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Digital signatures are crucial network security technologies. However, in traditional public key signature schemes, the certificate management is complicated and the schemes are vulnerable to public key replacement attacks. In order to solve the problems, in this paper, we propose a self-certified signature scheme over lattice. Using the self-certified public key, our scheme allows a user to certify the public key without an extra certificate. It can reduce the communication overhead anddoi:10.1155/2021/2459628 doaj:652f9bd4dcf54fd6bba3aff496d7ebfc fatcat:can4aobmnbfdth5aoukuyyyppu