CRYPTOGRAPHY KEY MANAGEMENT SYSTEM AND METHOD THEREOF

摘要

The present invention can prevent a malicious use of a terminal user or an internal attacker by dividing an encryption key of a user terminal into separate encryption key pieces and managing the separate encryption key pieces in order to provide a software based stable key management for an encryption key used in the user terminal in a platform operation environment such as a DRM, a game, Internet banking, and on-line shopping requiring reliability of a terminal by a server. Further, when a security key is upgraded due to a safety policy and other reasons, not in the case of exposing the security key, only a security key module can be separately updated without destroying a public key authentication.