查询词典 attack

Finally, simulation experiments of two algorithms are carried out, results demonstrate that the watermark is invisible and robust against some attacks, such as crop, common noise and JPEG compress. It also has certain counteractant ability against a comprehensive attack.

仿真结果表明，实现的水印具有不可见性，而且对于常见的噪声、剪切、JPEG压缩具有较强鲁棒性，对于综合性攻击也具有一定的抵抗能力。

Certainly, and also exactly at this kind of attack to invade with countercharge shot, invade and anti of continuously struggle the inside, and the safe technique of network is just can completely quick of development.

当然，也正是在这种攻击与反攻击，侵入与反侵入的不断斗争中，网络安全技术才得以全面迅速的发展。

Firstly, this paper puts forward an improved authentication and key distribution scheme for internet environment, in which we adhibit multilevel authentication center, encryption technology of DES, RSA and one-way function to actualize the safety of communication among the different user on network and reduces the workload of the authentication institution; at the same time, this scheme can also assure the security of network. Besides, it use the temporary symbol and the responds" sign of both-side correspondent to replace time stamp and applies them to internet communication to countercheck "rebroadcast attack and accordingly resolves the problem that it needs synchronization for network clock.

本文在首先提出一种改进的Internet网络环境下的认证及密钥分配方案，该方案考虑采用了多级认证中心，DES、RSA和单向函数加密机制，实现了网络上不同用户间的安全通信，降低了网上认证机构的工作量，同时也能够保证网络的安全性；并用通信双方的临时标志和响应者标识来代替时间戳应用于Internet通信中以防止"重播"攻击，从而解决了以往需要网络时钟同步这一难题。

And this is where his attack on "earmarks" is so counterproductive.

这是他的攻击，"专项拨款"是这样产生反作用。

According to the characteristics of network counterwork, discussed methods of network attack and network defense.

针对网络对抗的特点，探讨了网络攻击手段以及网络防御手段。

Likewise, when it is applied to improve the character code and voluntary recovery, more breakthroughs will be made in the counterwork of attack and defense.

同样，将特征码技术应用于防病毒软件的特征码改进和主动防御，就能在攻与防的对抗中取得更大的突破。

If I disagree with their ideas or behavior, I will do so courteously, without personal attack.

如果我不认同他们的想法或行为，我会礼貌的拒绝而不会进行人身攻击。

When there is a urgency,attack the glass cover and press the button.

遇到紧急情况时，击碎玻璃罩并摁下按钮。

This is because the material in cowpox (a disease affecting the udders of cows), was injected into people to protect them against an attack of smallpox.

这是因为牛痘中的物质曾被注射给人体来保护人体免受天花的侵袭。

It is US policy to promote democracy, to attack terrorism and to crack down on nuclear proliferation.

美国的政策是要发展民主，打击恐怖主义，抑制核扩散。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。