summaryrefslogtreecommitdiff
path: root/manual/gnutls-guile/Importing-OpenPGP-Keys-Guile-Example.html
blob: 8e8b82388c355c139a5788dc4159358958725423 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- This manual is last updated 16 March 2016 for version
3.5.4 of GnuTLS.

Copyright (C) 2001-2012, 2014, 2016 Free Software Foundation, Inc.

Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with no
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.  A
copy of the license is included in the section entitled "GNU Free
Documentation License". -->
<!-- Created by GNU Texinfo 6.1, http://www.gnu.org/software/texinfo/ -->
<head>
<title>GnuTLS-Guile 3.5.4: Importing OpenPGP Keys Guile Example</title>

<meta name="description" content="GnuTLS-Guile 3.5.4: Importing OpenPGP Keys Guile Example">
<meta name="keywords" content="GnuTLS-Guile 3.5.4: Importing OpenPGP Keys Guile Example">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link href="index.html#Top" rel="start" title="Top">
<link href="Procedure-Index.html#Procedure-Index" rel="index" title="Procedure Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Guile-Examples.html#Guile-Examples" rel="up" title="Guile Examples">
<link href="Guile-Reference.html#Guile-Reference" rel="next" title="Guile Reference">
<link href="OpenPGP-Authentication-Guile-Example.html#OpenPGP-Authentication-Guile-Example" rel="prev" title="OpenPGP Authentication Guile Example">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em}
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smalllisp {margin-left: 3.2em}
kbd {font-style: oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: inherit; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: inherit; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nolinebreak {white-space: nowrap}
span.roman {font-family: initial; font-weight: normal}
span.sansserif {font-family: sans-serif; font-weight: normal}
ul.no-bullet {list-style: none}
body { 
	margin: 2%;
	padding: 0 5%;
	background: #ffffff;
}
h1,h2,h3,h4,h5 {
    font-weight: bold;
    padding: 5px 5px 5px 5px;
    background-color: #c2e0ff;
    color: #336699;
}
h1 {
    padding: 2em 2em 2em 5%;
    color: white;
    background: #336699;
    text-align: center;
    letter-spacing: 3px;
}
h2 { text-decoration: underline; }
pre {
  margin: 0 5%;
  padding: 0.5em;
}
pre.example,pre.verbatim {
  padding-bottom: 1em;

  border: solid #c2e0ff;
  background: #f0faff;
  border-width: 1px 1px 1px 5px;
  margin: 1em auto;
  width: 90%;
}

div.node {
  margin: 0 -5% 0 -2%;
  padding: 0.5em 0.5em;
  margin-top: 0.5em;
  margin-bottom: 0.5em;
  font-weight: bold;
}
dd, li {
  padding-top: 0.1em;
  padding-bottom: 0.1em;
}
div.float {

  margin-bottom: 0.5em;
  text-align: center;
}

table {
  text-align: left;
  margin-left:auto;
  margin-right:auto;
  border-spacing: 7px;
  width: 50%;
}

th {
  padding: 0;
  color: #336699;
  background-color: #c2e0ff;
  border: solid #000000;
  border-width: 0px;
  margin: 1em auto;
  text-align: center;
  margin-left:auto;
  margin-right:auto;
}

td {
  padding: 0;
  border: solid #000000;
  background-color: #f0faff;
  border-width: 0px;
  margin: 1em auto;
  text-align: left;
  margin-left:auto;
  margin-right:auto;
  padding-left: 1em;
}

dl {
  text-align: left;
  margin-left:auto;
  margin-right:auto;
  width: 50%;

  padding-left: 1em;
  border: solid #c2e0ff;
  background: #f0faff;
  border-width: 5px 1px 1px 1px;
  margin: 1em auto;
}

-->
</style>


</head>

<body lang="en">
<a name="Importing-OpenPGP-Keys-Guile-Example"></a>
<div class="header">
<p>
Previous: <a href="OpenPGP-Authentication-Guile-Example.html#OpenPGP-Authentication-Guile-Example" accesskey="p" rel="prev">OpenPGP Authentication Guile Example</a>, Up: <a href="Guile-Examples.html#Guile-Examples" accesskey="u" rel="up">Guile Examples</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Procedure-Index.html#Procedure-Index" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Importing-OpenPGP-Keys-Guile-Example-1"></a>
<h3 class="section">4.3 Importing OpenPGP Keys Guile Example</h3>

<p>The following example provides a simple way of importing
&ldquo;ASCII-armored&rdquo; OpenPGP keys from files, using the
<code>import-openpgp-certificate</code> and <code>import-openpgp-private-key</code>
procedures.
</p>
<a name="index-openpgp_002dcertificate_002dformat_002fbase64"></a>
<a name="index-openpgp_002dcertificate_002dformat_002fraw"></a>

<div class="example">
<pre class="example">(use-modules (srfi srfi-4)
             (gnutls))

(define (import-key-from-file import-proc file)
  ;; Import OpenPGP key from FILE using IMPORT-PROC.

  ;; Prepare a u8vector large enough to hold the raw
  ;; key contents.
  (let* ((size (stat:size (stat path)))
         (raw  (make-u8vector size)))

    ;; Fill in the u8vector with the contents of FILE.
    (uniform-vector-read! raw (open-input-file file))

    ;; Pass the u8vector to the import procedure.
    (import-proc raw openpgp-certificate-format/base64)))


(define (import-public-key-from-file file)
  (import-key-from-file import-openpgp-certificate file))

(define (import-private-key-from-file file)
  (import-key-from-file import-openpgp-private-key file))
</pre></div>

<p>The procedures <code>import-public-key-from-file</code> and
<code>import-private-key-from-file</code> can be passed a file name.  They
return an OpenPGP public key and private key object, respectively
(see <a href="Guile-Reference.html#Guile-Reference">OpenPGP key objects</a>).
</p>




</body>
</html>