From: yamaoka <yamaoka>
Date: Fri, 19 Mar 1999 04:50:55 +0000 (+0000)
Subject: * Support PGP 5.0i and GnuPG.
X-Git-Tag: wemi-1_13_4~7
X-Git-Url: http://git.chise.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25ecf74a5988b347a7f937890c757dca5c4b84b4;p=elisp%2Fsemi.git

* Support PGP 5.0i and GnuPG.
---

diff --git a/ChangeLog b/ChangeLog
index ec63cd9..7c31dcf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,49 @@
+1999-03-19  Katsumi Yamaoka   <yamaoka@jpl.org>
+
+	* NEWS, README.en: Update for PGP 5.0i and GnuPG support.
+
+	* semi-setup.el (TopLevel): If Mailcrypt module has beed installed,
+	autoload "mime-pgp" for `mime-pgp-setversion' and add the function
+	for working `mc-setversion' together with `mime-pgp-setversion' to
+	`mime-pgp-setversion-hook'.
+
+	* semi-def.el (TopLevel): Autoload "mc-pgp5" and "mc-gpg".
+	(pgp-function): Modify for extended `pgp-function-alist'.
+	(pgp-function-alist): Extend for supporting PGP 5.0i and GnuPG.
+
+	* mime-pgp.el (TopLevel): Initialize with `mime-pgp-setversion'.
+	(mime-pgp-setversion): New function.
+	(mime-pgp-setversion-hook): New hook.
+
+	(mime-verify-application/pgp-signature): Support PGP 5.0i and
+	GnuPG.
+	(mime-pgp-check-signature): Likewise.
+
+	(mime-pgp-good-signature-post-function-pgp50-us): New function.
+
+	(mime-pgp-key-expected-regexp,
+	mime-pgp-good-signature-post-function,
+	mime-pgp-good-signature-regexp, mime-pgp-default-language,
+	mime-pgp-command): New macros.
+
+	(mime-pgp-key-expected-regexp-alist): Extend for supporting PGP
+	5.0i and GnuPG.
+	(mime-pgp-good-signature-regexp-alist): Likewise.
+
+	(mime-pgp-default-language-alist, mime-pgp-command-alist,
+	mime-pgp-default-scheme): New variables.
+	(mime-pgp-default-language, mime-pgp-command): Abolish variables.
+
+	* mime-mc.el (mime-mc-pgp-encrypt-region): Support PGP 5.0i and
+	GnuPG.
+	(mime-mc-pgp-sign-region): Likewise.
+	(TopLevel): Attempt to load "mc-pgp5" and "mc-gpg".
+
+	* mime-edit.el (mime-edit-encrypt-pgp-mime): Use "gpg" for the
+	prefix string of boundary if GnuPG is used.
+	(TopLevel): Define `mc-default-scheme' for avoiding byte-compile
+	warning.
+
 1999-03-11  MORIOKA Tomohiko  <morioka@jaist.ac.jp>
 
 	* mime-edit.el (mime-charset-type-list): Add `tis-620'.
diff --git a/NEWS b/NEWS
index ad678eb..6ab4161 100644
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,17 @@ Copyright (C) 1998,1999 Free Software Foundation, Inc.
 
 * Changes in SEMI 1.13
 
+** PGP 5.0i and GnuPG is now supported for PGP/MIME
+
+A user interface for editing or viewing has never changed.  You can
+select the various PGPGPG commands with `M-x mime-pgp-setversion' or
+to setup your startup file, e.g.:
+
+    (eval-after-load "semi-setup" '(mime-pgp-setversion "gpg"))
+
+Note that Mailcrypt 3.5.2 or later is needed for PGP 5.0i or GnuPG.
+
+
 ** Function `mime-play-entity'
 
 Function `mime-play-entity' was renamed from `mime-raw-play-entity'
diff --git a/README.en b/README.en
index 62495bb..b349f06 100644
--- a/README.en
+++ b/README.en
@@ -44,7 +44,7 @@ Required environment
   19.14.  WEMI also does not support Emacs 19.29 to 19.34, XEmacs
   19.15 or XEmacs 20.2 without mule, but WEMI may work with them.
 
