X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb-python/blobdiff_plain/46e6ad89d596d0987f00440c77e42c36f7d347f7..637b91402d2497db1318debd3cb3868a5abb8f01:/share.c

diff --git a/share.c b/share.c
index 38d966e..16d376e 100644
--- a/share.c
+++ b/share.c
@@ -1,13 +1,11 @@
 /* -*-c-*-
  *
- * $Id$
- *
  * Secret sharing
  *
  * (c) 2005 Straylight/Edgeware
  */
 
-/*----- Licensing notice --------------------------------------------------* 
+/*----- Licensing notice --------------------------------------------------*
  *
  * This file is part of the Python interface to Catacomb.
  *
@@ -15,12 +13,12 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- * 
+ *
  * Catacomb/Python 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 Catacomb/Python; if not, write to the Free Software Foundation,
  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
@@ -55,7 +53,7 @@ static PyObject *gfsget_threshold(PyObject *me, void *hunoz)
 static PyObject *gfsget_size(PyObject *me, void *hunoz)
   { return (PyInt_FromLong(GFSHARE_S(me)->sz)); }
 
-static PyGetSetDef gfshare_pygetset[]= {
+static const PyGetSetDef gfshare_pygetset[]= {
 #define GETSETNAME(op, name) gfs##op##_##name
   GET	(threshold,	"S.threshold -> THRESHOLD")
   GET	(size,		"S.size -> SECRETSZ")
@@ -65,7 +63,7 @@ static PyGetSetDef gfshare_pygetset[]= {
 
 static PyTypeObject gfshare_pytype_skel = {
   PyObject_HEAD_INIT(&PyType_Type) 0,	/* Header */
-  "catacomb.GFShare",			/* @tp_name@ */
+  "GFShare",				/* @tp_name@ */
   sizeof(gfshare_pyobj),		/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -88,17 +86,17 @@ static PyTypeObject gfshare_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Binary-field secret sharing base class.",
+  "Binary-field secret sharing base class.",
 
   0,					/* @tp_traverse@ */
   0,					/* @tp_clear@ */
   0,					/* @tp_richcompare@ */
   0,					/* @tp_weaklistoffset@ */
   0,					/* @tp_iter@ */
-  0,					/* @tp_iternexr@ */
+  0,					/* @tp_iternext@ */
   0,					/* @tp_methods@ */
   0,					/* @tp_members@ */
-  gfshare_pygetset,			/* @tp_getset@ */
+  PYGETSET(gfshare),			/* @tp_getset@ */
   0,					/* @tp_base@ */
   0,					/* @tp_dict@ */
   0,					/* @tp_descr_get@ */
@@ -115,12 +113,12 @@ static PyObject *gfsharesplit_pynew(PyTypeObject *ty,
 				    PyObject *arg, PyObject *kw)
 {
   char *p;
-  int n;
+  Py_ssize_t n;
   unsigned t;
   grand *r = &rand_global;
   gfshare_pyobj *s;
-  char *kwlist[] = { "threshold", "secret", "rng", 0 };
-  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&s#|O&:new", kwlist,
+  static const char *const kwlist[] = { "threshold", "secret", "rng", 0 };
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&s#|O&:new", KWLIST,
 				   convuint, &t, &p, &n, convgrand, &r))
     goto end;
   if (!t || t > 255) VALERR("threshold must be nonzero and < 256");
@@ -144,7 +142,7 @@ end:
   return (rc);
 }
 
-static PyMethodDef gfsharesplit_pymethods[] = {
+static const PyMethodDef gfsharesplit_pymethods[] = {
 #define METHNAME(name) gfsmeth_##name
   METH	(get,		"S.get(I) -> SHARE")
 #undef METHNAME
@@ -153,7 +151,7 @@ static PyMethodDef gfsharesplit_pymethods[] = {
 
 static PyTypeObject gfsharesplit_pytype_skel = {
   PyObject_HEAD_INIT(&PyType_Type) 0,	/* Header */
-  "catacomb.GFShareSplit",		/* @tp_name@ */
+  "GFShareSplit",			/* @tp_name@ */
   sizeof(gfshare_pyobj),		/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -176,15 +174,16 @@ static PyTypeObject gfsharesplit_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Binary field secret sharing: split secret into shares.",
+  "GFShareSplit(THRESHOLD, SECRET, [rng = rand]): binary-field sharing:\n"
+  "   split secret into shares.",
 
