openpgp: Only impl Serialize for objects that are normally exported.

  - Add two new traits: `Marshal` and `MarshalInto`.

  - Implement them instead of `Serialize` and `SerializeInto`.

  - Only implement `Serialize` and `SerializeInto` for data structures
    that are normally exported.

  - This should prevent users from accidentally serializing a bare
    signature (`Signature`) when they meant to serialize a signature
    packet (`Packet`), for instance.

  - Fixes #368.

1 files changed, 2 insertions, 2 deletions

diff --git a/openpgp/src/parse/parse.rs b/openpgp/src/parse/parse.rs
index c7e8338b..7d899fcc 100644
--- a/openpgp/src/parse/parse.rs
+++ b/openpgp/src/parse/parse.rs
@@ -1172,7 +1172,7 @@ impl_parse_generic_packet!(Signature);
 
 #[test]
 fn signature_parser_test () {
-    use crate::serialize::SerializeInto;
+    use crate::serialize::MarshalInto;
     let data = crate::tests::message("sig.gpg");
 
     {
@@ -1790,7 +1790,7 @@ impl Key4<key::UnspecifiedParts, key::UnspecifiedRole>
     /// secret subkey packet.
     fn parse<'a, T: 'a + BufferedReader<Cookie>>(mut php: PacketHeaderParser<T>) -> Result<PacketParser<'a>> {
         use std::io::Cursor;
-        use crate::serialize::Serialize;
+        use crate::serialize::Marshal;
 
         make_php_try!(php);
         let tag = php.header.ctb().tag();