一种无证书签密方案的安全性分析及改进
Security Analysis and Improvement of a Certificateless Signcryption Scheme
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摘要: 利用无证书密码体制的安全模型,分析了一种无证书数字签密方案,发现其存在安全性缺陷.针对这些安全性缺陷,对原方案进行了改进.分析结果表明,该方案具有安全保密性、不可伪造性、不可否认性,改进的方案是有效安全的Abstract: A kind of certificateless digital signcryption scheme was analyzed by using the certificateless cryptosystem security model,and the security flaws were found.Furlhermore,the improved scheme was proposed to eradicate the security flaws.The analysis results show that the improved scheme is characterized by its confidentiality,unforgeability,nonrepudiation,which implies that the improved scheme is safe and effective
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Keywords:
- certificateless cryptosystem /
- bilinear pairing /
- confidentiality /
- unforgeability
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[1] 蔡伟艺，杨晓元． 可公开验证的高效无证书签密方案［J］． 计算机工程，2011，37( 17) : 108-110． [2] 王会歌，王彩芬，易玮，等． 高效的无证书可公开验证签密方案［J］． 计算机工程，2
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