关键词: 安全模型 多安全策略 多级安全策略 最小特权 机若性保护 完整性保护

Abstract: MLS security policy aims at only confidentiality assurance, with less consideration on integrity assurance and weakness in channel control policy. And its way to handle the trusted subjects has many security shortcomings. Moreover, increasing diversity of

Key words: Security model, Multiple security policies, Multilevel security policy, Least privilege, Confidentiality assurance, Integrity assurance