TW202401284A - Management system for encrypted multimedia information and implementation method thereof - Google Patents

Abstract

When the present disclosure is implemented, a first user can scan a sensing device (such as a card) by a first information device (such as a mobile device with APP) to obtain an identification code; then the first information device generates a public key based on identity characteristics of a second user to encrypt a multimedia information (such as text, number, audio, images, video, etc.) which would be transmitted to the second user. Moreover, the first information device transmits the encrypted multimedia information, the identification code, and a time condition set by the first user to a server for a second encryption process. Further, the second user can scan the sensing device by a second information device to obtain the identification code and input the identity characteristics; then the second information device generates a private key corresponding to the public key and a key from the current point in time. Moreover, the second information device decrypts the encrypted multimedia information by the private key and the key to obtain the multimedia information.

Description

Encrypted multimedia information management system and its implementation method

The present invention relates to a multimedia information management system that can be encrypted based on time, and in particular to an encrypted multimedia information management system that must be opened within a specific time interval and an implementation method thereof.

With the development of science and technology, information equipment such as mobile phones and computers have become quite popular. The use of multimedia information to convey messages has gradually replaced the previous communication methods that relied on text, such as celebrating birthdays by shooting birthday videos, or using multimedia information media. Recording a will and matching it with a written will can make loved ones no longer face only cold words, but vivid images of their loved ones during their lifetime; the patents related to this type of technology are as follows: (1) Patent Publication No. TW201933149A, which is an interactive A virtual reality imaging system includes a service platform, a cloud database, and an interactive database. The service platform can be logged in by users. The cloud database includes a storage of the lifetime contract signed by the contractor, a storage of the original audio and video data uploaded by the user, and a storage of the original video and audio data of the service platform. Encoded audio and video data for data processing, and a storage of virtual real image audio and video data for image post-production and compilation of the encoded audio and video data; and other such as (2) Publication number: TW200943089A, sacrificial image management system and method; (3) Disclosure No.: CN113034328A, information storage equipment.

However, since the above usage scenarios are all in which the parties want to present the recorded content to each demand object at a specific time and situation, how to enable the objects to effectively receive the multimedia information under specific time conditions must be determined for the parties themselves. Content is still a big problem at present; in addition, for multimedia information content that involves rights and privacy, such as wills, confidentiality, etc., especially in today's situation where information security loopholes are hard to prevent, how can we prevent multimedia information content from being leaked? This is an important issue; accordingly, how to enable multimedia information content to be opened only within a specific time interval with good encryption protection is a problem that needs to be solved.

In view of the above problems, the inventor of the present invention has made improvements in multimedia information management based on many years of experience in related industries. Therefore, the main purpose of the present invention is to provide an encryption method that has time conditions and uses personal identity characteristics for encryption. multimedia information management system and its implementation method.

In order to achieve the above purpose, the encrypted multimedia information management system and its implementation method of the present invention include a sensing device, a first information device, a second information device, and a server. When a first user wants to The recorded multimedia information will be received and viewed by the second user at a specific point in time. The multimedia information may include text, numbers, sounds, images, video streams, etc.; the first user may first An information device scans the sensor device to obtain an identification code of the sensor device. The first user then uses the first information device to set a time condition (that is, a specific time point for the second user to watch), and the second user's An identity feature. The first information device uses the identity feature to generate a public key and encrypts the multimedia information for the first time. After completion, the identification code, time condition, and the multimedia information completed for the first time are uploaded to the server. This At that time, the multimedia information corresponds to the identification code, and a key is generated using the identification code and time conditions to encrypt the multimedia information for the second time; when the second user wants to view the multimedia information, he scans it through the second information device The sensing device obtains the identification code and inputs the identity characteristics through the second information device to generate a private key corresponding to the public key. The second information device uploads the private key, identification code, and current time point to the server. The server first uses the identification code to find the corresponding multimedia information, and uses the current time point and the identification code to generate a key for the first decryption. The successful decryption can confirm that the multimedia information was requested to be opened at the correct time. After the first decryption is completed, The server will decrypt the private key for the second time. If the decryption is successful, it also means that the second user information is correct, and it can be determined that the recipient is not the person who stole the information. In this way, the multimedia information can be designated at a specific time. Function enabled by the user.

