python: add PrivateKey::generateEC support

python/opendht.pyx

@@ -267,6 +267,11 @@ cdef class PrivateKey(_WithID):
         k = PrivateKey()
         k._key = cpp.make_shared[cpp.PrivateKey](cpp.PrivateKey.generate())
         return k
+    @staticmethod
+    def generateEC():
+        k = PrivateKey()
+        k._key = cpp.make_shared[cpp.PrivateKey](cpp.PrivateKey.generateEC())
+        return k
 
 cdef class PublicKey(_WithID):
     cdef cpp.PublicKey _key

python/opendht_cpp.pxd

@@ -89,6 +89,8 @@ cdef extern from "opendht/crypto.h" namespace "dht::crypto":
         Blob decrypt(Blob data) const
         @staticmethod
         PrivateKey generate()
+        @staticmethod
+        PrivateKey generateEC()
 
     cdef cppclass PublicKey:
         PublicKey()