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-rw-r--r--src/common/crypto_pwbox.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/common/crypto_pwbox.c b/src/common/crypto_pwbox.c
index b866c7ef39..819dc0c39d 100644
--- a/src/common/crypto_pwbox.c
+++ b/src/common/crypto_pwbox.c
@@ -1,3 +1,12 @@
+/* Copyright (c) 2014-2016, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * \file crypto_pwbox.c
+ *
+ * \brief Code for encrypting secrets in a password-protected form and saving
+ * them to disk.
+ */
#include "crypto.h"
#include "crypto_s2k.h"