PyMODINIT_FUNC
init_pycryptopp(void) {
PyObject *module;
module = Py_InitModule3("_pycryptopp", _pycryptopp_functions, _pycryptopp__doc__);
if (!module)
return;
PyObject* version;
/* a tuple of (Crypto++ version, extra-version) */
#ifndef DISABLE_EMBEDDED_CRYPTOPP
/* In the version of Crypto++ which is included in pycryptopp, there is a
symbol named `cryptopp_extra_version' which is declared (external
variable) in config.h and defined in cryptlib.cpp. Of course it is
possible that the header file we've #include'd is from the
embedded-in-pycryptopp version of Crypto++ but the dynamically linked
library that we load is from an older version which doesn't have this
symbol. In that case, the load will fail before we get this far. */
version = Py_BuildValue("is", CRYPTOPP_VERSION, cryptopp_extra_version);
#else
version = Py_BuildValue("iO", CRYPTOPP_VERSION, Py_None);
#endif
int succ = PyModule_AddObject(module, "cryptopp_version", version);
if (succ != 0)
return;
init_ecdsa(module);
init_rsa(module);
init_sha256(module);
init_aes(module);
init_xsalsa20(module);
}
struct rsa_key new_rsa_key(int bits) {
init_rsa();
mpz_t* e = (mpz_t*)calloc(1, sizeof(mpz_t));
mpz_t* d = (mpz_t*)calloc(1, sizeof(mpz_t));
mpz_t* n = (mpz_t*)calloc(1, sizeof(mpz_t));
mpz_t p, q, et;
int r = 0;
mpz_init(*e); mpz_init(*d); mpz_init(*n);
mpz_init(p); mpz_init(q); mpz_init(et);
while (r == 0) {
mpz_urandomb(p, rsa_rand_state, bits/2);
mpz_nextprime(p, p);
mpz_urandomb(q, rsa_rand_state, bits/2);
mpz_nextprime(q, q);
mpz_mul(*n, p, q);
mpz_sub_ui(p, p, 1);
mpz_sub_ui(q, q, 1);
mpz_mul(et, p, q);
mpz_set_ui(*e, 3);
r = mpz_invert(*d, *e, et);
}
return (rsa_key) {.e = e, .d = d, .n = n};
}