security n. 1.安全(感);安穩(wěn);穩(wěn)妥;平安。 2.確實;確信;把握;可靠性;安心。 3.【軍事】防御物。 4.保護;防護;保衛(wèi);防御 (against; from); 治安,安全防衛(wèi)。 5.【法律】保證,擔保;抵押。 6.擔保品;保證金;借用證 (for)。 7.擔保人;保證人。 8.〔pl.〕證券;債券;公債;股票。 9.〔古語〕疏忽;大意。 public security 公安。 public security organs 保衛(wèi)機關;公安機關。 What security can you offer for it 你對這件事能拿什么做擔保呢? S- is the greatest enemy. 疏忽[麻痹大意]是最大的敵人。 give security against 保護;使無…之憂。 go [enter into, give] security for 做…的保人。 in security 安全。 in security for 作…的擔保。 on good security 有可靠的抵押。
Abstract : this paper introduces some practical security models and their actions and characteristics 文摘:介紹信息安全模型的作用和特征以及幾種目前比較實用的安全模型。
Security administrator can make flexible combinations of security modules according to practical security requirements , and administrate the system remotely by using graphical interfaces 其基于電子證書的身份認證、可根據實際需要對安全模塊進行靈活配置、遠程管理等功能尤為突出。
It is observed that the system has high practical security , fast encryption ( decryption ) speed and excellent reliability against strong channel noise , and its overall cryptographic properties are considerably better than known chaotic cryptosystems 研究表明,該系統具有高安全性、快加密(解密)速度和強抗信道噪聲能力,它的密碼性質優(yōu)于所有已知的混沌密碼系統。
In the end , a reliable and practical security policy , in which container based declarative security is dominant and programmatic security is complementary , is given respectively to the web tier , ejb tier and eis tier of the system according to the system framework and deployment environment 最后還結合系統框架和部署環(huán)境分別針對j2ee的網絡層、 ejb層和eis層的不同情況制定了以基于容器的聲明性安全為主,以可編程性安全為補充的安全策略。
In this paper , the belief logic system gny and it ' s related implementation tool spearii are utilized , ssl protocol is a focused instance , then the detailed analysis procedure from initial protocol model to various evolution protocol models is given , later the final evolution protocol model and ssl protocol are contrasted and thus the security analysis conclusion is drawn for ssl . during the analysis procedure two practical security authentication solutions are designed based on evolution protocol models 本文采用著名的信念邏輯gny邏輯系統及其相關的形式化工具spear ,以ssl協議為分析實例,詳細闡述了從初始協議模型到各個進化協議模型的分析過程,并將最終的進化模型與ssl協議作比較,給出ssl協議的安全分析,同時在分析過程中以協議模型為基礎設計了兩個實用的安全認證方案。
Concentrating on security analysis and design of block ciphers , five principal achievements have been obtained in this dissertation : 1 . using differential - nonlinear cryptanalysis , truncated differential - linear cryptanalysis and integral cryptanalysis respectively , three attacks of reduced - round safer + + are given ; 2 . based on the survey of provable security and practical security of block ciphers , a block cipher model of spn cipher containing feistel structure is proposed 分別利用差分-非線性密碼分析、截斷差分-線性密碼分析、積分密碼分析三種不同的密碼分析方法,對safer + +進行了密碼分析; 2在對分組密碼的可證明安全性和實際安全性研究的基礎上,提出了一個嵌套feistd結構的sp型分組密碼的模型。