可签名的

Teather:But I can't find your father's john Hancock at all.

老师：可我在上面根本没找到你爸爸的亲笔签名啊。

Using key exchange protocol and HK signature,a publicly verifiable and directed signcryption scheme is proposed.

基于密钥交换协议与HK签名方案，提出了一个带指定接收者的可公开验证签密方案。

To overcome the shortcomings of present divisible e-cash scheme, for the first time, the thesis introduces group signature into divisible e-cash system and view the e-cash withdrawn by users as the group certificate issued by group administrator. As all of ancestor nodes of the payment node arc blindly transformed, the divided parts from one e-cash are no longer linkable.

针对现有可分电子现金方案存在的诸多缺陷，本文首次将适合于大群的群签名思想引人到可分电子现金中，将用户提取电子现金视为群管理员颁发给用户的群证书，通过将支付节点前的祖先节点进行盲化使得同一电子现金分割后的不同分割单元间不再有可链接性。

Animproved authenticated encryption scheme with public verifiability is proposed.

对一个消息可恢复式签名方案的安全性进行了分析，成功给出了两类伪造攻击。

Phones Vertu Signature S Design will be offered in versions from white or yellow gold and stainless steel in the construction of the keyboard used rubies .

手机 vertu 签名设计，将可在版本由白色或黄色的黄金和不锈钢在建造该键盘使用红宝石。

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。

The former can be used to construct an efficient randomized verifiably encryptedsignature or the optimistic fair exchange protocol.

前者可用于实现一种高效的、随机化的可验证加密签名方案或优化的公平交换协议。

The novel scheme employs verifiably encrypted RSA signatures in the extended integer ring that is elaborately constructed. The security and efficiency of the newly devised scheme are also proved and examined.

在此基础上，利用精心构造的扩环中可公开验证的、加密的RSA签名，提出了一种完全基于RSA签名方案的优化公平交换协议，并对其安全性和效率进行了证明和分析。

In structure, in order to offer the agility of scheme implementation, it adopts hierarchical design, combining the virtue of hybrid Identity-Based public key schemes, which makes signature and encryption arithmetics configured and decouples them.

在结构上，采用了层次式的设计，结合混合的基于身份公钥方案的优点，使得基于身份的签名和加密的功能可配置，并且解决了加密、签名算法的紧耦合问题，为方案的实现提供了灵活性。

If you have paid the said tax, youmay apply for cash rebating against your air ticket,boarding card, boat ticket and personal signature at the departure tax inquiry office at Line D on the 7th floor ofthe Departure Building of Hong Kong Airport.Alternatively, you may also fill the Application Form for the Departure Tax Rebating and Rebating and mail it together with all necessary documents to the civil aviation office within four weeks after your departure

如果您确实已缴付该税款，您可到设在香港国际机场七楼离境大楼的离境税询问处，凭机票、登机证、船票及您的签名申请退回现金；或者也可选择填写&追溯申请豁免缴付离境税和退还税款&表格，连同一切所须文件于离境后四星期内寄到民航处申请。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。