The present invention relates to a system and method for real-time selective encryption and decryption of a document. More particularly, the present invention relates to the system and method for selecting selective content for encryption and decryption of a document in a classroom.
BACKGROUND OF THE INVENTION
Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
With the rapid development of the mobile Internet and the rapid spread of mobile devices, cross-platform online education, online training, online conferences, and live broadcasts have become more common. The entire Internet industry has real-time courses on quality courses, online conferences, and online training. Sharing data has become a must-have function and basic requirement. The sharing of real-time recorded data becomes more and more important. Often, it is necessary to share documentation that contains confidential information with persons. Presently, there are various ways to secure the documents and prevent unauthorized persons from viewing the contents of a document. One way to protect documents is to zip the document in a secured file that can be password protected. In this approach, when someone desires to access the document, that person must first submit the proper password. If the password is correct, the document is retrieved and displayed for the requesting viewer. During transmission of a document over a computing network such as the Internet, the document can be attached to an electronic message and transmitted with the message. The receiver of the message can
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download the attachment and with the proper password, retrieve the attached and secured document.
Various approaches exist to mitigate the existing problems. A technique disclosed in US7346769B2 as an invention allows the user (author or creator) of a document to specify that certain portions of a document be selected for encryption while other portions of the document remain displayed as created. The user could employ a standard word processing editor technique to highlight (or swipe) portions of a document that the user desires to be encrypted. The highlighted portion would then be 'tagged' with a surrounding attribute indicating to the word processor that this highlighted portion of the document is to be encrypted. This process is similar to the existing word processor capability to highlight areas on a document and then assign rich text attributes, such as BOLD, ITALICS, etc., to those areas. With proper authorization, any encrypted portion of a document would be displayed as part of the document. Without proper authorization, the display of the document would only contain the unencrypted portions of the document.
Another technique is disclosed in US7840487B2 as a Disclosure of information is controlled selectively depending on users such that a plurality of users having different roles bearing no inclusive relation with one another can access the same area. Content is divided into a plurality of areas. For each of the areas obtained by division, secret keys (encryption/decryption keys in symmetric-key cryptography) are generated. The generated keys are encrypted using public keys in public-key cryptography, which are set in advance for the users depending on their respective roles. In the case where the content is to be disclosed to a plurality of users having different roles, the encryption of secret keys is performed separately for each user. These encrypted contents and encrypted secret keys are used to generate encrypted text.
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In the prior art, With reference to document encryption, the existing invention only known means of encrypting certain elements of a document is to encrypt the entire document. Regardless, the entire document is encrypted. The drawback to this approach is that encryption imposes a serious performance impact and usability impact. The present invention is capable of overcoming all drawbacks of the existing inventions hence there is a need for the present invention.
OBJECTIVE OF THE INVENTION
The main objective of the present invention is to provide a system and method for real-time selective encryption and decryption of a document.
Another objective of the present invention is to provide an effective teaching method and system for conducting teaching activities using Internet technologies, especially wireless communication networks, which are helpful for improving the learning efficiency of students at different levels, thereby promoting the improvement of learning effects.
Yet another objective of the present invention is to a system and method for generating verified documents that cannot be tampered.
Yet another objective of the present invention is to provide an immersive learning experience.
Yet another objective of the present invention is to provide a system and method for selecting selective content for encryption in a document.
Yet another objective of the present invention is to provide a method for selective decryption of the encrypted sections of a document.
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Further objectives, advantages, and features of the present invention will become apparent from the detailed description provided hereinbelow, in which various embodiments of the disclosed invention are illustrated by way of example.
SUMMARY OF THE INVENTION
The present invention relates to a system for real-time selective encryption and decryption of a document. The said system includes a presenter device, a listener device, and a wearable device. The presenter device includes a presenter device processor, a presenter device memory, a display board. The listener device includes a listener device memory, a listener device processor, a listener device display. The wearable device includes a camera, a vibration actuator, a buzzer, a networking module, a microphone, a wearable device processor.
In an aspect of the present invention, the presenter device includes: the presenter device processor executing computer-readable instructions to encrypt and decrypt the documents on other devices. Herein, the presenter device processor also executes computer-readable instructions to communicate documents to other devices. The presenter device memory stores the document in decrypted format and also stores the computer-readable instructions to be executed by the presenter device processor. The display board is connected to the presenter device in order to display the document for the listener to view the document. The listener device includes the listener device memory that stores the document with selective content being encrypted by the presenter device remotely and also stores the computer-readable instructions to be executed by the listener device processor. The listener device display, displays the document on the listener device with selective content being encrypted by the presenter device. The listener device processor executes computer-readable instructions to receive