In order to enable you, the review committee, to clearly understand the purpose, technical features and effectiveness of the present invention, the following description is provided with illustrations, please refer to it.

Please refer to "Figure 1". Figure 1 is a system architecture diagram of the present invention. As shown in the figure, the encrypted multimedia information management system 1 of the present invention includes a sensing device 11, a first information device 12, and a server 13 , and a second information device 14. The following are examples of each device: (1) Sensing device 11: The sensing device 11 includes a wireless communication element 111, where the wireless communication element 111 can be, for example, an induction coil of Near-field communication (NFC) or Radio Frequency Identification (Radio Frequency Identification, RFID) induction coil, etc., the wireless communication element 111 stores the identification code of the induction device 11, and when it is read by induction, if a decryption request is received, the identification code is sent to the device that issued the decryption request; in addition, the induction device 11 It can also have a color conversion element 112. The color conversion element 112 can be, for example, a light-emitting element, specifically a light-emitting diode light source, an electrochromic material, an electronic ink and other materials. The color conversion element 112 can be in a wireless communication element. When the wireless communication element 111 is read and sensed, the color changes or displays a luminous state. For example, when the wireless communication element 111 is successfully read, the color conversion element 112 emits light, changes color, or displays different patterns. Preferably, The sensing device 11 is shaped like a card, and the color changing element 112 is a transparent light-emitting diode and is shaped around the edge of the card. (2) First information device 12: The first information device 12 can be, for example, one of a mobile phone, a tablet computer, a personal computer, etc. Preferably, the first information device 12 is a portable mobile device and is used with Program APP to execute subsequent technical features. The first information device 12 includes a first communication unit 121 and a first processor 122; the first communication unit 121 is used for information connection with the sensing device 11 and the server 13, and Obtain the identification code of the sensing device 11. In addition, the first processor 122 can generate a public key based on an identity characteristic of the second user based on a first key generation function, and use the public key to encrypt the multimedia information for the first time. , the first key generation function can, for example, apply encryption algorithms such as RSA, ElGamal, Rabin, DSA, ECDSA, etc., and associate the multimedia information that has been encrypted for the first time with the identification code, and then use the first communication unit 121 Upload multimedia information and a time condition to the server 13; preferably, the first communication unit 121 can also set a limit on the number of views and upload it to the server 13 at the same time. (3) Server 13: The server 13 has a processing unit 131 and a memory unit 132; the processing unit 131 can complete information connections with the first information device 12 and the second information device 14 respectively, and the memory unit 132 can process the received information. Information, such as multimedia information, identification codes, private keys, etc. are stored; among them, the processing unit 131 provides identification codes and time conditions as input data, and generates a key with symmetric encryption based on a second key generation function, The second key generation function can be, for example, a time-based one-time password algorithm (TOTP), which uses the key to encrypt the multimedia information that has been encrypted for the first time for a second time, and processes The unit 131 is also used to filter out the corresponding multimedia information using the identification code; when there is a need for decryption, the processing unit 131 also generates a key based on the second key generation function from the current point in time and the identification code to perform the process. First decryption; and after completing the first decryption, a second decryption is performed using a private key transmitted by the second information device 14, and after the decryption is completed, the multimedia information is sent to the second information device 14; preferably , the server 13 can delete the multimedia information or refuse the decryption request based on the aforementioned limit on the number of views; the processing unit 131 can be, for example, a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor (Micro Processing Unit, MPU), or microcontroller (Micro Control Unit, MCU), or a combination thereof. The memory unit 132 can be, for example, a solid state disk (Solid State Disk or Solid State Drive, SSD), a hard drive, etc. One or more of a Hard Disk Drive (HDD), a Static Random Access Memory (SRAM), a Random Access Memory (DRAM), or a Cloud Drive. combination, but not limited to this. (4) Second information device 14: The second information device 14 can be, for example, one of a mobile phone, a tablet computer, a personal computer, etc. Preferably, the second information device 14 is a portable mobile device and is used with program APP to execute subsequent technical features. The second information device 14 includes a second communication unit 141 and a second processor 142. The second communication unit 141 is used for information connection with the sensing device 11 and the server 13, and Obtain the identification code of the sensing device 11; the second processor 142 can generate a private key corresponding to the aforementioned public key based on the identity characteristics and the first key generation function, and transmit the identification code and the private key through the second communication unit 141. Sent to server 13.

