需要金幣： 1000 個金幣 |
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| 轉換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字數(shù)：6907 |  | |
| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要數(shù)字簽名,是保證數(shù)據(jù)可靠性,實現(xiàn)認證的重要工具。它在信息安全、身份認證、數(shù)據(jù)完整性、不可否認性以及匿名性等方面有著廣泛的應用。 其中Schnorr數(shù)字簽名方案,它的安全性是基于離散對數(shù)的困難性。其產(chǎn)生簽名的速度快,簽名長度短,具有安全性好運行效率高的特點。 數(shù)字簽名中,一旦簽名密鑰被泄漏,由該密鑰簽名的文檔就變得無效。為了減少這種損失，本文提出Schnorr數(shù)字簽名方案的狀態(tài)化思想方法,即將密鑰分割成兩塊存儲,在每次使用時先對各塊進行更新。依次使用各塊做簽名操作,最終得到用完整私鑰簽名的結果。 并對該方案的安全性進行分析,可以使其密鑰的保存和使用更加安全,能有效抵抗對簽名方案的密鑰泄露攻擊。 關鍵詞：Schnorr數(shù)字簽名體制；密鑰封裝；狀態(tài)化的思想方法；安全性分析
Abstract：The digital signatures, is to ensure data reliability, and it is also an important tool to achieve certification. In the information security、authentication、 data integrity、 non-repudiation and anonymity, it have a wide range of applications. Schnorr digital signature scheme, whose security is based on the difficulty of discrete logarithm. It produces signature quickly, and the length of the signature is short, with good security and high efficiency. In the digital signature, if the signature key is leaked, the document signed by the key becomes invalid. In order to reduce such losses, this paper present the state method of Schnorr digital signature scheme, the key is divided into two stores, first of all, each time you use the block must to be updated. Use the block in order to do the signature operation, and finally get the results with the full private key signed. Finally, else analyzed the security and efficiency of the scheme, proving that the scheme is secure and effective. Key words: Schnorr digital signature scheme；key encapsulation; state method; threshold scheme; security analysis
本文借鑒了前向安全的特性,提出了一種基于Schnorr數(shù)字簽名方案的狀態(tài)化方法.該方案實現(xiàn)私鑰的分割,其思想是把私鑰分成兩塊存儲,并在每次使用時先更新各塊的狀態(tài).之后依次使用各塊做簽名或解密操作,并最終得到用完整的私鑰簽名的結果,從而實現(xiàn)數(shù)據(jù)安全和權力制約.并且,該方案具有前向安全的特征，具有較強的抵抗密鑰泄露攻擊和防止內部欺騙的功能.狀態(tài)化思想可以使私鑰的保存和使用更加安全.
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