   0,					/* @tp_traverse@ */
   0,					/* @tp_clear@ */
   0,					/* @tp_richcompare@ */
   0,					/* @tp_weaklistoffset@ */
   0,					/* @tp_iter@ */
-  0,					/* @tp_iternexr@ */
-  gfsharesplit_pymethods,		/* @tp_methods@ */
+  0,					/* @tp_iternext@ */
+  PYMETHODS(gfsharesplit),		/* @tp_methods@ */
   0,					/* @tp_members@ */
   0,					/* @tp_getset@ */
   0,					/* @tp_base@ */
@@ -204,8 +203,8 @@ static PyObject *gfsharejoin_pynew(PyTypeObject *ty,
 {
   unsigned t, sz;
   gfshare_pyobj *s;
-  char *kwlist[] = { "threshold", "size", 0 };
-  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", kwlist,
+  static const char *const kwlist[] = { "threshold", "size", 0 };
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", KWLIST,
 				   convuint, &t, convuint, &sz))
     goto end;
   if (!t || t > 255) VALERR("threshold must be nonzero and < 256");
@@ -230,7 +229,7 @@ static PyObject *gfsmeth_add(PyObject *me, PyObject *arg)
 {
   unsigned i;
   char *p;
-  int n;
+  Py_ssize_t n;
   if (!PyArg_ParseTuple(arg, "O&s#:add", convuint, &i, &p, &n)) goto end;
   if (i > 254) VALERR("index must be < 255");
   if (n != GFSHARE_S(me)->sz) VALERR("bad share size");
@@ -253,7 +252,7 @@ end:
   return (rc);
 }
 
-static PyMethodDef gfsharejoin_pymethods[] = {
+static const PyMethodDef gfsharejoin_pymethods[] = {
 #define METHNAME(name) gfsmeth_##name
   METH	(addedp,	"S.addedp(I) -> BOOL")
   METH	(add,		"S.add(I, SHARE) -> REMAIN")
@@ -265,7 +264,7 @@ static PyMethodDef gfsharejoin_pymethods[] = {
 static PyObject *gfsget_remain(PyObject *me, void *hunoz)
   { return (PyInt_FromLong(GFSHARE_S(me)->t - GFSHARE_S(me)->i)); }
 
-static PyGetSetDef gfsharejoin_pygetset[]= {
+static const PyGetSetDef gfsharejoin_pygetset[]= {
 #define GETSETNAME(op, name) gfs##op##_##name
   GET	(remain,	"S.remain -> REMAIN")
 #undef GETSETNAME
@@ -274,7 +273,7 @@ static PyGetSetDef gfsharejoin_pygetset[]= {
 
 static PyTypeObject gfsharejoin_pytype_skel = {
   PyObject_HEAD_INIT(&PyType_Type) 0,	/* Header */
-  "catacomb.GFShareJoin",		/* @tp_name@ */
+  "GFShareJoin",			/* @tp_name@ */
   sizeof(gfshare_pyobj),		/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -297,17 +296,18 @@ static PyTypeObject gfsharejoin_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Binary field secret sharing: join shares to recover secret.",
+  "GFShareJoin(THRESHOLD, SIZE): binary field sharing:\n"
+  "  join shares to recover secret.",
 
   0,					/* @tp_traverse@ */
   0,					/* @tp_clear@ */
   0,					/* @tp_richcompare@ */
   0,					/* @tp_weaklistoffset@ */
   0,					/* @tp_iter@ */
-  0,					/* @tp_iternexr@ */
-  gfsharejoin_pymethods,		/* @tp_methods@ */
+  0,					/* @tp_iternext@ */
+  PYMETHODS(gfsharejoin),		/* @tp_methods@ */
   0,					/* @tp_members@ */
-  gfsharejoin_pygetset,			/* @tp_getset@ */
+  PYGETSET(gfsharejoin),		/* @tp_getset@ */
   0,					/* @tp_base@ */
   0,					/* @tp_dict@ */
   0,					/* @tp_descr_get@ */
@@ -345,7 +345,7 @@ static PyObject *sget_threshold(PyObject *me, void *hunoz)
 static PyObject *sget_modulus(PyObject *me, void *hunoz)
   { return (mp_pywrap(SHARE_S(me)->p)); }
 
-static PyGetSetDef share_pygetset[]= {
+static const PyGetSetDef share_pygetset[]= {
 #define GETSETNAME(op, name) s##op##_##name
   GET	(threshold,	"S.threshold -> THRESHOLD")
   GET	(modulus,	"S.modulus -> MODULUS")
@@ -355,7 +355,7 @@ static PyGetSetDef share_pygetset[]= {
 
 static PyTypeObject share_pytype_skel = {
   PyObject_HEAD_INIT(&PyType_Type) 0,	/* Header */
-  "catacomb.Share",			/* @tp_name@ */
+  "Share",				/* @tp_name@ */
   sizeof(share_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -378,17 +378,17 @@ static PyTypeObject share_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Prime-field secret sharing base class.",
+  "Prime-field secret sharing base class.",
 