Please refer to "Figure 2" and "Figure 3", which are method flow charts (1) and (2) of the present invention. Please also refer to "Figure 1". As shown in the figure, the encrypted multimedia information management method of the present invention It is divided into two parts. One is the step of encrypting the multimedia information M, and the second is the step of decrypting the multimedia information M. The details are as follows: (1) A card opening step S1: A first information device 12 sends an identification code request to the sensing device 11. After receiving it, the sensing device 11 returns an identification code I to the first information device 12; wherein, it can be through the first information device 12. A communication unit 121 transmits data to the wireless communication element 111 based on technologies such as Near-field communication (NFC) or Radio Frequency Identification (RFID); as shown in "Figure 4", it is the embodiment of the present invention. Implementation diagram (1) of the implementation diagram, a first user uses the first information device 12 to retrieve the identification code I from the card-like sensing device 11; preferably, if the sensing device 11 successfully receives the identification code I request, The sensing device 11 changes color or exhibits a luminous state. (2) A first encryption step S2: the first information device 12 generates a public key K_L based on an identity feature F of a second user; where the identity feature F can be, for example, a fingerprint, a phone number, or personal information. Data, such as: ID card number, birthday, special anniversary, etc., or self-set password; as shown in "Figure 5", which is a schematic diagram (2) of the implementation of the present invention, the first information device 12 uses the second user's The even-numbered digits of the ID card pass through a first key generation function to generate a public key K_L with asymmetric encryption, and as shown in "Figure 6", it is a schematic diagram (3) of the implementation of the present invention. The public key K_L is used for multimedia Information M is encrypted for the first time. (3) A file creation step S3: The first information device 12 uploads the multimedia information M, the identification code I and a time condition T1 that have completed the first encryption step S3 to a server 13, and uploads the multimedia information M and the identification code I establish association, as shown in "Fig. 7", which is a schematic diagram (4) of the implementation of the present invention. The first user sets a time condition T1 through the first information device 12, and as shown in "Fig. 8", it is a schematic diagram (4) of the present invention. In the implementation diagram (5), the first information device 12 uploads the time condition T1, the first encrypted multimedia information M, the identification code I to the server 13; preferably, the first information device 12 can further upload a View limit sent to server 13. (4) A second encryption step S4: As shown in "Figure 9", which is a schematic diagram (6) of the implementation of the present invention, the server 13 provides the identification code I and the time condition T1 as input data, and based on a second The key generation function generates a key K_E for symmetric encryption. Refer to "Figure 10", which is a schematic diagram (7) of the implementation of the present invention. The server 13 uses the key K_E to complete the first encryption of multimedia information. M performs the second encryption.

