1 \input texinfo @c -*- mode: texinfo -*-
3 @setfilename ../../info/epa
4 @settitle EasyPG Assistant User's Manual
10 This file describes EasyPG Assistant @value{VERSION}.
12 Copyright @copyright{} 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
15 Permission is granted to copy, distribute and/or modify this document
16 under the terms of the GNU Free Documentation License, Version 1.3 or
17 any later version published by the Free Software Foundation; with no
18 Invariant Sections, with the Front-Cover texts being ``A GNU Manual,''
19 and with the Back-Cover Texts as in (a) below. A copy of the license
20 is included in the section entitled ``GNU Free Documentation License''
23 (a) The FSF's Back-Cover Text is: ``You have the freedom to copy and
24 modify this GNU manual. Buying copies from the FSF supports it in
25 developing GNU and promoting software freedom.''
27 This document is part of a collection distributed under the GNU Free
28 Documentation License. If you want to distribute this document
29 separately from the collection, you can do so by adding a copy of the
30 license to the document, as described in section 6 of the license.
34 @dircategory Emacs misc features
36 * EasyPG Assistant: (epa). An Emacs user interface to GNU Privacy Guard.
40 @title EasyPG Assistant
45 @vskip 0pt plus 1filll
52 @top EasyPG Assistant user's manual
54 EasyPG Assistant is an Emacs user interface to GNU Privacy Guard
55 (GnuPG, @pxref{Top, , Top, gnupg, Using the GNU Privacy Guard}).
57 EasyPG Assistant is a part of the package called EasyPG, an all-in-one
58 GnuPG interface for Emacs. EasyPG also contains the library interface
59 called EasyPG Library.
74 EasyPG Assistant provides the following features.
78 @item Cryptographic operations on regions.
79 @item Cryptographic operations on files.
80 @item Dired integration.
81 @item Mail-mode integration.
82 @item Automatic encryption/decryption of *.gpg files.
88 EasyPG Assistant commands are prefixed by @samp{epa-}. For example,
91 @item To browse your keyring, type @kbd{M-x epa-list-keys}
93 @item To create a cleartext signature of the region, type @kbd{M-x epa-sign-region}
95 @item To encrypt a file, type @kbd{M-x epa-encrypt-file}
98 EasyPG Assistant provides several cryptographic features which can be
99 integrated into other Emacs functionalities. For example, automatic
100 encryption/decryption of @samp{*.gpg} files.
105 This chapter introduces various commands for typical use cases.
109 * Cryptographic operations on regions::
110 * Cryptographic operations on files::
111 * Dired integration::
112 * Mail-mode integration::
113 * Encrypting/decrypting *.gpg files::
117 @section Key management
118 Probably the first step of using EasyPG Assistant is to browse your
119 keyring. @kbd{M-x epa-list-keys} is corresponding to @samp{gpg
120 --list-keys} from the command line.
122 @deffn Command epa-list-keys name mode
123 Show all keys matched with @var{name} from the public keyring.
127 The output looks as follows.
130 u A5B6B2D4B15813FE Daiki Ueno <ueno@@unixuser.org>
134 A character on the leftmost column indicates the trust level of the
135 key. If it is @samp{u}, the key is marked as ultimately trusted. The
136 second column is the key ID, and the rest is the user ID.
138 You can move over entries by @key{TAB}. If you type @key{RET} or
139 click button1 on an entry, you will see more detailed information
140 about the key you selected.
143 u Daiki Ueno <ueno@@unixuser.org>
144 u A5B6B2D4B15813FE 1024bits DSA
147 Capabilities: sign certify
148 Fingerprint: 8003 7CD0 0F1A 9400 03CA 50AA A5B6 B2D4 B158 13FE
149 u 4447461B2A9BEA2D 2048bits ELGAMAL_E
152 Capabilities: encrypt
153 Fingerprint: 9003 D76B 73B7 4A8A E588 10AF 4447 461B 2A9B EA2D
157 To browse your private keyring, use @kbd{M-x epa-list-secret-keys}.
159 @deffn Command epa-list-secret-keys name
160 Show all keys matched with @var{name} from the private keyring.
164 In @samp{*Keys*} buffer, several commands are available. The common
165 use case is to export some keys to a file. To do that, type @kbd{m}
166 to select keys, type @kbd{o}, and then supply the filename.
168 Below are other commands related to key management. Some of them take
169 a file as input/output, and others take the current region.
171 @deffn Command epa-insert-keys keys
172 Insert selected @var{keys} after the point. It will let you select
173 keys before insertion. By default, it will encode keys in the OpenPGP
177 @deffn Command epa-import-keys file
178 Import keys from @var{file} to your keyring.
181 @deffn Command epa-import-keys-region start end
182 Import keys from the current region between @var{start} and @var{end}
186 @deffn Command epa-import-armor-in-region start end
187 Import keys in the OpenPGP armor format in the current region between
188 @var{start} and @var{end}. The difference from
189 @code{epa-import-keys-region} is that
190 @code{epa-import-armor-in-region} searches armors in the region and
191 applies @code{epa-import-keys-region} to each of them.
194 @deffn Command epa-delete-keys allow-secret
195 Delete selected keys. If @var{allow-secret} is non-@code{nil}, it
196 also delete the secret keys.
199 @node Cryptographic operations on regions
200 @section Cryptographic operations on regions
202 @deffn Command epa-decrypt-region start end
203 Decrypt the current region between @var{start} and @var{end}. It
204 replaces the region with the decrypted text.
