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/*************************************************
* 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);
}
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