33results about How to "Encryption guaranteed" patented technology

An algorithm for encrypting an image on the basis of chaotic mapping and series changing comprises the following steps that: the pixel value of an image and a two-dimensional matrix which has the same size with the image and is formed by a Logistic chaotic sequence are subjected to binary bitwise XOR processing; the Logistic chaotic sequence is subjected to the mapping transformation so that two two-dimensional matrixes are formed; a row matrix is multiplied by an image matrix and a line matrix in sequence, so that location chaotic operation is finished; and the original image information cannot be visually sensed from the obtained encrypted image and can be completely hidden. By the method, the encrypted imaged can resist the attack from gray value statistic analysis and general interference attack from shear, noise and gauss lowpass filtering.

The invention relates to a data encryption method and a system. The data encryption method is characterized in that raw data is decomposed into at least two parts of data according to a preset function relationship. A data encryption storage method is characterized in that the preset function relationship is decomposed into at least parts of data, and the disassembled data is respectively stored in different memories. A data encryption transmission method is characterized in that a sending end decomposes raw data A into at least two parts according to the preset function relationship; the two parts are sent to a data receiving end via different data transmitting channels; and the data receiving end respectively receives the data, and combines and reduces the data into the raw data A according to the corresponding function relationship. As various combination modes are provided, the decryption difficulty is high after encryption, and the original encryption index is enhanced by times to guarantee the encryption effect of numbers. Only disassembly is required, and therefore, good encryption effect is achieved. In addition, the data encryption method has the advantages of low calculation amount and high encryption and decryption efficiency.

The invention provides a method for encrypting data and a method for transmitting encrypted data. The method for encrypting data comprises the following steps of: firstly, randomly intercepting data w' with a preset length k from transmission data w; generating a random number gamma by taking the data w' as a seed, and calculating a secret key and the number p of data domains by taking r as a seed, wherein p is more than or equal to 1 and less than C, and C is a constant; and randomly calculating the length qi and starting point ai of p data domains Fi, intercepting data from the transmission data w by taking qi and ai as parameters to generate a data domain Fi, wherein i is no less than 1 and no more than p; generating a public key Ei sequence and a private key Ri sequence by taking the data domain Fi as the parameter; and finally, circularly encoding w by the public key Ei to obtain an encrypted result Z. The invention further provides a device for encrypting data, a method for transmitting the encrypted data and a transmission device of the encrypted data.

The invention provides a selective satellite image compression encryption method based on Chacha20 and CCSDS. Aiming the characteristics of a satellite image, the method comprises the steps: firstly carrying out the three-stage two-dimensional discrete wavelet transformation through employing a 9/7 integral wavelet in a CCSDS image compression algorithm, and obtaining a DC coefficient and an AC coefficient after transformation; secondly generating a ChaCha20 initial byte stream through the head information in a coding item and a 512-bit initial secret key and ChaCha20 Hash; thirdly carrying out the summation and modular operation of a chaos initial secret key and a plaintext image normalization value through the byte stream generated by PWLCM (Piecewise Linear Chaotic Map) and the ChaCha20 initial byte stream, and generating a ChaCha20 byte stream; fourthly carrying out the XOR encryption of the ChaCha20 byte stream and the DC coefficient and AC coefficient (the father and son coefficients in each block) and all AC coefficient symbol bites; finally enabling the encrypted DC and AC coefficients to be coded and compressed, and completing the compression and encryption of the satellite image. The generation of the ChaCha20 byte stream is related with the to-be-encrypted satellite image and a compression coding parameter, thereby improving the encryption adaptability.

The embodiment of the invention provides an image encryption method and device, electronic equipment and a readable storage medium, and belongs to the technical field of image processing. The image encryption method comprises the following steps: determining a target area where to-be-encrypted content in a to-be-encrypted original image is located; performing mask processing on the target area, and determining mask information of the target area; adding adversarial noise and auxiliary noise to the original image, and generating a noise image; and performing fusion processing on the original image, the noise image and the mask information to generate a target encrypted image.

The invention discloses a retrieval method for encrypted information evidence storage based on a block chain. The retrieval method comprises the following steps: encrypting a storage position of certificate information by adopting an asymmetric encryption technology; adding the encrypted storage location information to the voucher information; calculating a hash value of the voucher information by adopting an SHA256 hash function; recording the voucher information and the corresponding hash value into the smart contract on the chain; for the chained credit voucher, creating a hash retrieval tree in the smart contract according to the hash value of the voucher information, wherein each node on the hash retrieval tree correspondingly stores one piece of voucher information; and according to the Hash value, obtaining the voucher information, verifying the voucher information, and decrypting the verified storage position information. The retrieval method and system for encrypted information evidence based on the block chain and the electronic equipment have the advantages of high confidentiality, quick data retrieval and the like.

