dumped within the core file. `read-passwd' function clears passphrase
strings by `(fillarray string 0)'. However, Emacs performs compaction
in gc_sweep phase. If GC happens before `fillarray', passphrase
-strings may be moved elsewhere in memory.
+strings may be moved elsewhere in memory. Therefore, passphrase
+caching in Elisp is generally a bad idea. The EasyPG Library dares to
+disable passphrase caching.
-Fortunately, there is gpg-agent to cache passphrases in more secure
-way, so the EasyPG Library dares to disable passphrase caching. Elisp
-programs can set `epg-context-passphrase-callback' to cache user's
-passphrases.
+Fortunately, there is more secure way to cache passphrases - use
+gpg-agent.
+
+Elisp programs can set `epg-context-passphrase-callback' to cache
+user's passphrases, it is not recommended though.