Content Extraction Signature Scheme Based on DLP
Caifen Wang · Jisuanji gongcheng · 2013
According to the certificateless signcryption scheme proposed by Zhu Hui et al,this paper proposes a strongly secure Content Extraction Signature(CES) scheme without bilinear operations.The user's public key is bound to the partial private key generation algorithm and signature algorithm,which reduces the possibility of user's public key substitution attack.By using secure hash function of a non-collision,it can resist existence unforgeable under adaptive chosen-message attacks.Based on Discrete Logarithm Problem(DLP) is intractable,and its security is proved under Random Oracle Model(ROM).Compared with similar programs,the scheme's signature and interception algorithm reduces one exponentiation computation,the computational efficiency is improved.