指出了这两种密码系统存在的缺陷，并且成功地实施了选择明文攻击。
The drawbacks of the two chaotic cryptosystems are pointed out respectively, and chosen plaintext attacks are carried out successfully.
但仍存在一些隐患，例如：重放攻击、密码猜测、会话中选择明文攻击等等。
But it still has some security hidden troubles, for instance: replay attack, password guessing, inter-session chosen plaintext attacks.
该文提出一个高效的全序有向传递签名方案，并证明该方案在选择明文攻击下是安全的。
In this paper, an efficient total ordering directed transitive signature scheme is proposed and its security against adaptive chosen-message attack is proved.
分析表明，该文所设计的加密算法不但能抵抗唯密文攻击，而且能有效地抵抗选择明文攻击。
The analysis indicates that the encryption algorithm not only can effectively resist cipher-text-only attack but also chosen-plaintext attack.
理论分析和仿真实验表明，本文提出的算法具有较高的安全性能，特别是在统计攻击、差分攻击和选择明文攻击能力方面具有很好的抗攻击性能。
Theoretical analysis and simulated experiment show that, the scheme has excellent performances against attacks, in particular statistical attack, differential attack and chosen plain image attack.
为密码字段选择的输入类型为text，这意味着用户键入该字段的任何内容都会以明文形式显示在屏幕上。
The input type selected for the password field is text, which means that anything the user types into that field appears as plaintext on the screen.
如果选择“simple”，则ApacheDS采用基于口令的简单身份验证，这意味着口令以明文方式在网络上传递。
If you select "simple," ApacheDS employs simple password-based authentication, meaning the password travels in plaintext form over the network.
如果选择“strong”，那么用户口令以散列值形式(而不是明文形式的实际口令)传递给ApacheDS进行身份验证。
If you select "strong," a hashed value of the user's password (instead of the actual password in plaintext form) travels to ApacheDS for authentication.
第六个参数接受出现在建议选择窗口中的画面说明文字。
The sixth parameter accepts the display label that is shown in the proposal selection window.
他们一般是法规遵循体系的中立者，这表示只要选择理由是具有证明文件的且公平的，他们将不会偏向任何一种标准。
They are generally compliance framework neutral, which means that they will not be biased for or against a particular standard, as long as the selection rationale is documented and justified.
这种决定包括软件主要结构的设计决策，特定部分的选择以及指导的说明文档等等。
Such decisions could represent key structural design decisions, the selection of particular patterns, the specification of guidelines, and so on.
馆长的一些选择似乎有些独辟蹊径，他附注的说明文字增色甚少，而且有时夸大其词。
Some of the curator’s choices seem a bit odd and the written descriptions, which add little, are occasionally heavy-handed.
在BindingFiles面板上单击add，就可以选择外部绑定声明文件。
By clicking Add in the binding files pane, you can select external binding declaration files.
论述了在儿童食品的选择上，给人第一视觉效果的包装色彩更能打动消费者，然后才是图形和说明文字。
On the choosing of child food, the thing which gives people first visual effect was packaging color which can better move customer than just graph and explanation writing.
如果攻击者不能彼此区分两个加密，即使攻击者知道(或已经选择)相应的明文，则密码系统被称为语义安全。
A cryptosystem is called semantically secure if an attacker cannot distinguish two encryptions from each other even if the attacker knows (or has chosen) the corresponding plaintexts.
馆长的一些选择似乎有些独辟蹊径，他附注的说明文字增色甚少，而且有时言不达意。
Some of the curator's choices seem a bit odd and the written descriptions, which add little, are occasionally heavy-handed.
选完滤镜之后，你可以选择加上说明文字。
After choosing your filter, you have the choice of adding a caption.
注：如果你选择了签证做付款方式、签证要求你复印件一份，你选择商业身份证明文件在附录a。
NOTE: if you have chosen Visa as a payment option, Visa requires that you attach a copy of the business identification documents that you selected under Addendum a.
在圜形方孔的钱币上注明文字，标示其价值和通行的年代区域，是历史的必然选择。
Won the first to use state money - is the era of the Warring States, Qin Yan and ultimately from the Qin Dynasty unified the country, won the money as a unified text vector.
在圜形方孔的钱币上注明文字，标示其价值和通行的年代区域，是历史的必然选择。
Won the first to use state money - is the era of the Warring States, Qin Yan and ultimately from the Qin Dynasty unified the country, won the money as a unified text vector.
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