1 files changed, 38 insertions, 0 deletions
diff --git a/chromium/net/cert/pki/revocation_util.cc b/chromium/net/cert/pki/revocation_util.cc
new file mode 100644
index 00000000000..17a75b03c8e
--- /dev/null
+++ b/chromium/net/cert/pki/revocation_util.cc
@@ -0,0 +1,38 @@
+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/cert/pki/revocation_util.h"
+
+#include "base/time/time.h"
+#include "net/der/encode_values.h"
+#include "net/der/parse_values.h"
+
+namespace net {
+
+bool CheckRevocationDateValid(const der::GeneralizedTime& this_update,
+                              const der::GeneralizedTime* next_update,
+                              const base::Time& verify_time,
+                              const base::TimeDelta& max_age) {
+  der::GeneralizedTime verify_time_der;
+  if (!der::EncodeTimeAsGeneralizedTime(verify_time, &verify_time_der))
+    return false;
+
+  if (this_update > verify_time_der)
+    return false;  // Response is not yet valid.
+
+  if (next_update && (*next_update <= verify_time_der))
+    return false;  // Response is no longer valid.
+
+  der::GeneralizedTime earliest_this_update;
+  if (!der::EncodeTimeAsGeneralizedTime(verify_time - max_age,
+                                        &earliest_this_update)) {
+    return false;
+  }
+  if (this_update < earliest_this_update)
+    return false;  // Response is too old.
+
+  return true;
+}
+
+}  // namespace net