1 files changed, 108 insertions, 0 deletions
diff --git a/botan/wrappers/boost-python/src/hash.cpp b/botan/wrappers/boost-python/src/hash.cpp
new file mode 100644
index 0000000..6ef1980
--- /dev/null
+++ b/botan/wrappers/boost-python/src/hash.cpp
@@ -0,0 +1,108 @@
+/*************************************************
+* Boost.Python module definition                 *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#include <botan/botan.h>
+using namespace Botan;
+
+#include "python_botan.h"
+
+class Py_HashFunction : public HashFunction
+   {
+   public:
+      virtual void hash_str(const std::string&) = 0;
+      virtual std::string final_str() = 0;
+
+      void clear() throw() {}
+
+      void add_data(const byte input[], u32bit length)
+         {
+         hash_str(make_string(input, length));
+         }
+
+      void final_result(byte output[])
+         {
+         string2binary(final_str(), output, OUTPUT_LENGTH);
+         }
+
+      Py_HashFunction(u32bit digest_size, u32bit block_size) :
+         HashFunction(digest_size, block_size) {}
+   };
+
+class Wrapped_HashFunction : public HashFunction
+   {
+   public:
+      void add_data(const byte in[], u32bit len) { hash->update(in, len); }
+      void final_result(byte out[]) { hash->final(out); }
+
+      void clear() throw() {}
+
+      std::string name() const { return hash->name(); }
+      HashFunction* clone() const { return hash->clone(); }
+
+      Wrapped_HashFunction(python::object py_obj, HashFunction* h) :
+         HashFunction(h->OUTPUT_LENGTH, h->HASH_BLOCK_SIZE),
+         obj(py_obj), hash(h) {}
+   private:
+      python::object obj;
+      HashFunction* hash;
+   };
+
+class Py_HashFunction_Wrapper : public Py_HashFunction,
+                                public python::wrapper<Py_HashFunction>
+   {
+   public:
+      HashFunction* clone() const
+         {
+         python::object self = get_owner(this);
+         python::object py_clone = self.attr("__class__")();
+         HashFunction* hf = python::extract<HashFunction*>(py_clone);
+         return new Wrapped_HashFunction(py_clone, hf);
+         }
+
+      std::string name() const
+         {
+         return this->get_override("name")();
+         }
+
+      void hash_str(const std::string& in)
+         {
+         this->get_override("update")(in);
+         }
+
+      std::string final_str()
+         {
+         return this->get_override("final")();
+         }
+
+      Py_HashFunction_Wrapper(u32bit digest_size, u32bit block_size) :
+         Py_HashFunction(digest_size, block_size) {}
+   };
+
+std::string final_str(HashFunction* hash)
+   {
+   SecureVector<byte> digest = hash->final();
+   return std::string((const char*)digest.begin(), digest.size());
+   }
+
+void export_hash_functions()
+   {
+   void (HashFunction::*update_str)(const std::string&) =
+      &HashFunction::update;
+
+   python::class_<HashFunction, boost::noncopyable>
+      ("HashFunction", python::no_init)
+      .def("__init__", python::make_constructor(get_hash))
+      .def_readonly("digest_size", &HashFunction::OUTPUT_LENGTH)
+      .def("name", &HashFunction::name)
+      .def("update", update_str)
+      .def("final", final_str);
+
+   python::class_<Py_HashFunction_Wrapper, python::bases<HashFunction>,
+                  boost::noncopyable>
+      ("HashFunctionImpl", python::init<u32bit, u32bit>())
+      .def("name", python::pure_virtual(&Py_HashFunction::name))
+      .def("update", python::pure_virtual(&Py_HashFunction::hash_str))
+      .def("final", python::pure_virtual(&Py_HashFunction::final_str));
+   }