started with py crypto, enhanced raw.py generation, better autoconf integration

bindings/py/pypcp/key.py

@@ -0,0 +1,41 @@
+from pypcp.dll import *
+from pypcp.context import *
+
+class Key(object):
+    def __init__(self, owner=None, mail=None, sk=None, encoded=None, passphrase=None):
+        self._sk = None
+
+        if owner or mail:
+            # generate new one
+            if not owner:
+                owner=''
+            if not mail:
+                mail=''
+            self.generate(owner, mail)
+        elif sk:
+            # use the raw sk
+            self._sk = sk
+        elif encoded:
+            # import an encoded key
+            self.importkey(Context(), encoded, passphrase)
+        else:
+            self._sk = ffi.new("struct _pcp_key_t*")
+
+        # just for convenience
+        for key, value in convert_to_python(self._sk).iteritems():
+            self.__setattr__(key, value)
+
+    def importkey(self, context, encoded=None, passphrase=None):
+        sk = libpcp.pcp_import_secret(context._ctx, encoded, len(encoded), passphrase)
+        if not sk:
+            context.throw(IOError, "failed to import key")
+        self._sk = sk
+
+    def generate(self, owner=None, mail=None):
+        self._sk = libpcp.pcpkey_new()
+        if owner:
+            libpcp.pcpkey_setowner(self._sk, owner, mail)
+
+    def dump(self):
+        if self._sk:
+            libpcp.pcp_dumpkey(self._sk)