KR20150133557A - The encryption system in the mobile messenger screen - Google Patents

Abstract

The present invention includes: a terminal having a display and an input unit; and a server providing a service for transmitting and receiving text through the terminal, wherein the server and the terminal are connected via the internet; a program of the service which transmits and receives text is executed through the terminal; the terminal may be divided into a first terminal and a second terminal, wherein the first terminal specifies a second terminal receiving text, encrypts the transmitted text, and transmits the outcome to the server. The server can transmit the encrypted text to the second terminal. A method for encrypting the transmitted text is to select a text box when executing an encryption command through the input unit, and converting the selected text box into encrypted text, wherein the text or information that a user wants to transmit is encrypted in the display of the terminal by selecting a target of the encrypted text transmission and encrypting the text, and when decrypting the encrypted text or information, by the selection and command of the input unit provided at the top end of the display, the information is exchanged by encryption or decryption in real time.

Description

[0001] The present invention relates to a mobile communication system,

The present invention relates to an encryption system provided during transmission and reception of mobile characters. In particular, when a character is exchanged between a character sender and a receiver, the specified character or information to be transmitted can be encrypted and transmitted, And to provide a system that allows the user to do so.

The recently developed mobile terminal provides various functions such as voice call and text message transmission, video call, photograph or video shooting using a camera, wireless Internet access, and mp3 playback.

Particularly, in a mobile terminal subscribed to a mobile messenger service provided by a communication company, real time chatting is possible through a mobile messenger application, and the number of users is increasing day by day.

In addition, if there are two or more persons to whom characters are exchanged, or if there are two or more persons, it is suggested that a character user can use the contents jointly. In addition, not only is it possible to transmit important contents through characters while the use of characters increases, but also various important information is provided as attached files through a character transmission / reception system.

Of course, in Korean Patent Publication (No. 10-2007-0064694), "a key input unit; A display unit; A communication unit for communicating with the base station; A storage unit for storing a list of received numbers of recently transmitted text messages; A message generator for generating an encrypted text message including password setting information and password information in the generated text message according to a user's selection and a transmission processing unit for transmitting the generated encrypted text message through the communication unit A message transmission unit for transmitting the message; An authentication unit for authenticating whether or not the password information included in the encrypted text message received through the communication unit matches the data input from the key input unit and outputting the received text message to the display unit according to the authentication result of the authentication unit; A message receiving unit including a message processing unit for displaying or deleting the message; Quot; mobile communication terminal ".

However, in the interactive chatting system or the group chatting system, there is no concrete method for the user to decrypt the transmission character or the user who receives the encrypted character.

Therefore, it is necessary to develop a cryptographic system that easily encrypts or decrypts a character to be transmitted and information to be transmitted in a conversational manner.

Citation 1: Korean Patent Publication No. 10-2007-0064694, published on June 22, 2007

It is an object of the present invention to provide an effective system for encrypting characters or information to be transmitted by a user using mobile characters and decrypting encrypted characters or information in a portable terminal display.

The above object is achieved by a mobile communication terminal comprising a terminal equipped with a display and an input device, and a server for providing a service for transmitting and receiving a character through the terminal, wherein the server and the terminal are connected via the Internet, The terminal may be divided into a first terminal and a second terminal, and the first terminal designates a second terminal to which a character is to be transmitted, encrypts the transmission character and transmits the encrypted character to the server, A method for encrypting a transmission character can be performed by selecting a character box and converting the encrypted character into an encrypted character when performing an encryption command through an input device, And selecting a subject to be transmitted.

In addition, since the control command in which the character box is selected during the character transmission is inputted through the input device, the encrypted character box can be converted into a non-encrypted character box or the non-encrypted character box can be converted into a password and a character box, The central processing unit of the terminal encrypts the character to be transmitted and transmits the encrypted character to the server.

Also, when information is transmitted through a character box, a file such as an image moving picture can be also attached and the information can be encrypted and transmitted.

In addition, when the encryption character is received, the encryption is automatically released, or when the encryption decryption control command of the input device is input when the encryption character is transmitted, the encryption is released.

In a portable terminal display, a user using a mobile character encrypts a character or information to be transmitted, decrypts the encrypted character or information, selects an input device provided at the top of the display, Or decrypt the encrypted information.

