CAJ | 학술논문

密级标识添加与管理是实现多级安全的基础，多级安全系统中要求密级标识不可剥离、不可篡改。本文针对二值文档提出了一种基于数字水印的密级标识添加方法，首先基于中国剩余定理生成了多级标识，然后利用二值文档数字水印技术和加密技术实现了二值文档与密级标识的不可剥离性、不可篡改性和密级标识与用户权限的对应性，最后给出了该方法的安全性分析。
밀급표식첨가여관리시실현다급안전적기출，다급안전계통중요구밀급표식불가박리、불가찬개。본문침대이치문당제출료일충기우수자수인적밀급표식첨가방법，수선기우중국잉여정리생성료다급표식，연후이용이치문당수자수인기술화가밀기술실현료이치문당여밀급표식적불가박리성、불가찬개성화밀급표식여용호권한적대응성，최후급출료해방법적안전성분석。
Adding and management of secret level identification are the basis for multi--level security. Multi--level security system requires that secret level identification should be non--tampering or non --stripping. This paper presents a secret level identification adding method for binary document based on digital watermarking as the following steps： generating multi--identification based on the Chinese Remainder Theorem; realized the identification of non--tampering or non--stripping with binary document and corresponding to User rights by adopting the binary digital watermarking and encryption technology ; and finally, the paper gives the security analysis of this method.