【導(dǎo)讀】隨著網(wǎng)絡(luò)技術(shù)的廣泛應(yīng)用，網(wǎng)絡(luò)信息安全越來越引起人們的重視。存儲，應(yīng)用MD5算法是一個不錯的選擇。MD5算法的全稱是Message-Digest. algorithm5，是一種用于產(chǎn)生數(shù)字簽名的單項散列算法。它的作用是讓大容量。算法實現(xiàn)數(shù)據(jù)的加密存儲。文章分成五部分。狀和相關(guān)理論知識，也讓我們了解MD5的定義。重點(diǎn)是MD5的流程實現(xiàn)和封裝。在MD5算法的DLL封裝這章，主要是描述我們?yōu)槭裁匆x用封裝DLL的原。設(shè)計流程這一部分里包含讀取，修改，插入，刪除這幾個。功能的實現(xiàn)情況，并用流程圖的方式來分別描述了這四大功能模塊的實現(xiàn)過程。最后一部分顯示了系統(tǒng)測試的內(nèi)容和系統(tǒng)主要功能運(yùn)行界面圖。

　　

【正文】 d each other, Gaby didn39。 t seem to care about sex at all, and Cirocco had been irresistibly drawn to Calvin Greene. Her persistence was such that Calvin eventually went to bed with her, not just once, but three times. It didn39。t get any bette r, so before he could sense her disappointment she had cooled the relationship and let him pursue Gaby, the woman he had been drawn to from the first. Calvin was a general surgeon trained by NASA to be petent as ship39。s biologist and ecologist as well. He was blac k, but attached little importance to it, having been born and raised in O39。Neil One. He was also the only crew member who was taller than sirocco. She didn39。t think that had much to do with his appeal。 she had learned early to be indifferent to a man39。s height, since she like a big, soft asteroid. The analogy pleased her. Extending it, she watched the terminator line crawl around her to bring the hills and valleys of her front into sunlight. Cirocco liked space, reading, and sex, not necessarily in that order. She had never been able to satisfactorily bine all three, but two was not bad. New games were possible in freefall, like the one they had been playing, no hands. T hey could use feet, mouths, knees, or shoulders to position each other . One had to be gentle and careful, but with slow bites and nips anything could be done, and in such an interesting way. All of them came to the hydroponics room from time to time. Ringmaster had seven private rooms, and they were as necessary as oxygen. But even Cirocco39。s cabin was crowded when two people were in it, and it *as at the bottom of the carousel. It took one act of love in freefall to make a bed seem as limiting as the back scat of a Chevrolet. 39。Why don39。t you turn this way a little? Bill asked. Can you give me a good reason? He showed her one, and she gave him a little more than he had asked for. Then she found herself with a little more than she had .asked for, but as usual, he kne would be easy to move it. Cirocco frowned. Just how big is it, then? The PoloAugust, she was almost sure it was August looked at her with that calm, strangely unsettling face. I should say about two or three kilometers. Possibly less. Is that all? Gene grinned. You give me the numbers, I39。ll land on it. What do you mean, 39。Is that all39。? Gaby said. It couldn39。t have been very much bigger, not to have been sighted by the Lunar scopes. We would have known about it thirty years ago. All right. But you interrupted my bath for a damn pebble. It hardly seems worth it. Gaby looked smug. Maybe not to you, but if it was a tenth that size, I39。d still get to name it. Discovering a et or an asteroid is one thing but only a couple people each century get to name a moon. Cirocco released her toehold on the holo tank strut and twisted toward the corridor entr The gunner fired the second harpoon. The whale gave a convulsive shudder. His life was nearly over. A life that had begun thirty years ago as a tiny calf in the s parkling Indian Ocean. At the age of f ive he had left his mother and joined other young males in a bachelor group. When his blubber thickened, he migrated to colder waters where food was more plentiful. At 25 he became master of a pod of twelve cows which remained with their calves in tropical seas. Although he was dwarfed by the hundredfoot blue whale, could not sing like the sweetvoiced humpback whaleboth of which fed on planktonhis sort were the largest of the toothed whales, the same majestic breed as Moby Dick. Each year he made the long journey back from the Antarctic to mate. But not this year. For three decades, the bull had eluded harpoons. Now he died, spouting thick blood. The gunner nodded w ith satisfaction. Soon the vast corpse was w inched alongside. Then, swinging slowly, the catcher boat chugged towards the factory ship whose stern gaped open like a mouth to swallow the whale. Once inside, it was hauled up a ramp. 第 25 頁 共 23 頁 The whale was efficiently disposed of. Its domed head yielded fifteen barrels of spermaceti oil for use in cosmetics。 its body, oil for lubricants and leather softening。 its belly, ambergris (the residue of squids39。 beaks) for perfume. Other products w ould later include crayons, candles, soap, pet food, fertiliser, glue. All these could be obtained from vegetable sources. But as long as unscrupulous people paid, whalers would go on breaking the law. Sadly, as he saw the mighty animal disappear, the medical officer walked away. Behind him a helicopter lif ted off with a swish and sw irl of blades. Whale spotting? He wondered, not for the first time, what was really happening aboard the factory ship. Whaling was bad enoughbut he suspected something still more sinister. However, he had learned that it wasn39。t wise to ask too many questions round here. In the Antarctic, you could vanish without trace. Far, far to the north, off the coast of Norway, an oiltanker crawled through fog. Usually the captain loathed such conditions. But today he was pleasedfor the clammy cloud would conceal his activities. Leaning forward on the bridge, he gave orders to wash out the ship39。s tanks. Within minutes a sticky stinking stream of brown liquid was gurgling into the sea. Even when unloaded, a tanker retains about 2,000 tons of oil at the bottom of its tanks. That sludge has to be removed before a new cargo is taken on. Why pay to have the tanks cleaned in port if you could do it for nothing yourself? The captain39。s action was irresponsible, illegal and punishable with a heavy fine. But who can arrest an invisible culprit? He blessed the fog as the ship stole away from the scene of the crime. Hours later a violent storm blew up, clearing the fog. Buffeted by wind, seabirds sought refuge on the calmest waterwhich was those patches slic ked with oil. N ot long af