现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2015年
8期
43-46
,共4页
数字签名%代理签名%公钥替换攻击%计算复杂度
數字籤名%代理籤名%公鑰替換攻擊%計算複雜度
수자첨명%대리첨명%공약체환공격%계산복잡도
digital signature%proxy signature%public key substitution attack%computational complexity
谷利泽等人提出一个新型代理数字签名方案,鲁荣波等人对其进行了分析与改进,杨丽等人证明了改进方案不满足公钥替换攻击,给出了攻击方法,并在此基础上提出一种改进的代理签名方案。分析杨丽等人提出的新方案,指出该方案增加了计算复杂度,并提出两种改进的代理数字签名方案。实验结果表明改进的方案具有较强的安全性也能够防止公钥替换工具,并减少了计算复杂度,提高了效率。
穀利澤等人提齣一箇新型代理數字籤名方案,魯榮波等人對其進行瞭分析與改進,楊麗等人證明瞭改進方案不滿足公鑰替換攻擊,給齣瞭攻擊方法,併在此基礎上提齣一種改進的代理籤名方案。分析楊麗等人提齣的新方案,指齣該方案增加瞭計算複雜度,併提齣兩種改進的代理數字籤名方案。實驗結果錶明改進的方案具有較彊的安全性也能夠防止公鑰替換工具,併減少瞭計算複雜度,提高瞭效率。
곡리택등인제출일개신형대리수자첨명방안,로영파등인대기진행료분석여개진,양려등인증명료개진방안불만족공약체환공격,급출료공격방법,병재차기출상제출일충개진적대리첨명방안。분석양려등인제출적신방안,지출해방안증가료계산복잡도,병제출량충개진적대리수자첨명방안。실험결과표명개진적방안구유교강적안전성야능구방지공약체환공구,병감소료계산복잡도,제고료효솔。
Professor Gu Li?ze,et al made a new scheme of proxy digital signature,which was analyzed and improved by Lu Rong?bo,et al. However,Yang Li,et al proved that the improved scheme can not satisfy the public key substitution attack, pointed out the attacking method,and made a new improved proxy signature scheme based on the previous schemes. In this pa?per,the new scheme proposed by Yang Li,et al is analyzed,the calculation complexity of theirs is pointed out,and two im?proved proxy signature schemes are proposed based on the analysis of the previous schemes. The new schemes have strong secu?rity,can prevent any public key replacement tool,reduce complexity and increase efficiency.