The invention provides a method for encrypting data and a transmission device of encrypted data. The method for encrypting data includes that first, data W' with preset length k is intercepted randomly from transmitting data W; the data W' is used as a seed, a random number r is generated, the r is used as a seed to calculate the quantity p of secret keys at random, and p belongs to [1,C), wherein C is a constant; then the data W' is used as a parameter to generate a public key Ei and a private key Ri, and 1<=i<=p; and finally the public key Ei encodes W in cycling mode to obtain an encryption result Z. The invention further provides a device for encrypting the data, a transmission method of the encrypted data and the transmission device of the encrypted data.

The invention discloses a digital image encryption method, decryption method and system based on a chaotic system, and belongs to the field of chaotic image encryption, and the encryption method comprises the steps: taking a one-dimensional chaotic mapping as a seed mapping, introducing a multiplication operator and a modular operator, constructing a strong dynamic chaotic mapping, initializing a control parameter of strong dynamic chaotic mapping by using the hash value of the digital image to be encrypted and the encryption key; iterating the strong dynamic chaotic mapping for multiple times, extracting bits with a preset length from a chaotic state value obtained by each iteration to form a corresponding pseudo-random sequence, and diffusing image pixels of the digital image to be encrypted by using the pseudo-random sequence; and performing multiple iterations on the strong dynamic chaotic mapping again, converting a chaotic state value obtained by each iteration into an integer value in a set interval until a set number of different integer values are obtained, and performing scrambling operation on image pixels after diffusion processing to obtain a final encrypted image. And the digital image is encrypted safely and effectively.

The invention discloses a method for automatically generating codes for the name of components of a fan system and its system and application; it belongs to the field of fan control. The fan system comprises several wind turbines. The auto-coding method includes: collecting the identification information of the said part; comparing the identification information of the part against the coding database and calling the code in the database corresponding to each piece of information in the said identification information; connecting each called code to form a unique coding sequence for the part name; the unique coding sequence is used to replace the part name in the drawings, in the master programming and/or in the SCADA display to the outside. The special coding management is used for all components of the wind power plant that has proposed the invention, which ensures that any error in the process can be traced back to its source; because of the uniqueness of the code, the program, theelectrical drawings and the like, in which the code is used replacing the part name, are all unique, thus ensuring the safety of the whole system.

The invention relates to the technical field of data transmission, in particular to a base-station-like energy supply encryption method based on RFID passive transmission, which comprises the following steps: a launching tower silently and continuously receives commands of a reader/receiving end in a local area; when a Query command sent by the reader/receiving end is received, the launching tower starts to send a continuous wave with encrypted information to the tag for encryption and reflection communication of the tag; the reader receives the encrypted information of the reflected wave with the continuous wave sent by the launching tower from the label, and performs corresponding decoding at a receiving end; by additionally arranging the launching tower, energy supply is guaranteed, and meanwhile the encryption effect is guaranteed; and the transmission stability and encryption requirements are improved.

The embodiment of the invention discloses a Bluetooth communication system, and the system comprises at least two Bluetooth communication devices, and at least two Bluetooth communication devices are arranged according to a preset sorting rule. Each Bluetooth communication device is used for forming a new information acquisition message after adding the device information corresponding to the Bluetooth communication device to the received information acquisition message, and transmitting the information acquisition message to a target device as a source device; wherein the received information acquisition message is sent by a sending end gateway or is sent by the Bluetooth communication device serving as the source device corresponding to the information acquisition message; the target device is a receiving end gateway or a Bluetooth communication device satisfying a set transmission strategy. According to the Bluetooth communication system provided by the embodiment of the invention, a transmission path can be ensured not to be interrupted when a link link is lost in a transmission process, and a network storm cannot be generated in a local area network due to the fact that a plurality of Bluetooth communication modules report messages at the same time.

The invention discloses an implementation method for memory data encryption protection. According to the method, a memory needs to open up a user configuration region, configure random seeds and set arandom sequence module first; then original data is processed through the random sequence module, so that the saving address of the original data in the memory is changed into a random address; and the original data is processed through the random sequence module, so that the original data is changed into random data. Through the method, the purpose of high encryption protection of the memory data is achieved, the security of user data is improved, the reliability of a chip is improved, and meanwhile the scheme is easy and convenient to implement and small in area power consumption.

The invention relates to the technical field of communication security, and discloses an anti-collision interruptible recovery voice secret transmission method, device and system, and the method comprises the steps: carrying out grading of a user terminal, employing an identity secret key to read an identifier, obtaining a transmission secret key through the identifier, carrying out transmission of a session secret key through the transmission secret key, and establishing an encrypted session through the session key. The device comprises a user terminal, a server and a background database, thesystem comprises one or more processors, a storage device and an anti-collision interruptible recovery voice secret transmission device. Conflict processing of multiple voice communication requests can be achieved, voice communication can be conveniently and reliably kept secret, and meanwhile, when the session is accidentally interrupted, effective unification of confidentiality recovery, data two-party identification and data confidential transmission can be realized, so that the confidential data is prevented from being maliciously eavesdropped or counterfeited, and the method has a relatively good practical value.

