139results about How to "High encryption strength" patented technology

An encryption technique allowing use of classic Y-00 scheme performed using classic physical random numbers instead of quantum fluctuation in electrical communication and data storage in recording media, including a first modulation step for multilevel-modulating input data by associating with specific state pairs determined by physical random numbers, a second modulation step for outputting the output of the first step by irregularly associating with another signal by physical random numbers, and a channel coding step for channel-coding the output of the second step into desired codeword and outputting it as encrypted data, wherein the decoded signal obtained by channel-decoding the encrypted data can be discriminated which of specific state pairs the signal corresponds to and demodulated into the input data, and output by the first modulation by state pairs other than the specific state pairs and the second modulation by a physical random number different from the physical random number.

A data compression method, to generate a compressed data stream from an uncompressed data stream, enhances the secrecy of data compression. A scramble value is appended to the beginning of the uncompressed data stream, and a dynamic variable-length encoding method is used to perform data compression. Compressed data with high randomness can be generated, and data for processing can easily be randomized. That is, there is no need to share a common initial value on the generating side and on the restoring side, processing is simple, and the processing time can be shortened.

The invention relates to an authorized access method for a browser client and a server. The method comprises following steps of (1), login verification; generating a dynamic password secret key, server time and dynamic password secret key expiration time by a server if the login verification is successful; storing in client cache; executing a step (2); otherwise, finishing; (2) judging whether the dynamic password secret key expiration time in the client cache arrives or not, if the expiration time arrives, executing a step (3); otherwise, executing a step (4); (3), switching the dynamic password secret key; obtaining new dynamic password secret key, server time and dynamic password secret key expiration time if the dynamic password secret key is switched successfully; correspondingly updating the client cache; executing the step (4); otherwise, finishing; (4), generating a dynamic password through adoption of the dynamic password secret key and the server time in the client cache of a browser; carrying out authorized access to the server; and returning to the step (2). Compared with the prior art, the method has the advantages that the authorized access process is safe and reliable and is not liable to be cracked.

This invention discloses a data ciphering and deciphering method which randomly selects a random cryptographic key to replace positions to clear-text data, then dispatches a user cryptographic key to cipher the random cryptographic keys and the data layer by layer and outputs the cipher-text. Deciphering method: the random cryptographic key is recovered first, then the clear-text data position replaced vector is got and clear-text data are recovered by dispatching suitable user cryptographic key to output the clear-text finally. A device includes a cipher/decipher processor, clear-text cipher-text buffer memory for storing the clear-text cipher-text input data and inputting them to a processor, a memory for staring various data and inputting them to a processor, an output device for outputting the cipher-text.

An encryption technique having a greater encryption strength than conventional mathematical encryption by using classic physical random numbers etc., including a step for modulating one-bit input data into a coded signal by associating it with a discrete value of at least two bits determined by pseudo random numbers and physical random numbers and a step for channel-coding and outputting the coded signal, wherein 1) the coded signal can be demodulated into the input data by the pseudo random number, 2) the number of sets of input data, pseudo random number, and physical random number corresponding to a particular discrete value is equal for two values of the input data, and 3) the number of sets of pseudo random number and physical random number corresponding to respective values of the input data and respective values of the discrete value is equally associated also with any set of them.

Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, transmission/reception system, and communication system are provided in the invention. The encryption technique includes a first modulation step for multilevel-modulating input data by associating with specific state pairs determined by physical random numbers, a second modulation step for outputting the output of the first step by irregularly associating with another signal by physical random numbers, and a channel coding step for channel-coding the output of the second step into desired codeword and outputting it as encrypted data, wherein the decoded signal obtained by channel-decoding the encrypted data can be discriminated which of specific state pairs the signal corresponds to and demodulated into the input data, and output by the first modulation by state pairs other than the specific state pairs and the second modulation by a physical random number different from the physical random number.

The invention discloses a dynamic password generating method and system. The method comprises the steps that various dynamic heterogeneous messages are spliced to form a clear text S, and the clear text S is digitally signed for N times to obtain an encrypted byte stream S2; one byte is selected from the S2 and is converted into a numerical value a; remainder operation is executed: i=a%*length of dynamic password character library; the ith character is selected from the dynamic password character library, and the position of a dynamic password is covered; and the dynamic password generating process is repeated until the length of the dynamic password meets the requirement. The system comprises a clear text splicing module, a signing module, a converting module, a dynamic password character library, a remainder module, a password splicing module and a distinguishing module. The dynamic password generating method provided by the invention integrates the advantages of a random number algorithm and a digital signature algorithm, so that the dynamic passwords obtained in the same transaction by the same operator in different time are definitely different; and the dynamic password is generated only in use, the recurrence rate is very low, and the security is higher.

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 discloses a realizing method of an automobile key system with a configurable safety strategy. The realizing method comprises the following steps that a vehicle-mounted controller sends aconnecting request to an instruction server through a preset encryption key; the instruction server verifies the identity of the vehicle-mounted controller and sends an effective encryption key to replace the preset encryption key; the instruction server communicates with the vehicle-mounted controller through the effective encryption key; the safety strategy is configured to trigger updating andreplacing of the effective encryption key; and a user terminal obtains authorization through the instruction server and builds connection with the vehicle-mounted controller through near field communication. The identity of the vehicle-mounted controller is authenticated by multiple factors, a dynamic secret key algorithm is adopted, a secret key is replaced regularly, and the encryption strengthis high; the instruction server is used for distributing encrypted control instructions, and through the near field communication technology, a mobile phone and other types of digital mobile terminals can be a carrier of an automobile key, a solid physical automobile key does not need to be carried along for driving an automobile, and automobile authorization and use are more convenient.