encryption key and command from the presenter device thus decrypting the selective content of the document in real-time. Herein, the listener device processor also executes computer-readable instructions to receive the document from the presenter device. Herein, the presenter device and listener device are connected to each other through the wireless network. The wearable device is worn by the presenter of the document. The wearable device includes a camera affixed to the wearable device, the camera captures the images of the document presented by the presenter on the display board. The vibration actuator vibrates when the wearable device detects encrypted content in the document through the camera. The buzzer buzzes when the wearable device detects encrypted content in the document through the camera. The networking module wirelessly connects the wearable device to the present computing device. The microphone captures the voice command of the presenter. The wearable device processor controls all components of the wearable device that are the camera, the vibration actuator, the buzzer, the microphone, and the networking module. Herein, the wearable device processors end voice command of the presenter to the presenter device that sends the decryption key to decrypt the selective content of the document on the at listener device.
In yet another aspect of the present invention, the method for encrypting and decrypting a document is disclosed. The method comprising: the presenter connects a presenter device to a listener device through the wireless network; the presenter selectively encrypt the content of the document and the send the selectively encrypted document to the at listener device; the present store the decryption key of the selectively encrypted the content of the document on a presenter device memory of the presenter device; the presenter connects the presenter device to a display board through the wireless network; the present wear a wearable device that is connected to the presenter device and the presents the content of document to the listeners over the display board; the listeners also have the selectively encrypted the content of the document opened on the listener device; during

presentation the camera of the wearable device captures image of the selectively encrypted the content of the document and then a wearable device processor actuates the vibration actuator ,the buzzer thus indicating presenter about the encrypted the content of the document; the present send voice command through the wearable device processor to the presenter device that sends decryption key to decrypt the selective content of the document on the listener device. Herein, the wearable device is connected to the presenter device a networking module.
The main advantage of the present invention is that the present invention provides a system and method for real-time selective encryption and decryption of a document.
Another advantage of the present invention is that the present invention provides an effective teaching method and system for conducting teaching activities using Internet technologies, especially wireless communication networks, which are helpful for improving the learning efficiency of students at different levels, thereby promoting the improvement of learning effects.
Yet another advantage of the present invention is that the present invention provides a system and method for generating verified documents that cannot be tampered with.
Yet another advantage of the present invention is that the present invention provides an immersive learning experience.
Yet another advantage of the present invention is that the present invention provides a system and method for selecting selective content for encryption in a document.

Yet another advantage of the present invention is that the present invention provides a method for selective decryption of the encrypted sections of a document.
Further objectives, advantages, and features of the present invention will become apparent from the detailed description provided hereinbelow, in which various embodiments of the disclosed invention are illustrated by way of example.
DETAILED DESCRIPTION OF THE INVENTION
While this invention is susceptible to embodiment in many different forms, there is shown in the drawings and will herein be described in detail specific embodiments, with the understanding that the present disclosure of such embodiments is to be considered as an example of the principles and not intended to limit the invention to the specific embodiments shown and described. In the description below, like reference numerals are used to describe the same, similar or corresponding parts in the several views of the drawings. This detailed description defines the meaning of the terms used herein and specifically describes embodiments in order for those skilled in the art to practice the invention.
Definition
The terms "a" or "an", as used herein, are defined as one or as more than one. The term "plurality", as used herein, is defined as two or more than two. The term "another", as used herein, is defined as at least a second or more. The terms "including" and/or "having", as used herein, are defined as comprising (i.e., open language). The term "coupled", as used herein, is defined as connected, although not necessarily directly, and not necessarily mechanically. The term "comprising" is not intended to limit inventions to only claiming the present invention with such comprising language. Any invention using the term comprising could be separated into one or more claims using "consisting" or "consisting of claim language and is so

