155 results about "Base64" patented technology

A method involves retrieving from an email message, information concerning at least one remotely monitored device. The method involves obtaining a line of the email message containing the information, decoding the line obtained from the email message if it has been encoded, and decrypting the decoded line. The decrypting involves using an abstract decrypter class configured to perform a virtual function and using any one of a plurality of derived decrypter classes each of which is configured as a derived class of the abstract decrypter class. The abstract decrypter class and the any one of the derived decrypter classes are collectively configured to decrypt the decoded email message, using the any one of the derived decrypter classes with the abstract decrypter class without having to modify the abstract decrypter class. An exemplary system for remotely monitoring devices uses the SMTP email protocol to send status, configuration, or other information concerning at least one of the devices in a MIME attachment of an email message. A POP3 processing module in the receiver of the email has a class structure. An interface class accesses an email server and obtain the email message including the MIME attachment. An extractor class extracts the MIME attachment from the email message, and a decoder class performs Base64 decoding of the attachment. An abstract decrypter class and each of plural derived decrypter classes configured as a derived class thereof, permit flexibility in adopting new decryption processes without having to modify the abstract decrypter class.

Systems and methods for device identification for management and policy in the cloud, using a combination of several hardware parameters and user's identification to generate a unique identifier for a user device and associated user. IOCTL and Assembly can be used to get the different hardware parameters. All the hardware parameters can then run through a process to generate a fixed size hardware fingerprint. A base64 encoding can be performed to convert it into a string, for consumption of database. The resultant identifier is unique and it is never stored on machine. The application can simply generate it whenever needed. The resultant identifier can used by a service provider to uniquely identify the device even when the device is moving hands or locations. The resultant identifier is never stored, so moving data from one device to another will not result in the same identifier for two devices.

The invention discloses a design method of a separate-storage type key-value storage system and relates to the technical field of storage system and program design. The method comprises constructing writing and reading functions of value in files and storing the value in a separate file according to a writing sequence; combining the offset of the value in the file and the length of the value into a 64-bit information field and base64-encoding the information field; writing key and the base64-encoded information field as a key-value pair in to an existing key-value storage system; reading the value in a memory mapping mode. The design method of the separate-storage type key-value storage system improves the prior art a little and can greatly improve the reading performance of the key-value storage system when a reading sequence is close to the writing sequence.

The invention discloses a Chinese text preprocessing method based on Base64 coding, comprising the following steps of: (1) preprocessing Chinese text by using the Base64 coding and converting the text to character string text; (2) segmenting words of the converted character string text and extracting text feature items by using 4-gram; (3) screening the text feature items by utilizing IG (Information Gain) to generate a feature space; (4) counting word frequency of the text feature items, wherein the word frequency is used for expressing weight of the feature items and the Chinese text is expressed as an eigenvector; and (5) training an SVM (Support Vector Machine) classifier by utilizing an LIBLINEAR toolbox to obtain an SVM classification model and classifying the Chinese text to judge the category of the text. According to the Chinese text preprocessing method based on the Base64 coding, the Base64 coding is used for cording the Chinese text and the 4-gram is used for extracting the text feature items; therefore, the problems that the Chinese text classification is time-consuming and not high in accuracy rate of Chinese word segmentation during the Chinese text classification are solved; in the mean time, the IG is used for feature selection and the word frequency is used for expressing text feature, therefore, the accuracy rate and efficiency of the Chinese text classification can be effectively enhanced.

The invention discloses a Web technology-based webpage screen capture method. The method comprises the following steps of calling a program interface of a web page browser to obtain HTML elements of ato-be-captured webpage; calling the program interface of the browser to analyze attributes of the HTML elements, and storing the analyzed attributes as an ordered HTML element attribute list; callingthe program interface of the browser to create a canvas of an HTML; calling the program interface of the browser to cyclically scan the HTML element attribute list, and drawing HTML attribute contents in the HTML element attribute list on the canvas; calling a program interface of the canvas to convert codes of the drawn canvas into base64 character strings, and performing storage; and guiding auser to download the canvas by adding a button to the page. The method has the characteristics of no dependency on other tools and solving of the technical problem of dependency of webpage screen capture on a third-party tool.

