125 results about "On-the-fly encryption" patented technology

A portable storage device including a microprocessor and a secure user data area, the microprocessor operable to perform on-the-fly encryption/decryption of secure data stored on the storage device under a user password, the microprocessor also operable to exclude access to the secure user data area unless the user password is provided.

Techniques are provided for dynamically managing security for document collaboration. A document is associated with a list of collaborators, which can access the document. One collaborator is an identity service. The identity service is capable of dynamically encrypting versions of an access key needed by a collaborator to access the document and capable of dynamically adding or removing collaborators from the list of collaborators.

In accordance with an aspect of the present invention, a method for dynamically encrypting and decrypting digital information using a dynamically generated keys is provided. The method includes, obtaining digital information to be encrypted and identifying a file that is to be used in generating a dynamic key. The identified file is used in conjunction with a key generation algorithm to generate a dynamic key and that dynamic key is used with an encryption algorithm to encrypted the digital information. Likewise, to decrypt the encrypted digital information, a file is identified that is to be used to generate a dynamic key. That file and a key generation algorithm are used to generated a dynamic key. The dynamic key is used in conjunction with a decryption algorithm to decrypt the digital information.

The invention discloses a bar-code-based information verification system. The information verification system comprises a bar code, a database subsystem, a management subsystem, a server cluster, a fixed terminal and a mobile terminal, wherein the bar code is used for identifying and encoding a product and comprises encrypted product information; the database subsystem is used for storing bar code information and the position information of the terminals; the management subsystem is used for information management and operation maintenance; the server cluster is used for providing support for verification service; the fixed terminal is used for reading the bar code information and sending the bar code information to the server cluster for processing; and the mobile terminal is used for real-time anti-counterfeiting verification. The bar-code-based information verification system has the advantages that (1) system safety is improved by using a dynamic encryption algorithm; (2) the response speed and throughput of the system are increased by using the server cluster; (3) data safety is improved by data backup; and (4) the improved bar code design is suitable for the anti-counterfeiting traceability of commodity.

A security module and method implements data requests from a USB or other similar device, in which a secure component can communicate securely with a device without modifying the underlying USB bus protocol, or the device, even where the software controlling the bus is untrusted. A security module (physically separate or integrated into a device or hub) intercepts data being sent from device to secure component in response to a data request. A “not acknowledged” signal is sent to the secure component, and the data is encrypted. The next data request is intercepted, and the encrypted data sent in response. The acknowledgement from the secure component to the device is allowed to reach the device. In order to handle a setup request, an allow command is sent to the security module, which includes the encrypted and unencrypted setup command. If an encryption check is successful, a setup command sent to the device (via the security module) is allowed to reach the device.

This invention relates to VPN system based on dynamic code formula, which uses keys, chips and network technique and designs one set of dynamic symmetric code formula to make each formula with different virtual special networks in each data coding, wherein, each code system only adopts one symmetric code keys such as network keys, pack keys and channel keys through establishing code formula to generate formula and symmetric key generation formula.

The present invention relates to the technical field of implementing a communication between an intelligent device and a remote terminal using a dynamic key, in particular to a method for implementing a dynamic encryption communication between an intelligent device and a remote terminal. The method includes: a cloud sever respectively establishes communication channels with an intelligent device and a remote terminal, so that the cloud sever, the intelligent device and the remote terminal communicate with each other by the channels; the intelligent device appoints a first-level encryption rule with the cloud sever and the remote terminal; after the remote terminal passes verification according to the first-level encryption rule, the intelligent device appoints a dynamic encryption rule with the cloud sever and the remote terminal; and the intelligent device performs an encryption communication with the remote terminal according to the dynamic encryption rule. A manner of using dynamic keys is disclosed in this method, to facilitate generating a transmission key dynamically according to this protocol when a communication is performed, thereby guaranteeing that keys used during the communication transmission between the intelligent device and different remote terminals are different keys, and avoiding hidden dangers existing in the traditional data transmission process.

An electronic random numeral generator generates three ciphered safe levels and a random unpredictable dynamic key to be input to the real password, a user selects primary, middle and high three different levels selected by user, an input unit transmits the request information to CPU which generates dynamic key according to the levels and ciphers all numerals and symbols used in the password to be displayed to the user together with the ciphered numerals and symbols in light of this key and their relationship, the user transmits the ciphered real password to the CPU by the input unit to be deciphered and sent out by an output unit. If the password is right, it is allowed to access, if not, it is refused, the memory unit is used for storing real password and corrected real password.

