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

Document that this option is not recommended to use.

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 9419f4d1da497d36fdfc7422df089aebecbdb4d5..d14ef8399b5ef2b021c770ede910a628b40b9aaa 100644 (file)
--- 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 fc753df312c71c9cc9a389a7dfe6ee9b67f919d4..d0df8c9ff3860abc3b636825ae8eec8366ec31f1 100644 (file)
--- 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)