The invention provides a method for hiding a URL (Uniform Resource Locator) in content delivery network. The method comprises the following steps that: a user player carries out Base64 encryption on a video file path in a request URL in advance and requests available CDN (Content Delivery Network) nodes to a CDN scheduling server by the encrypted request URL; the CDN scheduling server carries out Base64 decryption on the request URL and then selects an available CDN node according to a scheduling strategy; the CND scheduling server returns an available CDN node address to the user player; the user player carries out Base64 encryption on the video file path in the request URL after receiving the available CDN node address, and the encrypted request URL sends a video data request to the available CDN node; and the available CND node receives the encrypted video data request, then carries out Base64 decryption on the encrypted video data request and sends the requested video data to the user player. The method disclosed by the invention has the advantage of improving the safety of CDN service.

A global knowledge representation system and method using an extensible, language-independent markup language made up of KODAXIL encoded words, includes crafting a universal representation of knowledge in any natural language composed of words and symbols as a string of KODAXIL words which are an extensible set of BASE64 encodings of common and reserved vocabulary by assigning to each word and each symbol a KODAXIL word composed of an artificial handle derived in part using BASE64 encoding to encode within each KODAXIL word information about each word and symbol including lexical class of the word, other semantic information, and expression structure including implicit and explicit context markup; and stringing the KODAXIL words together to provide the universal representation of knowledge.

The invention provides a transmission method and presentation method of a progressive picture based on the XMPP. The transmission method comprises steps: 1) obtaining binary data of a picture file by a picture transmitting end according to a format of a to-be-transmitted picture, and recoding the obtained binary data according to a JPEG progressive encoding mode; 2) recoding the binary data of the JPEG picture after compression through a Base64 method, and converting the binary data into text data; and 3) ordering segmenting the text data after going through Base64 recoding to form a text flow, defining a sending sequence of the text flow through an ID value, and then converting the text data into an ordered xml flow file. In cross-terminal collaborative interaction equipment based on the XMPP, the cross-terminal collaborative interaction is achieved, split-screen presentation and cross-terminal operation of businesses are supported, and then a lot of picture files can be rapidly transmitted in different equipment terminals.

The invention discloses an information encryption and decryption method. A replacement/permutation network method is adopted to fix cleartext packet length as 128b, and the key expansion process and the encryption process are carried out. The method is achieved through shifting and the exclusive OR operation achieved by the combinatorial logic. The achieving method replaces the complex multiplication, the encryption speed is increased, parallel running water is adopted to process a plurality of data blocks at the same time, and the throughput capacity is improved. Base64 is adopted by the calculated binary data to conduct secondary encryption on ciphertext and secrete key encryption, messages between different platforms are communicated through the base64 message mode, the platforms conduct analysis on results obtained after the base64 encryption, the problem of the difference between the message analysis results of the different platforms is solved, and the cross-platform data encryption and decryption are achieved.

A communication apparatus capable of notifying a receiver of a reception mail error or transmission mail error by printing or the like and preventing incorrect data or error notification mail from being transferred or stored without notifying the user of the error, and a control method and storage medium therefor. To accomplish this, when analysis of electronic mail data reveals a MIME analysis error, BASE64 decoding error, TIFF analysis error, or image decoding error, i.e., when data which cannot be handled by the communication apparatus is contained, a global variable FORWARD is set to “1”. Also, when the received electronic mail is an error notification mail, the variable FORWARD is set to “1”. When the variable FORWARD is set to “1”, transfer and BOX storage of the received mail are inhibited, and the mail is printed by a printer section (2). When the variable FORWARD is not set to “1”, the received mail is transferred to the designated transfer destination or stored by BOX storage.

The invention relates to a method for realizing web encrypted access and information encrypted storage based on a gateway device. The method comprises the following steps: processing data transmission between a user and a device by use of an openssl secure socket layer protocol; separating the data processing from the data transmission business, creating a local socket service specially for processing the network data and generating response data; creating a remote socket service specially for the encrypted data interaction with a network client; performing plaintext interaction between the remote socket and the local socket; encrypting a user secret key, the permission and other sensitive information needing to be stored in the device by use of an AES+base64 encoded encryption way, and saving the ciphertext information in the device storage system. By use of the method disclosed by the invention, the web access of the gateway device can be automatically redirected to the access to a secure socket character, the security and the high efficiency of the data transmission and the original data processing logic and the user information security are guaranteed, and the method has extensive application range.

