Bilinear pairing multi-message multi-receiver signcryption method, Internet of things communication system

Abstract

The invention belongs to the technical field of Internet of Things communication, and discloses a publicly verifiable non-bilinear pairing multi-message multi-receiver signcryption method, an Internet of Things communication system, and a key generation center KGC and a private key generation center PKG are respectively initialized; The sender under the identity-based encryption system and the receiver under the certificate-free encryption system register separately; the sender ID s Select n recipients, construct a signcrypted ciphertext, broadcast the ciphertext, and complete the signcryption; calculate the verification parameters according to the elements in the signcrypted ciphertext, and then verify whether it is true; the receiver calculates the decryption key, compares and finds its own The ciphertext message is decrypted to obtain the plaintext message, and the decryption process is completed. Since the sender belongs to an identity-based encryption system and the receiver belongs to a certificate-free encryption system, it realizes secure authentication communication in a heterogeneous environment, reduces the number of number multiplication operations based on elliptic curves, and adopts a public verification method, which greatly improves the security of the signature. The efficiency of the encryption process and the decryption process.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things communication, and in particular relates to a publicly verifiable non-bilinear pairing multi-message multi-receiver signcryption method and an Internet of Things communication system. Background technique [0002] Currently, the closest existing technology: In the Internet of Things environment (such as Internet of Vehicles, Smart Grid, etc.), in order to protect the personalized customization, security and efficiency of the communication system, and to ensure that the session content is only correct for the designated authorized recipients Decryption, non-designated authorized receivers cannot be decrypted correctly, which requires the support of secure multi-message multi-receiver technology. [0003] At present, signcryption technology (Signcryption) can realize encryption and signature in one logical step, and the efficiency is much higher than the traditional method of "signature +...

AI Technical Summary

Problems solved by technology

[0007] (1) Different IoT devices are in different encryption systems, how to efficiently complete identity authentication between heterogeneous IoT devices is a technical problem

[0008] (2) Many efficient signcryption methods do not consider the heterogeneity of the Internet of Things, and the communication efficiency of the multi-message multi-receiver signcryption method under the heterogeneous Internet of Things is very low, so how to improve the heterogeneous Signcryption efficiency under the Internet of Things is a technical problem

[0009] (3) In the existing multi-message multi-receiver signcryption method, how to realize secure public verification and ensure communication security and privacy is also a technical problem

[0010] Difficulties in solving the above technical problems: (1) The authorization and identity authentication of heterogeneous IoT devices is an important reason for the difficulty in the implementation of heterogeneous IoT technologies; The problem of low efficiency of the signcryption method to ensure security is also a problem that needs to be solved in the communication of the Internet of Things

Images