*/
#include "includes.h"
-RCSID("$OpenBSD: ssh-keygen.c,v 1.93 2002/02/24 19:14:59 markus Exp $");
+RCSID("$OpenBSD: ssh-keygen.c,v 1.117 2004/07/11 17:48:47 deraadt Exp $");
#include <openssl/evp.h>
#include <openssl/pem.h>
#include "bufaux.h"
#include "pathnames.h"
#include "log.h"
-#include "readpass.h"
+#include "misc.h"
#ifdef SMARTCARD
-#include <sectok.h>
-#include <openssl/engine.h>
#include "scard.h"
#endif
+#include "dns.h"
/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */
int bits = 1024;
int convert_to_ssh2 = 0;
int convert_from_ssh2 = 0;
int print_public = 0;
+int print_generic = 0;
char *key_type_name = NULL;
/* argv0 */
-#ifdef HAVE___PROGNAME
extern char *__progname;
-#else
-char *__progname;
-#endif
char hostname[MAXHOSTNAMELEN];
+/* moduli.c */
+int gen_candidates(FILE *, int, int, BIGNUM *);
+int prime_test(FILE *, FILE *, u_int32_t, u_int32_t);
+
static void
ask_filename(struct passwd *pw, const char *prompt)
{
snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
fprintf(stderr, "%s (%s): ", prompt, identity_file);
- fflush(stderr);
if (fgets(buf, sizeof(buf), stdin) == NULL)
exit(1);
if (strchr(buf, '\n'))
}
#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
-#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
+#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
do_convert_to_ssh2(struct passwd *pw)
{
Key *k;
- int len;
+ u_int len;
u_char *blob;
struct stat st;
exit(1);
}
}
+ if (k->type == KEY_RSA1) {
+ fprintf(stderr, "version 1 keys are not supported\n");
+ exit(1);
+ }
if (key_to_blob(k, &blob, &len) <= 0) {
fprintf(stderr, "key_to_blob failed\n");
exit(1);
}
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
fprintf(stdout,
- "Comment: \"%d-bit %s, converted from OpenSSH by %s@%s\"\n",
+ "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n",
key_size(k), key_type(k),
pw->pw_name, hostname);
dump_base64(stdout, blob, len);
static void
buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
{
- int bits = buffer_get_int(b);
- int bytes = (bits + 7) / 8;
+ u_int bignum_bits = buffer_get_int(b);
+ u_int bytes = (bignum_bits + 7) / 8;
if (buffer_len(b) < bytes)
fatal("buffer_get_bignum_bits: input buffer too small: "
{
Key *k;
int blen;
+ u_int len;
char line[1024], *p;
u_char blob[8096];
char encoded[8096];
*p = '\0';
strlcat(encoded, line, sizeof(encoded));
}
+ len = strlen(encoded);
+ if (((len % 4) == 3) &&
+ (encoded[len-1] == '=') &&
+ (encoded[len-2] == '=') &&
+ (encoded[len-3] == '='))
+ encoded[len-3] = '\0';
blen = uudecode(encoded, blob, sizeof(blob));
if (blen < 0) {
fprintf(stderr, "uudecode failed.\n");
}
#ifdef SMARTCARD
-#define NUM_RSA_KEY_ELEMENTS 5+1
-#define COPY_RSA_KEY(x, i) \
- do { \
- len = BN_num_bytes(prv->rsa->x); \
- elements[i] = xmalloc(len); \
- debug("#bytes %d", len); \
- if (BN_bn2bin(prv->rsa->x, elements[i]) < 0) \
- goto done; \
- } while (0)
-
-static int
-get_AUT0(char *aut0)
-{
- EVP_MD *evp_md = EVP_sha1();
- EVP_MD_CTX md;
- char *pass;
-
- pass = read_passphrase("Enter passphrase for smartcard: ", RP_ALLOW_STDIN);
- if (pass == NULL)
- return -1;
- EVP_DigestInit(&md, evp_md);
- EVP_DigestUpdate(&md, pass, strlen(pass));
- EVP_DigestFinal(&md, aut0, NULL);
- memset(pass, 0, strlen(pass));
- xfree(pass);
- return 0;
-}
-
static void
do_upload(struct passwd *pw, const char *sc_reader_id)
{
Key *prv = NULL;
struct stat st;
- u_char *elements[NUM_RSA_KEY_ELEMENTS];
- u_char key_fid[2];
- u_char DEFAUT0[] = {0xad, 0x9f, 0x61, 0xfe, 0xfa, 0x20, 0xce, 0x63};
- u_char AUT0[EVP_MAX_MD_SIZE];
- int len, status = 1, i, fd = -1, ret;
- int sw = 0, cla = 0x00;
-
- for (i = 0; i < NUM_RSA_KEY_ELEMENTS; i++)
- elements[i] = NULL;
+ int ret;
+
if (!have_identity)
ask_filename(pw, "Enter file in which the key is");
if (stat(identity_file, &st) < 0) {
