From ffdd6134851028a85c0cbd54689f86aa4fa7ff50 Mon Sep 17 00:00:00 2001
From: Tom Yu <tlyu@mit.edu>
Date: Fri, 3 Dec 2010 12:34:53 +0000
Subject: [PATCH] Test for key rollover for TGT, including purging old keys

ticket: 1219
target_version: 1.9
tags: pullup

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@24555 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/tests/Makefile.in      |  1 +
 src/tests/t_keyrollover.py | 46 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 src/tests/t_keyrollover.py

diff --git a/src/tests/Makefile.in b/src/tests/Makefile.in
index 85a592b8d..cc3eafec5 100644
--- a/src/tests/Makefile.in
+++ b/src/tests/Makefile.in
@@ -65,6 +65,7 @@ check-pytests::
 	$(RUNPYTEST) $(srcdir)/t_anonpkinit.py $(PYTESTFLAGS)
 	$(RUNPYTEST) $(srcdir)/t_lockout.py $(PYTESTFLAGS)
 	$(RUNPYTEST) $(srcdir)/t_kadm5_hook.py $(PYTESTFLAGS)
+	$(RUNPYTEST) $(srcdir)/t_keyrollover.py $(PYTESTFLAGS)
 
 clean::
 	$(RM) kdc.conf
diff --git a/src/tests/t_keyrollover.py b/src/tests/t_keyrollover.py
new file mode 100644
index 000000000..4af76ae9a
--- /dev/null
+++ b/src/tests/t_keyrollover.py
@@ -0,0 +1,46 @@
+#!/usr/bin/python
+from k5test import *
+
+rollover_krb5_conf = {'all' : {'libdefaults' : {'allow_weak_crypto' : 'true'}}}
+
+realm = K5Realm(krbtgt_keysalt='des-cbc-crc:normal',
+                krb5_conf=rollover_krb5_conf)
+
+princ1 = 'host/test1@%s' % (realm.realm,)
+princ2 = 'host/test2@%s' % (realm.realm,)
+realm.addprinc(princ1)
+realm.addprinc(princ2)
+
+realm.run_as_client([kvno, realm.host_princ])
+
+# Change key for TGS, keeping old key.
+realm.run_kadminl('cpw -randkey -e aes256-cts:normal -keepold krbtgt/%s@%s' %
+                  (realm.realm, realm.realm))
+
+# Ensure that kvno still works with an old TGT.
+realm.run_as_client([kvno, princ1])
+
+realm.run_kadminl('purgekeys krbtgt/%s@%s' % (realm.realm, realm.realm))
+# Make sure an old TGT fails after purging old TGS key.
+realm.run_as_client([kvno, princ2], expected_code=1)
+output = realm.run_as_client([klist, '-e'])
+
+expected = 'krbtgt/%s@%s\n\tEtype (skey, tkt): des-cbc-crc, des-cbc-crc' % \
+    (realm.realm, realm.realm)
+
+if expected not in output:
+    fail('keyrollover: expected TGS enctype not found')
+
+# Check that new key actually works.
+realm.kinit(realm.user_princ, password('user'))
+realm.run_as_client([kvno, realm.host_princ])
+output = realm.run_as_client([klist, '-e'])
+
+expected = 'krbtgt/%s@%s\n\tEtype (skey, tkt): ' \
+    'aes256-cts-hmac-sha1-96, aes256-cts-hmac-sha1-96' % \
+    (realm.realm, realm.realm)
+
+if expected not in output:
+    fail('keyrollover: expected TGS enctype not found after change')
+
+success('keyrollover')
-- 
2.26.2