-  SEMI requires APEL (9.11 or later) and FLIM (1.12.5 or later)
+  WEMI requires APEL (9.11 or later) and FLIM (1.12.5 or later)
   package.  Please install them before installing it.  APEL package is
   available at:
 
@@ -54,7 +54,9 @@ Required environment
 
 	ftp://ftp.jaist.ac.jp/pub/GNU/elisp/flim/
 
-  PGP/MIME and application/pgp require mailcrypt or tiny-pgp package.
+  PGP/MIME and application/pgp require Mailcrypt or tiny-pgp package.
+  In addition, if you want to use PGP 5.0i or GnuPG for PGP/MIME, it
+  is needed that the version of Mailcrypt package is 3.5.2 or later.
 
 
 Installation
diff --git a/mime-edit.el b/mime-edit.el
index 0c04b97..b0555cb 100644
--- a/mime-edit.el
+++ b/mime-edit.el
@@ -114,6 +114,9 @@
 (require 'alist)
 (require 'invisible)
 
+;; Avoid byte-compile warning.
+(defvar mc-default-scheme)
+
 
 ;;; @ version
 ;;;
@@ -1797,7 +1800,7 @@ Parameter must be '(PROMPT CHOICE1 (CHOISE2 ...))."
 		(mime-edit-translate-region beg end boundary))
 	       (ctype    (car ret))
 	       (encoding (nth 1 ret))
-	       (pgp-boundary (concat "pgp-" boundary)))
+	       pgp-boundary)
 	  (goto-char beg)
 	  (insert header)
 	  (insert (format "Content-Type: %s\n" ctype))
@@ -1809,6 +1812,12 @@ Parameter must be '(PROMPT CHOICE1 (CHOISE2 ...))."
 		       recipients (point-min) (point-max) from)
 	      (throw 'mime-edit-error 'pgp-error)
 	      )
+	  (setq pgp-boundary
+		(format "%s-%s"
+			(if (eq 'mc-scheme-gpg mc-default-scheme)
+			    "gpg"
+			  "pgp")
+			boundary))
 	  (goto-char beg)
 	  (insert (format "--[[multipart/encrypted;
  boundary=\"%s\";
diff --git a/mime-mc.el b/mime-mc.el
index 7e5cb26..3c4a594 100644
--- a/mime-mc.el
+++ b/mime-mc.el
@@ -1,9 +1,10 @@
 ;;; mime-mc.el --- Mailcrypt interface for SEMI
 
-;; Copyright (C) 1996,1997,1998 MORIOKA Tomohiko
+;; Copyright (C) 1996,1997,1998,1999 MORIOKA Tomohiko
 
 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;; Keywords: PGP, security, MIME, multimedia, mail, news
+;;         Katsumi Yamaoka  <yamaoka@jpl.org>
+;; Keywords: PGP, GnuPG, security, MIME, multimedia, mail, news
 
 ;; This file is part of SEMI (Secure Emacs MIME Interface).
 
@@ -25,7 +26,11 @@
 ;;; Code:
 
 (require 'mailcrypt)
-(eval-and-compile (load "mc-pgp"))
+(eval-and-compile
+  (load "mc-pgp")
+  (load "mc-pgp5" t)
+  (load "mc-gpg" t)
+  )
 
 (defun mime-mc-pgp-generic-parser (result)
   (let ((ret (mc-pgp-generic-parser result)))
@@ -104,32 +109,71 @@ Content-Transfer-Encoding: 7bit
       (or buffer (null mybuf) (kill-buffer mybuf)))))
 
