1 files changed, 205 insertions, 0 deletions
diff --git a/misc/python/src/algos.cpp b/misc/python/src/algos.cpp
new file mode 100644
index 000000000..09acf1d74
--- /dev/null
+++ b/misc/python/src/algos.cpp
@@ -0,0 +1,205 @@
+/*************************************************
+* Boost.Python module definition                 *
+* (C) 1999-2006 The Botan Project                *
+*************************************************/
+
+#include <botan/botan.h>
+using namespace Botan;
+
+#include <boost/python.hpp>
+namespace python = boost::python;
+
+/* Encrypt or decrypt */
+std::string process(const std::string& in, BlockCipher* cipher,
+                    void (BlockCipher::* proc)(const byte[], byte[]) const)
+   {
+   if(in.size() != cipher->BLOCK_SIZE)
+      throw Invalid_Argument("Input for cipher " + cipher->name() +
+                             " must be " + to_string(cipher->BLOCK_SIZE) +
+                             " bytes");
+
+   const byte* in_data = (const byte*)in.data();
+
+   SecureVector<byte> out(cipher->BLOCK_SIZE);
+   (cipher->*proc)(in_data, out);
+
+   return std::string((const char*)out.begin(), out.size());
+   }
+
+class Py_BlockCipher
+   {
+   public:
+      BlockCipher* object() { return cipher; }
+
+      u32bit block_size() const { return cipher->BLOCK_SIZE; }
+      u32bit keylength_min() const { return cipher->MINIMUM_KEYLENGTH; }
+      u32bit keylength_max() const { return cipher->MAXIMUM_KEYLENGTH; }
+      u32bit keylength_mod() const { return cipher->KEYLENGTH_MULTIPLE; }
+
+      bool valid_keylength(u32bit kl) const
+         {
+         return cipher->valid_keylength(kl);
+         }
+
+      std::string name() const { return cipher->name(); }
+      void clear() throw() { cipher->clear(); }
+
+      std::string encrypt(const std::string& in) const
+         {
+         return process(in, cipher, &BlockCipher::encrypt);
+         }
+      std::string decrypt(const std::string& in) const
+         {
+         return process(in, cipher, &BlockCipher::decrypt);
+         }
+
+      void set_key(const OctetString& key) { cipher->set_key(key); }
+
+      Py_BlockCipher(const std::string& name)
+         {
+         cipher = get_block_cipher(name);
+         }
+      ~Py_BlockCipher() { delete cipher; }
+   private:
+      BlockCipher* cipher;
+   };
+
+class Py_StreamCipher
+   {
+   public:
+      StreamCipher* object() { return cipher; }
+
+      u32bit keylength_min() const { return cipher->MINIMUM_KEYLENGTH; }
+      u32bit keylength_max() const { return cipher->MAXIMUM_KEYLENGTH; }
+      u32bit keylength_mod() const { return cipher->KEYLENGTH_MULTIPLE; }
+
+      void set_key(const OctetString& key) { cipher->set_key(key); }
+      bool valid_keylength(u32bit kl) const
+         {
+         return cipher->valid_keylength(kl);
+         }
+
+      std::string name() const { return cipher->name(); }
+      void clear() throw() { cipher->clear(); }
+
+      std::string crypt(const std::string& in) const
+         {
+         SecureVector<byte> out(in.size());
+         cipher->encrypt((const byte*)in.data(), out.begin(), in.size());
+         return std::string((const char*)out.begin(), out.size());
+         }
+
+      Py_StreamCipher(const std::string& name)
+         {
+         cipher = get_stream_cipher(name);
+         }
+      ~Py_StreamCipher() { delete cipher; }
+   private:
+      StreamCipher* cipher;
+   };
+
+class Py_HashFunction
+   {
+   public:
+      HashFunction* object() { return hash; }
+
+      u32bit output_length() const { return hash->OUTPUT_LENGTH; }
+      std::string name() const { return hash->name(); }
+      void clear() throw() { hash->clear(); }
+
