WO2012165807A2

WO2012165807A2 - Information delivery system and method

Info

Publication number: WO2012165807A2
Application number: PCT/KR2012/004128
Authority: WO
Inventors: 성기운; 윤희태; 류영준; 임현철
Original assignee: 삼성에스디에스 주식회사
Priority date: 2011-05-27
Filing date: 2012-05-24
Publication date: 2012-12-06
Also published as: WO2012165807A3

Abstract

The present invention relates to an information delivery system and method. The information delivery system according to an embodiment of the present invention includes: an information transmitter for concealing information to be transmitted in binary data, and publishing the binary data including the concealed binary data and a predetermined query string into a web page on a network; and an information receiver for searching for the binary data published in the web page on a network by using the query string, and obtaining the information concealed in the searched binary data.

Description

Information delivery system and method

The present invention relates to a technique for transmitting and receiving digital information over a network.

An overlay network is a network in which networking devices or computers operating based on the Internet network communicate with each other by virtually forming an intercommunication network based on its own operating principle. In such an overlay network, an operation method of establishing communication by grasping information of other nodes that each node constituting the network participates in is required.

For this operation, in case of existing methods, a node to be newly entered is connected to a fixed specific server to receive information necessary for entry to an overlay network, or nodes that have already entered multicast / broadcast related information to other nodes. By sharing, a new node enters the overlay network. However, when the access information of the device (or server) that stores such access information is changed, the new entry node has no way of knowing the changed information, and the node to which the access information has been previously distributed cannot receive the updated information. Occurs. In addition, since multicasting / broadcasting is only provided in extremely limited environments, the number of nodes participating in or configuring the overlay network is reduced, resulting in lower availability of the overlay network and lower contribution of each node to the infrastructure. There is a problem that the likelihood of increasing investment costs increases.

On the other hand, the same problem occurs when the client transmits the access information for accessing the server side node in the network structure of the client server model. In the client server model, if you want to increase the capacity of the server as the number of clients increases, in general, deploy one or more load balancers (such as a load balancer) for a plurality of servers, each with its own connection information. The balancer is configured to forward traffic to multiple servers.

However, when the load balancer is arranged in front of the plurality of servers in this way, traffic from the client is concentrated on the load balancer, which causes connection load. Therefore, in order to solve this problem, it is necessary to additionally deploy a load balancer, but in this case, there is a problem that it is very difficult to deliver the access information of the newly added load balancer to the client.

As a countermeasure to the above problem, a DNS-based distributed structure can be considered. However, the DNS server simply returns a simple list of load balancers that can be accessed or changes the connection address in a round-robin or random order, thus switching the connection according to the purpose of networking (the client directly selects the target server to connect to). You can't expect an active action such as In addition, a method of providing a registrar server in front of the load balancer may also be considered. In this case, since all the traffic of the client is concentrated to a specific registrar server, the above-mentioned problem may occur in the registrar server as it is.

The present invention is to effectively transmit and receive concealed information between a sender and a receiver on a network.

The information delivery system according to an embodiment of the present invention for solving the above problems conceal information to be transmitted to binary data, and the information sender for posting the binary data and the predetermined query string hidden in the information to a web page on the network ; And an information receiver for retrieving the binary data posted to the web page on the network using the query string and obtaining the information concealed in the retrieved binary data.

On the other hand, the information sender according to an embodiment of the present invention for solving the above problems is a query generation module for generating a query string using a predetermined query string generation rule; An information hiding module for hiding information to be transmitted into binary data; And a publishing module for posting the query string and the binary data to a web page on the network so that the binary data can be retrieved from a search engine on a network by the query string.

On the other hand, the information receiver according to an embodiment of the present invention for solving the above problems is a query generation module for generating a query string using a predetermined query string generation rule; A search module for searching for binary data posted on a web page on a network by using the query string generated by the query generation module; And an information acquiring module for acquiring information concealed in the binary data searched by the searching module.

On the other hand, the information transmission method according to an embodiment of the present invention for solving the above problems, the information sender, generating a query string using a predetermined query string generation rule; Concealing, by the information sender, information to be transmitted into binary data; And posting, by the information sender, the query string and the binary data to a web page on a network such that the binary data can be retrieved from a search engine on a network by the query string.

On the other hand, the information receiving method according to an embodiment of the present invention for solving the above problems, the information receiver, generating a query string using a predetermined query string generation rule; Retrieving, by the information receiver, binary data posted to a web page on a network using the generated query string; And acquiring, by the information receiver, information concealed in the retrieved binary file.