The invention provides a multi-stage domain protection method and a multi-stage domain protection system based on information security level identifiers. Dynamic encryption/decryption of confidential documents is realized on the basis of security level identifiers including a creator identifier, a document identifier and a domain security level identifier, so that fine-grained access of validated users is realized, and the problem of information disclosure threat existing in a series of processes including generation, access, circulation and destruction of information of different security levels is solved.

A data security protection method generates dynamic encryption keys and dynamic decryption keys for a host and a client during data transmission between the host and the client. The host stores a host initial key K₀, and determines a host key K_n using a one-way hash function based on the host initial key K₀. The client stores a client initial key K′₀, and determines a client key K′_n using the one-way hash function based on the client initial key K′₀. Original data R_n is encrypted as encrypted data X_n using the host key K_n before being sent to the client. The client decrypts the encrypted data X_n using the client key K′_n, to obtain the original data R_n.

The application discloses a mobile payment method and its checkout terminal. The method includes: the merchant side uses a key to encrypt the data randomly combined by one or more of transaction data, merchant ID, time factor and random number to generate Cipher text; the merchant terminal extracts data from the cipher text to generate a dynamic password; the merchant terminal uses a two-dimensional code algorithm to calculate the Bluetooth PIN code and dynamic password on the merchant terminal to generate a dynamic two-dimensional code. This application has a higher degree of security when making payments. The QR code adopts dynamic encryption technology and is automatically updated once a minute, which helps to ensure the safety of merchant funds. At the same time, the merchant and consumer can use dual offline transactions. When the terminal is offline, it can also upload consumption bills to the background of the acquiring bank on time to ensure the safety of the merchant's funds.

A communication device for performing cryptographically secured communication in a WLAN (Wireless Local Area Network) network is provided that comprises a security enhancement unit and a MAC (Medium Access Control) unit. The security enhancement unit is for encrypting plaintext data frames into encrypted data frames and/or decrypting encrypted data frames into plaintext data frames. The MAC unit is for managing communication between communication devices within the WLAN network by coordinating access to a shared wireless communication medium through which communication signals are transmitted. The security enhancement unit and the MAC unit are adapted to perform an on-the-fly encryption process and/or on-the-fly decryption process thereby exchanging the encrypted data frames without buffering the encrypted data frames after encryption or prior to decryption, respectively. The embodiments may provide an improved encryption/decryption architecture including an on-chip memory for performing on-the-fly encryption and/or on-the-fly decryption in the framework of 802.11i security enhancement.

The present invention provides an electronic ticket compatible with the existing railway paper tickets, which comprises two layers of paper media where an antenna and a chip are buried in advance and is characterized in that dynamic encryption information is written into said chip in advance and has a check code associated with a serial number for anti-counterfeiting; at a ticket selling terminal, ticket information will be written into said chip, and such ticket information in said chip can be rewritten many times; and said antenna is used for receiving RF signals and transmitting them to said chip.

A method and a system of electronically identifying and verifying an individual utilising at least one biometric features of the individual is disclosed. The method includes the steps of activating an access apparatus with a means to capture at least one biometric feature of an individual in a secure manner using dynamic encryption, capturing the biometric feature of an individual wherein key features of biometric raw data are extracted, encrypting in a dynamic manner the biometric features, transmitting the encrypted data of the biometric feature to at least one server; and verifying the biometric features captured in the fruit step with a pre-stored biometric feature in the server. Wherein upon positive identification and verification of the individual access is given to an auxiliary means such as but not limited to access to secured doors, database, computer network and servers.

The invention discloses a data transmission method and device, a computer device and a storage medium, and the method comprises the steps: enabling a server to obtain a preset encryption field table when a to-be-transmitted task is detected to exist; the server determining a dynamic encryption field and an encryption algorithm corresponding to the current moment according to the encryption field table; the server encrypting data corresponding to the to-be-transmitted task based on the dynamic encryption field and an encryption algorithm to generate to-be-transmitted ciphertext data; and the server sending the ciphertext data to be transmitted to the client corresponding to the task to be transmitted; the client receiving ciphertext data to be transmitted; the client determining historicaltime information corresponding to the ciphertext data to be transmitted; the client acquiring a corresponding dynamic encryption field and a decryption algorithm based on the historical time information and a preset encryption field table; and the client decrypting the to-be-transmitted key data based on the dynamic encryption field and a decryption algorithm to generate plaintext data. Therefore,by adopting the embodiment of the invention, the risk of data leakage can be reduced.