   0,					/* @tp_traverse@ */
   0,					/* @tp_clear@ */
   0,					/* @tp_richcompare@ */
   0,					/* @tp_weaklistoffset@ */
   0,					/* @tp_iter@ */
-  0,					/* @tp_iternexr@ */
+  0,					/* @tp_iternext@ */
   0,					/* @tp_methods@ */
   0,					/* @tp_members@ */
-  share_pygetset,			/* @tp_getset@ */
+  PYGETSET(share),			/* @tp_getset@ */
   0,					/* @tp_base@ */
   0,					/* @tp_dict@ */
   0,					/* @tp_descr_get@ */
@@ -409,8 +409,10 @@ static PyObject *sharesplit_pynew(PyTypeObject *ty,
   grand *r = &rand_global;
   mp *m = 0;
   share_pyobj *s;
-  char *kwlist[] = { "threshold", "secret", "modulus", "rng", 0 };
-  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&)&|O&O&:new", kwlist,
+  static const char *const kwlist[] =
+    { "threshold", "secret", "modulus", "rng", 0 };
+
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&:new", KWLIST,
 				   convuint, &t, convmp, &sec,
 				   convmp, &m, convgrand, &r))
     goto end;
@@ -437,7 +439,7 @@ end:
   return (rc);
 }
 
-static PyMethodDef sharesplit_pymethods[] = {
+static const PyMethodDef sharesplit_pymethods[] = {
 #define METHNAME(name) smeth_##name
   METH	(get,		"S.get(I) -> SHARE")
 #undef METHNAME
@@ -446,7 +448,7 @@ static PyMethodDef sharesplit_pymethods[] = {
 
 static PyTypeObject sharesplit_pytype_skel = {
   PyObject_HEAD_INIT(&PyType_Type) 0,	/* Header */
-  "catacomb.ShareSplit",		/* @tp_name@ */
+  "ShareSplit",				/* @tp_name@ */
   sizeof(share_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -469,15 +471,16 @@ static PyTypeObject sharesplit_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Prime field secret sharing: split secret into shares.",
+  "ShareSplit(THRESHOLD, SECRET, [modulus = ?], [rng = rand]):\n"
+  "  prime field secret sharing: split secret into shares.",
 
   0,					/* @tp_traverse@ */
   0,					/* @tp_clear@ */
   0,					/* @tp_richcompare@ */
   0,					/* @tp_weaklistoffset@ */
   0,					/* @tp_iter@ */
-  0,					/* @tp_iternexr@ */
-  sharesplit_pymethods,			/* @tp_methods@ */
+  0,					/* @tp_iternext@ */
+  PYMETHODS(sharesplit),		/* @tp_methods@ */
   0,					/* @tp_members@ */
   0,					/* @tp_getset@ */
   0,					/* @tp_base@ */
@@ -498,8 +501,8 @@ static PyObject *sharejoin_pynew(PyTypeObject *ty,
   unsigned t;
   mp *m = 0;
   share_pyobj *s;
-  char *kwlist[] = { "threshold", "modulus", 0 };
-  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", kwlist,
+  static const char *const kwlist[] = { "threshold", "modulus", 0 };
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", KWLIST,
 				   convuint, &t, convmp, &m))
     goto end;
   if (!t) VALERR("threshold must be nonzero");
@@ -548,7 +551,7 @@ end:
   return (rc);
 }
 
-static PyMethodDef sharejoin_pymethods[] = {
+static const PyMethodDef sharejoin_pymethods[] = {
 #define METHNAME(name) smeth_##name
   METH	(addedp,	"S.addedp(I) -> BOOL")
   METH	(add,		"S.add(I, SHARE) -> REMAIN")
@@ -560,7 +563,7 @@ static PyMethodDef sharejoin_pymethods[] = {
 static PyObject *sget_remain(PyObject *me, void *hunoz)
   { return (PyInt_FromLong(SHARE_S(me)->t - SHARE_S(me)->i)); }
 
-static PyGetSetDef sharejoin_pygetset[]= {
+static const PyGetSetDef sharejoin_pygetset[]= {
 #define GETSETNAME(op, name) s##op##_##name
   GET	(remain,	"S.remain -> REMAIN")
 #undef GETSETNAME
@@ -569,7 +572,7 @@ static PyGetSetDef sharejoin_pygetset[]= {
 
 static PyTypeObject sharejoin_pytype_skel = {
   PyObject_HEAD_INIT(&PyType_Type) 0,	/* Header */
-  "catacomb.ShareJoin",			/* @tp_name@ */
+  "ShareJoin",				/* @tp_name@ */
   sizeof(share_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -592,17 +595,18 @@ static PyTypeObject sharejoin_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Prime field secret sharing: join shares to recover secret.",
+  "ShareJoin(THRESHOLD, MODULUS): prime field secret sharing:\n"
+  "  join shares to recover secret.",
 
   0,					/* @tp_traverse@ */
   0,					/* @tp_clear@ */
   0,					/* @tp_richcompare@ */
   0,					/* @tp_weaklistoffset@ */
   0,					/* @tp_iter@ */
-  0,					/* @tp_iternexr@ */
-  sharejoin_pymethods,			/* @tp_methods@ */
+  0,					/* @tp_iternext@ */
+  PYMETHODS(sharejoin),			/* @tp_methods@ */
   0,					/* @tp_members@ */
-  sharejoin_pygetset,			/* @tp_getset@ */
+  PYGETSET(sharejoin),			/* @tp_getset@ */
   0,					/* @tp_base@ */
   0,					/* @tp_dict@ */
   0,					/* @tp_descr_get@ */