METHOD AND SYSTEM FOR ID-BASED ENCRYPTION AND DECRYPTION

摘要

Disclosed are an ID-based encryption method, an ID-based decryption method, and an apparatus for performing the same. An ID-based encryption method according to an embodiment of the present invention comprises the following steps. A transmission terminal receives a transmission-side private key (a) corresponding to a transmission-side ID from a key issuing server. The transmission terminal generates a session key (S) by using the transmission-side ID, a reception-side ID, and the transmission-side private key. The transmission terminal extracts a secret key from at least a portion of the session key. The transmission terminal encrypts a message by using a predetermined encryption algorithm and the secret key.