According to the embodiments of the present invention, since information is transmitted and received between a sender and a receiver through a search engine, even when the network connection to the sender is blocked by a network manager, the sender and the receiver can smoothly exchange information. have.

In addition, when information is concealed inside the media data, it is recognized as a simple media file by a non-recipient third party and thus does not attract attention.

1 is a block diagram illustrating an information delivery system 100 according to an embodiment of the present invention.

2 is a block diagram showing a detailed configuration of an information sender 102 according to an embodiment of the present invention.

3 is a block diagram showing a detailed configuration of an information receiver 104 according to an embodiment of the present invention.

4 is a flowchart illustrating an information transmission method 400 according to an embodiment of the present invention.

5 is a flowchart illustrating an information receiving method 500 according to an embodiment of the present invention.

100: information delivery system

102: information sender

104: information recipient

106: web server

108: search engine

110: secondary web server

200: query generation module

202: information hiding module

204: publishing module

300: query generation module

302: search module

304: information acquisition module

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is only an example and the present invention is not limited thereto.

In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.

The technical spirit of the present invention is determined by the claims, and the following embodiments are merely means for efficiently explaining the technical spirit of the present invention to those skilled in the art.

1 is a block diagram illustrating an information delivery system 100 according to an embodiment of the present invention. As shown, the information delivery system 100 according to an embodiment of the present invention includes an information sender 102, an information receiver 104, a web server 106, and a search engine 108. In the illustrated embodiment, each component in the information delivery system 100 is configured to be connected to each other via a network to transmit and receive data. The network may include all kinds of communication networks capable of packet communication, such as wired / wireless Internet networks or mobile communication networks.

The information sender 102 is a component on the network for transmitting necessary information to the information receiver 104. The information may be, for example, entry node (entry node) connection information (IP / port information, etc.) of a specific overlay network, and in this case, the information sender 102 is a kind of information for transmitting the access information. It may be an open server. As another example, the information may be connection information of a load balancer or a registrar server for accessing a specific network system. However, it is noted that this is only one example of an example in which the present invention can be used, and in the present invention, there is no limitation on the type of information to be transmitted by the information sender 102. That is, the present invention can be applied to any kind of system for sending and receiving hidden information on a network regardless of the type of information.

The information sender 102 conceals information to be transmitted in binary data. The binary data may be, for example, a media file such as an image file, an audio file, or a video file. Alternatively, a general text file or an executable file may also be binary data in the present invention. When the binary data is an image file, the information may be hidden in the media file using steganography or digital watermarking techniques. Such a steganography or digital watermarking technique corresponds to a technique well known in the art to which the present invention pertains, and thus a detailed description thereof will be omitted. In addition, when the binary data is plain text, the binary data may be configured to include the information at a position promised between the information sender 102 and the information receiver 104 in the text.

In addition, the information may be encrypted using a predetermined encryption algorithm before being concealed in the binary data. In this case, even if a third party separates the information from the binary data, the extracted information itself is encrypted so that security can be further enhanced.

If the information to be transmitted is concealed in the binary data, the information sender 102 posts the binary data in which the information is hidden and the preset query string to a web page on the network. The query string is a keyword used by the information receiver 104 to retrieve the binary data on the network, and the information sender 102 includes a generation rule for generating such a query string internally.

The binary data is posted on the network so that when the information receiver 104 retrieves the query string through the search engine 106, a web page containing the binary data can be retrieved. For example, the binary data may be posted inside a web page returned as a search result when the information receiver 104 searches for the query string. In this case, the information receiver 104 may search the query string through a search engine, access the web page returned as a search result, and download the binary data.

Further, the binary data may be posted on the web page so that the binary data is output together with the search result screen output when the information receiver 104 searches for the query string. For example, most search engines output a portion of the web page content along with a link to the searched web page on the search result screen. Therefore, when the binary data is disposed in an appropriate place in a web page, at least a part of the binary data may be output on a search result screen of a search engine. When configured in this way, the information receiver 104 can obtain the binary data without directly visiting the web page. In this way, the binary data arrangement position in the Ep page to be displayed on the search result screen may be appropriately determined according to the content extraction algorithm of the search engine.

The information receiver 104 is a component on the network for receiving information from the information sender 102. In the above example, when the information is entry node (entry node) connection information (IP / port information, etc.) of a specific overlay network, the information receiver 104 receives the access information and enters the overlay network. It may be a node (ie, a new entry node or a node attempting to re-enter after leaving). In addition, when the information is connection information of a load balancer or a registration server (Registrar server) for accessing a specific network system, the information receiver 104 may be a client terminal to access the network system.

