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An encryption and decryption method and system based on elliptic curve algorithm

An elliptic curve algorithm, encryption and decryption technology, which is applied in the public key and key distribution of transmission system and secure communication, can solve the problems of unfavorable promotion and application of mixed encryption algorithm, low efficiency of mixed encryption algorithm, large amount of calculation, etc.

Active Publication Date: 2019-09-24
南京十方网络科技有限公司
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  • Abstract
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Problems solved by technology

[0003] Due to the limited resources of the body area network, more hybrid encryption algorithms combining symmetric encryption algorithms and asymmetric elliptic curve encryption algorithms are used. The efficiency of the encryption algorithm is low, which is not conducive to the promotion and application of the entire hybrid encryption algorithm in the body area network

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  • An encryption and decryption method and system based on elliptic curve algorithm
  • An encryption and decryption method and system based on elliptic curve algorithm
  • An encryption and decryption method and system based on elliptic curve algorithm

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Embodiment Construction

[0054] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.

[0055] figure 1 It shows the implementation flowchart of the encryption and decryption method based on the elliptic curve algorithm provided by the present invention, which specifically includes the following steps:

[0056] In step S101, at the acquisition node B, according to the input physiological information m, a digital signature S and a symmetric encrypted ciphertext F of the physiological information are generated k (m) and the symmetric key K.

[0057] In this step, the selected prime number field F q An elliptic curve E on p (a,b), a base point P on the elliptic curve and its prime order n, the privat...

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Abstract

The present invention belongs to the body area network technology field, and provides an elliptic curve algorithm-based encryption and decryption method and system. The method comprises the steps of at an acquisition node B, according to the inputted physiological information m, generating a digital signature S, a symmetric encryption ciphertext Fk(m) of the physiological information and a symmetric key K; disassembling the symmetric key base on a binary system, defining K=K1K2, and carrying out the elliptic curve algorithm-based encryption operation by taking the disassembled symmetric keys K1 and K2 as the bases to obtain a recombined key ciphertext CK; sending the data containing the digital signature S, the ciphertext Fk(m) and the recombined key ciphertext CK to an aggregation node A. The method encrypts the physiological information, also enables the efficiency of a hybrid encryption algorithm to be improved.

Description

technical field [0001] The invention relates to the technical field of body area networks, in particular to an encryption and decryption method and system based on an elliptic curve algorithm. Background technique [0002] WBAN is a human-centered network composed of sensors placed on the surface of the human body or implanted inside the human body and some mobile terminals. Most of the data transmitted in the network is the physiological information of the patient, which is related to the life safety of the patient. Due to the openness of the wireless channel, the interaction of information in the entire body area network is vulnerable to illegal attacks, and the information of the body area network is highly sensitive. Once the correctness of physiological data is affected, it will lead to unpredictable and serious consequences. Therefore, related encryption algorithms should be adopted to ensure the security of communication. [0003] Due to the limited resources of the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L9/08H04L9/30
Inventor 朱斌吴小林胡雨彤冉亚梅朱帅吴小同陈书然
Owner 南京十方网络科技有限公司