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What is IBE?
IBE (Identity Based Encryption) algorithm. 200 1, Don Boneh and Matthew Franklin proposed an identity-based encryption algorithm, which canceled the CA organization proved by the third party. However, due to the need to retain a large number of user parameters, it still needs the support of user parameter library. The system relies on the online operation of the database, which has low running efficiency, thousands of processing capacity and limited application scope. However, it has been used in secure telephone system, not PKI.

In 1984, adi shamir, one of the famous inventors of RSA public key system, suggested that directly using identity as public key without relying on digital certificate might be the best way to simplify public key encryption system. In 2000, Dr. Dan Bona and Dr. Matt Franklin.

A major breakthrough was made in mathematics, and the first practical ID-based digital signature system (IBE system) was invented. IBE (Identity-based Encryption) is a public key encryption algorithm, and any character string can be used as a valid public key.