diff -rupN a/globals.h b/globals.h
--- a/globals.h	2009-08-26 03:08:52.000000000 +0800
+++ b/globals.h	2012-04-11 12:52:44.826523028 +0800
@@ -227,6 +227,8 @@ WHERE REGEXP PgpGoodSign;
 WHERE char *PgpSignAs;
 WHERE short PgpTimeout;
 WHERE char *PgpEntryFormat;
+WHERE char *PgpMimeSignatureFilename;
+WHERE char *PgpMimeSignatureDescription;
 WHERE char *PgpClearSignCommand;
 WHERE char *PgpDecodeCommand;
 WHERE char *PgpVerifyCommand;
diff -rupN a/init.h b/init.h
--- a/init.h	2010-09-15 23:39:31.000000000 +0800
+++ b/init.h	2012-04-11 12:52:44.825523029 +0800
@@ -2556,6 +2556,18 @@ struct option_t MuttVars[] = {
   ** a line quoted text if it also matches $$smileys. This mostly
   ** happens at the beginning of a line.
   */
+  { "pgp_mime_signature_filename", DT_STR, R_NONE, UL &PgpMimeSignatureFilename, UL "signature.asc"},
+  /*
+  ** .pp
+  ** This option sets the filename used for signature parts in PGP/MIME
+  ** signed messages.
+  */
+  { "pgp_mime_signature_description", DT_STR, R_NONE, UL &PgpMimeSignatureDescription, UL "Digital signature"},
+  /*
+  ** .pp
+  ** This option sets the Content-Description used for signature parts in
+  ** PGP/MIME signed messages.
+  */
 
 
 
diff -rupN a/PATCHES b/PATCHES
--- a/PATCHES	2008-03-20 04:07:06.000000000 +0800
+++ b/PATCHES	2012-04-11 12:52:44.824523030 +0800
@@ -0,0 +1 @@
+patch-1.5.3.vk.pgp_verbose_mime
diff -rupN a/pgp.c b/pgp.c
--- a/pgp.c	2010-09-14 01:19:55.000000000 +0800
+++ b/pgp.c	2012-04-11 12:52:44.825523029 +0800
@@ -1129,6 +1129,8 @@ BODY *pgp_sign_message (BODY *a)
   t->disposition = DISPNONE;
   t->encoding = ENC7BIT;
   t->unlink = 1; /* ok to remove this file after sending. */
+  mutt_set_parameter ("name", PgpMimeSignatureFilename, &t->parameter);
+  t->description = safe_strdup (PgpMimeSignatureDescription);
 
   return (a);
 }