Added fetchallcerts.py

1 files changed, 8 insertions, 0 deletions

diff --git a/tools/certtools.py b/tools/certtools.py
index 7b901cf..16c2105 100644
--- a/tools/certtools.py
+++ b/tools/certtools.py
@@ -199,6 +199,14 @@ def pack_mtl(timestamp, leafcert):
     merkle_tree_leaf = version + leaf_type + timestamped_entry
     return merkle_tree_leaf
 
+def unpack_mtl(merkle_tree_leaf):
+    version = merkle_tree_leaf[0:1]
+    leaf_type = merkle_tree_leaf[1:2]
+    timestamped_entry = merkle_tree_leaf[2:]
+    (timestamp, entry_type) = struct.unpack(">QH", timestamped_entry[0:10])
+    (leafcert, rest_entry) = unpack_tls_array(timestamped_entry[10:], 3)
+    return (leafcert, timestamp)
+
 def get_leaf_hash(merkle_tree_leaf):
     leaf_hash = hashlib.sha256()
     leaf_hash.update(struct.pack(">b", 0))