METHOD FOR SECURITY AND THE SECURITY APPARATUS THEREOF

摘要

A security method and a security apparatus using the same are provided to perform set binding by having only one encryption key for each set. A security method includes the steps of: checking an encryption key flag(S310); generating an encryption key if the encryption key is enabled(S330); decoding the encrypted data by using the stored manufacturer key; and re-encrypting the decoded data by using the generated encryption key. The encryption key flag represents whether the encryption key is stored or not.