Blockchain-based medical information attribute encryption access control method
An attribute encryption and access control technology, which is applied in the blockchain field, can solve the problems of inability to trace accountability, cannot support patients' independent control of data access control at the same time, and the credibility of attribute authorization needs to be further improved, so as to meet the requirements of safe access. Effect
Active Publication Date: 2022-02-25
矩阵纵横(北京)科技有限公司
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Problems solved by technology
However, there are still the following problems in the combination of attribute encryption access control technology based on ciphertext policy and blockchain technology: (1) It is impossible to trace the authorization process of multiple attribute authorization agencies to accountability, and the credibility of attribute authorization needs to be further improved. Improvement; (2) It cannot support the access of patient self-control data and the access control of multiple attribute authorization institutions at the same time
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[0030] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
[0032]Attribute-Based E...
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The invention discloses a blockchain-based medical information attribute encryption access control method, which includes the following steps: a patient encrypts personal medical data based on a ciphertext strategy attribute and stores it in the blockchain; a visitor sends multiple data through a smart contract. Each attribute authority provides the corresponding attributes and waits for verification. If the verification is successful, the visitor is also granted an attribute token through the smart contract; when the patient has enough attribute tokens, the patient requests data information access through the smart contract; if the patient has enough attribute tokens When it is determined that the attribute set of the visitor satisfies the established access policy, the visitor has the right to access the medical data information of the patient. The method can realize access control of multiple attribute authorization agencies and retrospective accountability to the attribute authorization agencies, and enable patients to independently control access to medical data.
Description
technical field [0001] The invention relates to the technical field of block chains, in particular to a block chain-based encryption access control method for medical information attributes. Background technique [0002] With the rapid development of the economy and the continuous improvement of social informatization, data is showing explosive growth, and the value of data has increased significantly. Massive data is increasingly being created and urgently needs safe and reliable sharing, especially in the medical industry. Important and sensitive information such as patient health data, diagnosis and treatment, and electronic insurance policies are stored in the institution. Medical privacy information is related to the vital interests of patients. In reality, patients' private information is leaked from time to time, and once these sensitive information is leaked, it will bring various adverse effects to the lives of patients. According to statistics from the Industrial ...
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IPC IPC(8): H04L9/40H04L9/32G16H10/60G06F21/60H04L67/1097
CPCH04L63/10H04L63/0876H04L63/0435H04L9/3213G16H10/60G06F21/602G06F21/604H04L67/1097G06F2221/2107G06F2221/2141H04L9/50
Inventor 郑丽娟刘佳琪李敦岳张翠肖马国磊
Owner 矩阵纵横(北京)科技有限公司