签名

It adopt technique by preventing from coping screen in postil 、 siginate and seal. It can siginate for manuscript and stamper basing on PKI by 1024 RSA arithmetic,assure distinguishing and preventing disavow.It can find nonlicet sophisticate of attacker by data fingerprint,protect data facticity and integrity.

其中手写批注、签名和电子签章采取了防截屏拷贝处理技术，基于国际公认的公钥基础设施体系，通过采用RSA算法（1024位）对手写笔记和印章进行数字签名，能保证手写笔记和电子印章的可鉴别性，防止对操作的否认与抵赖，同时利用数字指纹技术能精确的发现攻击者对文档的非法篡改，以保护数据信息的真实性和完整性。

XML Signature provides integrity, authentication and nonrepudiation services the same as the traditional digital signature.

XML签名和传统数字签名一样，可以提供数据完整性、身份认证、不可抵赖性等服务。

Viewers can freely select a card and sign his name on the back of the card and bring it back to the rest of the cards. Then insert another different card into a paperlike transparent plastic card. Hand the plastic card with your thumb and index finger. In the absence of any hand action, the card in the plastic card has slowly changed into the signatured one.

观众可以随便选一张牌，在牌面签名后放回副牌之中，再把另一张不同的牌，插入到如纸张般厚的透明塑胶卡里，塑胶卡以拇指和食指拿着，手在没有任何的动作之下，在塑胶卡里的牌慢慢的转变成刚才观众所选的并签名的牌了。

We first analyze the advantages and disadvantages of ID-Based group signature and provably secure group signature.

2我们首先分析了基于身份的群签名方案和可证明安全的群签名方案的优缺点。

Because the model solution is one kind of NP difficult problem, we propose a new multinomial solution algorithm, and finally take online handwriting signature verification as example to confirm the mathematical model. For 150 test signatures that we choose randomly, the successful matching rate is 91.33%, the wrong reacceptance is 6% and the wrong reject rate is 2.67%.

由于模型的求解是NP困难问题，针对这种情况，提出了一种新的多项式的求解算法，以在线手写签名验证为例验证数学模型，然后对随机的150个测试签名进行检验，结果成功匹配率为91.33%，误纳率为6%，误拒率为2.67%。

Forward security is achieved by an evolutional parameter,which is updated with the evolution of time segment,and the group public key and members' certificates are updated along with the parameter.If a menber's private key is betrayed,the attackers can't forge the member's previous signatures.Revocation is achieved by Certificate State List,which needs the group center to update the CSL in real time,and the previous signatures of the revocative members are still valid.

前向安全性通过一个进化参数实现，进化参数随着时间段的变化而进化更新，从而使群公钥和成员证书进化更新，即使成员密钥泄露，攻击者也无法伪造该成员以前的签名；成员撤消通过证书状态列表实现，只需群中心实时更新成员证书状态列表，被撤消成员其以前的签名仍然有效。

And I can testify, only my father's name is singed by me, others are singed by "we" eleven brothers.

我可以做见证，除了我父亲的名字是由我帮他签上的，其他的签名都是弟兄们的原始签名。

On the basis of published paper, an ID-based provable secure and strong designated verifier signature scheme, a modified strong designated verifier signencryption scheme, and a modified extended aggregate signature scheme based on the supersingular elliptic curve is presented in this thesis.

在已有文献的基础上，综合形成了一种基于身份标识的超奇异椭圆曲线上的强指定验证者的数字签名方案、签密方案和可扩展的群签名方案。

That is why Sabah DAP leaders Sri Tanjong Assemblyman Jimmy Wong together with Kota Kinabalu MP Dr Hiew King Cheu had decided to lead the way by initiating an online petition at ( http://www.petitiononline.com/dapsbh09/) for all Sabahan to sign as to support DAP to legal action against SESB, which we hope to file the case beginning next month.

这就是沙巴民主行动党州主席邱庆洲博士及斯里丹戎州议员黄仕平决定发起'网站签名运动'的方式（http：//www.petitiononline.com/dapsbh09/）让所有沙巴人民上网签名以支持行动党的控诉沙电，我们希望在下个月将该控诉案采取法律行动。

A digital signature scheme is analogous to the traditional handwriting signature. Since it achieves unforgeability, integrity and non-repudiation, digital signature plays an important role in E-commerce and E-government.

数字签名是对传统手写签名的模拟，它具有防伪造、防篡改和防抵赖等特点，在电子商务和电子政务中有重要应用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。