intended. The term "comprising" is used interchangeably used by the terms "having" or "containing". Reference throughout this document to "one embodiment", "certain embodiments", "an embodiment", "another embodiment", and "yet another embodiment" or similar terms means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of such phrases or in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics are combined in any suitable manner in one or more embodiments without limitation. The term "or" as used herein is to be interpreted as an inclusive or meaning any one or any combination. Therefore, "A, B or C" means any of the following: "A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition will occur only when a combination of elements, functions, steps or acts are in some way inherently mutually exclusive.
As used herein, the term "one or more" generally refers to, but not limited to, singular as well as the plural form of the term.
The drawings featured in the figures are for the purpose of illustrating certain convenient embodiments of the present invention and are not to be considered as limitation thereto. Term "means" preceding a present participle of an operation indicates a desired function for which there is one or more embodiments, i.e., one or more methods, devices, or apparatuses for achieving the desired function and that one skilled in the art could select from these or their equivalent in view of the disclosure herein and use of the term "means" is not intended to be limiting.
Figl illustrates line diagram of system(lOl) of present invention. The said system (101) includes a presenter device(HO), a listener device(122), a display board(128) and a wearable device(102). The presenter device(HO) includes a presenter device processor(l 18), a presenter device memory(120). The at least one listener device(122) includes a listener device memory(126),

a listener device processor(124), a listener device display(130). The wearable device(102) includes a camera(104), an at least one vibration actuator(106), buzzer(108), a networking module(112), an at least one microphone(l 16), a wearable device processor (114).
The present invention relates to a real-time selective encryption and decryption of a document. The present invention includes a presenter device, a listener device, a display board, and a wearable device. The presenter device includes a presenter device processor, and a presenter device memory. The presenter device processor executes computer-readable instructions to encrypt and decrypt the documents on other devices. Herein, the presenter device processor also executes computer-readable instructions to communicate documents to other devices. The presenter device memory stores the document in decrypted format and also stores the computer-readable instructions to be executed by the presenter device processor. The display board is connect to the presenter device in order to display the document for the listener to view the document. The listener device includes a listener device memory, a listener device display, and a listener device processor. The listener device memory stores the document with selective content being encrypted by the presenter device remotely and also stores the computer-readable instructions to be executed by the listener device processor. The listener device display document on the listener device with selective content being encrypted by the presenter device. The listener device processor executes computer-readable instructions to receive encryption key and command from the presenter device thus decrypting the selective content of the document in real-time. Herein, the listener device processor also executes computer-readable instructions to receive document from the presenter device. Herein, the presenter device and the listener device are connected to each other through wireless network. The wearable device is wore by the presenter of the document. The wearable device includes a camera. The camera is affixed to the wearable device, the camera captures the images of the document presented by the presenter on the

display board, vibration actuator, buzzer, a networking module, microphone, a wearable device processor . The vibration actuator vibrates when the wearable device detects encrypted content in the document through the camera. The buzzer buzzes when the wearable device detects encrypted content in the document through the camera. The networking module wirelessly connect the wearable device to the present computing device. The microphone capture voice-command of the presenter. The wearable device processor controls all components of the wearable device that are the camera, the vibration actuator, the buzzer, the microphone and the networking module. Herein, the wearable device processor sends voice-command of the presenter to the presenter device that sends decryption key to decrypt the selective content of the document on the listener device. In an embodiment, the wearable device is selected from spectacles, helmets, VR headset, smartwatches. In an embodiment, the presenter device is selected from a computer desktop, laptop, tab, smartphone. In an embodiment, the listener device is selected from a computer desktop, laptop, tab, smartphone. In an embodiment, the document is selected from a pdf document, digital book, video, selective material presented by the user. In an embodiment, the display board is selected from a whiteboard, projector screen, LCD. In an embodiment, wireless network that connects the presenter device and the listener device is selected from Wi-fi, internet, Bluetooth. In an embodiment, the networking module is selected from Wi-fi module, Zig-Bee module, and Bluetooth module.
In an embodiment, the present invention related to a method for encrypting and decrypting a document, the method includes:
the presenter connects a presenter device to listener device through the
wireless network;
the presenter selectively encrypt the content of the document and send
the selectively encrypted document to the listener device;

the present store the decryption key of the selectively encrypted the content of the document on a presenter device memory of the presenter device;
the presenter connects the presenter device to a display board through the wireless network;
the present wear a wearable device that is connected to the presenter device and presents the content of the document to the listeners over the display board;
the listeners also have selectively encrypted the content of the document opened on the listener device ;
during the presentation, the camera of the wearable device captures the image of the selectively encrypted content of the document and then a wearable device processor actuates the vibration actuator, the buzzer thus indicating presenter about the encrypted the content of the document;
the present send voice command through the wearable device processor to the presenter device that sends the decryption key to decrypt the selective content of the document on the listener device;
Herein, the wearable device is connected to the presenter device a networking module.
Herein, the microphone of the wearable device captures the voice
command of the presenter to be sent to the presenter device.
The present invention relates to a real-time selective encryption and
decryption of a document. The present invention includes a presenter device,
one or more listener devices, a display board, and a wearable device. The

