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
|
/* This example demonstrates how to use the low-level interface to
encrypt a file. */
#define _GNU_SOURCE
#include <error.h>
#include <errno.h>
#include <stdio.h>
#include <sequoia/openpgp.h>
int
main (int argc, char **argv)
{
pgp_status_t rc;
pgp_error_t err;
int use_armor = 1;
pgp_tpk_t tpk;
pgp_writer_t sink;
pgp_writer_stack_t writer = NULL;
if (argc != 2)
error (1, 0, "Usage: %s <keyfile> <plain >cipher", argv[0]);
tpk = pgp_tpk_from_file (&err, argv[1]);
if (tpk == NULL)
error (1, 0, "pgp_tpk_from_file: %s", pgp_error_to_string (err));
sink = pgp_writer_from_fd (STDOUT_FILENO);
if (use_armor)
sink = pgp_armor_writer_new (&err, sink, PGP_ARMOR_KIND_MESSAGE,
NULL, 0);
writer = pgp_writer_stack_message (sink);
writer = pgp_encryptor_new (&err,
writer,
NULL, 0, /* no passwords */
&tpk, 1,
PGP_ENCRYPTION_MODE_FOR_TRANSPORT,
9 /* AES256 */);
if (writer == NULL)
error (1, 0, "pgp_encryptor_new: %s", pgp_error_to_string (err));
writer = pgp_literal_writer_new (&err, writer);
if (writer == NULL)
error (1, 0, "pgp_literal_writer_new: %s", pgp_error_to_string (err));
size_t nread;
uint8_t buf[4096];
while ((nread = fread (buf, 1, sizeof buf, stdin)))
{
uint8_t *b = buf;
while (nread)
{
ssize_t written;
written = pgp_writer_stack_write (&err, writer, b, nread);
if (written < 0)
error (1, 0, "pgp_writer_stack_write: %s", pgp_error_to_string (err));
b += written;
nread -= written;
}
}
rc = pgp_writer_stack_finalize (&err, writer);
writer = NULL;
if (rc)
error (1, 0, "pgp_writer_stack_write: %s", pgp_error_to_string (err));
pgp_tpk_free (tpk);
return 0;
}
|