(epa-file-cache-passphrase-for-symmetric-encryption):

Document that this option is not recommended to use.

2 files changed, 10 insertions, 1 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 9419f4d1da4..d14ef8399b5 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2009-09-20  Daiki Ueno  <ueno@unixuser.org>
+
+        * epa-file.el (epa-file-cache-passphrase-for-symmetric-encryption):
+        Document that this option is not recommended to use.
+
 2009-09-19  Glenn Morris  <rgm@gnu.org>
 
         * calc/calc-graph.el (calc-graph-lookup): Avoid assignment to free
diff --git a/lisp/epa-file.el b/lisp/epa-file.el
index fc753df312c..d0df8c9ff38 100644
--- a/lisp/epa-file.el
+++ b/lisp/epa-file.el
@@ -25,7 +25,11 @@
 (require 'epa-hook)
 
 (defcustom epa-file-cache-passphrase-for-symmetric-encryption nil
-  "If non-nil, cache passphrase for symmetric encryption."
+  "If non-nil, cache passphrase for symmetric encryption.
+
+For security reasons, this option is turned off by default and
+not recommended to use.  Use public-key encryption with gpg-agent
+instead, which does the same job in a safer way."
   :type 'boolean
   :group 'epa-file)