From 3b9bfbd07c3723662832caf5b1efe04de28b656d Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Mon, 4 Apr 2011 03:43:52 +0000
Subject: Convert most of the documentation to reStructured Text, adding a
 makefile to build it with Sphinx (http://sphinx.pocoo.org/).

Previously credits.txt listed public domain code sources; instead
directly credit the authors in the relevant files and delete that
file.

Drop the draft FIPS 140 security policy; I can't imagine FIPS 140
validation will ever happen, and if it does, I don't want
anything to do with it.

Also drop the internals doc, which was so out of date (and
incomplete) as to be worthless.

Move the tutorials and InSiTo pdfs into old/ for the time being,
until anything relevant from them can be filtered out and
converted into RST.
---
 examples/sig_gen.cpp | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 examples/sig_gen.cpp

(limited to 'examples/sig_gen.cpp')

diff --git a/examples/sig_gen.cpp b/examples/sig_gen.cpp
new file mode 100644
index 000000000..cf273216a
--- /dev/null
+++ b/examples/sig_gen.cpp
@@ -0,0 +1,96 @@
+/*
+* (C) 2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <vector>
+#include <map>
+#include <memory>
+
+#include <botan/botan.h>
+#include <botan/dsa.h>
+#include <botan/pubkey.h>
+using namespace Botan;
+
+bool check(std::map<std::string, std::string>);
+
+int main()
+   {
+   try {
+       Botan::LibraryInitializer init;
+
+      std::ifstream in("SigGen.rsp");
+      if(!in)
+         throw Exception("Can't open response file");
+
+      std::map<std::string, std::string> inputs;
+
+      while(in.good())
+         {
+         std::string line;
+         std::getline(in, line);
+
+         if(line == "" || line[0] == '[' || line[0] == '#')
+            continue;
+
+         std::vector<std::string> name_and_val = split_on(line, '=');
+
+         if(name_and_val.size() != 2)
+            throw Decoding_Error("Unexpected input: " + line);
+
+         name_and_val[0].erase(name_and_val[0].size()-1);
+         name_and_val[1].erase(0, 1);
+
+         std::string name = name_and_val[0], value = name_and_val[1];
+
+         inputs[name] = value;
+
+         if(name == "S")
+            {
+            bool result = check(inputs);
+            if(result == false)
+               {
+               std::cout << "   Check failed\n";
+
+               std::map<std::string, std::string>::const_iterator i;
+
+               for(i = inputs.begin(); i != inputs.end(); i++)
+                  std::cout << i->first << " = " << i->second << "\n";
+               }
+            inputs["Msg"] = inputs["R"] = inputs["S"] = "";
+            }
+         }
+   }
+   catch(std::exception& e)
+      {
+      std::cout << e.what() << std::endl;
+      return 1;
+      }
+   return 0;
+   }
+
+bool check(std::map<std::string, std::string> inputs)
+   {
+   BigInt p("0x"+inputs["P"]),
+          q("0x"+inputs["Q"]),
+          g("0x"+inputs["G"]),
+          y("0x"+inputs["Y"]);
+
+   DSA_PublicKey key(DL_Group(p, q, g), y);
+
+   Pipe pipe(new Hex_Decoder);
+
+   pipe.process_msg(inputs["Msg"]);
+   pipe.start_msg();
+   pipe.write(inputs["R"]);
+   pipe.write(inputs["S"] );
+   pipe.end_msg();
+
+   PK_Verifier verifier(key, "EMSA1(SHA-1)");
+
+   return verifier.verify_message(pipe.read_all(0), pipe.read_all(1));
+   }
-- 
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