Add ed25519_verify to __init__.py and add test for ed25519_verify

Signed-off-by: Alexander Maznev <alexander.maznev@gmail.com>

python/olm/__init__.py

@@ -2,3 +2,4 @@ from .account import Account
 from .session import Session
 from .outbound_group_session import OutboundGroupSession
 from .inbound_group_session import InboundGroupSession
+from .utility import ed25519_verify

python/olm/__main__.py

@@ -312,6 +312,8 @@ def build_arg_parser():
     )
     export_inbound_group.set_defaults(func=do_export_inbound_group)
 
+    ed25519_verify = commands.add_parser("ed25519_verify", help="Verify an ed25519 signature")
+    ed25519_verify.set_defaults(func=do_verify_ed25519_signature)
     return parser
 
 def do_outbound_group(args):
@@ -390,6 +392,14 @@ def do_export_inbound_group(args):
         index = session.first_known_index()
     args.export_file.write(session.export_session(index))
 
+def do_verify_ed25519_signature(args):
+    account = Account()
+    account.create()
+    message = "A Message".encode("ASCII")
+    ed25519_key = account.identity_keys()["ed25519"].encode("utf-8")
+    signature = account.sign(message)
+    ed25519_verify(ed25519_key, message, signature)
+
 if __name__ == '__main__':
     parser = build_arg_parser()
     args = parser.parse_args()

python/test_olm.sh

@@ -37,3 +37,7 @@ $OLM group_decrypt $BOB_GROUP_SESSION group_message
 
 $OLM export_inbound_group $BOB_GROUP_SESSION | $OLM import_inbound_group $CHARLIE_GROUP_SESSION
 $OLM group_decrypt $CHARLIE_GROUP_SESSION group_message
+
+### Utility
+
+$OLM ed25519_verify