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
|
/* Copyright 2006 Nick Mathewson; see LICENSE for licensing information */
/* id_to_fp.c : Helper for directory authority ops. When somebody sends us
* a private key, this utility converts the private key into a fingerprint
* so you can de-list that fingerprint.
*/
#include <openssl/rsa.h>
#include <openssl/bio.h>
#include <openssl/sha.h>
#include <openssl/pem.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define die(s) do { fprintf(stderr, "%s\n", s); goto err; } while (0)
int
main(int argc, char **argv)
{
BIO *b = NULL;
RSA *key = NULL;
unsigned char *buf = NULL, *bufp;
int len, i;
unsigned char digest[20];
int status = 1;
if (argc < 2) {
fprintf(stderr, "Reading key from stdin...\n");
if (!(b = BIO_new_fp(stdin, BIO_NOCLOSE)))
die("couldn't read from stdin");
} else if (argc == 2) {
if (strcmp(argv[1], "-h") == 0 ||
strcmp(argv[1], "--help") == 0) {
fprintf(stdout, "Usage: %s [keyfile]\n", argv[0]);
status = 0;
goto err;
} else {
if (!(b = BIO_new_file(argv[1], "r")))
die("couldn't open file");
}
} else {
fprintf(stderr, "Usage: %s [keyfile]\n", argv[0]);
goto err;
}
if (!(key = PEM_read_bio_RSAPrivateKey(b, NULL, NULL, NULL)))
die("couldn't parse key");
len = i2d_RSAPublicKey(key, NULL);
if (len < 0)
die("Bizarre key");
bufp = buf = malloc(len+1);
if (!buf)
die("Out of memory");
len = i2d_RSAPublicKey(key, &bufp);
if (len < 0)
die("Bizarre key");
SHA1(buf, len, digest);
for (i=0; i < 20; i += 2) {
printf("%02X%02X ", (int)digest[i], (int)digest[i+1]);
}
printf("\n");
status = 0;
err:
if (buf)
free(buf);
if (key)
RSA_free(key);
if (b)
BIO_free(b);
return status;
}
|