The utility model relates to data encryption technology, in particular to an encrypted mobile memory device and the data access method. The utility model discloses a mobile memory device that adopts hardware encryption and the data access method to strengthen the security of storing data of mobile memory devices. The technical proposal of the utility model is that: the encrypted mobile memory device comprises a USB interface, a drive circuit, a controller, a memory and an encryption chip; the USB interface, the drive circuit, the controller and the memory are connected sequentially; the encryption chip is connected with the controller; the encryption chip is used for the encryption of stored data and the decryption of read data. The utility model also discloses the data access method of the device. The utility model has the advantages that: special chip hardware encryption is adopted; the encryption algorithm is authentic and reliable; the encryption intensity is high and the secrecy is strong. Decryption data cannot be gotten even the mobile memory device is taken apart and the memory is taken out if the device is not decrypted by the encryption chip.

Different Keys including Key1, Key2, Key3... are utilized for each packet or each several packets. Encrypted cryptograph is encrypted again by using a changed cipher key. Or, arranged in groups, cryptograph is encrypted repeatedly for multiple times that is to say: encrypting each packet for multiple times, then encrypting next packet and whole plaintext, after completion, changing a Key and carrying out encryption once again, thus, repeating the above procedure for multiple times. The invention raises encryption intensity, and makes encryption device simple. Encryption method with encryption intensity being higher than 2n can be designed by using the invention. The disclosed method is suitable to all case of encryption by using grouped ciphers, including encryptions for stored digital quantity, transmitted digital signals, or real-time system.

The invention discloses an instantaneous consumption application processing method for an intelligent card. The instantaneous consumption application processing method comprises the steps of: consumption initialization: a terminal safety control module is used for calculating a temporary session key and a consumption ciphertext according to the random number taking response data obtained by a terminal from a card and a preset encryption rule; consumption instruction checking: the card receives the instantaneous consumption instruction sent from the terminal, and then checks the trading key data of the instantaneous consumption instruction and verifying the consumption ciphertext; and consumption instruction processing: after the trading key data checking and consumption ciphertext validation are passed, the consumption is processed. The invention also discloses a corresponding instantaneous consumption processing system for the intelligent card. The instantaneous consumption application processing method and system for the intelligent card can be used for increasing the instantaneous trading speed and ensuring the safety, reliability and stability of trading simultaneously, and meet the requirements of various high-speed consumption occasions.

The invention discloses an encryption method in data transfer of an electric power system, which comprises the following steps: when a transmitting end transmits data to an opposite side, dividing the data for generating a plurality of data blocks; acquiring the voiceprint characteristic and other biological characteristic of a transmitter and quantifying to first biological characteristic data, dividing the first biological characteristic data for generating a plurality of first biological characteristic data blocks; integrating the first biological characteristic data with the data blocks and encrypting for obtaining a first cryptograph, wherein a plurality of intermediate detectors are arranged between the transmitting end and the receiving end, the intermediate detectors are used for performing different number of times of encryption according to different transmission speeds of the first cryptograph, thereby finally obtaining a plurality of different final cryptographs for received by the receiving end, wherein related data are recorded in encryption for providing reference data for decryption; performing decryption by the receiving end for obtaining second biological characteristic data and a decrypted plaintext; and comparing the second biological characteristic data with preset biological characteristic data for determining whether the plaintext is reliable.

The invention discloses a method for generating anti-counterfeiting code information. The method comprises the following steps: step one, creating a value color table and an image library; step two, carrying out invoking by an external system by parameters including an internal code, Url and a prefix and starting an anti-counterfeiting information generation process; step three, combining the Url, prefix and internal code, calculating a check code, combining the Url, prefix and internal code with the check code, and forming a two-dimensional code; step four, generating an anti-counterfeiting numerical value information list; step five, in the two-dimensional code obtained in the step three, carrying out image index calculation, carrying out delivery processing on the total number of anti-counterfeiting images in the image library based on the calculation result to obtain an image index, and acquiring a corresponding anti-counterfeiting image from the image library; and step six, combining the two-dimensional code obtained in the step three, the anti-counterfeiting numerical value information list obtained in the step four and the anti-counterfeiting image obtained in the step five to generate anti-counterfeiting code information. With the method disclosed by the invention, invoking becomes simple; and the data storage pressure is low.

The invention provides an anti-counterfeit code generating device. The anti-counterfeit code generating device is characterized by comprising a picture storage part, an input display part, a code acquiring part, a secret key generating part, an AES (advanced encryption standard) acquiring and encrypting part, an AES cutting part, a DES (data encryption standard) acquiring and encrypting part, a DES cutting part, an IDEA (international data encryption algorithm) acquiring and encrypting part and an IDEA intercepting part, wherein the code acquiring part is used for acquiring input product information, and encoding according to a certain predetermined rule so as to generate corresponding product serial numbers. The anti-counterfeit code generating device provided by the invention firstly encrypts a product serial number by an AES algorithm, and then divides the encrypted result obtained by the AES algorithm into two parts, wherein one part is encrypted by a DES algorithm so as to obtain a logistic anti-counterfeit complete code, and a logistic anti-counterfeit application code is intercepted from the logistic anti-counterfeit complete code; the other part is encrypted by an IDEA algorithm so as to obtain a product anti-counterfeit complete code, and a product anti-counterfeit application code is intercepted from the product anti-counterfeit complete code, so that compared with the prior art, the anti-counterfeit code generating device has the characteristics of high encryption intensity and difficulty in code cracking.