207 @deffn Command epa-decrypt-armor-in-region start end
208 Decrypt OpenPGP armors in the current region between @var{start} and
209 @var{end}. The difference from @code{epa-decrypt-region} is that
210 @code{epa-decrypt-armor-in-region} searches armors in the region
211 and applies @code{epa-decrypt-region} to each of them. That is, this
212 command does not alter the original text around armors.
215 @deffn Command epa-verify-region start end
216 Verify the current region between @var{start} and @var{end}. It sends
217 the verification result to the minibuffer or a popup window. It
218 replaces the region with the signed text.
221 @deffn Command epa-verify-cleartext-in-region
222 Verify OpenPGP cleartext blocks in the current region between
223 @var{start} and @var{end}. The difference from
224 @code{epa-verify-region} is that @code{epa-verify-cleartext-in-region}
225 searches OpenPGP cleartext blocks in the region and applies
226 @code{epa-verify-region} to each of them. That is, this command does
227 not alter the original text around OpenPGP cleartext blocks.
230 @deffn Command epa-sign-region start end signers type
231 Sign the current region between @var{start} and @var{end}. By
232 default, it creates a cleartext signature. If a prefix argument is
233 given, it will let you select signing keys, and then a signature
237 @deffn Command epa-encrypt-region start end recipients sign signers
238 Encrypt the current region between @var{start} and @var{end}. It will
239 let you select recipients. If a prefix argument is given, it will
240 also ask you whether or not to sign the text before encryption and if
241 you answered yes, it will let you select the signing keys.
244 @node Cryptographic operations on files
245 @section Cryptographic operations on files
247 @deffn Command epa-decrypt-file file
251 @deffn Command epa-verify-file file
255 @deffn Command epa-sign-file file signers type
256 Sign @var{file}. If a prefix argument is given, it will let you
257 select signing keys, and then a signature type.
260 @deffn Command epa-encrypt-file file recipients
261 Encrypt @var{file}. It will let you select recipients.
264 @node Dired integration
265 @section Dired integration
267 EasyPG Assistant extends Dired Mode for GNU Emacs to allow users to
268 easily do cryptographic operations on files. For example,
273 : e (or M-x epa-dired-do-encrypt)
274 (select recipients by 'm' and click [OK])
278 The following keys are assigned.
283 @findex epa-dired-do-decrypt
284 Decrypt marked files.
288 @findex epa-dired-do-verify
293 @findex epa-dired-do-sign
298 @findex epa-dired-do-encrypt
299 Encrypt marked files.
303 @node Mail-mode integration
304 @section Mail-mode integration
306 EasyPG Assistant provides a minor mode @code{epa-mail-mode} to help
307 user compose inline PGP messages. Inline PGP is a traditional style
308 of sending signed/encrypted emails by embedding raw OpenPGP blobs
309 inside a message body, not using modern MIME format.
311 NOTE: Inline PGP is not recommended and you should consider to use
313 @uref{http://josefsson.org/inline-openpgp-considered-harmful.html,
314 Inline PGP in E-mail is bad, Mm'kay?}.
317 Once @code{epa-mail-mode} is enabled, the following keys are assigned.
318 You can do it by @kbd{C-u 1 M-x epa-mail-mode} or through the Customize
319 interface. Try @kbd{M-x customize-variable epa-global-mail-mode}.
323 @kindex @kbd{C-c C-e d}
324 @findex epa-mail-decrypt
325 Decrypt OpenPGP armors in the current buffer.
328 @kindex @kbd{C-c C-e v}
329 @findex epa-mail-verify
330 Verify OpenPGP cleartext signed messages in the current buffer.
333 @kindex @kbd{C-c C-e s}
334 @findex epa-mail-sign
335 Compose a signed message from the current buffer.
338 @kindex @kbd{C-c C-e e}
339 @findex epa-mail-encrypt
340 Compose an encrypted message from the current buffer.
341 By default it tries to build the recipient list from @samp{to},
342 @samp{cc}, and @samp{bcc} fields of the mail header. To include your
343 key in the recipient list, use @samp{encrypt-to} option in
344 @file{~/.gnupg/gpg.conf}.
348 @node Encrypting/decrypting *.gpg files
349 @section Encrypting/decrypting *.gpg files
350 By default, every file whose extension is @samp{.gpg} will be treated
351 as encrypted. That is, when you attempt to open such a file which
352 already exists, the decrypted text is inserted in the buffer rather
353 than encrypted one. On the other hand, when you attempt to save the
354 buffer to a file whose extension is @samp{.gpg}, encrypted data is
357 If you want to temporarily disable this behavior, use @kbd{M-x
358 epa-file-disable}, and then to enable this behavior use @kbd{M-x
361 @deffn Command epa-file-disable
362 Disable automatic encryption/decryption of *.gpg files.
365 @deffn Command epa-file-enable
366 Enable automatic encryption/decryption of *.gpg files.
370 @code{epa-file} will let you select recipients. If you want to
371 suppress this question, it might be a good idea to put the following
372 line on the first line of the text being encrypted.
373 @vindex epa-file-encrypt-to
377 ;; -*- epa-file-encrypt-to: ("ueno@@unixuser.org") -*-
381 The file name extension of encrypted files can be controlled by
382 @var{epa-file-name-regexp}.
384 @defvar epa-file-name-regexp
385 Regexp which matches filenames treated as encrypted.
388 Other variables which control the automatic encryption/decryption
391 @defvar epa-file-cache-passphrase-for-symmetric-encryption
392 If non-@code{nil}, cache passphrase for symmetric encryption. The
393 default value is @code{nil}.
396 @defvar epa-file-inhibit-auto-save
397 If non-@code{nil}, disable auto-saving when opening an encrypted file.
398 The default value is @code{t}.
406 arch-tag: 7404e246-7d4c-4db4-9332-c1293a455a4f