X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/catacomb-python/blobdiff_plain/dafb2da44bb35c7057744ca820833cde6d43c534..eb8aa4ec8ea84c76dcf06d1647fce1b237cec313:/pubkey.c

diff --git a/pubkey.c b/pubkey.c
index 391db31..5292717 100644
--- a/pubkey.c
+++ b/pubkey.c
@@ -1118,7 +1118,7 @@ end:
   return (rc);
 }
 
-/*----- X25519 ------------------------------------------------------------*/
+/*----- X25519 and related algorithms -------------------------------------*/
 
 static PyObject *meth_x25519(PyObject *me, PyObject *arg)
 {
@@ -1136,6 +1136,22 @@ end:
   return (0);
 }
 
+static PyObject *meth_x448(PyObject *me, PyObject *arg)
+{
+  const char *k, *p;
+  Py_ssize_t ksz, psz;
+  PyObject *rc = 0;
+  if (!PyArg_ParseTuple(arg, "s#s#:x448", &k, &ksz, &p, &psz)) goto end;
+  if (ksz != X448_KEYSZ) VALERR("bad key length");
+  if (psz != X448_PUBSZ) VALERR("bad public length");
+  rc = bytestring_pywrap(0, X448_OUTSZ);
+  x448((octet *)PyString_AS_STRING(rc),
+       (const octet *)k, (const octet *)p);
+  return (rc);
+end:
+  return (0);
+}
+
 /*----- Ed25519 -----------------------------------------------------------*/
 
 static PyObject *meth_ed25519_pubkey(PyObject *me, PyObject *arg)
@@ -1203,6 +1219,8 @@ static PyMethodDef methods[] = {
 generate(NBITS, [event = pgen_nullev, rng = rand, nsteps = 0]) -> R")
   METH  (x25519,			"\
 x25519(KEY, PUBLIC) -> SHARED")
+  METH  (x448,				"\
+x448(KEY, PUBLIC) -> SHARED")
   METH  (ed25519_pubkey,		"\
 ed25519_pubkey(KEY) -> PUBLIC")
   KWMETH(ed25519_sign,			"\