentity authentication, a relay and a server, wherein the member, the relay and the server share a group key pool; the member and the relay are further respectively provided with private key pools for generating authentication keys, and the member and the relay independently share the private key pools with the server; the member and the relay negotiate a corresponding pointer address in an AKAidentity authentication process, and generates a first negotiation key between the member and the relay in combination with the respective group key pools; the member and the server also share the corresponding pointer address in the AKA identity authentication process and generate a second negotiation key between the member and the server in combination with the respective authentication keys. Byadoption of the AKA identity authentication system and method disclosed by the invention, the security of communication can be further improved.

The invention relates to a key exchange method for automobile electronic control unit communication, which comprises the following steps that 1, an encryption object is selected, and a plurality of electronic control units are classified into a Master and a Slave; 2, a system is initialized, the Slave is accessed to the Master, and the Master checks whether a key parameter needs to be generated ornot; if so, a key parameter is generated, and simultaneously the key parameter is stored into safe storage areas of the Master and the Slave; if not, the originally generated key parameters are used;3, a secret key is generated in real time, after the vehicle is ignited each time, the Master and the Slave respectively generate a random number, and the secret key is generated according to secretkey parameters and the random numbers; and step 4, data encryption: the Master encrypts the communication data needing to be sent to the Slave through the secret key, and the Slave encrypts the communication data needing to be sent to the Master through the secret key. The secret key exchange method for automobile electronic control unit communication is low in encryption cost, does not need to establish a special server to store the secret key, is low in secret key leakage risk, and has very high safety.

Embodiments of the invention provide an encryption method, a decryption method and electronic equipment. The method comprises steps of acquiring a public key, a plaintext and a first bit string of a preset length through first electronic equipment, wherein the public key comprises the only defect trapdoor function; acquiring a key pair of a one-time signature scheme by the first electronic equipment, wherein the public pair comprises a verification secret key and a signature secret key corresponding to the verification secret key; acquiring a middle cryptograph set according to the only defect trapdoor function, the first bit string of the preset length, the plaintext and the verification secret key; signing the middle cryptograph set by the first electronic equipment according to the signature secret key, and acquiring a signature of the middle cryptograph set; and forming a final cryptograph by combing the verification secret key, the middle cryptograph set and the signature of the middle cryptograph set, and outputting the final cryptograph. Therefore, anti-selection cryptograph attack is achieved.

The invention relates to an anti-shearing reinforcement device and method for a concrete box girder web. In order to solve the problem that in existing engineering technologies, the concrete box girder web has cracking inclined cracks and insufficient anti-shearing bearing capacity, an external vertical prestressing tendon reinforcement device and method are provided. The device comprises groove-shaped steel, L-shaped steel, vertical prestressing tendons, wedge-shaped steel cushion blocks and an anti-corrosion coating at the outer side of the web. The groove-shaped steel is horizontally fixedto the junction of the upper end of the web and a top plate in the girder length direction. The L-shaped steel (6) is horizontally fixed to the lower end of the web in the girder length direction andis parallel to the groove-shaped steel (5). The vertical prestressing tendons are vertically mounted on the groove-shaped steel and the L-shaped steel, and it is ensured that the vertical prestressingtendons are parallel to the plane of the web. According to the anti-shearing reinforcement device and method, the web is connected with the top plate and a bottom plate through finish rolling twistedsteel, the force transmission path is definite, the risk that web concrete is pulled broken is reduced, and meanwhile, midspan deformation is reduced; the problem of insufficient main tensile stressof the web concrete is effectively solved, and the situations of continuous extension of the inclined cracks of the web or new inclined cracks are prevented.

The invention discloses a safe discrete storage method for sensitive data. A client side, a processing server side and N storage server sides are included. The method comprises the following steps: firstly, a client sends sensitive data to a processing server, the processing server randomly generates a Key with the length of N bits and and encrypts the sensitive data by using the Key; the processing server splits the encrypted data into N parts of data blocks, and splices each bit of the Key to the tail parts of the data blocks in sequence; the processing server side sequentially stores the Ndata blocks into a storage server, generates an index, stores the index into the processing server side, and returns the unique ID of the index to the client side; the client side obtains the sensitive data from the processing server side, the processing server side requests the data blocks from the storage server according to the index ID, the data blocks are divided, combined and decrypted and then returned to the client side, the storage safety of the sensitive data is improved, and the leakage risk in the transmission process is reduced.