The invention provides a rich text format realization system and a rich text format realization method based on an expanded XMPP (xml based messaging and presence protocol). The system comprises a client and a server end, wherein the client comprises an encoding and decoding module, a text receiving and sending module and an image receiving and sending module, the encoding and decoding module is used for encoding and decoding instant messages, the text receiving and sending module is used for sending and receiving the text messages, the picture receiving and sending module is used for sending and receiving image information, the server end comprises a message receiving and sending processing module, an off-line message module and an image management module, the message receiving and sending processing module is used for receiving and transferring instant messages from the client, the off-line message module is used for temporarily storing the text messages, and the picture management module is used for storing and managing the picture information. The system and the method provided by the invention have the advantages that expansibility and intercommunity are good, the separated picture and text sending is realized, the message passage blockage caused by over size pictures is prevented, the base64 coding is adopted for sending the pictures in the instant messages, and the efficiency is relatively higher.

The invention relates to the field of security of information transmission between a server side and a client side, and in particular relates to a high-efficiency and safe network communication method. The high-efficiency and safe network communication method comprises the following steps: after a user successfully logs in, a series of certificates having the survival time can be generated at first; then, a client side encrypts a content, a certificate and a current timestamp to be transmitted at first; an encrypted ciphertext is compressed; finally, URL security Base64 coding of the compressed ciphertext is carried out; the ciphertext is sent to a server side; after the server side receives the ciphertext, URL security Base64 decoding is carried out at first; then, decompression and decryption are carried out; after being obtained, the certificate is checked; after the certificate is checked successfully, whether a request exists or not can be judged according to the timestamp; if the request does not exist, a changed timestamp is recorded on a server; and thus, repetitive submission of the request is prevented. By means of the high-efficiency and safe network communication method disclosed by the invention, the security problem of information sent by users and the transmission problem of a large amount of information can be solved; and thus, the high-efficiency and safe network communication method can be used for transmitting information between the server side and the client side.

The invention discloses a BASE64 coding and decoding method and a BASE64 coding and decoding system based on a block chain smart contract. In the embodiment of the specification, On one hand, a BASE64coding instruction and a BASE64 decoding instruction are defined and added into an instruction set of a block chain virtual machine; Meanwhile, BASE64 encoding logic corresponding to the BASE64 encoding instruction and BASE64 decoding logic corresponding to the BASE64 decoding instruction are deployed in the blockchain virtual machine. And on the other hand, a defined BASE64 coding instruction and a defined BASE64 decoding instruction need to be added into an instruction set of the intelligent contract compiler, so that the business intelligent contract compiled by the intelligent contract compiler contains the BASE64 coding instruction and/or the BASE64 decoding instruction. Therefore, if the business intelligent contract is deployed in the block chain network, the user can simultaneously assign and call the business intelligent contract to execute the business initiation transaction when constructing the business initiation transaction.

The invention discloses a centralized management method of a distributed storage ceph cluster network. A server end analyzes a received created cluster task, and obtains a network segment providing service for a cluster. The server end determines the IP address of the client which needs to be connected according to the task of creating the cluster and sends the instruction to the designated routeof the client port. After receiving the instruction, the client calls the local command according to the preset routing instruction to generate the unique uuid of the cluster, and sends the uuid to the server through the http protocol. The server receives the uuid of the client and stores it in the database for standby. The client end generates the key files needed for adding mon, adding osd and managing, reads the three key files in the form of string and encrypts them with base64, and sends the encrypted key files to the server end. The server receives three key files respectively, and directly stores them in the database for standby, and the cluster network creation is completed. The invention has the advantages of safety, there in not need to log on the server for operation, and controllability is enhanced.

The invention relates to a method and system for detecting website vulnerability. The method includes the steps of obtaining a to-be-detected website link, wherein the website link is in a Base64 coded format; carrying out decoding for the website link to recognize parameters in the website link; adding a testing character string into the parameters of the website link to form a testing link; carrying out Base64 coding on the testing link to form a coded testing link; and detecting whether a website has the vulnerability or not according to the coded testing link. By means of the technical scheme of the method and system, the vulnerability in the Base64 link can be accurately detected, and the network information interaction safety degree can be improved.

The present invention discloses a digital data transforming method. The method solves the problems of low encoding efficiency and increasing the network load when prepared to transmit enciphered e-mails or any 8-bit data sequence. The key technology is designing a "base-91 encoding" general bit strings to printable ASCII characters which is also referred to base91 encoding or Radix-91 encoding. Combined with Internet standard SMTP, MIME, S/MIME etc., the present invention can reduce 7.7 % of transmitted data or storage demand in place of Base64 encoding; and reduce 58.97 % of transmitted data or storage demand in place of QP encoding which processes the byte data with the high bit being 1. The present invention is applied in enciphering the Internet e-mails and transmitting or storing the compressed data.