信阳师范学院学报（自然科学版）Issue(3)：436-438,3.DOI:10.3969/j.issn.1003-0972.2013.03.032
一个无证书签密方案的安全性分析
Cryptanalysis of a Certificateless Sgncryption Scheme
摘要
Abstract
Cryptanalysis of the certificateless verifiable signcryption scheme proposed by Zhou Min et al shows that the scheme has the following security flaws : the scheme can’t resist indistinguishability under the chosen ciphertext at -tack; the adversary can forge a valid signcryption ciphertext for any message of any user under public key replacement attacks; the malicious KGC can forge the ciphertext for any message and can also decrypt any ciphertext ; the scheme is not forward-secure because the encryption key does not contain a random number .关键词
签密/无证书密码体制/前向安全性/语义安全性/不可伪造性/公钥替换攻击Key words
signcryption/certificateless cryptography/forward security/semantic security/unforgeability/public key replacement attacks分类
信息技术与安全科学引用本文复制引用
何俊杰,魏涛,孙芳..一个无证书签密方案的安全性分析[J].信阳师范学院学报（自然科学版）,2013,(3):436-438,3.基金项目
国家自然科学基金项目（61272465）；河南省自然科学基金项目（122400550189）；河南省教育厅科学技术研究重点资助项目 （）
