X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb-python/blobdiff_plain/24b3d57bcf320d9d7a90a40d5f6176b1f087ab3e..5ec4e0d8db70dd19d6c294092c71e608d2888bb5:/rand.c

diff --git a/rand.c b/rand.c
index 7a3ad53..6e1d05e 100644
--- a/rand.c
+++ b/rand.c
@@ -1,13 +1,11 @@
 /* -*-c-*-
  *
- * $Id$
- *
  * Random-number generators
  *
  * (c) 2004 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.
@@ -258,7 +256,7 @@ static PyMethodDef grand_pymethods[] = {
   METH	(byte,		"R.byte() -> BYTE")
   METH	(word,		"R.word() -> WORD")
   METH	(block,		"R.block(N) -> STRING")
-  KWMETH(mp,		"R.mp(bits, or = 0) -> MP")
+  KWMETH(mp,		"R.mp(bits, [or = 0]) -> MP")
   METH	(range,		"R.range(MAX) -> INT")
   METH	(mask,		"R.mask(STR) -> STR")
   METH	(seedint,	"R.seedint(I)")
@@ -272,7 +270,7 @@ static PyMethodDef grand_pymethods[] = {
 
 static PyTypeObject grand_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.GRand",			/* @tp_name@ */
+  "GRand",				/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -329,7 +327,7 @@ static PyObject *lcrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
 
 static PyTypeObject lcrand_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.LCRand",			/* @tp_name@ */
+  "LCRand",				/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -386,7 +384,7 @@ static PyObject *fibrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
 
 static PyTypeObject fibrand_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.FibRand",			/* @tp_name@ */
+  "FibRand",				/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -524,14 +522,14 @@ static PyObject *trget_goodbits(PyObject *me, void *hunoz)
 
 static PyGetSetDef truerand_pygetset[] = {
 #define GETSETNAME(op, name) tr##op##_##name
-  GET	(goodbits,     	"R.goodbits -> good bits of entropy remaining")
+  GET	(goodbits,	"R.goodbits -> good bits of entropy remaining")
 #undef GETSETNAME
   { 0 }
 };
 
 static PyTypeObject truerand_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.TrueRand",			/* @tp_name@ */
+  "TrueRand",				/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -583,26 +581,31 @@ static PyTypeObject *gccrand_pytype, *gcrand_pytype;
 
 typedef grand *gcrand_func(const void *, size_t sz);
 typedef grand *gcirand_func(const void *, size_t sz, uint32);
+typedef grand *gcnrand_func(const void *, size_t sz, const void *);
 typedef struct gccrand_info {
   const char *name;
   const octet *keysz;
   unsigned f;
+  size_t noncesz;
   gcrand_func *func;
 } gccrand_info;
 
+#define RNGF_INT 1u
+#define RNGF_NONCE 2u
+
 typedef struct gccrand_pyobj {
   PyHeapTypeObject ty;
   const gccrand_info *info;
 } gccrand_pyobj;
 #define GCCRAND_INFO(o) (((gccrand_pyobj *)(o))->info)
 
-#define GCCRAND_DEF(name, ksz, func, f)					\
+#define GCCRAND_DEF(name, ksz, func, f, nsz)				\
   static const gccrand_info func##_info =				\
-    { name, ksz, f, (gcrand_func *)func };
+    { name, ksz, f, nsz, (gcrand_func *)func };
 RNGS(GCCRAND_DEF)
 
 static const gccrand_info *const gcrandtab[] = {
-#define GCCRAND_ENTRY(name, ksz, func, f) &func##_info,
+#define GCCRAND_ENTRY(name, ksz, func, f, nsz) &func##_info,
   RNGS(GCCRAND_ENTRY)
   0
 };
@@ -619,7 +622,7 @@ static PyObject *gcrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
   if (keysz(n, info->keysz) != n) VALERR("bad key length");
   return (grand_dopywrap(ty, info->func(k, n), f_freeme));
 end:
-  return (0);  
+  return (0);
 }
 
 static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
@@ -638,7 +641,26 @@ static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
 			 ((gcirand_func *)info->func)(k, n, i),
 			 f_freeme));
 end:
-  return (0);  
+  return (0);
+}
+
+static PyObject *gcnrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
+{
+  const gccrand_info *info = GCCRAND_INFO(ty);
+  static char *kwlist[] = { "key", "nonce", 0 };
+  char *k, *n;
+  int ksz, nsz;
+
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#:new", kwlist,
+				   &k, &ksz, &n, &nsz))
+    goto end;
+  if (keysz(ksz, info->keysz) != ksz) VALERR("bad key length");
+  if (nsz != info->noncesz) VALERR("bad nonce length");
+  return (grand_dopywrap(ty,
+			 ((gcnrand_func *)info->func)(k, ksz, n),
+			 f_freeme));
+end:
+  return (0);
 }
 
