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Published in:
2015 | OriginalPaper | Chapter
Chapter 11 Random generation
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Random numbers and random bit strings are essential in many areas of computer science, from sorting, routing in networks, and computer algebra to cryptography. Most computer systems provide a function like rand that delivers elements which look “random” in some sense. However, it is hard to come up with a practical and inexpensive way to generate truly random numbers. One can think of measuring radioactive decay, current machine clock time or disk usage, user input like key stroke timing or mouse movement, but these are either expensive or not very random.