A certificateless signature scheme provably secure in the standard model is analyzed. It points out that the scheme is insecure.
通过对一个标准模型下可证安全的无证书签名方案进行分析，指出该方案是不安全的。
The certificateless signature scheme can suffer from public key replacement attack so that any one can forge a valid signature on any message.
该方案能受到替换公钥攻击，以至于任何人都能对任何消息成功伪造签名。
Aiming at the construction problems of the certificateless signature with special properties, the construction methods of certificateless message recovery signature is researched.
针对具有特定性质无证书数字签名的构造问题，研究无证书消息可恢复签名的构造方法。
In this paper, we construct a new certificateless undeniable signature by using bilinear pairings and zero-knowledge proof protocol.
本文用双线性对和零知识证明协议，构造了一种新的无证书不可否认签名方案。
Based on the merits of the Certificateless Public Key Cryptography and combine the proxy signature, we give a proxy signature schemes and its' secure is also based on the DLP.
在结合无证书密码体制的优点与代理签名的有关知识时，本文还给出了一种代理签名的无证书数字签名。
Ring signature has high computational efficiency and strong anonymity, so the the key management can be solved by using the certificateless public key system.
而环签名具有运算效率高、匿名性强的特点，利用无证书公钥系统可解决密钥管理问题。
In order to eliminate the use of certificates in traditional proxy signature and the key-escrow problem in identity-based proxy signature, the notion of certificateless proxy signature was introduced.
无证书的代理签名方案在保留基于身份的代理签名不需要证书的优点下，成功地解决了基于身份的代理签名方案中的密钥托管问题。
Because of the large amount of calculation for pairing, a partially blind signature scheme without pairing was proposed, which combined the new certificateless public key cryptosystem.
由于对运算的计算量较大，结合新的无证书的公钥密码体制，提出一种无需对运算的无证书部分盲签名方案。
This paper proposes a certificateless verifiable ring signature scheme. It is based on the concepts of certificateless cryptosystem and verifiable ring signature scheme.
将无证书的密码体制与可验证环签名相结合，提出一个无证书的可验证环签名方案。
This paper analyzes the security of a certificateless proxy signature scheme and shows that it is insecure against the public key replacement attack in certificateless cryptosystems.
对无证书代理签名方案进行安全性分析，指出该方案对于公钥替换攻击是不安全的，并给出具体的攻击方法。
Two secure schemes of certificateless ring-signature and certificateless ring proxy signature based on CL-PKC are proposed.
基于CL- PK C提出了两个安全的无证书环签名方案和无证书环代理签名方案。
A new efficient certificateless parallel multi-signature scheme was proposed based on the advantages of certificateless public key cryptosystem and the demands of digital multi-signature.
基于无证书公钥密码体制的优点和多重数字签名的要求，设计了一个高效的无证书并行多重签名方案。
A new efficient certificateless parallel multi-signature scheme was proposed based on the advantages of certificateless public key cryptosystem and the demands of digital multi-signature.
基于无证书公钥密码体制的优点和多重数字签名的要求，设计了一个高效的无证书并行多重签名方案。
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