50results about How to "Decryption implementation" patented technology

The application discloses dynamic-link library file encryption, decryption methods and devices. The encryption method comprises the following steps: receiving a dynamic-link library file to be processed as well as starting and stopping positions of a user-specified code to be encrypted in a code section of the dynamic-link library file; according to the starting and stopping positions, finding the code to be encrypted in the code section and encrypting the code to be encrypted by using a preset encryption algorithm so as to obtain an encrypted code; adding a target section in the dynamic-link library file, storing the starting and stopping positions of the encrypted code and a decryption algorithm corresponding to the encryption algorithm in the target section and hiding the target section; and adding a pointer pointing to the target section in an initialization section of the dynamic-link library file so as to carrying out the decryption algorithm of the target section through the pointer in an initialization process of the dynamic-link library file to decrypt the encrypted code. The encryption method provided by the application can encrypt the user-specified code and the encryption mode is more diversified.

Described is an electronic mail messaging system in which a plurality of user computers are connected to a mail registration server via the Internet. The mail registration server stores plural sets of decryption data, each set being required to decrypt a corresponding encrypted electronic mail message. Following receipt of an encrypted electronic mail message, a user computer communicates with the mailed registration server to effect decryption of the encrypted electronic mail message using the corresponding decryption data stored by the mail registration server. In this way, the accessing of the electronic mail message can be monitored by the mail registration server.

The present invention provides a method of encrypting, decoding and rewriting the external data memorizer, the encrypting method includes: a microcontroller processes code for the address and data to be written, writing the coded data in to the coded address; the decoding method includes the microcontroller coding the address needed to be read, reading data of the address according the coded address, and decoding the read data; the rewriting method includes the microcontroller extracting the address and data needed to be written according to the rewriting protocol, and coding the address and data, writing the coded data in the coded address. The encryption effectively prevents the data of the external data memorizer from incorrect rewrite, the encrypting method decodes the coded data, ensuring the printer recognize the data, the rewriting method effectively rewrites the external data memorizer, ensuring the chip setting with the external data memorizer circularly use.

The embodiment of the invention provides an encryption and decryption method, device and system, aiming to at least solve the problem that the verification between initiating end equipment and response end equipment cannot be performed under an existing AES-SIV mechanism in the case that the initiating end equipment does not know an MAC address of the response end equipment in advance. The methodincludes the following steps: enabling first equipment to acquire a first public key of second equipment; generating a first key and a first public key hash value at least according to the first public key of the second equipment; generating a first vector at least according to a preset MAC address and an MAC address of the first equipment; encrypting a first plaintext at least according to the first key and the first vector to generate a first ciphertext; sending a first message to the second equipment, or sending a second message to third equipment, and enabling the third equipment to send athird message to the second equipment, wherein the first message or the second message or the third message at least includes the first ciphertext, the first public key hash value and a first publickey of the first equipment; or, the scheme of the invention is applicable to the field of communication.

The invention discloses a portrait biological characteristic privacy protection and decryption method. The method comprises the following steps: constructing and training a portrait encryption and keygeneration network model, extracting portraits and corresponding identity information as input of the network model according to annotation information of a face database, and training a designed network by utilizing constructed data to finally obtain network model weights; actual portrait encryption and key storage: performing encryption and key generation on the actually acquired portrait by using the network model, and separately storing the encrypted portrait and the key; and decrypting the encrypted portrait, and cooperatively processing a decryption task of the user by the cloud serveraccording to a decryption demand of the user side. According to the method, a deep learning network technology is applied to portrait encryption to generate encrypted portraits with similar visual effects; the encrypted portrait and the secret key are stored separately, and the user is assisted to decode the portrait in a cloud cooperative processing mode, so that the possibility of information leakage can be reduced, and rapid decryption of the user is realized.

The present invention discloses a method for decrypting and encrypting data by a Gstreamer. The method comprises a step of creating an independent data collection module in a pipeline, integrating the independent data collection module into a source element, collecting encrypted data through the data collection module, transmitting the collected encrypted data into the queue of the source element, and pushing the encrypted data to a decrypting element, a step of decrypting the encrypted data by the decrypting element, and pushing the decrypted data to a decoding element, and a step of decoding the decrypted data by the decoding element so as to play the decoded data. The invention also discloses a corresponding device for decrypting and encrypting data by a Gstreamer. According to the method and the device, the downloaded encrypted data can be normally played in the pipeline, the decryption of the encrypted data is realized, and the pipeline can normally play the encrypted data.

The invention relates to the technical field of information processing, and discloses a data encryption method, a data decryption method and related devices. The data encryption method comprises the steps that to-be-encrypted data is obtained, a block running number is assigned to the to-be-encrypted data, serial numbers are assigned to all characters in the to-be-encrypted data and a stray parameter is assigned to each character; a cyclic redundancy check code of the to-be-encrypted data is calculated, and the following operations are carried out on each character: based on a DES encryption algorithm, a fixed code corresponding to each character is calculated according to the cyclic redundancy check code, block running number, character, and serial number corresponding to the character ofthe to-be-encrypted data, and according to the fixed code and the stray parameter corresponding to the character, the character is encrypted to obtain an encryption character; each encryption character is obtained sequentially, and according to all encryption characters, an encryption block of the to-be-encrypted data is generated. The data encryption method and the data decryption method can effectively prevent leveling data from being damaged and tampered.

