METHOD OF ENCRYPTING AND DECRYPTING AN OPTICAL CODE, ELECTRONIC DEVICE FOR PERFORMING THE METHOD, AND METHOD AND SYSTEM OF PROCESSING A PUBLIC KEY FOR ENCRYPTING AND DECRYPTING AN OPTICAL CODE

摘要

PURPOSE: An optical code encoding/decoding method, an electronic device performing the same, a public key processing method for optical code and a system are provided to prevent information reading of a reader by encoding a private key read through photographing an encoded optical code. CONSTITUTION: If the registration of a public key is requested from an optical code issuer, a public key registration server(630) registers a public key supplied from the optical code issuer, a management code and permission time. A code matrix issuance server(650) transmits a code matrix corresponding to the code to the issuer. If a receiver requests transmission of the public key, a member authentication server(620) checks out the authority of the receiver. [Reference numerals] (611) Member DB; (612) Terminal authentication certificate DB; (613) Public key DB; (614) Managing code DB; (615) QR code usage period DB; (616) Authority DB in each QR code user; (617) Code matrix storage DB; (620) Member authentication server; (630) Public key registration server; (640) Public key management server; (650) Code matrix issuing server