Added validatestore.py

1 files changed, 20 insertions, 0 deletions

diff --git a/tools/certtools.py b/tools/certtools.py
index b0a1c97..1436863 100644
--- a/tools/certtools.py
+++ b/tools/certtools.py
@@ -289,6 +289,18 @@ def pack_mtl(timestamp, leafcert):
     merkle_tree_leaf = version + leaf_type + timestamped_entry
     return merkle_tree_leaf
 
+def pack_mtl_precert(timestamp, cleanedcert, issuer_key_hash):
+    entry_type = struct.pack(">H", 1)
+    extensions = ""
+    assert len(issuer_key_hash) == 32
+
+    timestamped_entry = struct.pack(">Q", timestamp) + entry_type + \
+      issuer_key_hash + tls_array(cleanedcert, 3) + tls_array(extensions, 2)
+    version = struct.pack(">b", 0)
+    leaf_type = struct.pack(">b", 0)
+    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]
@@ -375,6 +387,14 @@ def get_hash_from_certfile(cert):
             return base64.b16decode(line[len("Leafhash: "):])
     return None
 
+def get_timestamp_from_certfile(cert):
+    for line in cert.split("\n"):
+        if line.startswith("-----"):
+            return None
+        if line.startswith("Timestamp: "):
+            return int(line[len("Timestamp: "):])
+    return None
+
 def get_proof(store, tree_size, n):
     hash = get_hash_from_certfile(get_one_cert(store, n))
     return get_proof_by_hash(args.baseurl, hash, tree_size)