The invention provides a data encryption method and device, and a terminal. The method can comprise the following steps: when a decryption operation of enabling a terminal decryption function is detected, obtaining an unlocking password used by the decryption operation; generating a first key based on the unlocking password; and when the first key is consistent with a pre-stored second key, decrypting encrypted data stored on the terminal based on the first key, wherein the second key is generated based on a lock screen password set by a legal user. By application of the data encryption method and device provided by the embodiment of the invention, the encrypted data on the terminal are decrypted without losing any data, therefore the data security of the terminal is improved, convenience is provided for the user and the user experience is optimized.

The invention is applicable to the technical field of blockchains, and relates to an information encryption algorithm, an information encryption device, an information decryption algorithm, an information decryption device, and a communication method. The information encryption algorithm comprises the following steps of: encrypting to-be-encrypted data according to a hash value of a random numberto generate first encrypted data; encrypting the hash value of the random number according to a preset first user private key and a preset second user public key to generate second encrypted data; andcombining the first encrypted data with the second encrypted data to generate final encrypted data. According to the information encryption algorithm provided by the invention, only a first user public key and a second user private key can be used for decrypting the second encrypted data and acquiring the hash value of the random number for decrypting the to-be-encrypted data, thereby realizing decryption of the encrypted data; and the second user private key is only owned by a second user serving as an information receiving end, so that the security of communication information is effectively ensured.

The invention provides a program stream decryption method, a device and a terminal, belonging to the mobile broadcasting television field. The program stream decryption method comprises steps of obtaining business through Wifi network when a client identification module SIM card is not inserted in the terminal, separating the encrypted program stream secret key information from the received broadcasting program stream, utilizing the business secret key to perform decryption on the program stream secret key information to obtain a control word CW, and performing decryption on the received broadcasting programs stream according to the CW. The technical scheme of the invention enables the terminal usage not to be limited by the operator to achieve decryption of the program stream secret key and watching broadcasting programs on the premise that the terminal cost and the network device alternation cost are not increased.

The invention provides a file encryption method and device and a file decryption method and device. The encryption method comprises the following steps of obtaining a binary byte stream correspondingto a to-be-encrypted file from a local first folder appointed by a user; performing operation on the obtained binary byte stream corresponding to the to-be-encrypted file and the binary byte stream corresponding to the encryption password set by the user to obtain a binary encryption byte stream corresponding to the encrypted file; and storing the encrypted file in a local second folder specifiedby the user, and deleting the to-be-encrypted file from the first folder. Therefore, the file can be encrypted efficiently and conveniently.

The invention discloses a data crawling method and device, a storage medium and a terminal. The data crawling method comprises the steps of simulating a browser to send an access request for a targetaccess website; receiving a response message of the target access website for the access request, wherein the response message comprises a state code and page data; updating the access request according to the state code or the page data; and obtaining the content in the target access website by utilizing the updated access request. According to the technical scheme, the data crawling efficiency of the web crawler can be improved.

The invention discloses a dynamic multi-party signature encryption and decryption method and system, and the method comprises the following steps: receiving a multi-party encryption request which is a request that a plurality of users carry out the common encryption of the same transaction information; and calling a dynamic multi-party signature contract pre-deployed on the block chain, verifying a signature of the multi-party encryption request, after verification is passed, obtaining on-chain public keys of a plurality of users by the dynamic multi-party signature contract, establishing a multi-party signature function to generate a multi-party encryption character string, and performing common encryption on the transaction information through the multi-party encryption character string, wherein any one on-chain private key or multiple on-chain private keys or all on-chain private keys in the multiple users are input into the multi-party signature function to be restored to obtain a multi-party encrypted character string so as to decrypt the transaction information. The technical problem that transaction information encryption and decryption are inflexible and limited is solved, and the method has the technical characteristics of multi-user encryption and decryption, dynamic and adjustable encryption and decryption, wide application scene, convenience in auditing, safety and reliability.

The embodiment of the invention provides a file encryption and decryption method, device and equipment. The method comprises: acquiring image data; determining face image features according to the image data; determining at least one of a facial action, a facial action sequence, expression information and gesture information according to the image data; and encrypting the to-be-encrypted file according to the determined face image features and the determined at least one of the face action, the face action sequence, the expression information and the gesture information. The method provided bythe embodiment of the invention is simple and convenient to operate and high in safety.

The invention provides an application of a laser-induced breakdown spectroscopy (LIBS) technology in information decryption, and provides an information steganography and decryption method based on an LIBS technology, which uses solutions containing different concentrations and different elements as ink to write an encrypted text, and performs element analysis and imaging on the encrypted text through the LIBS technology so as to realize decryption. The steganography and decryption method is low in cost, high in stability and high in safety, and has a good application prospect in the technical field of information encryption.