Crypt the swapfile.
diff --git a/src/proto/blowfish.pro b/src/proto/blowfish.pro
index ba18176..51e4fa9 100644
--- a/src/proto/blowfish.pro
+++ b/src/proto/blowfish.pro
@@ -4,5 +4,7 @@
 void bf_crypt_encode __ARGS((char_u *from, size_t len, char_u *to));
 void bf_crypt_decode __ARGS((char_u *ptr, long len));
 void bf_crypt_init_keys __ARGS((char_u *passwd));
+void bf_crypt_save __ARGS((void));
+void bf_crypt_restore __ARGS((void));
 int blowfish_self_test __ARGS((void));
 /* vim: set ft=c : */