 (defun mime-mc-pgp-sign-region (start end &optional id unclear boundary)
-  ;; (if (not (boundp 'mc-pgp-user-id))
-  ;;     (load "mc-pgp")
-  ;;   )
   (let ((process-environment process-environment)
 	(buffer (get-buffer-create mc-buffer-name))
-	passwd args key
 	(parser (function mc-pgp-generic-parser))
-	(pgp-path mc-pgp-path)
-	)
-    (setq key (mc-pgp-lookup-key (or id mc-pgp-user-id)))
-    (setq passwd
-	  (mc-activate-passwd
-	   (cdr key)
-	   (format "PGP passphrase for %s (%s): " (car key) (cdr key))))
-    (setenv "PGPPASSFD" "0")
-    (setq args
-	  (cons
-	   (if boundary
-	       "-fbast"
-	     "-fast")
-	   (list "+verbose=1" "+language=en"
-		 (format "+clearsig=%s" (if unclear "off" "on"))
-		 "+batchmode" "-u" (cdr key))))
-    (if mc-pgp-comment
-	(setq args (cons (format "+comment=%s" mc-pgp-comment) args))
+	pgp-path key args prompt passwd hash-function)
+    (cond
+     ((eq 'mc-scheme-gpg mc-default-scheme)
+      (setq pgp-path mc-gpg-path
+	    key (mc-gpg-lookup-key (or id mc-gpg-user-id))
+	    args (delq nil
+		       (nconc
+			(if mc-gpg-comment
+			    (list "--comment" (format "%s" mc-gpg-comment)))
+			(list
+			 (if boundary
+			     "--detach-sign"
+			   (if unclear
+			       "--sign"
+			     "--clearsign"))
+			 "--armor" "--batch" "--textmode" "--verbose"
+			 "--passphrase-fd" "0" "--local-user" (cdr key))))
+	    prompt (format "GnuPG passphrase for %s (%s): "
+			   (car key) (cdr key))
+	    hash-function 'sha1)
+      (if (and boundary
+	       (string-match "^pgp-" boundary))
+	  (setq boundary
+		(concat "gpg-" (substring boundary (match-end 0))))
+	))
+     ((eq 'mc-scheme-pgp50 mc-default-scheme)
+      (setq pgp-path mc-pgp50-pgps-path
+	    key (mc-pgp50-lookup-key (or id mc-pgp50-user-id))
+	    args (delq nil
+		       (list
+			(if mc-pgp50-comment
+			    (format "+comment=%s" mc-pgp50-comment))
+			(if boundary
+			    "-fbat"
+			  "-fat")
+			"+verbose=1" "+language=us"
+			(format "+clearsig=%s" (if unclear "off" "on"))
+			"+batchmode" "-u" (cdr key)))
+	    prompt (format "PGP passphrase for %s (%s): "
+			   (car key) (cdr key))
+	    hash-function 'md5)
+      (setenv "PGPPASSFD" "0")
       )
+     (t
+      (setq pgp-path mc-pgp-path
+	    key (mc-pgp-lookup-key (or id mc-pgp-user-id))
+	    args (delq nil
+		       (list
+			(if mc-pgp-comment
+			    (format "+comment=%s" mc-pgp-comment))
+			(if boundary
+			    "-fbast"
+			  "-fast")
+			"+verbose=1" "+language=en"
+			(format "+clearsig=%s" (if unclear "off" "on"))
+			"+batchmode" "-u" (cdr key)))
+	    prompt (format "PGP passphrase for %s (%s): "
+			   (car key) (cdr key))
+	    hash-function 'md5)
+      (setenv "PGPPASSFD" "0")
+      ))
+    (setq passwd (mc-activate-passwd (cdr key) prompt))
     (message "Signing as %s ..." (car key))
     (if (mime-mc-process-region
 	 start end passwd pgp-path args parser buffer boundary)
@@ -140,7 +184,8 @@ Content-Transfer-Encoding: 7bit
 		(insert
 		 (format "\
 --[[multipart/signed; protocol=\"application/pgp-signature\";
- boundary=\"%s\"; micalg=pgp-md5][7bit]]\n" boundary))
+ boundary=\"%s\"; micalg=pgp-%s][7bit]]\n"
+			 boundary hash-function))
 		))
 	  (message "Signing as %s ... Done." (car key))
 	  t)
@@ -149,10 +194,16 @@ Content-Transfer-Encoding: 7bit
 (defun mime-mc-pgp-encrypt-region (recipients start end &optional id sign)
   (let ((mc-pgp-always-sign (if (eq sign 'maybe)
 				mc-pgp-always-sign
-			      'never)))
-    (mc-pgp-encrypt-region
-     (mc-split "\\([ \t\n]*,[ \t\n]*\\)+" recipients)
-     start end id nil)
+			      'never))
+	(function (cond ((eq 'mc-scheme-gpg mc-default-scheme)
+			 'mc-gpg-encrypt-region)
+			((eq 'mc-scheme-pgp50 mc-default-scheme)
+			 'mc-pgp50-encrypt-region)
+			(t
+			 'mc-pgp-encrypt-region))))
+    (funcall function
+	     (mc-split "\\([ \t\n]*,[ \t\n]*\\)+" recipients)
+	     start end id nil)
     ))
 
 		
diff --git a/mime-pgp.el b/mime-pgp.el
index fd0203a..8df1246 100644
--- a/mime-pgp.el
+++ b/mime-pgp.el
@@ -1,11 +1,12 @@
-;;; mime-pgp.el --- mime-view internal methods for PGP.
+;;; mime-pgp.el --- mime-view internal methods for either PGP or GnuPG.
 
