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+== Installing PBC ==
+
+The PBC library needs http://www.swox.com/gmp/[the GMP library].
+
+This build system has been tested and works on Linux and Mac OS X with a
+fink installation.
+
+  $ ./configure
+  $ make
+  $ make install
+
+On Windows, the configure command requires a couple of options:
+
+  $ ./configure -disable-static -enable-shared
+
+By default the library is installed in `/usr/local/lib`.  On some systems, this
+may not be in the library path. One way to fix this is to edit
+`/etc/ld.so.conf` and run `ldconfig`.
+
+=== Simple Makefile ===
+
+For speed and simplicity, I use `simple.make` during development.
+Naturally it is less portable.
+
+  $ make -f simple.make
+
+PBC uses some GNU C extensions such as nested functions.
+
+[[pbcintro]]
+=== Quick start ===
+
+We shall use the following notation. For our purposes, the pairing is a
+bilinear map from two cyclic groups, G1 and G2 to a third group GT, where each
+group has prime order r.
+
+Run `pbc/pbc` and type:
+
+  g := rnd(G1);
+  g;
+
+The first line generates a random element g of the group G1,
+while the second prints out the value of g. (The syntax was influenced
+by `bc`, an arbitrary precision calculator.)
+Next, enter:
+
+  h := rnd(G2);
+  h;
+
+This assigns h to a random element of the group G2. Actually, the default
+pairing `pbc` uses is symmetric so G1 and G2 are in fact the same group, but in
+general they are distinct. To compute the pairing applied to g and h, type:
+
+  pairing(g,h);
+
+The order of both g and h is r. Let's generate two random numbers between
+1 and r:
+
+  a := rnd(Zr);
+  b := rnd(Zr);
+
+By bilinearity, the resulting output of both of these lines should be
+identical:
+
+  pairing(g^a,h^b);
+  pairing(g,h)^(a*b);
+
+This program has <<pbcref, other features>> but the commands shown here should
+be enough to quickly and interactively experiment with many pairing-based
+cryptosystems using real numbers.