A Trusted Electronic Medical Record Desensitization and Retrospective Method
A technology of electronic medical records and backtracking method, which is applied in the field of desensitization and backtracking of trusted electronic medical records, which can solve problems such as inability to guarantee private key information, loss of relevant information, and inability to backtrack decryption information, so as to save bandwidth resources and ciphertext length Small, efficient effect
Active Publication Date: 2022-07-08
CHINESE ACAD OF PREVENTIVE MEDICINE +1
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Problems solved by technology
However, in actual application scenarios, the information collection unit will collect electronic medical record information from multiple hospitals, and due to management problems, each hospital cannot guarantee that it can manage its own private key information, and may even lose relevant information, resulting in inability to trace back Declassified information
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[0042] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.
[0043] like figure 1As shown, the method of this embodiment is as follows.
[0044] The present invention provides a method for desensitization and backtracking of trusted electronic medical records, comprising the following steps:
[0045] Step 1: Initialization of the key generation center KGC;
[0046] Step 1.1: Set the parameter λ, and the key generation center KGC generates the corresponding cyclic group G according to the preset parameter λ p , whose order is p, and is constructed in the cyclic group G p Elliptic curve E on E, E:y 2 =x 3 +ax+b where 4a 3 +27b 2 ≠0, where a and b are two parameters generated by λ, and set a generator on the elliptic curve E as G, and randomly selec...
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The invention provides a method for desensitization and backtracking of trusted electronic medical records, and relates to the technical field of electronic medical record management. The steps of the present invention are as follows: step 1: initialization of the key generation center KGC; step 2: initialize user i, where i=n or v; step 3: user n desensitizes the sensitive information m in the electronic medical record information, After desensitization, a signcrypted ciphertext corresponding to the information m is generated, and the signcrypted ciphertext is sent to the user v; Step 4: The user v backtracks the sensitive information m; after the user v decrypts the plaintext information m, it needs to The verification is performed. If the verification is successful, the message content is complete. If the verification fails, the backtracking process fails, and the plaintext information is discarded. The method can ensure the security of data in the transmission process, and at the same time ensure that even the private key information does not affect the whole subsequent backtracking process, which increases the usability of the scheme.
Description
technical field [0001] The invention relates to the technical field of electronic medical record management, in particular to a method for desensitization and backtracking of trusted electronic medical records. Background technique [0002] The patient's electronic medical record can be used by scientific research units for disease research. However, the patient's electronic medical record contains private information, including the patient's ID number, country of birth, province of birth, year of birth, month of birth, etc. Before the medical record information is sent to the scientific research unit, the private information in the electronic medical record needs to be desensitized first, for example, the private information can be encrypted. In the follow-up research process, scientific research units may think that part of the information after desensitization is more important and need to be desensitized, that is, retrospective desensitization information. For example, ...
Claims
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IPC IPC(8): G06F21/62G06F21/64G16H10/60
CPCG06F21/6254G06F21/64G16H10/60
Inventor 王斌谢琪周洪伟张妮楠林睿凡王利朋李洪生李青山
Owner CHINESE ACAD OF PREVENTIVE MEDICINE