int
ndn_keypair(int public_only, struct ndn_pkey *private_key,
PyObject **py_private_key_ndn, PyObject **py_public_key_ndn)
{
struct ndn_pkey *public_key = NULL;
struct ndn_pkey *private_key_copy = NULL;
PyObject *py_private_key = NULL, *py_public_key = NULL;
unsigned int err;
int r;
if (!public_only && py_private_key_ndn) {
private_key_copy = (struct ndn_pkey *) EVP_PKEY_new();
JUMP_IF_NULL(private_key_copy, openssl_error);
py_private_key = NDNObject_New(PKEY_PRIV, private_key_copy);
JUMP_IF_NULL(py_private_key, error);
RSA *private_key_rsa = EVP_PKEY_get1_RSA ((EVP_PKEY *)private_key);
JUMP_IF_NULL(private_key_rsa, openssl_error);
RSA* private_key_rsa_copy = RSAPrivateKey_dup (private_key_rsa);
JUMP_IF_NULL(private_key_rsa_copy, openssl_error);
r = EVP_PKEY_set1_RSA((EVP_PKEY *) private_key_copy, private_key_rsa_copy);
RSA_free(private_key_rsa_copy);
JUMP_IF_NULL(r, error);
}
if (py_public_key_ndn) {
public_key = (struct ndn_pkey *) EVP_PKEY_new();
JUMP_IF_NULL(public_key, openssl_error);
py_public_key = NDNObject_New(PKEY_PUB, public_key);
JUMP_IF_NULL(py_public_key, error);
RSA *private_key_rsa = EVP_PKEY_get1_RSA ((EVP_PKEY *)private_key);
JUMP_IF_NULL(private_key_rsa, openssl_error);
RSA* public_key_rsa = RSAPublicKey_dup (private_key_rsa);
JUMP_IF_NULL(public_key_rsa, openssl_error);
r = EVP_PKEY_set1_RSA((EVP_PKEY *) public_key, public_key_rsa);
RSA_free(public_key_rsa);
JUMP_IF_NULL(r, error);
}
if (py_private_key_ndn) {
*py_private_key_ndn = public_only ? (Py_INCREF(Py_None), Py_None) :
py_private_key;
}
if (py_public_key_ndn)
*py_public_key_ndn = py_public_key;
return 0;
openssl_error:
err = ERR_get_error();
PyErr_Format(g_PyExc_NDNKeyError, "Unable to generate keypair from the key:"
" %s", ERR_reason_error_string(err));
error:
if (!py_public_key && public_key)
ndn_pubkey_free(public_key);
Py_XDECREF(py_public_key);
Py_XDECREF(py_private_key);
return -1;
}
PyObject *
KeyLocator_obj_from_ndn(PyObject *py_keylocator)
{
struct ndn_buf_decoder decoder, *d;
struct ndn_charbuf *keylocator;
struct ndn_charbuf *name;
struct ndn_pkey *pubkey;
size_t start, stop;
int r;
PyObject *py_o;
PyObject *py_KeyLocator_obj = NULL;
keylocator = NDNObject_Get(KEY_LOCATOR, py_keylocator);
debug("KeyLocator_from_ndn start\n");
d = ndn_buf_decoder_start(&decoder, keylocator->buf, keylocator->length);
assert(d); //should always succeed
if (!ndn_buf_match_dtag(d, NDN_DTAG_KeyLocator)) {
PyErr_SetString(g_PyExc_NDNKeyLocatorError, "The input isn't a valid"
" KeyLocator");
return NULL;
}
ndn_buf_advance(d);
if (ndn_buf_match_dtag(d, NDN_DTAG_KeyName)) {
const unsigned char *bname;
size_t bname_size;
PyObject *py_name_obj;
ndn_buf_advance(d);
start = d->decoder.token_index;
r = ndn_parse_Name(d, NULL);
stop = d->decoder.token_index;
if (r < 0)