1 is a diagram illustrating a configuration of a terminal connected to a server via a wired / wireless Internet.
2 is a block diagram of a portable terminal of the present invention.
3 is a diagram illustrating an embodiment of a method of storing data in a server and a mobile terminal.
FIG. 4 and FIG. 5 are views showing an embodiment showing a connection relationship between a server and a terminal.
Figures 6 and 7 are views of embodiments illustrating a method for selecting a partner that can provide encryption information.
Figs. 8 and 9 are views showing embodiments in which a partner is designated or a cipher method is determined during transmission / reception of a character.
10 and 11 are diagrams showing a method of performing an encryption method during text transmission.
12 is a diagram of an embodiment showing a method of converting whether or not to use a cryptographic system when transmitting and receiving a character.
13 is a diagram of an embodiment showing a display icon for notifying a password and a character reception.
14 is a diagram of an embodiment showing a control method when an encrypted character is received.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description.

Further, a detailed description of the known technology may be omitted.

In the present invention, a mobile terminal having a display and an input device capable of inputting information through a top of a display executes a program capable of transmitting and receiving a text to transmit The present invention relates to an encryption system in a mobile character screen capable of real-time encryption of a character or information to be encrypted and real-time decryption of a character or information transmitted and encrypted.

For example, data transmission over a network can be encrypted by simple string substitution, while maintaining security through the pki authentication scheme, ie, the character abc is of the type 3b44tgko If the character "abc" is encrypted, it is fixed to a predetermined type (determined by the type of encryption method). If only 3b44tgko is decrypted, it is possible to interpret it as "abc".

Also, there is a technique of encoding a character string based on ip by using the inverse operation function, since the user-specified operation and the user-specified symmetric encryption string are changed in each case based on the destination and the source ip.

In addition, communication between the existing Internet and the network is performed by protocols and networks. The ip address has a unique value in the network, and there can not be more than one ip in the world. Protocol is a tcp / ip (transmission control protocol / internet protocol) that is most commonly used as a promise protocol for sending and receiving data between different existing computers. It is a promise in advance in what form to send and receive. Data transmission between networks based on this protocol is divided into a physical layer and a logical layer. In the case of the data transmission type, data is transferred in the form of packets in the case of ip to ip.

In this case, the ip datagram shows how the packet is configured as a different name of the ip packet. The version, the length of the header, and the like are recorded. The ip address of the terminal transmitting the packet is stored. do. In addition, if the contents of the actual data are included, and if the packet is generally encrypted, this data part is simply encrypted with a predetermined format value. It usually uses base64 when encrypting the packet, and it will run binary data after encryption. On the other hand, Message Digest Algorithm 5 (MD5), Secure Hash Algorithm (SHA), Secure Key Cryptosystem (RSA), and Advanced Encryption Standard (AES) exist as encryption algorithms.

On the other hand, the above-mentioned communication encryption method is merely one example of the actually used method, and the present invention never uses the encryption method described above. That is, in the present invention, any encryption method can be applied to the present invention if it is a method that can be effectively used through a text message among a normal encryption method and a general decryption method.

1 is a diagram illustrating a configuration of a terminal connected to a server via a wired / wireless Internet.

The server 50 in the communication system constitutes a system for operating various information providing services through the wired and wireless Internet. An input unit 65 for inputting and managing information by an administrator or an operator of the server 50, an output unit 67 for outputting or displaying information, a database unit 55 for storing various information and information on service operation, And a controller 60 for controlling and controlling the information and outputting the information. Although it is not shown in the figure, it is natural that an interface unit capable of transmitting and receiving data to and from the user via the Internet or a communication network is further constructed. On the other hand, the information means all information files such as an image, a moving image, and a text.

The terminal (or portable computer) 20 is a device capable of transmitting and receiving various information through the wired or wireless Internet (or communication network) and displaying necessary information on the display.

Therefore, the terminal 20 is provided with a CPU 25 serving as a central processing unit, a display unit 21 for displaying motion pictures, a memory unit 35 for storing various information, and an input device 30 for inputting information . It is a matter of course that various functions such as a wired / wireless communication system module and a speaker vibration or a key button can be variously applied.

2 is a block diagram of a portable terminal of the present invention.

In the drawing, a central processing unit (CPU) 25 is a control means for controlling the overall operation of a terminal, which is a portable display device used in an embodiment of the present invention. The ROM 35a controls the execution program of the display device. The RAM 35b stores data generated during the execution of the program. The RAM 35c stores data required by the user and data .

The R / F unit 27 is a radio frequency, tunes to an RF channel, amplifies an input voice signal, and converts an RF signal received from the antenna into an intermediate frequency signal.