 ;; Copyright (C) 1995,1996,1997,1998,1999 MORIOKA Tomohiko
 
 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;;         Katsumi Yamaoka  <yamaoka@jpl.org>
 ;; Created: 1995/12/7
 ;;	Renamed: 1997/2/27 from tm-pgp.el
-;; Keywords: PGP, security, MIME, multimedia, mail, news
+;; Keywords: PGP, GnuPG, security, MIME, multimedia, mail, news
 
 ;; This file is part of SEMI (Secure Emacs MIME Interface).
 
@@ -30,9 +31,9 @@
 
 ;;	[security-multipart] RFC 1847: "Security Multiparts for MIME:
 ;;	    Multipart/Signed and Multipart/Encrypted" by
-;;          Jim Galvin <galvin@tis.com>, Sandy Murphy <sandy@tis.com>,
+;;	    Jim Galvin <galvin@tis.com>, Sandy Murphy <sandy@tis.com>,
 ;;	    Steve Crocker <crocker@cybercash.com> and
-;;          Ned Freed <ned@innosoft.com> (1995/10)
+;;	    Ned Freed <ned@innosoft.com> (1995/10)
 
 ;;	[PGP/MIME] RFC 2015: "MIME Security with Pretty Good Privacy
 ;;	    (PGP)" by Michael Elkins <elkins@aero.org> (1996/6)
@@ -115,42 +116,184 @@
 ;;;
 ;;; It is based on RFC 2015 (PGP/MIME).
 
-(defvar mime-pgp-command "pgp"
-  "*Name of the PGP command.")
+(defvar mime-pgp-default-scheme 'pgp
+  "*Default encryption scheme to use.  See also `mime-pgp-command-alist'
+for valid schemes.")
 
-(defvar mime-pgp-default-language 'en
-  "*Symbol of language for pgp.
-It should be ISO 639 2 letter language code such as en, ja, ...")
+(defvar mime-pgp-command-alist '((gpg   . "gpg")
+				 (pgp50 . "pgp")
+				 (pgp   . "pgp"))
+  "*Alist of the corresponding schemes to the name of the commands.
+Each element looks like (SCHEME . COMMAND).  Valid SCHEMEs are:
+
+   gpg   - GnuPG.
+   pgp50 - PGP version 5.0i.
+   pgp   - PGP version 2.6.
+
+COMMAND for `pgp50' must *NOT* have a suffix, like neither \"pgpe\", \"pgpk\",
+\"pgps\" nor \"pgpv\".")
+
+(defvar mime-pgp-default-language-alist nil
+  "*Alist of the corresponding schemes to the symbols of languages.
+It should be ISO 639 2 letter language code such as en, ja, ...  Each
+element looks like (SCHEME . SYMBOL).  Also see `mime-pgp-command-alist'
+for valid SCHEMEs.")
 
 (defvar mime-pgp-good-signature-regexp-alist
-  '((en . "Good signature from user.*$"))
-  "Alist of language vs regexp to detect ``Good signature''.")
+  '((gpg
+     (nil "Good signature from.*$")
+     )
+    (pgp50
+     (us "Good signature made .* by key:$"
+	 mime-pgp-good-signature-post-function-pgp50-us)
+     )
+    (pgp
+     (en "Good signature from user.*$")
+     ))
+  "Alist of the scheme vs corresponding languages to regexps for detecting
+``Good signature''.  The optional symbol of the post processing function
+for arranging the output message can be specified.  It will be called just
+after re-search is done successfully, and it is expected that the function
+returns a string for messaging.")
 