The above is a step in which a first user uses the first information device 12 to first encrypt the multimedia information M to be sent to the second user, and the second local user obtains the sensor device 11 and wants to decrypt and receive the multimedia information. When the information is M, continue the following steps, and please refer back to "Figure 3": (1) A decryption request step S5: As shown in "Figure 11", which is a schematic diagram (8) of the implementation of the present invention, a second information device 14 sends an identification code request to the sensing device 11, and the sensing device 11 returns a The identification code I is sent to the second information device 14; preferably, if the sensing device 11 successfully receives the identification code I request, the sensing device 11 changes color or displays a luminous state. (2) An identity verification step S6: The second information device 14 uses an identity feature F of the second user as input data and generates a private key K_U corresponding to the public key K_L based on the first key generation function. The second information device 14 transmits the private key K_U to the server 13, and the server 13 uses the identification code I to filter out the corresponding multimedia information M; as shown in "Figure 12", it is a schematic diagram (9) of the implementation of the present invention. Use The second information device 14 inputs the ID card number of the second user as the identity feature F, and can generate a private key K_U corresponding to the aforementioned public key K_L, as shown in "Figure 13", which is a schematic diagram of the implementation of the present invention ( 10), transmit the current time point T2, identification code I, and private key K_U to the server 13. (3) First decryption step S7: Please refer to "Figure 14" ~ "Figure 15", which are schematic diagrams (11) ~ (12) of the implementation of the present invention. The server 13 uses the identification code I and the current time Point T2 is used as input data, and a key K_E is generated based on the second key generation function, and the first decryption is performed using the key K_E. (4) A second decryption step S8: Please refer to "Figure 16", which is a schematic diagram (13) of the implementation of the present invention. The server 13 uses the private key K_U to decrypt the multimedia information M for the second time, and in After the decryption is completed, the multimedia information M is sent to the second information device 14. When the number of times the server 13 sends the multimedia information M to the second information device 14 reaches the limit of the number of views, the server 13 deletes the multimedia information M or rejects the multimedia information M. decryption request.

In order to clearly express the above technical content, the following uses the first scenario, birthday congratulations, as an example: User A wants to send a birthday congratulations video to user B, user A can first record the birthday congratulations video with the first information device 12, Holding another sensing device 11 and capturing the identification code I, user A uses user B's name as the identity feature F to generate the public key K_L, and then encrypts the birthday greeting video for the first time, and The first encrypted birthday video, identification code I, and user A will set the time condition T1 on user B's birthday, etc., and are sent to the server 13. The server 13 uses the identification code I and uses User B's birthday is used as the input data to generate a key K_E, and a second encryption is performed. The above completes the setting of the birthday congratulation video; on the birthday, User B can take out the gift from User A The sensor device 11 of the user B sends a decryption request to the sensor device 11 and retrieves the identification code I from the second information device 14 of the user B. The user B then inputs the identity feature F from the second information device 14 and enters the name of the user B. As input data, a private key K_U corresponding to the public key K_L is generated, and then the second information device 14 transmits the identification code I, the private key K_U, and the current time point T2 to the server 13, and the server 13 uses The identification code I filters out the birthday congratulation video corresponding to it, and then uses the received time point T2 and the identification code I to generate the golden key K_E, which is used to perform the first decryption. After the decryption is successful, the received private key can be used K_U performs the second decryption. When the second decryption is also successful, the server 13 sends the birthday congratulations video to the second information device 14 of user B. The second information device 14 can play the birthday congratulations video.

Please refer to "Figure 17", which is another embodiment of the present invention. As shown in the figure, the encrypted multimedia information management system and implementation method of the present invention have a smart contract unit 123 in the first information device 12. The contract unit 123 provides a smart contract that records a contract private key as a time condition, and a contract public key corresponding to the contract private key. Before the smart contract is executed, the server 13 uses the contract public key to perform the second step. Therefore, the multimedia information M cannot be decrypted for the first time before the contract is performed; and when the smart contract is performed, the server 13 first decrypts the multimedia information M with the contract private key, and then uses the smart contract to decrypt the multimedia information M. Re-encrypting the multimedia information M for the second time when the contract is fulfilled means that the multimedia information M can be decrypted for the second time or even completely decrypted to obtain the content of the multimedia information M after the execution of the smart contract is completed.

In order to clearly express the technical content of the above-mentioned another embodiment, the second scenario will be used as an example of a will: User C wants to write a will and use a living contract to plan his affairs. He uses the living contract and the encrypted multimedia of the present invention. The information management system and implementation method first create a public will, and also create multimedia information for each beneficiary. The public will records the identity characteristics of each beneficiary that are to be decrypted, such as: each beneficiary and user C Specific memories, secrets, or agreements, etc., and thereby generate a public key to encrypt each multimedia information for the first time, and use the smart contract to record the public will, the time condition is immediate, and a contract private key to set the user When C passed away, the smart contract was executed, and the multimedia information was encrypted for the second time with a smart contract public key; when user C passed away, the smart contract was executed, and the server obtained the contract private key to decrypt the multimedia information. After that, the time condition recorded in the smart contract is "immediately", and the second encryption is performed. In this way, user C does not have to worry about the will being disclosed in advance, or the will being leaked due to human intention, negligence, etc.

