【導(dǎo)讀】數(shù)字簽名是起到身份認證、核準數(shù)據(jù)完整性的一種信息安全技術(shù)。RSA數(shù)字簽名體制使用的是RSA公開密鑰密碼算法進行數(shù)。六，分析了RSA數(shù)字簽名的安全性，指出了RSA數(shù)字簽名的發(fā)展方向。RSA算法的基本概念和原理.........

　　

【正文】 （ 4）： 6970。 [5] 賴 溪松 .計算機密碼學及其應(yīng)用 [M].北京 :國防工業(yè)出版社 ， 2020。 [6] 宋震 .密碼學 [M].北京：中國水利水電出版社， 2020。 [7] 張 周 .我國企業(yè)開始重視網(wǎng)絡(luò)安全 [J].計算機世界 A9版 ,2020，（ 3）： 2528。 [8] 張仕斌，譚三 .網(wǎng)絡(luò)安全技術(shù) [M]. 北京： 清華大學出版社， 2020。 [9] Mao W著，王繼林等譯 .現(xiàn)代密碼學理論與實踐 [M].北京：電子工業(yè)出版社， 2020。 [10] Atreya M等著，賀軍等譯 .數(shù)字簽名 [M].北京：清華大學出版社， 2020。 [11] 王 勇 .RSA公開密鑰密碼體制的密鑰生成研究 [J] .計算機應(yīng)用研究， 1998，（ 3）： 2124。 致 謝 本文是在趙攀老師和盛志偉老師的熱情關(guān)心和指導(dǎo)下完成的，他們淵博的知識和嚴謹?shù)闹螌W態(tài)度使我受益匪淺，對順利完成本課題起到了極大的作用。在此向他表示我最衷心的感謝！ 在論文完成過程中，本人還得到了張仕斌老師和陳偉同學的熱心幫助，本人向他們表示深深的謝意！ 最后向在百忙之中評審本文的各位專家、老師表示衷心的感謝！ 作者簡介： 姓 名： 官麗梅 性別： 女 出生年月： 1985 年 3 月 18 日 民族：漢 Email: 聲 明 本論文的工作是 2020 年 2 月至 2020 年 6 月在成都信息工程學院 系完成的。文中除了特別加以標注地方外，不包含他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包含為獲得成都信息工程學院或其他教學機構(gòu)的學位或證書而使用過的材料。除非另有說明，本文的工作 是原始性工作。 關(guān)于學位論文使用權(quán)和研究成果知識產(chǎn)權(quán)的說明 本人完全了解成都信息工程學院有關(guān)保管使用學位論文的規(guī)定，其中包括： （ 1）學校有權(quán)保管并向有關(guān)部門遞交學位論文的原件與復(fù)印件。 （ 2）學?？梢圆捎糜坝?、縮印或其他復(fù)制方式保存學位論文。 （ 3）學?？梢詫W術(shù)交流為目的復(fù)制、贈送和交換學位論文。 （ 4）學?？稍试S學位論文被查閱或借閱。 （ 5）學?？梢怨紝W位論文的全部或部分內(nèi)容（保密學位論文在解密后遵守此規(guī)定）。 除非另有科研合同和其他法律文書的制約，本論文的科研成果屬于成都信息工程學院。 特此聲明！ 作者簽名： 年 月 日 This boothwn outside, each car became a single anism which ate and drank and excreted through its ventilators. It talked or sometimes yelled through its ventilators, too. In went water and loaves of blackbread and sausage and cheese, and out came shit and piss and language. Human beings in there were excreting into steel helmets, which were passed to the people at the ventilators, who dumped them. Billy was a dumper. The human beings also passed canteens, which guards would fill with water. When food came in, the human beings were quiet and trusting and beautiful. They shared. Human beings in there took turns standing or lying down. The legs of those who stood were like fence posts driven into a warm., squirming, fatting, sighing earth. The queer earth was a mosaic of sleepers who nestled like spoons. Now the train began to creep eastward. Somewhere in there was Christmas. Billy Pilgrim nestled like a spoon with the hobo on Christmas night, and he fell asleep, and he traveled in time to 1967 againto the night he was kidnapped by a flying saucer from Tralfamadore. Four Billy Pilgrim could not sleep on his daughters wedding night. He was forty four. The wedding had taken place that afternoon in a gaily striped tent in Billy39。s backyard. The stripes were orange and bla ck. Billy and his wife, Valencia, nestled like spoons in their big double bed. They were jiggled by Magic Fingers. Valencia didn39。t need to be jiggled to sleep. Valencia was snoring like a bandsaw. T he poor woman didn39。t have ovaries or a uterus any more. They had been removed by a surgeonby one of Billy39。s partners in the New Holiday Inn. There was a full moon. Billy got out of bed in the moonlight. He felt spooky and luminous felt as though he were wrapped in cool fur that was full of static electricity. He looked down at his bare feet. They were ivory and blue. Billy now shuffled down his upstairs hallway, knowing he was about to be kidnapped by a flying saucer. The hallway was zebra striped with darkness and moonlight. The moonlight came into the hallway through doorways of the empty rooms of Billy39。s two children, children no more. They were gone forever. Billy was guided by dread and the lack of dread. Dread told him when to stop. Lack of it told him when to move again. He stopped. He went into his daughter39。s room. Her drawers were dumped. her closet was empty. Heaped in the middle of the room were all the possessions she could not take on a honeymoon. She had a Princess telephone extension all her ownon her windowsill Its tiny night light stared at Billy. And then it rang. Billy answered. There was a drunk on the other end. Bi 39。Who killed me? he would ask. And everybody knew the answer., which was this: Billy Pilgrim.39。 Listen on the tenth night the peg was pulled out of the hasp on Billy39。s boxcar door, and the door was opened. Billy Pilgrim was lying at an angle on the cornerbrace, selfcrucified, holding himself there with a blue and ivory claw hooked over the sill of the ventilator. Billy coughed when the door was opened, and when he coughed he shit thin gruel. This was in accordance with the Third Law of Motion according to Sir Isaac Newton. This law tells us that for every action there is a reaction which is equal and opposite in direction. This can be useful in rocketry. The train had arrived on a siding by a prison which was originally constructed as an extermination camp for Russian prisoners of war. The guards peeked inside Billy39。s car owlishly, cooed calmingly. They had never dealt w ith Americans before, but they surely understood this general sort of freight. They knew that it was essentially a liquid which could be induced to flow slowly toward cooing and light. It was nighttime. The only light outside came from a single bulb which hung from a polehigh and far away. All was quiet outside, except for the guards, who cooed like doves. An d the liquid began to flow. Gobs of it built up in the doorway, plopped to the ground. Billy was the nexttolast human being to reach the door. The hobo was the last. The hobo could not flow, could not plop. He wasn39。t liquid any more . He was stone. So it goes. Billy didn39。t. want to drop from the car to the ground. He sincerely believed that he would shatter like glass. So the guards helped him down, cooing still. T hey set him down facing the train. I t was such a dinky train now. There was a lootive, a tender, and three little boxcars.