return PyErr_Format(g_PyExc_NDNKeyLocatorError, "Error finding"
" NDN_DTAG_Name for KeyName (decoder state: %d)",
d->decoder.state);
assert(stop > start);
bname_size = stop - start;
bname = d->buf + start;
/*
r = ndn_ref_tagged_BLOB(NDN_DTAG_Name, d->buf, start, stop, &bname,
&bname_size);
if (r < 0)
return PyErr_Format(g_PyExc_NDNKeyLocatorError, "Error getting"
" NDN_DTAG_Name BLOB for KeyName (decoder state: %d)",
d->decoder.state);
*/
debug("Parse NDN_DTAG_Name inside KeyName, len=%zd\n", bname_size);
py_o = NDNObject_New_charbuf(NAME, &name);
if (!py_o)
return NULL;
r = ndn_charbuf_append(name, bname, bname_size);
if (r < 0) {
Py_DECREF(py_o);
return PyErr_NoMemory();
}
py_name_obj = Name_obj_from_ndn(py_o);
Py_DECREF(py_o);
if (!py_name_obj)
return NULL;
py_KeyLocator_obj = PyObject_CallObject(g_type_KeyLocator, NULL);
if (!py_KeyLocator_obj) {
Py_DECREF(py_name_obj);
goto error;
}
r = PyObject_SetAttrString(py_KeyLocator_obj, "keyName", py_name_obj);
Py_DECREF(py_name_obj);
JUMP_IF_NEG(r, error);
#pragma message "Parse and add digest to the keylocator"
} else if (ndn_buf_match_dtag(d, NDN_DTAG_Key)) {
const unsigned char *dkey;
size_t dkey_size;
PyObject *py_key_obj, *py_ndn_key;
start = d->decoder.token_index;
r = ndn_parse_required_tagged_BLOB(d, NDN_DTAG_Key, 1, -1);
stop = d->decoder.token_index;
if (r < 0)
return PyErr_Format(g_PyExc_NDNKeyLocatorError, "Error finding"
" NDN_DTAG_Key for Key (decoder state: %d)", d->decoder.state);
r = ndn_ref_tagged_BLOB(NDN_DTAG_Key, d->buf, start, stop, &dkey,
&dkey_size);
if (r < 0)
return PyErr_Format(g_PyExc_NDNKeyLocatorError, "Error getting"
" NDN_DTAG_Key BLOB for Key (decoder state: %d)",
d->decoder.state);
debug("Parse NDN_DTAG_Key, len=%zd\n", dkey_size);
pubkey = ndn_d2i_pubkey(dkey, dkey_size); // free with ndn_pubkey_free()
if (!pubkey) {
PyErr_SetString(g_PyExc_NDNKeyLocatorError, "Unable to parse key to"
" internal representation");
return NULL;
}
py_ndn_key = NDNObject_New(PKEY_PUB, pubkey);
if (!py_ndn_key) {
ndn_pubkey_free(pubkey);
return NULL;
}
py_key_obj = Key_obj_from_ndn(py_ndn_key);
Py_DECREF(py_ndn_key);
if (!py_key_obj)
return NULL;
py_KeyLocator_obj = PyObject_CallObject(g_type_KeyLocator, NULL);
if (!py_KeyLocator_obj) {
Py_DECREF(py_key_obj);
goto error;
}
r = PyObject_SetAttrString(py_KeyLocator_obj, "key", py_key_obj);
Py_DECREF(py_key_obj);
JUMP_IF_NEG(r, error);
} else if (ndn_buf_match_dtag(d, NDN_DTAG_Certificate)) {
PyErr_SetString(PyExc_NotImplementedError, "Found certificate DTAG,"
" which currently is unsupported");
return NULL;
} else {
PyErr_SetString(g_PyExc_NDNKeyLocatorError, "Unknown KeyLocator Type");
return NULL;
}
ndn_buf_check_close(d); // we don't really check the parser, though-
return py_KeyLocator_obj;
error:
Py_XDECREF(py_KeyLocator_obj);
return NULL;
}