From the above, it can be seen that the encrypted multimedia information management system and its implementation method of the present invention can be applied to congratulatory multimedia information, message messages, information message delivery, etc., which includes asymmetric encryption using user identity characteristics. , private keys, and symmetric encryption keys that use physical sensing devices and time conditions. By encrypting the multimedia information to be transmitted for the first time with the public key, and then encrypting it for the second time with the gold key, it can be ensured The server cannot decrypt through identification codes and time conditions. Moreover, when the encrypted multimedia information is stolen, it cannot be decrypted only through time conditions and identity characteristics, and the second user cannot decrypt at an incorrect time point. Opening multimedia information, thus ensuring that only the second user with the sensing device opens the multimedia information within a specified time; in addition, the present invention further includes a smart contract that can re-encrypt and decrypt the multimedia information when triggered under specified circumstances. The operation greatly expands the application; accordingly, after the present invention is implemented, it is indeed possible to achieve an encrypted multimedia information management system that can only open multimedia information content within a specific time interval and has good encryption protection. Its implementation method.

However, the above are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Anyone skilled in the art can make equal changes and modifications without departing from the spirit and scope of the present invention. , should all be covered by the patent scope of the present invention.

To sum up, the invention has the patent requirements of "industrial applicability", "novelty" and "progressivity"; the applicant has submitted an invention patent application to the Jun Bureau in accordance with the provisions of the Patent Law.

1: Encrypted multimedia information management system 11: Induction device 111:Wireless communication components 112: Color conversion component 12:The first information device 121: First communication unit 122: First processor 123:Smart contract unit 13:Server 131: Processing unit 132:Memory unit 14: Second information device 141: Second communication unit 142: Second processor S1: Card opening steps S2: Document creation steps S3: First encryption step S4: Second encryption step S5: Decryption request step S6: Identity verification step S7: First decryption step S8: Second decryption step I: identification code F: Identity characteristics T1: time condition T2: time point K_L: public key K_U: private key K_E:Key M:Multimedia information

Figure 1 is a system architecture diagram of the present invention. Figure 2 is a flow chart (1) of the method of the present invention. Figure 3 is a flow chart (2) of the method of the present invention. Figure 4 is a schematic diagram (1) of the implementation of the present invention. Figure 5 is a schematic diagram (2) of the implementation of the present invention. Figure 6 is a schematic diagram (3) of the implementation of the present invention. Figure 7 is a schematic diagram (4) of the implementation of the present invention. Figure 8 is a schematic diagram (5) of the implementation of the present invention. Figure 9 is a schematic diagram (6) of the implementation of the present invention. Figure 10 is a schematic diagram (7) of the implementation of the present invention. Figure 11 is a schematic diagram (8) of the implementation of the present invention. Figure 12 is a schematic diagram (9) of the implementation of the present invention. Figure 13 is a schematic diagram (10) of the implementation of the present invention. Figure 14 is a schematic diagram (11) of the implementation of the present invention. Figure 15 is a schematic diagram (12) of the implementation of the present invention. Figure 16 is a schematic diagram (13) of the implementation of the present invention. Figure 17 is a schematic diagram (14) of the implementation of the present invention.