The information receiver 104 includes the same query string generation rules as the information sender 102, which generates a query string and retrieves the binary data posted to the web page on the network using the generated query string. Specifically, the information receiver 104 may transmit the generated query string to the search engine 108 and find the URL of the web page from the received search result in response thereto, and use the same to search the web page. You can access and download binary data. Alternatively, the generated query string may be transmitted to the search engine 108, and the information sender 102 may obtain information intended to be included in the search result from the search result received in response thereto.

When binary data is downloaded or obtained from a search result screen, the information receiver 104 obtains information concealed in the binary data. To this end, the information receiver 104 may separate the information concealed by the steganographic or digital watermarking scheme from the binary data using a key or the like previously shared with the information sender 102. If the separated information is encrypted, the information receiver 104 may decrypt the encrypted information using a predetermined decryption algorithm promised with the information sender 102. In addition, if the binary data is in plain text form, the information receiver 104 may separate the desired information from the text according to rules previously agreed with the information sender 102. For example, the information can be promised in advance to be extracted from a specific location of the text or a predetermined number of digits from a specific starting string.

The web server 106 receives from the information sender 104 a web page containing the hidden data and the generated query string and publishes it on the network. The search engine 108 is a component on the network that reads information about the web page from the web server 106 and stores it in an internal database using a web crawler or the like. It may be a web search service provider such as Yahoo. The database of the search engine 108 outputs the promised query string between the information sender 102 and the information receiver 104, the URL of the web page provided by the information sender 102, and the search result page of the web page. The information is stored to match each other, and thus, when the information receiver 104 searches the query string using the search engine 108, the URL of the web page and the information matched with the web page may be returned.

Meanwhile, the information delivery system 100 according to an embodiment of the present invention may include one or more secondary web servers 110. The secondary web servers 110 may be configured to publish one or more secondary web pages on the network, including links that point to web pages that contain binary data posted to the web server 106. In search engines such as Google, the result pages according to a specific query are sorted according to the sorting algorithm inside the search engine. In general, the larger the number of outbound links, the more important pages are recognized as important pages. Ranked. Therefore, the more the web page is linked by the secondary web servers 110, the higher the ranking in the search results of the web page, and accordingly, the probability that the information receiver 104 finds the web page from the search results is also increased.

2 is a block diagram showing a detailed configuration of an information sender 102 according to an embodiment of the present invention. As shown, the information sender 102 according to an embodiment of the present invention may include a query generation module 200, an information hiding module 202, and a publishing module 204.

The query generation module 200 includes a query string generation rule promised in advance with the information receiver 104, and generates a query string using the same.

The information hiding module 202 conceals information to be transmitted to binary data such as text, executable, image file, audio file, or video file using steganography or digital watermarking techniques.

The publishing module 204 posts the query string and the binary data to a web page on the network such that the binary data is searchable from a search engine on the network by the query string. In this case, the posting module 204 may post the binary data to a web page on a network so that the binary data is exposed on a search result screen by the search engine.

On the other hand, the information sender 102 may further include an encryption module (not shown) as needed. The encryption module encrypts the information to be hidden in the binary data in the information concealment module 202 using a preset encryption key, etc. In this case, the information concealment module 202 is configured to encrypt the information by the encryption module. The binary data is hidden.

3 is a block diagram showing a detailed configuration of an information receiver 104 according to an embodiment of the present invention. As shown, the information receiver 104 according to one embodiment of the invention includes a query generation module 300, a retrieval module 302, and an information acquisition module 304.

The query generation module 300 includes a query string generation rule promised in advance with the information sender 102, and generates a query string by using the rule.

The search module 302 searches for binary data posted to a web page on a network by using the query string generated by the query generation module 300. Specifically, the search module 302 transmits the generated query string to the search engine 108 on the network, and the search engine 108 transmits a search result according to the query string to the search module 302. The search module 302 then recognizes the URL of the web page from the search result, accesses the web page using the URL to obtain the binary data, or retrieves the binary data from the information output on the search result screen. At least get some.

The information acquisition module 304 obtains information concealed in the binary data retrieved by the retrieval module 302. As described above, the binary data includes information concealed using a steganography or digital watermarking technique, and the information obtaining module 304 uses the preset information extraction algorithm to store the information concealed in the binary data. Obtained

Meanwhile, the information receiver 104 may further include a decryption module (not shown) as necessary. The decryption module decrypts the information obtained from the binary data by the information acquisition module 304 using a predetermined decryption key or the like.

