diff --git a/doc/Protocol.md b/doc/Protocol.md index 1a51a5e36939d7b6aafc1d67ff8aa9df6ddf5b97..03b1bf29cc35f2d99fd2477ac5c3e4c8f21909fe 100644 --- a/doc/Protocol.md +++ b/doc/Protocol.md @@ -223,6 +223,9 @@ Type | Field | Requirement `BACK` | KeyPackets | May only contain subkeys and subkey bindings packets. `BACK` | CertificationPackets | May contain any number of other keys' certification packets. `BACK` | Membership | Must contain an `IN` membership without `USER_ID` field. + +> **N.B.:** a field with an empty value MUST NOT be provided. + ### Keyblock A Keyblock is a document gathering [keychanges](#keychange) in order to build a Web Of Trust (WoT) representation.