Add ecp_genkey(), prettier wrapper
diff --git a/include/polarssl/ecp.h b/include/polarssl/ecp.h
index 33c09fc..7342f45 100644
--- a/include/polarssl/ecp.h
+++ b/include/polarssl/ecp.h
@@ -536,6 +536,20 @@
                      void *p_rng );
 
 /**
+ * \brief           Generate a keypair
+ *
+ * \param grp_id    ECP group identifier
+ * \param key       Destination keypair
+ * \param f_rng     RNG function
+ * \param p_rng     RNG parameter
+ *
+ * \return          0 if successful,
+ *                  or a POLARSSL_ERR_ECP_XXX or POLARSSL_MPI_XXX error code
+ */
+int ecp_gen_key( ecp_group_id grp_id, ecp_keypair *key,
+                int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
+
+/**
  * \brief          Checkup routine
  *
  * \return         0 if successful, or 1 if the test failed