rand.c, algorithms.py: Change how kinds of RNGs are distinguished.

[catacomb-python] / rand.c

diff --git a/rand.c b/rand.c
index 784fd93..5402737 100644 (file)
--- a/rand.c
+++ b/rand.c
@@ -173,7 +173,7 @@ end:
 static PyObject *grmeth_seedblock(PyObject *me, PyObject *arg)
 {
   char *p;
-  int n;
+  Py_ssize_t n;
   grand *r = GRAND_R(me);
   if (!PyArg_ParseTuple(arg, "s#:seedblock", &p, &n) ||
       checkop(r, GRAND_SEEDBLOCK, "seedblock"))
@@ -219,7 +219,7 @@ static PyObject *grmeth_mask(PyObject *me, PyObject *arg)
 {
   grand *r = GRAND_R(me);
   char *p, *q;
-  int sz;
+  Py_ssize_t sz;
   PyObject *rc;
 
   if (!PyArg_ParseTuple(arg, "s#:mask", &p, &sz)) return (0);
@@ -452,7 +452,7 @@ static PyObject *trmeth_stretch(PyObject *me, PyObject *arg)
 static PyObject *trmeth_add(PyObject *me, PyObject *arg)
 {
   grand *r = GRAND_R(me);
-  char *p; int n; unsigned goodbits;
+  char *p; Py_ssize_t n; unsigned goodbits;
   if (!PyArg_ParseTuple(arg, "s#O&:add", &p, &n, convuint, &goodbits))
     return (0);
   r->ops->misc(r, RAND_ADD, p, (size_t)n, goodbits);
@@ -462,7 +462,7 @@ static PyObject *trmeth_add(PyObject *me, PyObject *arg)
 static PyObject *trmeth_key(PyObject *me, PyObject *arg)
 {
   grand *r = GRAND_R(me);
-  char *p; int n;
+  char *p; Py_ssize_t n;
   if (!PyArg_ParseTuple(arg, "s#:key", &p, &n)) return (0);
   r->ops->misc(r, RAND_KEY, p, (size_t)n);
   RETURN_ME;
@@ -591,9 +591,15 @@ typedef struct gccrand_info {
   gcrand_func *func;
 } gccrand_info;
 
-#define RNGF_INT 1u
-#define RNGF_NONCE 2u
-#define RNGF_LATIN 4u
+#define RNGF_MASK 255u
+
+enum {
+  RNG_PLAIN = 0,
+  RNG_SEAL,
+  RNG_LATIN,
+  RNG_SHAKE,
+  RNG_KMAC
+};
 
 typedef struct gccrand_pyobj {
   PyHeapTypeObject ty;
@@ -617,7 +623,7 @@ static PyObject *gcrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
   const gccrand_info *info = GCCRAND_INFO(ty);
   static char *kwlist[] = { "key", 0 };
   char *k;
-  int n;
+  Py_ssize_t n;
 
   if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &n))
     goto end;
@@ -633,7 +639,7 @@ static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
   uint32 i = 0;
   static char *kwlist[] = { "key", "i", 0 };
   char *k;
-  int n;
+  Py_ssize_t n;
 
   if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&:new", kwlist,
                                   &k, &n, convu32, &i))
@@ -651,7 +657,7 @@ 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;
+  Py_ssize_t ksz, nsz;
 
   if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#:new", kwlist,
                                   &k, &ksz, &n, &nsz))
@@ -670,17 +676,21 @@ static PyObject *gccrand_pywrap(const gccrand_info *info)
   gccrand_pyobj *g = newtype(gccrand_pytype, 0, info->name);
   g->info = info;
   g->ty.ht_type.tp_basicsize = sizeof(grand_pyobj);
-  g->ty.ht_type.tp_base =
-    (info->f & RNGF_LATIN) ? gclatinrand_pytype : gcrand_pytype;
+  switch (info->f&RNGF_MASK) {
+    case RNG_LATIN: g->ty.ht_type.tp_base = gclatinrand_pytype; break;
+    default: g->ty.ht_type.tp_base = gcrand_pytype; break;
+  }
   Py_INCREF(g->ty.ht_type.tp_base);
   g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
                            Py_TPFLAGS_BASETYPE |
                            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 if (info->f & RNGF_NONCE) g->ty.ht_type.tp_new = gcnrand_pynew;
-  else g->ty.ht_type.tp_new = gcrand_pynew;
+  switch (info->f&RNGF_MASK) {
+    case RNG_LATIN: g->ty.ht_type.tp_new = gcnrand_pynew; break;
+    case RNG_SEAL: g->ty.ht_type.tp_new = gcirand_pynew; break;
+    default: g->ty.ht_type.tp_new = gcrand_pynew; break;
+  }
   typeready(&g->ty.ht_type);
   return ((PyObject *)g);
 }