tor/src/tools/tor-checkkey.c
Yawning Angel b563a3a09d Bug 19406: OpenSSL made RSA and DH opaque in 1.1.0.
There's accessors to get at things, but it ends up being rather
cumbersome.  The only place where behavior should change is that the
code will fail instead of attempting to generate a new DH key if our
internal sanity check fails.

Like the previous commit, this probably breaks snapshots prior to pre5.
2016-06-14 12:13:09 -04:00

90 lines
1.8 KiB
C

/* Copyright (c) 2008-2015, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#include "orconfig.h"
#include <stdio.h>
#include <stdlib.h>
#include "crypto.h"
#include "torlog.h"
#include "util.h"
#include "compat.h"
#include "compat_openssl.h"
#include <openssl/bn.h>
#include <openssl/rsa.h>
int
main(int c, char **v)
{
crypto_pk_t *env;
char *str;
RSA *rsa;
int wantdigest=0;
int fname_idx;
char *fname=NULL;
init_logging(1);
if (c < 2) {
fprintf(stderr, "Hi. I'm tor-checkkey. Tell me a filename that "
"has a PEM-encoded RSA public key (like in a cert) and I'll "
"dump the modulus. Use the --digest option too and I'll "
"dump the digest.\n");
return 1;
}
if (crypto_global_init(0, NULL, NULL)) {
fprintf(stderr, "Couldn't initialize crypto library.\n");
return 1;
}
if (!strcmp(v[1], "--digest")) {
wantdigest = 1;
fname_idx = 2;
if (c<3) {
fprintf(stderr, "too few arguments");
return 1;
}
} else {
wantdigest = 0;
fname_idx = 1;
}
fname = expand_filename(v[fname_idx]);
str = read_file_to_str(fname, 0, NULL);
tor_free(fname);
if (!str) {
fprintf(stderr, "Couldn't read %s\n", v[fname_idx]);
return 1;
}
env = crypto_pk_new();
if (crypto_pk_read_public_key_from_string(env, str, strlen(str))<0) {
fprintf(stderr, "Couldn't parse key.\n");
return 1;
}
tor_free(str);
if (wantdigest) {
char digest[HEX_DIGEST_LEN+1];
if (crypto_pk_get_fingerprint(env, digest, 0)<0)
return 1;
printf("%s\n",digest);
} else {
rsa = crypto_pk_get_rsa_(env);
BIGNUM *rsa_n;
#ifdef OPENSSL_1_1_API
BIGNUM *rsa_e, *rsa_d;
RSA_get0_key(rsa, &rsa_n, &rsa_e, &rsa_d);
#else
rsa_n = rsa->n;
#endif
str = BN_bn2hex(rsa_n);
printf("%s\n", str);
}
return 0;
}