 (defvar mime-pgp-key-expected-regexp-alist
-  '((en . "Key matching expected Key ID \\(\\S +\\) not found"))
-  "Alist of language vs regexp to detect ``Key expected''.")
+  '((gpg
+     (nil
+      "key ID \\(\\S +\\)\ngpg: Can't check signature: public key not found")
+     )
+    (pgp50
+     (us "Signature by unknown keyid: 0x\\(\\S +\\)")
+     )
+    (pgp
+     (en "Key matching expected Key ID \\(\\S +\\) not found")
+     ))
+  "Alist of the scheme vs corresponding languages to regexps for detecting
+``Key expected''.")
+
+(defmacro mime-pgp-command (&optional suffix)
+  "Return a suitable command.  SUFFIX should be either \"e\", \"k\", \"s\"
+or \"v\" for choosing a command of PGP 5.0i."
+  (` (let ((command (cdr (assq
+			  mime-pgp-default-scheme mime-pgp-command-alist))))
+       (if (and command
+		(progn
+		  (if (eq 'pgp50 mime-pgp-default-scheme)
+		      (setq command (concat command (, suffix))))
+		  (exec-installed-p command)))
+	   command
+	 (error "Please specify the valid command name for `%s'."
+		(or mime-pgp-default-scheme 'mime-pgp-default-scheme))))))
+
+(defmacro mime-pgp-default-language ()
+  "Return a symbol of language."
+  '(cond ((eq 'gpg mime-pgp-default-scheme)
+	  nil)
+	 ((eq 'pgp50 mime-pgp-default-scheme)
+	  (or (cdr (assq mime-pgp-default-scheme
+			 mime-pgp-default-language-alist))
+	      'us))
+	 (t
+	  (or (cdr (assq mime-pgp-default-scheme
+			 mime-pgp-default-language-alist))
+	      'en))))
+
+(defmacro mime-pgp-good-signature-regexp ()
+  "Return a regexp to detect ``Good signature''."
+  '(nth 1
+	(assq
+	 (mime-pgp-default-language)
+	 (cdr
+	  (assq
+	   mime-pgp-default-scheme mime-pgp-good-signature-regexp-alist)))))
+
+(defmacro mime-pgp-good-signature-post-function ()
+  "Return a post processing function for arranging the message for
+``Good signature''."
+  '(nth 2
+	(assq
+	 (mime-pgp-default-language)
+	 (cdr
+	  (assq
+	   mime-pgp-default-scheme mime-pgp-good-signature-regexp-alist)))))
+
+(defmacro mime-pgp-key-expected-regexp ()
+  "Return a regexp to detect ``Key expected''."
+  '(nth 1
+	(assq
+	 (mime-pgp-default-language)
+	 (cdr
+	  (assq
+	   mime-pgp-default-scheme mime-pgp-key-expected-regexp-alist)))))
 
