PUBLIC-KEY ENCRYPTION METHOD FOR PROVIDING EFFICIENT DOUBLE DECRYPTION FUNCTION AND PROTECTING PRIVACY OF USER

摘要

A public-key encoding method for providing a dual decoding function and protecting privacy of a user is provided to discriminatively give an access right to a secret key for decoding to a user and a system administrator. A public-key encoding method for providing a dual decoding function and protecting privacy of a user includes the steps of: creating a key parameter through an encoder of a communication device. The key parameter includes the public-key and a secret key for encoding(S100); encoding ordinary messages through the encoder based on a created key parameter(S300); performing a decoding mode(S500); and decoding the ordinary messages based on a preset algorithm according to a decoding subject by a decoder of the communication device.