The invention discloses a data dynamic encryption communication method based on two-wire system communication. The method comprises main node equipment data encryption sending and slave node equipmentdata receiving and responding, and the main node equipment data encryption sending process comprises the steps that to-be-sent data is encrypted in a fixed encryption mode, then a random dynamic secret key is sent, secondary encryption is conducted on the data through the random dynamic secret key, reverse order sending is conducted, and reply is waited after sending is completed; data receivingand responding processes of the slave node equipment are as follows: when a dynamic random key signal exists on a bus, detecting and storing the dynamic random key signal, then receiving encrypted data, decrypting the encrypted data by utilizing a dynamic random key, then performing reverse processing, finally decrypting by adopting a fixed encryption mode to obtain original data, generating encrypted reply data, and sending the encrypted reply data to the bus. According to the invention, dynamic encryption of two-bus or direct-current carrier data is realized, communication data is effectively prevented from being intercepted by external communication and violently attacked by the outside, and the security of data transmission is ensured.

The invention provides an audio-visual transmission and encrypting device, which comprises a playing mechanism and a video signal receiving mechanism, wherein the playing mechanism is capable of processing audio-visual signal, and is at least provided with a drive unit, a dynamic decryption unit and an application program unit which are connected with each other; and the video signal receiving mechanism is connected with the playing mechanism through a connecting interface, and is at least provided with a receiving and demodulating unit capable of receiving external audio-visual signals, and a dynamic encrypting unit connected with the receiving and demodulating unit; and the dynamic encrypting unit can receive a dynamic encrypting string of the drive unit, operate the dynamic encrypting string, encrypt the operated dynamic encrypting string with the audio-visual signal and transmit the encrypted dynamic encrypting string to the drive unit. Therefore, encryption data used in the communication process of the video signal receiving mechanism and the playing mechanism are not easy to decode, and video signal data during the transmission are effectively protected.

The invention provides encryption and decryption methods and devices of a sliding track background picture. The encryption method of the sliding track background picture includes: receiving a verification-code acquisition request sent by a client, and generating the original sliding track background picture according to the verification-code acquisition request; randomly dividing the original sliding track background picture into a plurality of division blocks, and using a randomly generated encryption factor to carry out out-of-order arrangement on the plurality of division blocks of the sliding track background picture; and encoding the encryption factor and a sliding track background image after out-of-order arrangement according to a set encoding mode to generate corresponding encrypted character strings, and returning the same to the client. According to the encryption and decryption methods and devices of the sliding track background picture provided by the embodiment of the invention, track background picture contents can be directly returned, a link form is not used, and server realization complexity is reduced; and the encryption method adopts out-of-order encryption and dynamic encryption, and greatly increases cracking costs and difficulty of a cracker.

The invention discloses a network security key protecting method in the field of Internet of things. The network security key protecting method comprises the following steps: a public key is randomly generated after a host computer starts up a work; the host computer and a slave computer complete connection initialization through a reliable connection way; equipment identifiers of counterparts are mutually recorded by the host computer and the slave computer, and a static private key during connection establishment is generated under the domination of the slave computer; after accessing to the network, all communications between the host computer and the slave computer have a dynamic encryption mechanism dominated by the host computer. Through application of a safe connection initializing mechanism and a dynamic key mechanism, network connection between the host computer and the slave computer can be quickly and securely realized, so that a user does not need to remember a security key, but secure wireless connection can be quickly and conveniently established; the risk that the key is monitored by a malicious device and the risk that information is copied and faked are avoided.

The invention provides a dynamic encryption safe login method and device. The method comprises the steps of: sending a random ID request to a user side accessing an application, and then receiving a verification code dynamically generated by the back end of the application; verifying the verification code, and if the verification is passed, generating a key according to the ID request; and obtaining encrypted user data by using the key and sending the encrypted user data to the back end of the application, so that the back end of the application verifies and logs in the encrypted user data. According to the invention, the segmented dynamic encryption transmission data starts from a security perspective; the possibility that the whole data is cracked after being stolen is avoided, the situation that the data is easy to crack due to the fact that encryption strings transmitted each time are the same under the condition that the same user logs in for many times is avoided, and the situation that the input of the user is intercepted and monitored after a malicious program is implanted is avoided. Therefore, the safety of data transmission of the user and the application is further improved, and the sensitive information of the user and the application can be safely transmitted and timely processed.