 (defun mime-pgp-check-signature (output-buffer orig-file)
   (save-excursion
     (set-buffer output-buffer)
-    (erase-buffer))
-  (let* ((lang (or mime-pgp-default-language 'en))
-	 (status (call-process-region (point-min)(point-max)
-				      mime-pgp-command
-				      nil output-buffer nil
-				      orig-file (format "+language=%s" lang)))
-	 (regexp (cdr (assq lang mime-pgp-good-signature-regexp-alist))))
-    (if (= status 0)
+    (erase-buffer)
+    (setq truncate-lines t))
+  (let* ((lang (mime-pgp-default-language))
+	 (command (mime-pgp-command "v"))
+	 (args (cond ((eq 'gpg mime-pgp-default-scheme)
+		      (list "--verify" (concat orig-file ".sig"))
+		      )
+		     ((eq 'pgp50 mime-pgp-default-scheme)
+		      (list "+batchmode=1"
+			    (format "+language=%s" lang)
+			    (concat orig-file ".sig"))
+		      )
+		     ((eq 'pgp mime-pgp-default-scheme)
+		      (list (format "+language=%s" lang) orig-file))
+		     ))
+	 (regexp (mime-pgp-good-signature-regexp))
+	 (post-function (mime-pgp-good-signature-post-function))
+	 pgp-id)
+    (if (zerop (apply 'call-process-region
+		      (point-min) (point-max) command nil output-buffer nil
+		      args))
 	(save-excursion
 	  (set-buffer output-buffer)
 	  (goto-char (point-min))
-	  (message
-	   (cond ((not (stringp regexp))
-		  "Please specify right regexp for specified language")
-		 ((re-search-forward regexp nil t)
-		  (buffer-substring (match-beginning 0) (match-end 0)))
-		 (t "Bad signature")))
-	  ))))
+	  (cond
+	   ((not (stringp regexp))
+	    (message "Please specify right regexp for specified language")
+	    )
+	   ((re-search-forward regexp nil t)
+	    (message (if post-function
+			 (funcall post-function)
+		       (buffer-substring (match-beginning 0) (match-end 0))))
+	    (goto-char (point-min))
+	    )
+	   ;; PGP 5.0i always returns 0, so we should attempt to fetch.
+	   ((eq 'pgp50 mime-pgp-default-scheme)
+	    (if (not (stringp (setq regexp (mime-pgp-key-expected-regexp))))
+		(message "Please specify right regexp for specified language")
+	      (if (re-search-forward regexp nil t)
+		  (progn
+		    (setq pgp-id
+			  (concat "0x" (buffer-substring-no-properties
+					(match-beginning 1)
+					(match-end 1))))
+		    (if (and
+			 pgp-id
+			 (y-or-n-p
+			  (format "Key %s not found; attempt to fetch? "
+				  pgp-id)
+			  ))
+			(progn
+			  (funcall (pgp-function 'fetch-key) (cons nil pgp-id))
+			  (mime-pgp-check-signature mime-echo-buffer-name
+						    orig-file)
+			  )
+		      (message "Bad signature")
+		      ))
+		(message "Bad signature")
+		))
+	    )
+	   (t
+	    (message "Bad signature")
+	    ))
+	  )
+      (message "Bad signature")
+      nil)))
 
 (defun mime-verify-application/pgp-signature (entity situation)
   "Internal method to check PGP/MIME signature."
@@ -168,39 +311,61 @@ It should be ISO 639 2 letter language code such as en, ja, ...")
     (mime-write-entity orig-entity orig-file)
     (save-excursion (mime-show-echo-buffer))
     (mime-write-entity-content entity sig-file)
-    (or (mime-pgp-check-signature mime-echo-buffer-name orig-file)
-	(let (pgp-id)
+    (if (mime-pgp-check-signature mime-echo-buffer-name orig-file)
+	(let ((other-window-scroll-buffer mime-echo-buffer-name))
+	  (scroll-other-window
+	   (cdr (assq mime-pgp-default-scheme
+		      '((gpg . 5) (pgp50 . 1) (pgp . 10)))))
+	  )
+      (if (eq 'pgp mime-pgp-default-scheme)
 	  (save-excursion
 	    (set-buffer mime-echo-buffer-name)
 	    (goto-char (point-min))
-	    (let ((regexp (cdr (assq (or mime-pgp-default-language 'en)
-				     mime-pgp-key-expected-regexp-alist))))
-	      (cond ((not (stringp regexp))
-		     (message
-		      "Please specify right regexp for specified language")
-		     )
-		    ((re-search-forward regexp nil t)
-		     (setq pgp-id
-			   (concat "0x" (buffer-substring-no-properties
+	    (if (search-forward "\C-g" nil t)
+		(goto-char (match-beginning 0))
+	      (forward-line 7))
+	    (set-window-start
+	     (get-buffer-window mime-echo-buffer-name)
+	     (point))
+	    )
+	(let ((other-window-scroll-buffer mime-echo-buffer-name))
+	  (scroll-other-window
+	   (cdr (assq mime-pgp-default-scheme '((gpg . 5) (pgp50 . 1)))))
+	  ))
+      (let (pgp-id)
+	(save-excursion
+	  (set-buffer mime-echo-buffer-name)
+	  (goto-char (point-min))
+	  (let ((regexp (mime-pgp-key-expected-regexp)))
+	    (cond
+	     ((not (stringp regexp))
+	      (message "Please specify right regexp for specified language")
+	      )
+	     ((re-search-forward regexp nil t)
+	      (setq pgp-id (concat "0x" (buffer-substring-no-properties
 					 (match-beginning 1)
 					 (match-end 1))))
-		     ))))
-	  (if (and pgp-id
-		   (y-or-n-p
-		    (format "Key %s not found; attempt to fetch? " pgp-id))
-		   )
-	      (progn
-		(funcall (pgp-function 'fetch-key) (cons nil pgp-id))
-		(mime-pgp-check-signature mime-echo-buffer-name orig-file)
-		))
-	  ))
-    (let ((other-window-scroll-buffer mime-echo-buffer-name))
-      (scroll-other-window 8)
-      )
+	      ))))
+	(if (and pgp-id
+		 (prog1
+		     (y-or-n-p
+		      (format "Key %s not found; attempt to fetch? " pgp-id))
+		   (message ""))
+		 )
+	    (progn
+	      (funcall (pgp-function 'fetch-key) (cons nil pgp-id))
+	      (mime-pgp-check-signature mime-echo-buffer-name orig-file)
+	      )
+	  )))
     (delete-file orig-file)
     (delete-file sig-file)
     ))
 
