签名

The distributive signature and cheat-proof secret sharing scheme are used during the course of the signature in this scheme. Compared with recent RSA digital signature,this scheme has a higher security.

该方案在签名过程中溶入了部分签名和防欺骗的秘密共享方案，相比于现有的RSA签名方案，该方案具有更高的安全性。

It is based on the difficulty of computing the discrete logarithm modulo for a composite number and the factorization problem of large integer.The size of the group signature and verification time of the group signature are equivalent to that of an individual signature.

该方案的安全性是基于求离散对数和RSA大整数因式分解的困难，其群签名长度和群签名的验证时间只相当于一般个人签名。

The group signature scheme based on discrete logarithm problem can be used to share public parameter of the system among different organizations.

群签名设计的一个重要进展是，给出群公钥和群签名的长度不依赖于群成员的个数的群签名方案。

These schemes do not only achieve strong distinguishability and non-repudiation properties but also achieve strong unforgeability property.

这两个方案不仅具有强可区分性、强不可否认性，而且具有强不可伪造性，能抵抗原始签名人假冒代理签名人、伪造代理签名攻击。

Unfortunately,all the transitive signature schemes available are undirected ones and can only be used in the case of equivalence relation.

已有的传递签名方案都是无向的，只适用于对等价关系签名，提出有向传递签名方案是个留待解决的公开问题。

Blind group signature scheme is group signature scheme with the characteristic of blind signature, which is widely applied in electronic commerce and electronic government.

摘要盲群签名方案是具有盲签名特点的群签名方案，在电子商务和电子政务中都有重要的应用。

The secret hash digital signature is a new siganture method that combines the ideas of RSA public-key algorithm, MD5 one-way hash function and permutation code at the same time.

保密散列数字签名算法利用RSA公钥密码体制的原理、MD5单向散列函数和排列码加密的思想，构造了一种能够快速实现数据保密、数字签名的签名方案。

An efficient identity-based threshold signature scheme is proposed in this paper based on a variant of Hess's signature.

基于Hess签名的一个变体签名方案，提出了一个有效的基于身份的门限数字签名方案。

One important application of public key cryptosystem is digital signature, and signature scheme based on sharing secret is a good method to enhance the security of signature system.

公钥体制的一个主要应用是数字签名，而基于秘密共享的签名方案是提高数字签名系统安全性的好方法。

Digital signature ; proxy digital signature ; discrete logarithmic problems ; elliptic curve discrete logarithmic problems ; elliptic curve digital signature algorithm

数字签名；代理数字签名；离散对数；椭圆曲线离散对数；椭圆曲线数字签名

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。