Key seed matrix and certificateless anti-collision key generation method based on matrix

Abstract

The invention discloses a key seed matrix and a certificateless anti-collision key generation method based on the key seed matrix. The key generation method comprises the following steps: a key generation center generating a 200-bit random number; calculating a public key of the equipment part according to the random number; the key generation center calculating a ZA value according to the equipment identifier and the public key seed matrix, and calculating a Z value according to the ZA value and the partial public key of the equipment; selecting and adding eight elements according to the coordinate of the Z value mapped to the private key seed matrix to obtain an equipment identification private key, and calculating an equipment identification public key according to the equipment identification private key; the key generation center calculating an equipment complete public key according to the equipment identification public key, and calculating an equipment complete private key according to the random number and the equipment identification private key; and after the complete equipment public key and the complete equipment private key are obtained, the key generation center issuing the key pair to the equipment end through the secure channel. According to the method, the advantages of a combined public key technology and a certificateless cryptosystem are combined, and the problems between the combined public key technology and the certificateless cryptosystem are solved.

Description

technical field [0001] The present invention relates to the field of information security key technology, in particular, to a method for generating a key seed matrix and a method for generating a certificate-free anti-collision key based on the matrix, in particular, to a combined key-based method for the Internet of Things A certificateless collision-proof key generation method. Background technique [0002] The core idea of ​​the combined public key technology based on the elliptic curve key system is: construct a random integer matrix as the private key seed matrix, calculate the public key seed matrix correspondingly, use the mapping algorithm to complete the correspondence between the user ID and the matrix column index, respectively use Large integer addition and ECC point addition calculate the private key and public key. Combined public key technology provides an optimized method to solve identity-based public key cryptography, but it fails to solve the linear collu...

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Problems solved by technology

[0005] The present invention proposes a key seed matrix and a non-certificate anti-collision key generati

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