4 is a flowchart illustrating an information transmission method 400 according to an embodiment of the present invention. In the methods described in the present invention, including the present flowchart, it is noted that each step may be performed in a different order as necessary, or some steps may be omitted, and all such modifications fall within the scope of the present invention. .

First, the information sender 102 generates a query string using a preset query string generation rule (402).

Next, the information to be transmitted is concealed (404) in binary data such as an image file, an audio file or a video file. As mentioned above, the information can be hidden in the binary data using steganography or digital watermarking techniques. Meanwhile, if necessary, the step of encrypting the information using a predetermined encryption key or encryption algorithm may be performed before hiding the information.

Next, the query string and the binary data are posted to a web page on the network so that the binary data can be retrieved from a search engine on a network by the query string (406). As described above, in step 406, the binary data may be posted on a web page on a network so that at least some of the binary data may be exposed on a search result screen by the search engine.

First, the information receiver 104 generates a query string using a preset query string generation rule (502), and retrieves binary data posted to a web page on a network using the generated query string and a search engine (504). ). Web page search and binary data extraction using the query string have been described above in detail.

Next, the information receiver 104 obtains the information concealed in the retrieved binary data by using a predetermined information extraction algorithm (506). In this case, if the obtained information is encrypted, the method may further perform the step of decrypting the information obtained from the retrieved binary data using a predetermined decryption key.

Hereinafter, an application example of the present invention will be described.

응용례 1Application example 1

As mentioned above, embodiments of the present invention may be used to propagate connection information of an overlay network.

First, the open server belonging to the overlay network hides entry node access information (IP / port information, etc.) of the overlay network to which it belongs, and hides the hidden image. Upload to configured SNS page. Then, the node intending to enter the overlay network generates a query string for searching the SNS page by a predetermined algorithm, and finds the URL of the SNS page by searching the query string in a search engine. Thereafter, the node downloads the image from the SNS page, and accesses an overlay network by using the access information hidden in the downloaded image.

When using this method to propagate the access information of the overlay network, even if a third party on the network finds the image, it only recognizes the image as a simple photo or the like and recognizes that the hidden information exists. Is virtually impossible. Thus, the sender can deliver the desired information to the receiver in a very secure manner.

In addition, even when a direct connection to the open server is blocked from a server equipped with a firewall or the like, it is common to allow a connection in the case of a web service well known on a network such as SNS. Therefore, according to the present invention, even if the receiver is inside the firewall, it is easy to deliver the message.

응용례 2Application example 2

In addition, the present invention can also be used to deliver connection information of a load balancer to a client side in a network structure of a client server model including a plurality of servers and a load balancer located in front of the server.

For example, when a new load balancer is added, the sender hides the connection information of the added load balancer on an image and posts it to an SNS page, and the client terminal downloads the image posted on the SNS page and loads concealed therefrom. You can find out the connection information of the balancer.

When configured in this way, even if the server-side configuration (that is, the number and placement of servers and load balancers) is changed, it can be easily communicated to the client side. That is, if the client terminal only knows the rule of generating the query string that can receive the changed configuration, it can obtain the changed access information even if the user's binary (execution file, etc.) is not updated again by the server whenever there is a server side change. have.

Meanwhile, an embodiment of the present invention may include a computer readable recording medium including a program for performing the methods described herein on a computer. The computer-readable recording medium may include program instructions, local data files, local data structures, etc. alone or in combination. The media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those skilled in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical recording media such as CD-ROMs, DVDs, magnetic-optical media such as floppy disks, and ROM, RAM, flash memory, and the like. Hardware devices specifically configured to store and execute program instructions are included. Examples of program instructions may include high-level language code that can be executed by a computer using an interpreter as well as machine code such as produced by a compiler.

Although the present invention has been described in detail with reference to exemplary embodiments above, those skilled in the art to which the present invention pertains can make various modifications to the above-described embodiments without departing from the scope of the present invention. Will understand.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

Claims

An information sender that conceals information to be transmitted to binary data and posts the concealed binary data and a predetermined query string to a web page on a network; And

And an information receiver for retrieving the binary data posted to the web page on the network using the query string and obtaining the information concealed in the retrieved binary data.
The method of claim 1,

And wherein said binary data is a media file.
The method of claim 2,

Wherein the information is concealed in a media file of one of an image file, an audio file, or a video file using steganography or digital watermarking techniques.
The method of claim 1,

And the information receiver includes a query string generation rule identical to that of the information sender.
The method of claim 4, wherein