 static PyObject *gccrand_pywrap(const gccrand_info *info)
@@ -653,11 +675,10 @@ static PyObject *gccrand_pywrap(const gccrand_info *info)
 			    Py_TPFLAGS_HEAPTYPE);
   g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
   g->ty.ht_type.tp_free = 0;
-  if (info->f & RNGF_INT)
-    g->ty.ht_type.tp_new = gcirand_pynew;
-  else
-    g->ty.ht_type.tp_new = gcrand_pynew;
-  PyType_Ready(&g->ty.ht_type);
+  if (info->f & RNGF_INT) g->ty.ht_type.tp_new = gcirand_pynew;
+  else if (info->f & RNGF_NONCE) g->ty.ht_type.tp_new = gcnrand_pynew;
+  else g->ty.ht_type.tp_new = gcrand_pynew;
+  typeready(&g->ty.ht_type);
   return ((PyObject *)g);
 }
 
@@ -676,7 +697,7 @@ static PyGetSetDef gccrand_pygetset[] = {
 
 static PyTypeObject gccrand_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.GCCRand",			/* @tp_name@ */
+  "GCCRand",				/* @tp_name@ */
   sizeof(gccrand_pyobj),		/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -724,7 +745,7 @@ static PyTypeObject gccrand_pytype_skel = {
 
 static PyTypeObject gcrand_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.GCRand",			/* @tp_name@ */
+  "GCRand",				/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -825,7 +846,7 @@ end:
 
 static PyTypeObject sslprf_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.SSLRand",			/* @tp_name@ */
+  "SSLRand",				/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -873,7 +894,7 @@ static PyTypeObject sslprf_pytype_skel = {
 
 static PyTypeObject tlsdx_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.TLSDataExpansion",		/* @tp_name@ */
+  "TLSDataExpansion",			/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -921,7 +942,7 @@ static PyTypeObject tlsdx_pytype_skel = {
 
 static PyTypeObject tlsprf_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.TLSPRF",			/* @tp_name@ */
+  "TLSPRF",				/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -980,7 +1001,7 @@ static PyObject *dsarand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
     goto end;
   rc = grand_dopywrap(ty, dsarand_create(p, sz), f_freeme);
 end:
-  return (0);
+  return (rc);
 }
 
 static PyObject *drget_seed(PyObject *me, void *hunoz)
@@ -1001,7 +1022,7 @@ static PyGetSetDef dsarand_pygetset[] = {
 
 static PyTypeObject dsarand_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.DSARand",			/* @tp_name@ */
+  "DSARand",				/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -1132,7 +1153,7 @@ static PyGetSetDef bbs_pygetset[] = {
 
 static PyTypeObject bbs_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.BlumBlumShub",		/* @tp_name@ */
+  "BlumBlumShub",			/* @tp_name@ */
   sizeof(grand_pyobj),			/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */
 
@@ -1236,7 +1257,7 @@ static PyObject *meth__BBSPriv_generate(PyObject *me,
   rc->bp.n = MP_COPY(bp.n);
 end:
   mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n); mp_drop(x);
-  return ((PyObject *)rc); 
+  return ((PyObject *)rc);
 }
 
 static void bbspriv_pydealloc(PyObject *me)
@@ -1281,16 +1302,16 @@ static PyMethodDef bbspriv_pymethods[] = {
 
 static PyGetSetDef bbspriv_pygetset[] = {
 #define GETSETNAME(op, name) bp##op##_##name
-  GET	(n, 		"R.n -> Blum modulus")
-  GET	(p, 		"R.p -> one of the factors of the modulus")
-  GET	(q, 		"R.q -> one of the factors of the modulus")
+  GET	(n,		"R.n -> Blum modulus")
+  GET	(p,		"R.p -> one of the factors of the modulus")
+  GET	(q,		"R.q -> one of the factors of the modulus")
 #undef GETSETNAME
   { 0 }
 };
 
 static PyTypeObject bbspriv_pytype_skel = {
   PyObject_HEAD_INIT(0) 0,		/* Header */
-  "catacomb.BBSPriv",			/* @tp_name@ */
+  "BBSPriv",				/* @tp_name@ */
   sizeof(bbspriv_pyobj),		/* @tp_basicsize@ */
   0,					/* @tp_itemsize@ */