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Version 0.8.6

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New features/improvements:

	* Address generation using secp256k1 library (Linux only)

Instructions for installing the secp256k1 library on your system:

	doc/wiki/install-linux/Install-MMGen-on-Debian-or-Ubuntu-Linux.md

If secp256k1 is not installed on the system, MMGen remains usable. It just falls
back to 'keyconv', or failing that, python-ecdsa for generating addresses.
This commit is contained in:
philemon 2016-08-24 17:20:48 +03:00
commit 0be6059674
4 changed files with 52 additions and 25 deletions
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64
extmod/secp256k1mod.c
View file

@ -1,35 +1,61 @@
/*
mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
Copyright (C)2013-2016 Philemon <mmgen-py@yandex.com>
This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <Python.h>
#include <secp256k1.h>
static PyObject * priv2pub(PyObject *self, PyObject *args) {
const unsigned char * privkey;
const int klen;
const int compressed;
if (!PyArg_ParseTuple(args, "t#I", &privkey, &klen, &compressed))
return NULL;
if (klen != 32) return NULL;
secp256k1_pubkey pubkey;
size_t pubkeyclen = compressed == 1 ? 33: 65;
unsigned char pubkeyc[pubkeyclen];
const unsigned char * privkey;
const int klen;
const int compressed;
if (!PyArg_ParseTuple(args, "t#I", &privkey, &klen, &compressed))
return NULL;
if (klen != 32) {
PyErr_SetString(PyExc_ValueError, "Private key length not 32 bytes");
return NULL;
}
secp256k1_pubkey pubkey;
size_t pubkeyclen = compressed == 1 ? 33: 65;
unsigned char pubkeyc[pubkeyclen];
static secp256k1_context *ctx = NULL;
if (ctx == NULL) {
/* puts ("Initializing context"); */
ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY);
}
if (secp256k1_ec_pubkey_create(ctx, &pubkey, privkey) != 1) return NULL;
if (secp256k1_ec_pubkey_serialize(ctx, pubkeyc, &pubkeyclen, &pubkey,
compressed == 1 ? SECP256K1_EC_COMPRESSED: SECP256K1_EC_UNCOMPRESSED) != 1)
return NULL;
return Py_BuildValue("s#", pubkeyc,pubkeyclen);
if (secp256k1_ec_pubkey_create(ctx, &pubkey, privkey) != 1) {
PyErr_SetString(PyExc_RuntimeError, "Public key creation failed");
return NULL;
}
if (secp256k1_ec_pubkey_serialize(ctx, pubkeyc, &pubkeyclen, &pubkey,
compressed == 1 ? SECP256K1_EC_COMPRESSED: SECP256K1_EC_UNCOMPRESSED) != 1) {
PyErr_SetString(PyExc_RuntimeError, "Public key serialization failed");
return NULL;
}
return Py_BuildValue("s#", pubkeyc,pubkeyclen);
}
static PyMethodDef secp256k1Methods[] = {
{"priv2pub", priv2pub, METH_VARARGS, "Generate pubkey from privkey using libsecp256k1"},
{NULL, NULL, 0, NULL} /* Sentinel */
{"priv2pub", priv2pub, METH_VARARGS, "Generate pubkey from privkey using libsecp256k1"},
{NULL, NULL, 0, NULL} /* Sentinel */
};
PyMODINIT_FUNC initsecp256k1(void) {
PyObject *m;
m = Py_InitModule("secp256k1", secp256k1Methods);
if (m == NULL) return;
PyObject *m;
m = Py_InitModule("secp256k1", secp256k1Methods);
if (m == NULL) return;
}