%%% Copyright (c) 2014, NORDUnet A/S.
%%% See LICENSE for licensing information.

%%% Plop data structures. Heavily based on RFC 6962. Some are for
%%% database storage, some for interfacing with consumers and some are
%%% for serialisation.

%% @doc Merkle Tree Leaf -- what's sent as 'leaf_input' in response to
%% get-entries requests and also the input to the hash function for
%% leaf hashes in the tree. RFC 6962 sect 3.4.

%% An entry, without the timestamp. This is what we hash over and
%% store in the the database for finding duplicated submissions.
-record(sth, {
          treesize :: integer(),
          timestamp :: integer(),
          roothash :: binary(),
          signature :: signature()
         }).
-type sth() :: #sth{}.

%% RFC 5246 7.4.1.4.1
-type hash_alg_type() :: none | md5 | sha1 | sha224 | sha256 | sha384 |
                         sha512. % uint8
-type signature_alg_type() :: anonymous | rsa | dsa | ecdsa. % uint8
-record(sig_and_hash_alg, {
        hash_alg :: hash_alg_type(),
        signature_alg :: signature_alg_type()
       }).
-type sig_and_hash_alg() :: #sig_and_hash_alg{}.

%% RFC 5246 4.7
-record(signature, {
          algorithm :: sig_and_hash_alg(),
          signature :: binary()
         }).
-type signature() :: #signature{}.