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Diffstat (limited to 'src/python/rsa.cpp')
| -rw-r--r-- | src/python/rsa.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/python/rsa.cpp b/src/python/rsa.cpp new file mode 100644 index 000000000..770082945 --- /dev/null +++ b/src/python/rsa.cpp @@ -0,0 +1,220 @@ +/* +* Boost.Python module definition +* (C) 1999-2007 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#include <botan/rsa.h> +#include <botan/pubkey.h> +#include <botan/x509_key.h> +using namespace Botan; + +#include "python_botan.h" +#include <sstream> + +std::string bigint2str(const BigInt& n) + { + std::ostringstream out; + out << n; + return out.str(); + } + +class Py_RSA_PrivateKey + { + public: + Py_RSA_PrivateKey(std::string pem_str, + Python_RandomNumberGenerator& rng, + std::string pass); + Py_RSA_PrivateKey(std::string pem_str, + Python_RandomNumberGenerator& rng); + + Py_RSA_PrivateKey(u32bit bits, Python_RandomNumberGenerator& rng); + ~Py_RSA_PrivateKey() { delete rsa_key; } + + std::string to_string() const + { + return PKCS8::PEM_encode(*rsa_key); + } + + std::string to_ber() const + { + secure_vector<byte> bits = PKCS8::BER_encode(*rsa_key); + return std::string(reinterpret_cast<const char*>(&bits[0]), bits.size()); + } + + std::string get_N() const { return bigint2str(get_bigint_N()); } + std::string get_E() const { return bigint2str(get_bigint_E()); } + + const BigInt& get_bigint_N() const { return rsa_key->get_n(); } + const BigInt& get_bigint_E() const { return rsa_key->get_e(); } + + std::string decrypt(const std::string& in, + const std::string& padding); + + std::string sign(const std::string& in, + const std::string& padding, + Python_RandomNumberGenerator& rng); + private: + RSA_PrivateKey* rsa_key; + }; + +std::string Py_RSA_PrivateKey::decrypt(const std::string& in, + const std::string& padding) + { + PK_Decryptor_EME dec(*rsa_key, padding); + + const byte* in_bytes = reinterpret_cast<const byte*>(in.data()); + + return make_string(dec.decrypt(in_bytes, in.size())); + } + +std::string Py_RSA_PrivateKey::sign(const std::string& in, + const std::string& padding, + Python_RandomNumberGenerator& rng) + { + PK_Signer sign(*rsa_key, padding); + const byte* in_bytes = reinterpret_cast<const byte*>(in.data()); + sign.update(in_bytes, in.size()); + return make_string(sign.signature(rng.get_underlying_rng())); + } + +Py_RSA_PrivateKey::Py_RSA_PrivateKey(u32bit bits, + Python_RandomNumberGenerator& rng) + { + rsa_key = new RSA_PrivateKey(rng.get_underlying_rng(), bits); + } + +Py_RSA_PrivateKey::Py_RSA_PrivateKey(std::string pem_str, + Python_RandomNumberGenerator& rng) + { + DataSource_Memory in(pem_str); + + Private_Key* pkcs8_key = + PKCS8::load_key(in, + rng.get_underlying_rng()); + + rsa_key = dynamic_cast<RSA_PrivateKey*>(pkcs8_key); + + if(!rsa_key) + throw std::invalid_argument("Key is not an RSA key"); + } + +Py_RSA_PrivateKey::Py_RSA_PrivateKey(std::string pem_str, + Python_RandomNumberGenerator& rng, + std::string passphrase) + { + DataSource_Memory in(pem_str); + + Private_Key* pkcs8_key = + PKCS8::load_key(in, + rng.get_underlying_rng(), + passphrase); + + rsa_key = dynamic_cast<RSA_PrivateKey*>(pkcs8_key); + + if(!rsa_key) + throw std::invalid_argument("Key is not an RSA key"); + } + +class Py_RSA_PublicKey + { + public: + Py_RSA_PublicKey(std::string pem_str); + Py_RSA_PublicKey(const Py_RSA_PrivateKey&); + ~Py_RSA_PublicKey() { delete rsa_key; } + + std::string get_N() const { return bigint2str(get_bigint_N()); } + std::string get_E() const { return bigint2str(get_bigint_E()); } + + const BigInt& get_bigint_N() const { return rsa_key->get_n(); } + const BigInt& get_bigint_E() const { return rsa_key->get_e(); } + + std::string to_string() const + { + return X509::PEM_encode(*rsa_key); + } + + std::string to_ber() const + { + std::vector<byte> bits = X509::BER_encode(*rsa_key); + + return std::string(reinterpret_cast<const char*>(&bits[0]), + bits.size()); + } + + std::string encrypt(const std::string& in, + const std::string& padding, + Python_RandomNumberGenerator& rng); + + bool verify(const std::string& in, + const std::string& padding, + const std::string& signature); + private: + RSA_PublicKey* rsa_key; + }; + +Py_RSA_PublicKey::Py_RSA_PublicKey(const Py_RSA_PrivateKey& priv) + { + rsa_key = new RSA_PublicKey(priv.get_bigint_N(), priv.get_bigint_E()); + } + +Py_RSA_PublicKey::Py_RSA_PublicKey(std::string pem_str) + { + DataSource_Memory in(pem_str); + Public_Key* x509_key = X509::load_key(in); + + rsa_key = dynamic_cast<RSA_PublicKey*>(x509_key); + + if(!rsa_key) + throw std::invalid_argument("Key is not an RSA key"); + } + +std::string Py_RSA_PublicKey::encrypt(const std::string& in, + const std::string& padding, + Python_RandomNumberGenerator& rng) + { + PK_Encryptor_EME enc(*rsa_key, padding); + + const byte* in_bytes = reinterpret_cast<const byte*>(in.data()); + + return make_string(enc.encrypt(in_bytes, in.size(), + rng.get_underlying_rng())); + } + +bool Py_RSA_PublicKey::verify(const std::string& in, + const std::string& signature, + const std::string& padding) + { + PK_Verifier ver(*rsa_key, padding); + + const byte* in_bytes = reinterpret_cast<const byte*>(in.data()); + const byte* sig_bytes = reinterpret_cast<const byte*>(signature.data()); + + ver.update(in_bytes, in.size()); + return ver.check_signature(sig_bytes, signature.size()); + } + +void export_rsa() + { + python::class_<Py_RSA_PublicKey> + ("RSA_PublicKey", python::init<std::string>()) + .def(python::init<const Py_RSA_PrivateKey&>()) + .def("to_string", &Py_RSA_PublicKey::to_string) + .def("to_ber", &Py_RSA_PublicKey::to_ber) + .def("encrypt", &Py_RSA_PublicKey::encrypt) + .def("verify", &Py_RSA_PublicKey::verify) + .def("get_N", &Py_RSA_PublicKey::get_N) + .def("get_E", &Py_RSA_PublicKey::get_E); + + python::class_<Py_RSA_PrivateKey> + ("RSA_PrivateKey", python::init<std::string, Python_RandomNumberGenerator&, std::string>()) + .def(python::init<std::string, Python_RandomNumberGenerator&>()) + .def(python::init<u32bit, Python_RandomNumberGenerator&>()) + .def("to_string", &Py_RSA_PrivateKey::to_string) + .def("to_ber", &Py_RSA_PrivateKey::to_ber) + .def("decrypt", &Py_RSA_PrivateKey::decrypt) + .def("sign", &Py_RSA_PrivateKey::sign) + .def("get_N", &Py_RSA_PrivateKey::get_N) + .def("get_E", &Py_RSA_PrivateKey::get_E); + } |