propagate from branch 'net.randombit.botan.1_8' (head c5ae189464f6ef16e3ce73ea7c563412460d76a3)

            to branch 'net.randombit.botan' (head e2b95b6ad31c7539cf9ac0ebddb1d80bf63b5b21)

1 files changed, 79 insertions, 0 deletions

diff --git a/src/wrap/python/python_botan.h b/src/wrap/python/python_botan.h
new file mode 100644
index 000000000..646c2e2c1
--- /dev/null
+++ b/src/wrap/python/python_botan.h
@@ -0,0 +1,79 @@
+
+#ifndef BOTAN_BOOST_PYTHON_COMMON_H__
+#define BOTAN_BOOST_PYTHON_COMMON_H__
+
+#include <botan/exceptn.h>
+#include <botan/parsing.h>
+#include <botan/secmem.h>
+using namespace Botan;
+
+#include <boost/python.hpp>
+namespace python = boost::python;
+
+extern void export_filters();
+extern void export_rsa();
+extern void export_x509();
+
+class Bad_Size : public Exception
+   {
+   public:
+      Bad_Size(u32bit got, u32bit expected) :
+         Exception("Bad size detected in Python/C++ conversion layer: got " +
+                   to_string(got) + " bytes, expected " + to_string(expected))
+         {}
+   };
+
+inline std::string make_string(const byte input[], u32bit length)
+   {
+   return std::string((const char*)input, length);
+   }
+
+inline std::string make_string(const MemoryRegion<byte>& in)
+   {
+   return make_string(in.begin(), in.size());
+   }
+
+inline void string2binary(const std::string& from, byte to[], u32bit expected)
+   {
+   if(from.size() != expected)
+      throw Bad_Size(from.size(), expected);
+   std::memcpy(to, from.data(), expected);
+   }
+
+template<typename T>
+inline python::object get_owner(T* me)
+   {
+   return python::object(
+      python::handle<>(
+         python::borrowed(python::detail::wrapper_base_::get_owner(*me))));
+   }
+
+class Python_RandomNumberGenerator
+   {
+   public:
+      Python_RandomNumberGenerator()
+         { rng = RandomNumberGenerator::make_rng(); }
+      ~Python_RandomNumberGenerator() { delete rng; }
+
+      std::string name() const { return rng->name(); }
+
+      void reseed() { rng->reseed(192); }
+
+      int gen_random_byte() { return rng->next_byte(); }
+
+      std::string gen_random(int n)
+         {
+         std::string s(n, 0);
+         rng->randomize(reinterpret_cast<byte*>(&s[0]), n);
+         return s;
+         }
+
+      void add_entropy(const std::string& in)
+         { rng->add_entropy(reinterpret_cast<const byte*>(in.c_str()), in.length()); }
+
+      RandomNumberGenerator& get_underlying_rng() { return *rng; }
+   private:
+      RandomNumberGenerator* rng;
+   };
+
+#endif