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
|
/*
* Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <string.h>
#include "apps.h"
#include "progs.h"
#include <openssl/bn.h>
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_HEX, OPT_GENERATE, OPT_BITS, OPT_SAFE, OPT_CHECKS
} OPTION_CHOICE;
const OPTIONS prime_options[] = {
{OPT_HELP_STR, 1, '-', "Usage: %s [options] [number...]\n"},
{OPT_HELP_STR, 1, '-',
" number Number to check for primality\n"},
{"help", OPT_HELP, '-', "Display this summary"},
{"hex", OPT_HEX, '-', "Hex output"},
{"generate", OPT_GENERATE, '-', "Generate a prime"},
{"bits", OPT_BITS, 'p', "Size of number in bits"},
{"safe", OPT_SAFE, '-',
"When used with -generate, generate a safe prime"},
{"checks", OPT_CHECKS, 'p', "Number of checks"},
{NULL}
};
int prime_main(int argc, char **argv)
{
BIGNUM *bn = NULL;
int hex = 0, checks = 20, generate = 0, bits = 0, safe = 0, ret = 1;
char *prog;
OPTION_CHOICE o;
prog = opt_init(argc, argv, prime_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(prime_options);
ret = 0;
goto end;
case OPT_HEX:
hex = 1;
break;
case OPT_GENERATE:
generate = 1;
break;
case OPT_BITS:
bits = atoi(opt_arg());
break;
case OPT_SAFE:
safe = 1;
break;
case OPT_CHECKS:
checks = atoi(opt_arg());
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (generate) {
if (argc != 0) {
BIO_printf(bio_err, "Extra arguments given.\n");
goto opthelp;
}
} else if (argc == 0) {
BIO_printf(bio_err, "%s: No prime specified\n", prog);
goto opthelp;
}
if (generate) {
char *s;
if (!bits) {
BIO_printf(bio_err, "Specify the number of bits.\n");
goto end;
}
bn = BN_new();
if (bn == NULL) {
BIO_printf(bio_err, "Out of memory.\n");
goto end;
}
if (!BN_generate_prime_ex(bn, bits, safe, NULL, NULL, NULL)) {
BIO_printf(bio_err, "Failed to generate prime.\n");
goto end;
}
s = hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
if (s == NULL) {
BIO_printf(bio_err, "Out of memory.\n");
goto end;
}
BIO_printf(bio_out, "%s\n", s);
OPENSSL_free(s);
} else {
for ( ; *argv; argv++) {
int r;
if (hex)
r = BN_hex2bn(&bn, argv[0]);
else
r = BN_dec2bn(&bn, argv[0]);
if (!r) {
BIO_printf(bio_err, "Failed to process value (%s)\n", argv[0]);
goto end;
}
BN_print(bio_out, bn);
BIO_printf(bio_out, " (%s) %s prime\n",
argv[0],
BN_is_prime_ex(bn, checks, NULL, NULL)
? "is" : "is not");
}
}
ret = 0;
end:
BN_free(bn);
return ret;
}
|
