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+// password.cpp
+//
+// Copyright (c) 2010
+// Steven Watanabe
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//[password
+/*`
+ For the source of this example see
+ [@boost://libs/random/example/password.cpp password.cpp].
+
+ This example demonstrates generating a random 8 character
+ password.
+ */
+
+
+#include <boost/random/random_device.hpp>
+#include <boost/random/uniform_int_distribution.hpp>
+#include <iostream>
+
+int main() {
+ /*<< We first define the characters that we're going
+ to allow. This is pretty much just the characters
+ on a standard keyboard.
+ >>*/
+ std::string chars(
+ "abcdefghijklmnopqrstuvwxyz"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "1234567890"
+ "!@#$%^&*()"
+ "`~-_=+[{]}\\|;:'\",<.>/? ");
+ /*<< We use __random_device as a source of entropy, since we want
+ passwords that are not predictable.
+ >>*/
+ boost::random::random_device rng;
+ /*<< Finally we select 8 random characters from the
+ string and print them to cout.
+ >>*/
+ boost::random::uniform_int_distribution<> index_dist(0, chars.size() - 1);
+ for(int i = 0; i < 8; ++i) {
+ std::cout << chars[index_dist(rng)];
+ }
+ std::cout << std::endl;
+}
+
+//]