Identity based aggregate signcryption method

Abstract

The invention discloses an identify based aggregate signcryption method. The identify based aggregate signcryption method includes the following steps that (1) a key management center sets system public parameters and produces user keys; (2) each sending party signcrypts respective data to produce a signcryption text; (3) an aggregate party aggregates all signcryption texts to produce aggregated signcryption texts; (4) a receiving party verifies the aggregated signcryption texts. According to the identify based aggregate signcryption method, three parameters in the signcryption texts of each sending party are aggregated, and the data size of the entire signcryption texts is totally the same as that of a single signcryption text; meanwhile, the receiving party can achieve verification of all the signcryption texts only through once verification operation, and the calculated amount of the verification of all the signcryption texts is basically equivalent to that of the verification of the single signcryption text; confidentiality, integrality, and authentication can be simultaneously achieved in the aspect of safety; the defect of low efficiency caused by the fact that each sending party sends the signcryption texts and the receiving party verifies the signcryption texts one by one in traditional methods is overcome, and higher transmission efficiency and computational efficiency are achieved.

Description

technical field [0001] The invention belongs to the field of data confidentiality and authentication in a communication network, in particular to an identity-based aggregatable signcryption method. Background technique [0002] With the continuous development and wide application of computer communication network technology, secure communication among multiple users has become one of the main communication methods, especially in wireless network communication, multi-user communication secure communication is the most important communication method. It is used in vehicle network communication, wireless local area network communication, sensor network and other occasions. In the uplink communication of these networks, multiple senders send different data to the same receiver respectively, and the receiver receives and processes them in sequence. This takes up a lot of bandwidth, especially the receiver takes up a lot of communication resources to receive each sender's data. ...

AI Technical Summary

Problems solved by technology

However, currently existing signciphertext aggregation signcryption schemes can only aggregate one of the three parameters of the signciphertext, that is, mainly aggregate the data related to the signature, but cannot aggregate the data related to the ciphertext, so Although the total amount of signed ciphertext data after aggregation has been reduced, it will still increase rapidly with the increase in the number of senders, and the scalability is relatively poor

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