There is a display driving circuit 22 for driving the display by the output of the central processing unit 25 and a display 21 for displaying information on the screen in accordance with the output signal of the driving circuit. In addition, the central processing unit controls the input device 30 through the input device driver 31.

It is needless to say that an input / output unit may be further provided. That is, it may further include a numeric key, a menu key, and a selection key, and naturally includes a speaker and a vibration unit. It goes without saying that a camera and the like may be included in the input unit.

Meanwhile, although the terminal is taken as an example of the present invention, it can be said that the control of the central processing unit, the input device 30, and all the devices using the flat panel display device correspond to the algorithm of the present invention.

On the other hand, the input device 30 of the present invention means a conventional method of inputting information on the display. That is, on the display means that it can press or touch the display surface, but can input information without applying pressure or contacting the display.

Typical input devices are capacitive and resistive, but are not limited to. The present invention is not an invention for an input device, but an input device that can be used in general, to which the present invention is applied.

3 is a diagram illustrating an embodiment of a method of storing data in a server and a mobile terminal.

3 (A) shows a storage format of information stored in the database of the server. In other words, data on the member and member information using the character system of the present invention is stored in the database 55 of the server 50 Information data about members and members who are supposed to use the cryptographic system among the members is also stored, and encryption or decryption program information used in the character transmission system of the present invention is also stored.

The information on the member and the member is generally managed by the providing server and the level of the member information stored in the server will be the same.

3 (B) is an embodiment showing a storage form of information stored in the memory unit 35 of the portable terminal. Address book data of a person who can send and receive a character is stored. Cipher provider address book data designated to provide a password among the persons in the address book is also stored. Cipher program information capable of encrypting characters or information is also stored And decryption program information that can decrypt the encrypted character or information is also stored.

FIG. 4 and FIG. 5 are views showing an embodiment showing a connection relationship between a server and a terminal.

4 is a diagram illustrating a case where the first terminal 20-1 and the second terminal 20-2 exchange information with each other through the server 50. In this case, (A messenger system using a server).

5 is a view showing an embodiment in which the first terminal 20-1, the second terminal 20-2 and the Nth terminal 20-N exchange information with each other through the server 50, In this case, a case where three or more N users exchange messages with each other through a messenger system (messenger system using a server).

Figures 6 and 7 are views of embodiments illustrating a method for selecting a partner that can provide encryption information.

As shown in Fig. 6, the command icon 7a for enabling the use of the encryption system in the menu 7 displayed at the top of the screen is selected in the telephone number list 5 in which the name (or name) and the telephone number are displayed. Then, as shown in Fig. 7, the submenu 7b of the encryption system command icon 7a is displayed, and the opponent of the encryption system can be specified in the displayed lower menu 7b. That is, the user can be specified by inputting a relative name (name, name or ID) in the input window in the lower menu 7b.

If the password system command icon 7a is selected, the selection symbol 7c is displayed on the side of the name (or name), and the name (or name) of the opponent to be designated is displayed (In the embodiment of Fig. 7, the selection symbol 7c on the side of the selected name (or name) is distinguished by the indication).

Figs. 8 and 9 are views showing embodiments in which a partner is designated or a cipher method is determined during transmission / reception of a character.

The menu 7 is displayed at the top of the character transmission / reception screen on which the reception character 1 and the transmission character 2 are displayed as shown in FIG. 8, and the encryption system command icon 7a in the menu 7 is selected as shown in FIG. 9 . This choice is the same as specifying the recipient to whom the current character is to be sent as the target of using the encryption system service.

9, a lower menu 7b of the encryption system icon 7a is displayed, and an encryption program to be used in the encryption system can be selected through the displayed lower menu 7b.

That is, the character partner is selected during character use, and the principle is similar, although it is different from selecting a partner among a plurality of characters in the address list 5.

This relative designation is performed through the input device 30 in the terminal 20 and a command is inputted through the input device 30 in the terminal 20 in which a program capable of the encryption system service is stored and executed, When the opponent is selected by the input device command, the information of the selected opponent (the name or the telephone number ID of the name, etc.) is transmitted to the server 50.

Then, the control unit 60 of the server 50 stores information about the selected opponent in the member's personal information data by a predetermined method. This information is stored in the database 55. Finally, the control unit 60 of the server 50 transmits an inquiry about the use of the encryption system to the selected partner.

