Problem - Kevin Tafuro

}
} while (nb = = -1);
}
}
}
See Also
• EGADS by Secure Software, Inc.: http://www.securesoftware.com/egads
• Recipes 2.4, 11.2, 11.3, 11.5, 11.16, 11.19
11.8 Getting Entropy or Pseudo-Randomness
Using EGADS
Problem
You want to use a library-level interface to EGADS for gathering entropy or getting
cryptographically strong pseudo-random data. For example, you may need entropy
on a system such as Microsoft Windows, where there is no built-in API for getting it.
Solution
Use the EGADS API as described in the following “Discussion” section.
Discussion
EGADS, the Entropy Gathering and Distribution System, is capable of performing
many functions related to random numbers. First, it provides a high-level interface
for getting random values, such as integers, numbers in a particular range, and so on.
Second, EGADS does its own entropy collection, and has a library-level API for
accessing the collector, making it a simple API to use for any of your randomness
needs.
EGADS supports a variety of Unix variants, including Darwin, FreeBSD, Linux,
OpenBSD, and Solaris. In addition, it supports Windows NT 4.0, Windows 2000,
and Windows XP. Unfortunately, EGADS does not support Windows 95, Windows
98, or Windows ME because it runs as a service (which is a subsystem that does not
exist on these versions of Windows). EGADS is available from http://www.securesoftware.com/egads.
EGADS is a good solution for the security-minded because it is conservative. It contains
a conservative entropy collector and a conservative pseudo-random number
generator. Both of these components have provable security properties that rely only
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