+(defun mime-pgp-good-signature-post-function-pgp50-us ()
+  (forward-line 2)
+  (looking-at "\\s +\\(.+\\)$")
+  (format "Good signature from %s" (match-string 1)))
+
 
 ;;; @ Internal method for application/pgp-encrypted
 ;;;
@@ -243,7 +408,49 @@ It should be ISO 639 2 letter language code such as en, ja, ...")
     (kill-buffer (current-buffer))
     ))
 
-	 
+
+;;; @ Command.
+
+(defvar mime-pgp-setversion-hook nil
+  "*Hook run after the value of `mime-pgp-default-scheme' has been changed.
+It is supposed to be used for working `mc-setversion' together with the
+command `mime-pgp-setversion'.  For the purpose, it will be overridden by
+\"semi-setup\" in default.")
+
+(defun mime-pgp-setversion (&optional version)
+  "Select PGP version or GnuPG."
+  (interactive)
+  (let ((table '(("GnuPG" . gpg)   ("PGP 2.6" . pgp)   ("PGP 5.0i" . pgp50)
+		 ("gnupg" . gpg)   ("gpg"     . gpg)
+		 ("pgp"   . pgp)   ("pgp2"    . pgp)   ("pgp2.6"   . pgp)
+		 ("pgp5"  . pgp50) ("pgp5.0"  . pgp50) ("pgp50"    . pgp50)
+		 ("2.6"   . pgp)   ("5.0"     . pgp50)))
+	(msg (interactive-p)))
+    (if msg
+	(setq version
+	      (completing-read
+	       (format "Select PGP version or GnuPG (currently %s): "
+		       (car (rassq mime-pgp-default-scheme table)))
+	       table nil t)
+	      ))
+    (if (zerop (length version))
+	(setq msg (and msg "PGP version is not modified."))
+      (setq mime-pgp-default-scheme (cdr (assoc version table))
+	    msg (and msg (format "PGP version set to \"%s\"." version)))
+      (run-hooks 'mime-pgp-setversion-hook)
+      )
+    (if msg (message "%s" msg))
+    )
+  mime-pgp-default-scheme)
+
+(mime-pgp-setversion
+ (cdr (assq mime-pgp-default-scheme
+	    '((gpg   . "GnuPG")
+	      (pgp50 . "PGP 5.0i")
+	      (pgp   . "PGP 2.6"))
+	    )))
+
+
 ;;; @ end
 ;;;
 
diff --git a/semi-def.el b/semi-def.el
index 33c9a0e..5bf96a2 100644
--- a/semi-def.el
+++ b/semi-def.el
@@ -189,34 +189,59 @@
     ;; for mime-pgp
     (verify		mc-verify			"mc-toplev")
     (decrypt		mc-decrypt			"mc-toplev")
-    (fetch-key		mc-pgp-fetch-key		"mc-pgp")
+    (fetch-key		mc-pgp-fetch-key		"mc-pgp"
+			mc-pgp50-fetch-key		"mc-pgp5"
+			mc-gpg-fetch-key		"mc-gpg")
     (snarf-keys		mc-snarf-keys			"mc-toplev")
     ;; for mime-edit
     (mime-sign		mime-mc-pgp-sign-region		"mime-mc")
-    (traditional-sign	mc-pgp-sign-region		"mc-pgp")
+    (traditional-sign	mc-pgp-sign-region		"mc-pgp"
+			mc-pgp50-sign-region		"mc-pgp5"
+			mc-gpg-sign-region		"mc-gpg")
     (encrypt		mime-mc-pgp-encrypt-region	"mime-mc")
     (insert-key		mc-insert-public-key		"mc-toplev")
     )
   "Alist of service names vs. corresponding functions and its filenames.
-Each element looks like (SERVICE FUNCTION FILE).
+Each element looks like:
 
