Blockchain-based registration and verification multi-layered access control device
The blockchain-based access control device addresses the inflexibility and server dependency of existing systems by enabling flexible access control and irreversible privacy through encryption and multi-layered access modes, ensuring secure and reliable information management.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- 荻原一彦
- Filing Date
- 2025-12-18
- Publication Date
- 2026-06-12
AI Technical Summary
Existing technologies lack the flexibility to change the public status of digital information after blockchain registration, cannot implement password-protected limited access, and require external servers for secure configurations.
A blockchain-based access control device that encrypts digital information, generates a hash value, and registers it with multi-layer access control, allowing modes like URL privacy, password-protected sharing, and irreversible privacy, all without external servers.
Enables flexible control of digital information disclosure, ensures irreversible confidentiality, and provides high security using only user terminals and blockchain.
Smart Images
Figure 0003256180000001_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of using blockchain for the purpose of proving the existence of digital information and preventing tampering. In particular, it relates to an access control device that registers the hash value of digital information generated on a user terminal in a blockchain and then controls the public range and access permission for the digital information in multiple layers.
Background Art
[0002] Conventionally, as a means of proving the existence time and presence of tampering of digital information such as images, audio, videos, documents, PDFs, etc., a technology of registering data in a blockchain is known. However, in the prior art, the public range of digital information after blockchain registration is fixed, and it is difficult to control states such as non-public, limited public, or completely non-public in a stepwise and flexible manner. In addition, there was no technology equipped with a password-protected public function that allows viewing only by a specific party, or a so-called perfect lock function that irreversibly changes to a completely non-public state after registration. Furthermore, many configurations assume an external server, and a highly secure configuration that is completed only with a user terminal and a blockchain has not been established.
Summary of the Invention
[0003] The present invention adopts a configuration in which digital information generated in a user terminal is encrypted and a hash value is generated, and only the hash value and registration time are registered in the blockchain. In addition, for the digital information, multi-layer access control with the URL non-public mode as the default is performed, and it is possible to shift to the URL public mode, the password-protected URL public mode, or the perfect lock mode as needed, so that the public range after registration can be flexibly controlled.
Problems to be Solved by the Invention
[0004] This invention aims to solve the following problems. 1. The challenge is that the public status of digital information after blockchain registration cannot be flexibly changed. 2. The challenge of not being able to implement password-protected limited access or irreversible complete privacy. 3. The challenge is that a secure configuration that can be completed solely between the user's terminal and the blockchain, without involving an external server, has not yet been established. [Means for solving the problem]
[0005] The blockchain registration and verification post-multilayer access control device according to the present invention comprises an information selection unit that selects digital information such as images, audio, video, documents, and PDFs within the user terminal, and a processing unit that performs encryption processing and hash value generation for said digital information. The generated hash value and registration time are registered on the blockchain, but the actual data is not stored on the blockchain. Furthermore, with respect to the aforementioned digital information, • URL privacy mode (default) • URL sharing mode • Password-protected URL sharing mode • Perfect Lock Mode (Irreversible, Completely Private) It is equipped with a multi-layered access control unit and can be switched to any mode starting from the private mode. In the aforementioned Perfect Lock mode, digital information on the user's terminal is irreversibly destroyed, making it impossible for the user, a third party, or a business operator to access it. [Effects of the Invention]
[0006] According to this invention, it becomes possible to flexibly control the scope of disclosure of digital information after it has been registered on the blockchain, depending on its use and circumstances. Furthermore, the Perfect Lock mode enables an irreversible, completely confidential state, fundamentally eliminating the risk of information leakage. Furthermore, because it consists only of user terminals and blockchain, without using external servers, it can ensure high security and reliability. [Brief explanation of the drawing]
[0007] [Figure 1] This diagram shows the processing flow for registration and access control in a multi-layered access control system after blockchain registration verification. [Figure 2] This figure shows the configuration of the multilayer access control unit in the present invention.
Claims
1. A blockchain post-registration-certified multi-layer access control device is characterized by comprising: a registration processing unit that selects digital information on a user terminal, performs encryption processing and hash value generation, and registers the generated hash value and registration time on the blockchain; and an access control unit that performs multi-layer access control on the digital information, consisting of a URL non-disclosure mode, a URL disclosure mode, a password-protected URL disclosure mode, and a perfect lock mode.
2. The apparatus according to claim 1, characterized in that the URL non-disclosure mode is set as the default state, and it is possible to change from this mode to other access modes.
3. The apparatus according to claim 1 or 2, wherein the perfect lock mode irreversibly destroys the digital information in the terminal, thereby making it inaccessible to any entity.