presenter device includes a presenter device processor, and a presenter device memory. The presenter device processor executes computer-readable instructions to encrypt and decrypt the documents on other devices. Herein, the presenter device processor also executes computer-readable instructions to communicate documents to other devices. The presenter device memory stores the document in decrypted format and also stores the computer-readable instructions to be executed by the presenter device order to display the document for the listener to view the document. The one or more listener devices include a listener device memory, a listener device display, and a listener device processor. The listener device memory stores the document with selective content being encrypted by the presenter device remotely and also stores the computer-readable instructions to be executed by the listener device processor. The listener device display document on the one or more listener devices with selective content being encrypted by the presenter device. The listener device processor executes computer-readable instructions to receive encryption key and command from the presenter device thus decrypting the selective content of the document in real-time. Herein, the listener device processor also executes computer-readable instructions to receive document from the presenter device. Herein, the presenter device and the one or more listener devices are connected to each other through wireless network. The wearable device is worn by the presenter of the document. The wearable device includes a camera. The camera is affixed to the wearable device, the camera captures the images of the document presented by the presenter on the display board. One or more vibration actuators, one or more buzzers, a networking module, one or more microphone, a wearable device processor. The one or more vibration actuators vibrate when the wearable device detects encrypted content in the document through the camera. The one or more buzzers buzz when the wearable device detects encrypted content in the document through the camera. The networking module wirelessly connectthe wearable device to the present computing device. The one or more microphones capture voice-command of the presenter. The wearable device processor controls all

components of the wearable device that are the camera, the one or more vibration actuators, the one or more buzzers, the one or more microphones and the networking module. Herein, the wearable device processor sends voice-command of the presenter tothe presenter device that sends decryption key to decrypt the selective content of the document on the one or more listener devices. In an embodiment, the wearable device is selected from spectacles, helmets, VR headset, smartwatches. In an embodiment, the presenter device is selected from a computer desktop, laptop, tab, smartphone. In an embodiment, the one or more listener devices are selected from a computer desktop, laptop, tab, smartphone. In an embodiment, the document is selected from a pdf document, digital book, video, selective material presented by the user. In an embodiment, the display board is selected from a whiteboard, projector screen, LCD. In an embodiment, wireless network, that connects the presenter device and the one or more listener devices, is selected from Wi-fi, internet, Bluetooth. In an embodiment, the networking module is selected from Wi-fi module, Zig-Bee module, and Bluetooth module.
In an embodiment, the present invention related to a method for encrypting and decrypting a document, the method includes:
the presenter connects a presenter device to one or more listener devices
through the wireless network;
the presenter selectively encrypt the content of the document and send
the selectively encrypted document to the one or more listener devices;
the present store the decryption key of the selectively encrypted the content of the document on a presenter device memory of the presenter device;
the presenter connects the presenter device to a display board through the wireless network;

the present wear a wearable device that is connected to the presenter device and presents the content of the document to the listeners over the display board;
the listeners also have selectively encrypted the content of the document opened on the one or more listener devices;
during the presentation, the camera of the wearable device captures the image of the selectively encrypted content of the document and then a wearable device processor actuates the one or more vibration actuators, the one or more buzzers thus indicating presenter about the encrypted the content of the document;
the present send voice command through the wearable device processor to the presenter device that sends the decryption key to decrypt the selective content of the document on the one or more listener devices;
Herein, the wearable device is connected to the presenter device a networking module.
Herein, the one or more microphones of the wearable device captures the voice command of the presenter to be sent to the presenter device.
Further objectives, advantages, and features of the present invention will become apparent from the detailed description provided herein below, in which various embodiments of the disclosed present invention are illustrated by way of example and appropriate reference to accompanying drawings. Those skilled in the art to which the present invention pertains may make modifications resulting in other embodiments employing principles of the present invention without departing from its spirit or characteristics, particularly upon considering the foregoing teachings. Accordingly, the described embodiments are to be considered in all respects only as

illustrative, and not restrictive, and the scope of the present invention is, therefore, indicated by the appended claims rather than by the foregoing description or drawings. Consequently, while the present invention has been described with reference to particular embodiments, modifications of structure, sequence, materials and the like apparent to those skilled in the art still fall within the scope of the invention as claimed by the applicant

