【導(dǎo)讀】數(shù)字簽名是起到身份認證、核準(zhǔn)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】 6970。 [5] 賴 溪松 .計算機密碼學(xué)及其應(yīng)用 [M].北京 :國防工業(yè)出版社 ， 2020。 [6] 宋震 .密碼學(xué) [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(xué)出版社， 2020。 [9] Mao W著，王繼林等譯 .現(xiàn)代密碼學(xué)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(xué)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(yán)謹(jǐn)?shù)闹螌W(xué)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(xué)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(xué)院 系完成的。文中除了特別加以標(biāo)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(xué)院或其他教學(xué)機構(gòu)的學(xué)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(xué)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(xué)院有關(guān)保管使用學(xué)位論文的規(guī)定，其中包括： （ 1）學(xué)校有權(quán)保管并向有關(guān)部門遞交學(xué)位論文的原件與復(fù)印件。 （ 2）學(xué)?？梢圆捎糜坝?、縮印或其他復(fù)制方式保存學(xué)位論文。 （ 3）學(xué)?？梢詫W(xué)術(shù)交流為目的復(fù)制、贈送和交換學(xué)位論文。 （ 4）學(xué)?？稍试S學(xué)位論文被查閱或借閱。 （ 5）學(xué)?？梢怨紝W(xué)位論文的全部或部分內(nèi)容（保密學(xué)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(xué)院。 特此聲明！ 作者簽名： 年 月 日 They both knew it. And if she hadn39。t won an ecology essay petition and a prize of places for two aboard Sea Shepherd, neither of them would be here. She rested her hand on Gary39。s shoulder and looked at him cheekily. You may be a pain in the neck sometimes, but I39。m glad you39。re ing with me. As Southampton slid astern, Sea Shepherd nosed into the thumping waters of the English Channel. At that moment the sun squinted through a crack in the cloud. On the horizon the sky39。s grey paint was peeling, revealing blue. A good omen? Gary followed Susan down the panionway. See you at dinner, he said, before entering the cabin he shared with Norman. As one of the girls, Susan had Vanessa for a room mate. Next door were Yves and Darren. Susan hesitated outside her cabin, fiddled with her cardigan, ran a b through her hair. Then, head held high, she made her entrance. Vanessa wasn39。t there. Susan relaxed, smiling at herself. The smile faded fast. She39。s taken the bottom bunk! I was here first. Susan stared, glared at the fancy nightdress laid out on the pillow. Did she have the nerve to move it? No, not quite. Fuming, she started to unpac k. Sweaters, Tshirts, jeans, shorts and a dress. She yanked open the wardrobe door. A row of eye catching outfits hung neatly on hangers. It39。s like a fashion store, Susan muttered, shoving the hangers aside to make space for her own clothes. In the bathroom she opened the mirrorfronted cabi on the wall. It was crammed with bottles and jars. Perfume, shampoo, creams ... Susan slammed the cabi shut and pulled a face in the glass. Meanwhile Gary was trying to make friends with Norman. Hard wor k. Norman proved to be a very serious young man, much given to using long words. Must39。ve swallowed a dictionary, Gary thought. B ut he kept up the conversation. T hen the studious teenager produced a pac k of cards and proceeded to do a series of conjuring tric ks that made Glly could almost smell his breathmustard gas and roses. It was a wrong number. Billy hung up. There was a soft drink bottle on the windowsill. Its label boasted that it contained no nourishm ent whatsoever. The American fliers turned in their uniforms, became high school kids. And Hitler turned into a baby, Billy Pilgrim supposed. That wasn39。t in the movie. Billy was extrapolating. Everybody turned into a baby, and all humanity, without exception, conspired biologically to produce two perfect people named Adam and Eve, he supposed. Billy saw the war movies bac kwards then forwardsand then it was time to go out into his backyard to meet the flying saucer. Out he went, his blue and ivory feet crushing the wet salad of the lawn. He stopped, took a swig, of the dead champagne. It was like 7Up. He would not raise his eyes to the sky, though he knew there was a flying saucer from Tralfamadore up there. He would see it soon enough, inside and out, and he would see, too, where it came from soon enoughsoon enough. Overhead he heard the cry of what might have been a melodious owl, but it wasn39。t a melodious owl. It was a flying saucer from Tralfamadore, navigating in both space and time, therefore seeming to Billy Pilgrim to have e from nowhere all at once. Somewhere a big dog barked. The saucer was one hundred feet in diameter, with portholes around its rim. The light from the portholes was a pulsing purple . The only noise it made was the owl song. It came down to hover over Billy, and to enclose him in a cylinder of pulsing in purple light. Now there was the sound of a seeming kiss as an airtight hatch in the bottom of the saucer was opened. Down snaked a ladder that was outlined in pretty lights like a Ferris wheel. Billy39。s will was paralyzed by a zap gun aimed at him from one of the portholes. It became imperative that he take hold of the bottom rung of the sinuous ladder, which he did. The rung was electrified, so that Billy39。s hands locked onto it hard. He was hauled into the airloc k, and machinery closed the bottom door. Only then did the ladder, wound onto a reel in the airloc k, let him go. Only then did Billy39。s brain start working again. There were two peepholes inside the airloc kwith yellow eyes pressed to them. There was a speaker on the wall. The Tralfamadorians had no voice boxes. They municated telepathicary. They were able to talk to Billy by means of a puter and a sort of electric an which made every Earthling speech sound. 39。Wele aboard, Mr. Pilgrim,39。 said the loudspeaker. 39。Any questions?39。 Billy licked his lips, th