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A certificateless encryption scheme based on blockchain
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DOI：10.1007/s12083-021-01147-w.png)
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摘要
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The normal public key encryption system has complicated certificate management and key escrow problems, while the certificateless encryption system does no longer require certificates, which reduces storage space and communication costs. As a result, the certificateless encryption system has acquired enormous attention from the academic community, but there are two types of attacks that stop it from being broadly used in manufacturing and life. Because of its tamper proof and autonomy, blockchain is helpful to resist these two kinds of attacks. Therefore, this paper proposes an encryption scheme combining blockchain technology and certificateless encryption technology. This scheme can not only make certificateless encryption scheme resist these two attacks, but also decrease the storage space of blockchain and resolve the complex certificate management problems. Related experimental consequences prove that our scheme can correctly resist the two types of attacks confronted by means of certificateless encryption systems and resolve the key escrow problem.
Keyword:
Public key encryption
Blockchain
Certificateless encryption
Certificate management
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