The invention discloses a dynamic password door opening method and a door lock, wherein the dynamic password door opening method comprises the following steps that a password generation module generates a first unlocking password according to an additional code; a two-dimensional code generation module generates a two-dimensional code comprising a main ID and a timestamp; a display screen receivesand displays the two-dimensional code; a mobile terminal scans the two-dimensional code and sends the main ID and the timestamp to a server side, and the server side generates a second unlocking password according to the additional code; the server side verifies the identity information of the mobile terminal, and sends a second unlocking password to the mobile terminal if the verification passes; and a user inputs the second unlocking password, and when the first unlocking password is matched with the second unlocking password, a door lock module is opened.

The embodiment of the invention discloses an express cabinet door lock opening method and device and an express cabinet. The express cabinet comprises a Bluetooth module and a USB interface. The express cabinet door lock opening method comprises the following steps: when a mobile power source is inserted into the USB interface, the Bluetooth module is controlled to be started; an unlocking instruction of a mobile terminal is acquired through the Bluetooth module; and a door lock corresponding to the unlocking instruction is controlled to be opened. According to the technical scheme provided bythe embodiment of the invention, the Bluetooth module and the USB interface are additionally arranged in the express cabinet, so that when the express cabinet breaks down, the mobile terminal can send an unlocking instruction to the express cabinet through the Bluetooth module, and then the operation and maintenance processing efficiency of the express cabinet can be improved.

The invention relates to an encryption method, a decryption method and a system, which are applied to software product burning, and the method comprises the following steps: obtaining a secret key, and sending the secret key to a main control chip of a product; and encrypting a software file according to the key, and generating an encrypted file with a first identifier. The invention has the beneficial effects that the software file is encrypted, so that the security of the file is improved, the cracking risk is greatly reduced, and the software file can be effectively prevented from being monitored and cracked.

The invention discloses a data processing method and an electronic device. The electronic device comprises a display unit which is provided with a display area. The data processing method includes: detecting a first operation in the display area under the first state of the electronic device, starting a data acquisition unit when the first operation meets a first preset rule, and performing data acquisition; recording the acquired data and transmitting the acquired data according to a second preset rule.

The invention discloses an expansion card, an encryption card, a mobile terminal, communication data receiving and transmitting method and equipment. The expansion card is used for being electrically connected with a receiving and transmitting unit of the mobile terminal and an SIM card respectively. First encryption algorithm is adopted to perform algorithm processing on first data to obtain a first cryptographic key; the first cryptographic key is transmitted to the receiving and transmitting unit; and the first data comprises at least one of a cryptographic key Kc obtained from the SIM card and a response code SRES and a random number RAND obtained from the receiving and transmitting unit. The mobile terminal comprises the receiving and transmitting unit, the SIM card and the expansion card, wherein the expansion card is electrically connected with the receiving and transmitting unit and the SIM card respectively. The invention is beneficial to improving the transmission security of communication data between the mobile terminal and a base station.

The invention discloses a class AKA identity authentication system and method based on a symmetric secret key pool and a cross relay. An AKA identity authentication system comprises a member participating in AKA identity authentication, a relay and a server. The system is characterized in that the member, the relay and the server share a group secret key pool; the member and the relay have privatesecret key pools used for generating authentication secret keys, and the member and the relay independently share the private secret key pools with the server; the member and the relay share a corresponding pointer address in an AKA identity authentication process, and then combine the respective group secret key pool to generate a first negotiation secret key between the member and the relay; and the member and the server also share the corresponding pointer address in the AKA identity authentication process, and combine the respective authentication secret key to generate a second negotiation secret key between the member and the server. The system and the method can be used to further increase the safety of communication.

The invention discloses a symmetrical key pool and relay communication-based quasi authentication and key agreement (AKA) identity authentication system and method. The AKA identity authentication system comprises a member involving in AKA identity authentication, a repeater and a server, wherein the member, the repeater and the server share a group key pool, in an AKA identity authentication process, the member and the repeater use key seeds from the group key pool separately and combine random number parameters to calculate and obtain a negotiation key between the member and the repeater, the random number parameter is acquired correspondingly in the group key pool by using a pointer address A, in the AKA identity authentication process, the repeater acquires the pointer address A through the server, and the member acquires, through the repeater, a parameter generating the pointer address A from the server, and generates the pointer address A through the parameter. Through adoption of the symmetrical key pool and relay communication-based quasi AKA identity authentication system and method, communication is safer.