We Claim

1. A system(lOO) for real-time selective encryption and decryption of a document, the said system (100) comprises:
a presenter device(l 10), the presenter device(l 10) having
a presenter device processor(118), the presenter device processor(118) executes computer-readable instructions to encrypt and decrypt the documents on other devices, wherein, the presenter device processor(118) also executes computer-readable instructions to communicate documents to other devices,
a presenter device memory(120), the presenter device memory(120) stores the document in decrypted format and also stores the computer-readable instructions to be executed by the presenter device processor(118);
a display board(128), the display board(128) is connected to the presenter device(HO) in order to display the document for the listener to view the document;
an at least one listener device(122), the at least one listener device(122)
having
a listener device memory(126), the listener device memory(126) stores
the document with selective content being encrypted by the presenter
device(HO) remotely and also stores the computer-readable instructions
to be executed by the listener device processor(124),
a listener device display(130), the listener device display(130) display
document on the at least one listener device(122) with selective content
being encrypted by the presenter device(l 10),
a listener device processor(124), the listener device processor(124)
executes computer-readable instructions to receive encryption key and
command from the presenter device(HO) thus decrypting the selective
content of the document in real-time;

wherein, the listener device processor(124) also executes computer-readable instructions to receive document from the presenter device(l 10),
wherein, the presenter device(HO) and the at least one listener device(122) are connected to each other through wireless network,
a wearable device(102), the wearable device(102) is wore by the presenter of the document, the wearable device(102) having
a camera(104) affixed to the wearable device(102), the camera(104) captures the images of the document presented by the presenter on the display board(128),
an at least one vibration actuator(106), the at least one vibration actuator (106) vibrates when the wearable device(102) detects encrypted content in the document through the camera(104), at least one buzzer(108), the least one buzzer(108)buzzes when the wearable device(102) detects encrypted content in the document through the camera(104),
a networking module(112), the networking module(112) wirelessly connectthe wearable device(102)to the present computing device(HO),
an at least one microphone(116), the at least one microphone(116) capture voice-command of the presenter,
a wearable device processor (114), the wearable device processor
(114)controls all components of the wearable device(102) that are
the camera(104), the at least one vibration actuator (106),the least
one buzzer(108),the at least one microphone(l 16) andthe networking
module(112);
Wherein, the wearable device processor (114) sends voice-command of the
presenter to the presenter device(HO) that sends decryption key to decrypt
the selective content of the document on the at least one listener device(122).

2. The wearable device(102) as claimed in claiml, wherein the wearable device(102) is selected from spectacles, helmets, VR headset, smartwatches.
3. The presenter device(HO) as claimed in claim 1, wherein, the presenter device(HO) is selected from a computer desktop, laptop, tab, smartphone.
4. The at least one listener device(122)as claimed in claim 1, wherein, the at least one listener device(122)is selected from a computer desktop, laptop, tab, smartphone.
5. The document as claimed in claim 1, wherein the document is selected from a pdf document, digital book, video, selective material presented by the user.
6. The display board(128)as claimed in claim 1, wherein the display board(128) is selected from a whiteboard, projector screen, LCD.
7. The wireless network as claimed in claim 1, wherein wireless network that connects the presenter device(HO) and the at least one listener device(122) is selected from Wi-fi, internet, Bluetooth.
8. The networking module(112) as claimed in claim 1, the networking
module(112)is selected from Wi-fi module, Zig-Bee module, and
Bluetooth module.
9. The method for encrypting and decrypting a document, the method
comprising:
the presenter connects a presenter device(l 10) to an at least one listener
device(122)through the wireless network;
the presenter selectively encrypt the content of the document and send
the selectively encrypted document to the at least one listener
device(122);

the present store the decryption key of the selectively encrypted the content of the document on a presenter device memory(120) of the presenter device(l 10);
the presenter connects the presenter device(HO) to a display board(128)through the wireless network;
the present wear a wearable device(102)that is connected to the presenter device(110)and presents the content of the document to the listeners over the display board(128);
the listeners also have selectively encrypted the content of the document opened on the at least one listener device(122);
during the presentation, the camera(104)of the wearable device(102) captures the image of the selectively encrypted content of the document and then a wearable device processor (114) actuates the at least one vibration actuator (106), the least one buzzer(108) thus indicating presenter about the encrypted the content of the document;
the present send voice command through the wearable device processor (114) to the presenter device(HO) that sends the decryption key to decrypt the selective content of the document on the at least one listener device(122);
Wherein, the wearable device(102)is connected to the presenter device(l 10) a networking module(l 12),
Wherein, the at least one microphone(116) of the wearable device(102) captures the voice command of the presenter to be sent to the presenter device(llO).