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
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <glib.h>
#include <pbc.h>
#include <pbc_random.h>
#include "bswabe.h"
#include "common.h"
#include "policy_lang.h"
char* usage =
"Usage: peks-trap [OPTION ...] PUB_KEY MSK_KEY KEYWORD\n"
"\n"
"Generate an encrypted trapdoor given a clear keyword KEYWORD.\n"
"It uses the public key PUB_KEY and the master key MSK_KEY.\n"
"The encrypted trapdoor will be written to the file \"enc_trap\"\n"
"unless the --output is used.\n"
"\n"
"Mandatory arguments to long options are mandatory for short options too.\n\n"
" -h, --help print this message\n\n"
" -v, --version print version information\n\n"
" -o, --output FILE write index to FILE\n\n"
" -d, --deterministic use deterministic \"random\" numbers\n"
"";
char* pub_file = 0;
char* msk_file = 0;
char* keyword = 0;
char* out_file = "enc_trap";
void
parse_args( int argc, char** argv )
{
int i;
for( i = 1; i < argc; i++ )
if( !strcmp(argv[i], "-h") || !strcmp(argv[i], "--help") )
{
printf("%s", usage);
exit(0);
}
else if( !strcmp(argv[i], "-v") || !strcmp(argv[i], "--version") )
{
printf(CPABE_VERSION, "-keygen");
exit(0);
}
else if( !strcmp(argv[i], "-o") || !strcmp(argv[i], "--output") )
{
if( ++i >= argc )
die(usage);
else
out_file = argv[i];
}
else if( !strcmp(argv[i], "-d") || !strcmp(argv[i], "--deterministic") )
{
pbc_random_set_deterministic(0);
}
else if( !pub_file )
{
pub_file = argv[i];
}
else if( !msk_file )
{
msk_file = argv[i];
}
else if( !keyword )
{
keyword = argv[i];
}
if( !pub_file || !msk_file || !keyword)
// if( !pub_file || !ind_file)
die(usage);
}
int
main( int argc, char** argv )
{
bswabe_msk_t* msk;
bswabe_pub_t* pub;
peks_trap_t* trap;
char bufKeyword[256];
parse_args(argc, argv);
/* Retrieve public key */
pub = bswabe_pub_unserialize(suck_file(pub_file), 1);
msk = bswabe_msk_unserialize(pub, suck_file(msk_file), 1);
/* It is necessary to add \n at the end of the keyword */
strcpy(bufKeyword, keyword);
strcat(bufKeyword, "\n");
trap = peks_trap( pub, msk, bufKeyword );
spit_file(out_file, peks_trap_serialize(trap), 1);
return 0;
}
|
