PUBLIC KEY BASED ENCRYPTION METHOD AND KEY GENERATION SERVER

摘要

A public key-based encryption method is disclosed. The public key-based encryption method includes the steps of: (a) generating a public constant and a master secret key by a server; (b) generating a partial secret key of a receiving terminal and transmitting the partial secret key to the receiving terminal by the server; (c) selecting a secret value by the receiving terminal; (d) generating the secret key by the receiving terminal; (e) generating the public key by the receiving terminal; (f) generating a cipher text by encrypting a message and transmitting the cipher text to the receiving terminal by a transmitting terminal; and (g) decoding the cipher text by the receiving terminal. Accordingly, the present invention can provide an efficient encryption method by not performing a pairing operation.