covert channel 中文意思是什麼
covert channel
解釋
隱蔽通道-
Usually, it s impossible to close up every covert channel in a system
通常，關閉系統中的每個秘密通道是不可能的。 -
A subliminal channel is a covert communication channel to send a message to an authorized receiver. this channel is constructed in the output crypto - data of an applied public - key cryptosystem such as digital signature, authentication, and so on. the message can not be discovered by any unauthorized receivers
閾下通道是指在基於公鑰密碼技術的數字簽名、認證等應用密碼體制的輸出密碼數據中建立起來的一種隱蔽通道，除指定的接收者外，任何其他人均不知道密碼數據中是否有閾下消息存在。 -
Linux has been more and more widely used today, but the secure degree of linux is low, so in this paper, we produce a linux - compatible secure operating system, named slinux. its design object is in accordance with the requirements of the fourth level, i. e. structured protection level, of gb17859. for this purpose, we introduce such mechanism, as identification & authentication, mac, least privilege manage, trusted path, password management. object reuse, covert and channel analysis. furthermore, we have some innovation, introduce the mechanism of network security and audit
本論文的研究目的是對linux進行安全增強，設計一個新的安全操作系統，即slinux安全操作系統，其設計目標是滿足gb17859第四級《結構化保護級》的需求，為此我們在原有linux操作系統的基礎上引入了標識與鑒別機制， mac機制，最小特權管理機制，可信通路機制，密碼處理機制，客體重用機制以及隱通道分析機制，同時還進行了創新，引入了網路安全保護機制和審計機制。 -
Cooking channels - from the paper how to cook a covert channel is a set of two python scripts ( cgi and client ) allowing to build a communication channel over http cookies
顧名思義，這是一種隱藏通道工具。他提供幾種可行方法來實現允許在已被網路訪問控制系統授權的數據流上創建並建立任意數據流傳輸通道。 -
Third, an analysis model aiming at finding out potential covert channel existing in implementation model is proposed
之後，分析整個模型可能存在的隱通道，提出分析模型的設計。 -
Through analyzing the generating condition of covert channel, this paper compares two important analysis methods of covert channel, provides better improving approach
通過分析隱通道產生條件，對兩種重要的隱通道的分析方法進行了比較，提出了較為科學的改進思路。 -
Covert channel is the key problem of the research of information flow security, so domestic and overseas scholars research the problem of information security through analyzing covert channel
隱通道是信息流安全性研究的關鍵問題，國內外學者通過分析隱通道對信息安全問題進行了研究。 -
Sixth, we introduce some helpful investigations about some key technologies of high level secure operating system design, such as covert channel analysis and trusted path, and describe their coarse - gained implementation in the real system
第六，對高等級安全操作系統設計的其它幾個關鍵問題，包括隱蔽通道分析處理、可信路徑等做了有益的探索，給出了其在系統中實現的大致方案。 -
Forth, depending on a limited syntax language, a research on the method and process of the semi - formal specification of the top level function is developed. this top level specification paves the way for the system verification and the covert channel analysis
第四，藉助一種受限的句法語言，研究了對系統頂層功能進行半形式化規范的方法和過程，而頂層功能規范則為系統驗證、隱蔽通道分析等后繼工作奠定了基礎。 -
We use polyinstance to eliminate the covert signal channel in the multilevel secure database, so we must change the traditional relational data modal
本文引入了多實例以解決多級數據庫中的隱蔽信號通道，因此必須對傳統的關系模型進行根本變革。 -
Turbo code is regarded as the milestone in channel encoding theory history for its performance closing to shannon limit, which makes us covert to decrease the numbers of light weight code ( error coefficient ) from increasing the minimum hanming weigh. the research and analysis are concentrated on the following : 1
Turbo碼具有近shannon限的性能，它的出現被看作是通道編碼理論發展史上的一個里程碑，它使人們設計通道編碼的方法從增加碼的最小漢明距離轉向了減少低重量碼字的個數（錯誤系數） 。
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