For example, if Hong Gil-Dong selects Kim Gil-Dong for the encryption system service at the terminal (first terminal) 20-1, the terminal transmits information about Kim Gil-Dong to the server, Save the selection. Then, the server transmits information about the vulcanization system service to the terminal (second terminal) 20-2 to allow the user to select whether to use the encryption system. At this time, if the information about the consent or the non-consent is input through the input device of the terminal (second terminal) 20-2, the selection result of the consent or the non-consent of Kim, is transmitted to the server again. Finally, the controller of the server stores the result of selecting and disagreeing by Kim Gil - dong in the personal database of Hong Gil - dong.

Naturally, the server 50 also stores the relative selection information of Hong Gil-dong and the agreement or non-selection information of Kim Gil-dong in the personal data base of Gil-dong.

Finally, when the information that the agreement is selected is input through the terminal (the second terminal) of Kim Gil Dong, the server selects the encryption system (the second terminal) from the terminal of Hong Gil Dong and the terminal of Kim Gil Dong Service.

10 and 11 are diagrams showing a method of performing an encryption method during text transmission.

Fig. 10 is a diagram of an embodiment for exchanging characters with a person who does not use an encryption system, and is similar to a user who uses a normal character transmission / reception system. FIG. 11 is a drawing of an embodiment for exchanging characters with a person using an encryption system, and has a form differentiated from a character input window used in a normal character transmission / reception system. That is, a general character input window (3) is used when characters are exchanged with a user who does not use the encryption system, but an encrypted input window (3 ') is used when characters are exchanged with a user using the encryption system.

At this time, the present invention has the following features.

- If you are not the person who uses the encryption system, the character input window (3) is displayed on the display screen when the character system is executed.

In the case of a person who is using the encryption system, the encryption character input window 3 'is displayed on the display screen when the character system is executed.

- When a character or information is input into the general character input window 3, the character or information is transmitted in an unencrypted state. However, when a character or " information " is input in the encrypted character input window 3 ' (Here, the " information " is a file which can be attached to the input window 3 or 3 'and may be an image, a moving picture, or another program file, etc.)

At this time, in the present invention, the character input window 3 and the character input window 3 'are distinguished from each other. In other words. The shape of the border line, the color of the border line, the thickness of the line, or the background color inside the input window.

Also, when inputting a character or attaching a file, it may be in the form of a character box instead of the input window illustrated in the embodiment of Figs. 10 and 11. [

12 is a diagram of an embodiment showing a method of converting whether or not to use a cryptographic system when transmitting and receiving a character.

12A is a drawing of an embodiment showing a command method of a general character input window 3, in which a command transmission icon 3 a is present, while a command extension icon 3 b is present, When the icon 3b is selected, a submenu is displayed and encryption can be selected from the submenu.

Then, when the normal character input window 3 is converted into the encrypted character input window 3 'and characters or information are transmitted, the encrypted character input window 3 can be encrypted and transmitted.

12B is a drawing of an embodiment showing a command method of the encrypted character input window 3 '. In the same way, while the character transfer command icon 3a exists, there is also a command expansion icon 3b When the command expansion icon 3b is selected, the submenu is displayed and non-encryption can be selected from the submenu.

Then, when the encrypted character input window 3 'is converted into the general character input window 3 to transmit characters or information, characters or information can be transmitted without being encrypted.

At this time, in the present invention, information that can be transmitted using the character system may be various information such as text, image, and moving picture.

That is, the encryption system of the present invention also has the following features.

- You can use the normal text input window and convert it into an encrypted character input window when necessary, so you can transmit the encryption information.

As a result, even if the user is not the user of the encryption system, it is possible to transmit the encryption character by the selection command, and the authentication step (the example described in the previous embodiment) may be performed through the server.

- Encrypted character input window can be used, and if necessary, it can be converted into a normal character input window, and non-encrypted information can be transmitted.

As a result, even when a character is exchanged with a person who uses the encryption system, the non-encrypted character can be transmitted by a selection command. At this time, the approval step (the example described in the previous embodiment) may be performed through the server.

13 is a diagram of an embodiment showing a display icon for notifying a password and a character reception.

When a character is received, a display icon for notifying the reception of the character is displayed on the upper display 21. At this time, the display icon 12 for the normal character and the display icon 12a for the password and the character are distinguished from each other.

This distinction is controlled by the central processing unit 25 of the terminal 20. That is, an image of a normal character icon, a password, and a character icon are stored in the terminal memory unit 35. When a normal character is received, a normal character icon 12 is displayed on the upper side of the display 21, And displays the encryption character icon 12a at the top of the display 21. [

14 is a diagram of an embodiment showing a control method when an encrypted character is received.

Fig. 14A is a diagram showing an embodiment in which when a cipher text is received, the cipher is automatically released and displayed in the text box. Fig.