1: Encrypted multimedia information management system

11: Induction device

111:Wireless communication components

112: Color conversion component

12:The first information device

121: First communication unit

122: First processor

13:Server

131: Processing unit

132:Memory unit

14: Second information device

141: Second communication unit

142: Second processor

Claims (10)

An encrypted multimedia information management system for a second user to check a first user's multimedia information, including: A sensing device including a wireless communication element storing an identification code; A first information device is in information connection with the sensing device and a server, including a first communication unit for obtaining the identification code, and a first processor for utilizing the second user's The identity feature, based on a public key generated by a first key generation function, encrypts the multimedia information for the first time, associates the multimedia information with the identification code, and associates the multimedia information with a time condition Upload to this server; A second information device is in information connection with the sensing device and the server, including a second communication unit for obtaining the identification code, and a second processor for converting the identity characteristic based on the first The key generation function generates a private key corresponding to the public key, and transmits the identification code and a private key of the second information device to the server; and The server includes a memory unit that stores the identification code, the time condition, and the multimedia information, and also includes a processing unit for using the identification code and the time condition to generate a second key generation function based on the identification code and the time condition. key, and performs a second encryption on the multimedia information that has been encrypted for the first time; the processing unit uses the identification code to filter out the corresponding multimedia information; the processing unit uses the current time point and the identification code, based on The second key generation function generates the key to decrypt the multimedia information for the first time; the processing unit uses the private key to decrypt the second time and sends the multimedia information to the second information after the decryption is completed. device. The encrypted multimedia information management system as described in claim 1, wherein the first information device includes a smart contract unit for transmitting a smart contract that records a contract private key as the time condition to the server; The server first performs a second encryption with a contract public key, and when the smart contract is executed, the server first decrypts the multimedia information with the contract private key, and then re-encrypts the multimedia information with the time when the smart contract was executed. Perform a second encryption. The encrypted multimedia information management system as described in claim 1, wherein the server is used to encrypt the time condition or the time point using a time-based one-time password algorithm. The encrypted multimedia information management system as described in claim 1, wherein the first information device is used to limit the number of views sent to the server, and the number of times the server sends the multimedia information to the second information device reaches When the number of views is limited, the server deletes the multimedia information or rejects the decryption request of the multimedia information. The encrypted multimedia information management system as claimed in claim 1, wherein the sensing device includes a color conversion element, so that when the sensing device receives the identification code and the request is successful, the color conversion element changes color or displays a luminous state. . An encrypted multimedia information management method for a second user to check a first user's multimedia information, including: A card opening step: a first information device sends an identification code request to a sensing device, and the sensing device returns an identification code to the first information device; A first encryption step: the first information device uses an identity characteristic of the second user to generate a public key based on a first key generation function, and uses the public key to encrypt the multimedia information for the first time; A file creation step: the first information device uploads the multimedia information and a time condition that have been encrypted for the first time to a server, and associates the multimedia information with the identification code; 1. The second encryption step: the server uses the identification code and the time condition to encrypt the multimedia information that has completed the first encryption for the second time; A decryption request step: a second information device sends a decryption request to the sensing device and obtains the identification code; An identity verification step: the second information device transmits the identification code and a private key of the second information device to the server, and the server uses the identification code to filter out the corresponding multimedia information; A first decryption step: the server performs the first decryption based on the current point in time and the identification code; and A second decryption step: the server performs a second decryption using the private key, and sends the multimedia information to the second information device after the decryption is completed. The encrypted multimedia information management method as described in request item 6, wherein in the file creation step, a smart contract is used as the time condition, and in the second encryption step, the server first uses a contract public key The second encryption is performed, and when the smart contract is executed, the server first decrypts the multimedia information using a contract private key, and then re-encrypts the multimedia information for the second time based on the time when the smart contract is executed. The encrypted multimedia information management method as described in claim 6, wherein the server encrypts the time condition or the time point using a time-based one-time password algorithm. The encrypted multimedia information management method as described in claim 6, wherein in the file creation step, the first information device transmits a limit on the number of views to the server, and in the second decryption step, the server When the number of times the server sends the multimedia information to the second information device reaches the limit of the number of views, the server deletes the multimedia information or rejects the decryption request of the multimedia information. The encrypted multimedia information management method as described in claim 6, wherein during the card opening step or the decryption request step, if the sensing device successfully receives the identification code request, the sensing device changes color or displays luminescence. form.

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