-SERVICE is a symbol of PGP processing.  It allows `verify', `decrypt',
-`fetch-key', `snarf-keys', `mime-sign', `traditional-sign', `encrypt'
-or `insert-key'.
+\(SERVICE FUNCTION FILE [PGP5_FUNCTION PGP5_FILE [GPG_FUNCTION GPG_FILE]]).
 
-Function is a symbol of function to do specified SERVICE.
+SERVICE is a symbol of PGP2, PGP5 or GnuPG processing.  It allows `verify',
+`decrypt', `fetch-key', `snarf-keys', `mime-sign', `traditional-sign',
+`encrypt' or `insert-key'.
+
+FUNCTION is a symbol of function to do specified SERVICE.
 
 FILE is string of filename which has definition of corresponding
-FUNCTION.")
+FUNCTION.
+
+PGP5_FUNCTION, PGP5_FILE, GPG_FUNCTION and GPG_FILE are similar to
+FUNCTION and FILE, but they will be used for PGP 5.0i or GnuPG.")
 
 (defmacro pgp-function (method)
   "Return function to do service METHOD."
-  `(cadr (assq ,method (symbol-value 'pgp-function-alist))))
+  `(let ((elem (assq ,method (symbol-value 'pgp-function-alist))))
+     (require 'mailcrypt)
+     (cond ((eq 'mc-scheme-gpg (symbol-value 'mc-default-scheme))
+	    (if (> (length elem) 3)
+		(nth 5 elem)
+	      (nth 1 elem))
+	    )
+	   ((eq 'mc-scheme-pgp50 (symbol-value 'mc-default-scheme))
+	    (if (> (length elem) 3)
+		(nth 3 elem)
+	      (nth 1 elem))
+	    )
+	   (t
+	    (nth 1 elem)
+	    ))))
 
 (mapcar (function
-	 (lambda (method)
-	   (autoload (cadr method)(nth 2 method))
-	   ))
+	 (lambda (elem)
+	   (setq elem (cdr elem))
+	   (while elem
+	     (autoload (car elem) (nth 1 elem))
+	     (setq elem (nthcdr 2 elem)))))
 	pgp-function-alist)
 
 
diff --git a/semi-setup.el b/semi-setup.el
index 9928d1e..168ce71 100644
--- a/semi-setup.el
+++ b/semi-setup.el
@@ -1,6 +1,6 @@
 ;;; semi-setup.el --- setup file for MIME-View.
 
-;; Copyright (C) 1994,1995,1996,1997,1998 Free Software Foundation, Inc.
+;; Copyright (C) 1994,1995,1996,1997,1998,1999 Free Software Foundation, Inc.
 
 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
 ;; Keywords: mail, news, MIME, multimedia, multilingual, encoded-word
@@ -85,7 +85,7 @@ it is used as hook to set."
 ;; for PGP
 (defvar mime-setup-enable-pgp
   (module-installed-p 'mailcrypt)
-  "*If it is non-nil, semi-setup sets uf to use mime-pgp.")
+  "*If it is non-nil, semi-setup sets up to use mime-pgp.")
 
 (if mime-setup-enable-pgp
     (eval-after-load "mime-view"
@@ -126,6 +126,26 @@ it is used as hook to set."
 	 ))
   )
 
+(if mime-setup-enable-pgp
+    (progn
+      (autoload 'mime-pgp-setversion "mime-pgp" nil t)
+      (add-hook
+       'mime-pgp-setversion-hook
+       (function
+	(lambda ()
+	  (require 'mailcrypt)
+	  (condition-case nil
+	      (let ((version
+		     (cdr (assq (symbol-value 'mime-pgp-default-scheme)
+				'((gpg   . "gpg")
+				  (pgp50 . "5.0")
+				  (pgp   . "2.6"))))))
+		(eval (list 'mc-setversion version))
+		)
+	    (error nil))
+	  )))
+      ))
+
 
 ;;; @ for mime-edit
 ;;;