In other words, the cipher text box 1-1 is distinguished from the non-cipher text input box 1 and displayed separately. This algorithm is performed by the central processing unit of the terminal. That is, when a password and a character are received, the decryption program stored in the memory unit is executed to release the password.

FIG. 14B is a diagram of an embodiment showing a case in which an encrypted character is displayed in a character box without being automatically released. FIG.

It is displayed on the unencrypted character box 1-2, but the contents of the information can not be known as shown in the figure. When the decryption command is inputted from the terminal user through the input device, the decryption is executed.

In this case, the method of decryption can be various. In the case of FIG. 14B of the present invention, the decryption key 1b is selected in the unlocked character box 1-2 and the lower menu 1b is displayed (Not shown in Fig. 14 (B)) again to select a decryption command from the submenu. The execution command is input through the input device, and the central processing unit detects the password And controls release.

FIG. 14C is a diagram showing an embodiment in which an encrypted character is received, and a password is released through a control command of the input device.

That is, the decrypted character is displayed in the cryptographic character box 1-2a connected to the unlocked character box 1-2.

FIG. 14D shows another embodiment when the encrypted character is received and the password is released through the control command of the input device.

The decrypted character is displayed in the separate decryption release box 1-2b as shown in Fig.

Further, in the present invention, the non-encrypted reception character box 1 and the encrypted character box 1-1 are distinguished from each other. In other words. The shape of the border line, the color of the border line, the thickness of the line, or the background color inside the input window. Also, the unencrypted character box 1-2 can be similarly displayed in a similar manner.

On the other hand, FIG. 14 explains an embodiment in which text characters are encrypted and transmitted. When various files (images, document programs, moving pictures, etc.) are encrypted and received in the character box, decryption can be performed in the same manner.

15 is a diagram of an embodiment showing a flow chart of execution of the present invention.

First, the terminal starts to operate, and then the character program is executed. (S100 -S102)

If it is designated as an encrypted character transmission partner through the input device 30 in the method of the previous embodiment of the present invention, The designated partner is stored in the database 55 of the server.

When a character is sent to a designated partner as an encrypted character transmission partner, a character is created and input through the terminal user, and the inputted information is encrypted. That is, the terminal central processing unit 25 proceeds to encrypt the input character. At this time, the encryption program stored in advance in the memory unit 35 is used. Then, the encrypted information is transmitted to the server (S 106). The same steps are performed not only for the character but also when the file is attached to the character.

On the other hand, when a character is sent to a partner not designated as an encrypted character transmission partner, it is determined whether or not the transmission has been switched to the encrypted character transmission. (S 110)

The method of switching to encrypted character transmission conforms to the previous embodiment of the present invention. When it is switched to encrypted character transmission, the input character or file is encrypted and transmitted to the server. (S 112)

In addition, if the encryption character transmission has not been switched, the input character or the attached file is directly transmitted to the server without encryption process (S 114)

When the program execution is terminated, the execution program is terminated (S116-S118)

7: Menu 7b: Submenu
20: Terminal 21:
25: central processing unit (CPU) 30; Input device
35: memory unit 50: server
55: Database 60: Control section

Claims (5)

A terminal having a display and an input device, and a server for providing a service for transmitting and receiving a character through the terminal, wherein the server and the terminal are connected via the Internet,
A program for sending and receiving a character is executed through the portable terminal, the terminal can be divided into a first terminal and a second terminal,
The first terminal may designate a second terminal to which a character is to be transmitted, encrypt the transmission character and transmit the encrypted transmission character to the server, and the server may transmit the encrypted character to the second terminal,
At this time, when a transmission command is transmitted through an input device, a character box can be selected and converted into an encrypted character,
And encrypting the character by selecting a target person to which the encrypted character is to be transmitted. 2. The method according to claim 1, wherein the control command for selecting the character box during the character transmission is input through the input device, so that the encrypted character box can be converted into the non-encrypted character box or the non-
Wherein when the information is transmitted through a password and a character box, the central processing unit of the terminal encrypts the character to be transmitted and transmits the encrypted character to the server. The encryption system as claimed in claim 2, wherein when the information is transmitted through the text box, a file such as an image moving picture is also attached, and the information can be encrypted and transmitted. The encryption system according to claim 1, wherein the encryption key is automatically decrypted when the encrypted character is transmitted. The encryption system as claimed in claim 1, wherein when the decryption control command of the input device is input when the encrypted character is transmitted, the encryption is released.

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