And the information receiver generates a query string using the query string generation rule and retrieves binary data posted to the web page by sending the query string generated to a search engine on a network.
The method of claim 5,

And the information receiver obtains the binary data from information displayed on a result screen according to the transmitted query string.
The method of claim 5,

And the information receiver accesses a web page provided from the search engine according to the transmitted query string to obtain the binary data.
The method of claim 1,

And the information sender encrypts the information using a predetermined encryption key and conceals the binary data.
The method of claim 8,

And the information receiver decrypts information obtained from the retrieved binary data using a predetermined decryption key.
The method of claim 1,

A web server which receives the binary data and the query string hidden from the information sender and publishes the query string in a web page on a network; And

A search engine that reads and stores the information about the web page from the web server, and provides the information receiver with the access address of the web page or at least a part of the binary data posted on the web page at the request of the information receiver. Information delivery system further comprising.
The method of claim 10,

The information receiver generates a query string using the same query string generation rule as that of the information sender, transmits the query string generated to the search engine, and receives the access address of the web page matching the transmitted query string. An information delivery system provided by a web server.
The method of claim 11,

And at least one secondary web server for publishing at least one secondary web page on the network, the link comprising a link pointing to the web page posted on the web server.
The method of claim 10,

The information receiver generates a query string using the same query string generation rule as that of the information sender, and retrieves the generated query string using the search engine, and at least a part of the binary data from the information displayed on the result screen. To obtain the information delivery system.
A query generation module generating a query string using a preset query string generation rule;

An information hiding module for hiding information to be transmitted into binary data; And

And a posting module for posting the query string and the binary data to a web page on a network such that the query string enables the binary data to be searchable from a search engine on a network.
The method of claim 14,

And the binary data is a media file.
The method of claim 15,

The information is concealed in a media file of one of an image file, an audio file or a video file using steganography or digital watermarking techniques.
The method of claim 14,

And the posting module publishes the binary data on a web page on a network such that the binary data is exposed on a search result screen by the search engine.
The method of claim 14,

And an encryption module for encrypting the information using a preset encryption key.
The method of claim 18,

And the information hiding module conceals information encrypted by the encryption module in the binary data.
A query generation module generating a query string using a preset query string generation rule;

A search module for searching for binary data posted on a web page on a network by using the query string generated by the query generation module; And

And an information acquiring module for acquiring information concealed in the binary data retrieved by the searching module.
The method of claim 20,

And wherein said binary data is a media file.
The method of claim 21,

And the search module accesses a web page included in a result of searching the query string generated using a search engine on a network, and obtains the media file from the accessed web page.
The method of claim 21,

And the information obtaining module obtains the information concealed in the media file using a steganographic or digital watermarking technique using a predetermined information extraction algorithm.
The method of claim 20,

And the search module obtains at least a portion of the binary data from information output on a screen of a result of searching the query string generated using a search engine on a network.
The method of claim 24,

And a decryption module for decrypting the information obtained from the retrieved media file using a preset decryption key.
Generating, by the information sender, a query string using a preset query string generation rule;

Concealing, by the information sender, information to be transmitted into binary data; And

And posting, by the information sender, the query string and the binary data to a web page on a network such that the binary data is searchable from a search engine on a network by the query string.
The method of claim 26,

And the binary data is a media file.
The method of claim 27,

Wherein the information is concealed in a media file of one of an image file, an audio file, or a video file using steganography or digital watermarking techniques.
The method of claim 26,

And the posting step publishes the binary data on a web page on a network such that the binary data is exposed on a search result screen by the search engine.
The method of claim 26,

And encrypting information to be transmitted by using a predetermined encryption key before the concealing step.
Generating, by the information receiver, a query string using a preset query string generation rule;

Retrieving, by the information receiver, a media file posted on a web page on a network using the generated query string; And

Obtaining, by the information receiver, information concealed in the retrieved media file.
The method of claim 31, wherein

And the binary data is a media file.
33. The method of claim 32,

And the searching step accesses a web page included in a search result of the query string generated using a search engine on a network, and obtains the media file from the accessed web page.
33. The method of claim 32,

The information acquiring step may include acquiring information concealed in the media file using a steganography or digital watermarking technique using a predetermined information extraction algorithm.
The method of claim 31, wherein

And the searching step acquires at least a portion of the binary data from information output on a screen of a result of searching the query string generated using a search engine on a network.
The method of claim 31, wherein

And after the information obtaining step, decrypts the information obtained from the retrieved binary data using a predetermined decryption key.
A computer-readable recording medium having recorded thereon a program for performing the method according to any one of claims 26 to 36 on a computer.