+      void update(const std::string& in) { hash->update(in); }
+
+      std::string final()
+         {
+         SecureVector<byte> result = hash->final();
+         return std::string((const char*)result.begin(), result.size());
+         }
+
+      Py_HashFunction(const std::string& name)
+         {
+         hash = get_hash(name);
+         }
+      ~Py_HashFunction() { delete hash; }
+   private:
+      HashFunction* hash;
+   };
+
+class Py_MAC
+   {
+   public:
+      MessageAuthenticationCode* object() { return mac; }
+
+      u32bit output_length() const { return mac->OUTPUT_LENGTH; }
+      u32bit keylength_min() const { return mac->MINIMUM_KEYLENGTH; }
+      u32bit keylength_max() const { return mac->MAXIMUM_KEYLENGTH; }
+      u32bit keylength_mod() const { return mac->KEYLENGTH_MULTIPLE; }
+      std::string name() const { return mac->name(); }
+      void clear() throw() { mac->clear(); }
+
+      void set_key(const OctetString& key) { mac->set_key(key); }
+
+      bool valid_keylength(u32bit kl) const
+         {
+         return mac->valid_keylength(kl);
+         }
+
+      void update(const std::string& in) { mac->update(in); }
+
+      std::string final()
+         {
+         SecureVector<byte> result = mac->final();
+         return std::string((const char*)result.begin(), result.size());
+         }
+
+      Py_MAC(const std::string& name)
+         {
+         mac = get_mac(name);
+         }
+      ~Py_MAC() { delete mac; }
+   private:
+      MessageAuthenticationCode* mac;
+   };
+
+void export_basic_algos()
+   {
+   python::class_<Py_BlockCipher>("BlockCipher", python::init<std::string>())
+      .add_property("block_size", &Py_BlockCipher::block_size)
+      .add_property("keylength_min", &Py_BlockCipher::keylength_min)
+      .add_property("keylength_max", &Py_BlockCipher::keylength_max)
+      .add_property("keylength_mod", &Py_BlockCipher::keylength_mod)
+      .add_property("name", &Py_BlockCipher::name)
+      .def("clear", &Py_BlockCipher::clear)
+      .def("valid_keylength", &Py_BlockCipher::valid_keylength)
+      .def("set_key", &Py_BlockCipher::set_key)
+      .def("encrypt", &Py_BlockCipher::encrypt)
+      .def("decrypt", &Py_BlockCipher::decrypt);
+
+   python::class_<Py_StreamCipher>("StreamCipher", python::init<std::string>())
+      .add_property("keylength_min", &Py_StreamCipher::keylength_min)
+      .add_property("keylength_max", &Py_StreamCipher::keylength_max)
+      .add_property("keylength_mod", &Py_StreamCipher::keylength_mod)
+      .add_property("name", &Py_StreamCipher::name)
+      .def("clear", &Py_StreamCipher::clear)
+      .def("valid_keylength", &Py_StreamCipher::valid_keylength)
+      .def("set_key", &Py_StreamCipher::set_key)
+      .def("crypt", &Py_StreamCipher::crypt);
+
+   python::class_<Py_HashFunction>("HashFunction", python::init<std::string>())
+      .add_property("output_length", &Py_HashFunction::output_length)
+      .add_property("name", &Py_HashFunction::name)
+      .def("clear", &Py_HashFunction::clear)
+      .def("update", &Py_HashFunction::update)
+      .def("final", &Py_HashFunction::final);
+
+   python::class_<Py_MAC>("MAC", python::init<std::string>())
+      .add_property("output_length", &Py_MAC::output_length)
+      .add_property("keylength_min", &Py_MAC::keylength_min)
+      .add_property("keylength_max", &Py_MAC::keylength_max)
+      .add_property("keylength_mod", &Py_MAC::keylength_mod)
+      .add_property("name", &Py_MAC::name)
+      .def("valid_keylength", &Py_MAC::valid_keylength)
+      .def("set_key", &Py_MAC::set_key)
+      .def("clear", &Py_MAC::clear)
+      .def("update", &Py_MAC::update)
+      .def("final", &Py_MAC::final);
+   }