The invention relates to the technical field of laboratory management, in particular to an intelligent system for laboratory management of PCR inspection records. The system includes a central processing unit, the central processing unit is arranged in a laboratory management center; the central processing unit is electrically connected with a laboratory terminal; the laboratory terminal is electrically connected with a PCR experiment module; wherein the central processing unit is electrically connected with a data extraction module, the data extraction module is electrically connected with anaudit passing module, the audit passing module is electrically connected with an authority authentication module, the authority authentication module is electrically connected with a user query module, the laboratory terminal is electrically connected with a time recording module, and the time recording module is electrically connected with the data extraction module. The intelligent system for laboratory management of PCR inspection records is convenient to use and operate, orderly proceeding of experiments and real-time display of experiment data can be guaranteed due to the existence of the PCR experiment module, and meanwhile, the system can guarantee the encryption of the experiment data and orderly classified storage of the data.

The invention discloses a transaction information storage and financial storage method based on traditional data and a block chain, which separates data in a transaction system and separately stores the data according to related software security and a data level protection system. According to the invention, data in a transaction system is separated, and the data is separately stored according to related software security and a data level protection system. The high concurrency performance during transaction is ensured, and the encryption during data storage and the security of a financial system are also ensured.

The invention discloses a data encryption system for a block chain, and the system is characterized in that the output end of a first plaintext unit is electrically connected with the input end of anAES encryption unit, the output end of a first AES key unit is electrically connected with the input end of the AES encryption unit, the output end of the AES encryption unit is electrically connectedwith the input end of a first ciphertext unit, the output end of the RSA encryption unit is electrically connected with the input end of the first ciphertext unit, the output end of the first plaintext unit is electrically connected with the input end of the first DS5 abstract unit, and the output end of the first DS5 abstract unit is electrically connected with the input end of the RSA encryption abstract unit. The invention relates to the technical field of data encryption. According to the data encryption system for the block chain, the problem that when traditional data is uploaded, single encryption protection is conducted on the data, but in the method, when the identity of a data sending party or a data receiving party is pretended or forged by others to destroy encryption of the data, the data can be tampered or deleted or lost in the transmission process is solved.

The invention relates to underwater communication equipment with encryption and decryption capabilities, a transmitter and a receiver. The underwater communication equipment comprises a transmitting unit and a receiving unit, and the transmitting unit comprises a first A/D conversion module, a cepstrum encryption module, a modulation module, a first D/A conversion module and a transmitting transducer which are connected in sequence; and the receiving unit comprises a receiving transducer, a signal conditioning circuit, a second A/D conversion module, a demodulation circuit, a cepstrum decryption module and a second D/A conversion module which are connected in sequence. According to the invention, underwater analog communication encryption can be effectively realized.

The invention discloses a data tampering prevention blockchain uplink method, and the method comprises the following steps that S1, an uplink hardware system and a blockchain node carry out identity mutual verification, and initialized identity authentication is completed; S2, the uplink hardware system obtains the key data from the service equipment through the data acquisition hardware interface, and performs identity signature and encryption on the key data; S3, the uplink hardware system obtains the associated data from the communication device through the near field communication module, and performs identity signature and encryption on the associated data; S4, the uplink hardware system packages the key data and the associated data, performs identity signature and encryption on the packaged data, and sends the packaged data to the block chain node to complete data uplink. According to the method disclosed by the invention, the key data is ensured to pass through the verification and protection mechanism of the uplink hardware system before being uplink, and is directly uplink on the block chain node, so that the risk that the data is maliciously modified before being uplink through other service platforms is avoided, and the integrity and encryption of the uplink data are ensured.

The invention belongs to the technical field of information security, in particular to an information security management method for the Internet of Things based on a combined encryption algorithm, the invention also provides an information security management system of the internet of things based on a combined encryption algorithm; the cryptographic matrix encryption method comprises the following steps: if the first element M1 and the second element M2 are in the same row, the corresponding first element O1 and the second element O2 are letters adjacent to the right of the first element M1and the second element M2, respectively.As that exist encryption method is relatively simple, when the password is attacked by force, the encryption key can be decrypted quickly by exhausting the limited number of times directly, which leads to the problem of poor information security. The invention has the advantages of enhancing the information security intensity, facilitating the memory and easy storage, ensuring the integrity of ciphertext, and ensuring the flexibility of encryption.