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- /* Copyright (c) 2008-2013, 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 "../common/util.h"
- #include "compat.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();
- 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);
- str = BN_bn2hex(rsa->n);
- printf("%s\n", str);
- }
- return 0;
- }
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