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authorwukong <rebirthmonkey@gmail.com>2015-11-23 17:48:48 +0100
committerwukong <rebirthmonkey@gmail.com>2015-11-23 17:48:48 +0100
commitfca74d4bc3569506a6659880a89aa009dc11f552 (patch)
tree4cefd06af989608ea8ebd3bc6306889e2a1ad175 /moon-abe/pbc-0.5.14/doc/quickstart.txt
parent840ac3ebca7af381132bf7e93c1e4c0430d6b16a (diff)
moon-abe cleanup
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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.