perror(identity_file);
- goto done;
+ exit(1);
}
prv = load_identity(identity_file);
if (prv == NULL) {
error("load failed");
- goto done;
- }
- COPY_RSA_KEY(q, 0);
- COPY_RSA_KEY(p, 1);
- COPY_RSA_KEY(iqmp, 2);
- COPY_RSA_KEY(dmq1, 3);
- COPY_RSA_KEY(dmp1, 4);
- COPY_RSA_KEY(n, 5);
- len = BN_num_bytes(prv->rsa->n);
- fd = sectok_friendly_open(sc_reader_id, STONOWAIT, &sw);
- if (fd < 0) {
- error("sectok_open failed: %s", sectok_get_sw(sw));
- goto done;
- }
- if (! sectok_cardpresent(fd)) {
- error("smartcard in reader %s not present",
- sc_reader_id);
- goto done;
- }
- ret = sectok_reset(fd, 0, NULL, &sw);
- if (ret <= 0) {
- error("sectok_reset failed: %s", sectok_get_sw(sw));
- goto done;
- }
- if ((cla = cyberflex_inq_class(fd)) < 0) {
- error("cyberflex_inq_class failed");
- goto done;
- }
- memcpy(AUT0, DEFAUT0, sizeof(DEFAUT0));
- if (cyberflex_verify_AUT0(fd, cla, AUT0, sizeof(DEFAUT0)) < 0) {
- if (get_AUT0(AUT0) < 0 ||
- cyberflex_verify_AUT0(fd, cla, AUT0, sizeof(DEFAUT0)) < 0) {
- error("cyberflex_verify_AUT0 failed");
- goto done;
- }
- }
- key_fid[0] = 0x00;
- key_fid[1] = 0x12;
- if (cyberflex_load_rsa_priv(fd, cla, key_fid, 5, 8*len, elements,
- &sw) < 0) {
- error("cyberflex_load_rsa_priv failed: %s", sectok_get_sw(sw));
- goto done;
- }
- if (!sectok_swOK(sw))
- goto done;
- log("cyberflex_load_rsa_priv done");
- key_fid[0] = 0x73;
- key_fid[1] = 0x68;
- if (cyberflex_load_rsa_pub(fd, cla, key_fid, len, elements[5],
- &sw) < 0) {
- error("cyberflex_load_rsa_pub failed: %s", sectok_get_sw(sw));
- goto done;
+ exit(1);
}
- if (!sectok_swOK(sw))
- goto done;
- log("cyberflex_load_rsa_pub done");
- status = 0;
- log("loading key done");
-done:
-
- memset(elements[0], '\0', BN_num_bytes(prv->rsa->q));
- memset(elements[1], '\0', BN_num_bytes(prv->rsa->p));
- memset(elements[2], '\0', BN_num_bytes(prv->rsa->iqmp));
- memset(elements[3], '\0', BN_num_bytes(prv->rsa->dmq1));
- memset(elements[4], '\0', BN_num_bytes(prv->rsa->dmp1));
- memset(elements[5], '\0', BN_num_bytes(prv->rsa->n));
-
- if (prv)
- key_free(prv);
- for (i = 0; i < NUM_RSA_KEY_ELEMENTS; i++)
- if (elements[i])
- xfree(elements[i]);
- if (fd != -1)
- sectok_close(fd);
- exit(status);
+ ret = sc_put_key(prv, sc_reader_id);
+ key_free(prv);
+ if (ret < 0)
+ exit(1);
+ logit("loading key done");
+ exit(0);
}
static void
do_download(struct passwd *pw, const char *sc_reader_id)
{
- Key *pub = NULL;
+ Key **keys = NULL;
+ int i;
- pub = sc_get_key(sc_reader_id);
- if (pub == NULL)
+ keys = sc_get_keys(sc_reader_id, NULL);
+ if (keys == NULL)
fatal("cannot read public key from smartcard");
- key_write(pub, stdout);
- key_free(pub);
- fprintf(stdout, "\n");
+ for (i = 0; keys[i]; i++) {
+ key_write(keys[i], stdout);
+ key_free(keys[i]);
+ fprintf(stdout, "\n");
+ }
+ xfree(keys);
exit(0);
}
#endif /* SMARTCARD */
public = key_load_public(identity_file, &comment);
if (public != NULL) {
fp = key_fingerprint(public, fptype, rep);
- printf("%d %s %s\n", key_size(public), fp, comment);
+ printf("%u %s %s\n", key_size(public), fp, comment);
key_free(public);
xfree(comment);
xfree(fp);
if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
int quoted = 0;
comment = cp;
- for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) {
+ for (; *cp && (quoted || (*cp != ' ' &&
+ *cp != '\t')); cp++) {
if (*cp == '\\' && cp[1] == '"')
cp++; /* Skip both */
else if (*cp == '"')
}
comment = *cp ? cp : comment;
fp = key_fingerprint(public, fptype, rep);
- printf("%d %s %s\n", key_size(public), fp,
+ printf("%u %s %s\n", key_size(public), fp,
comment ? comment : "no comment");
xfree(fp);
key_free(public);
exit(0);
}
+/*
+ * Print the SSHFP RR.
+ */
+static void
+do_print_resource_record(struct passwd *pw, char *hname)
+{
+ Key *public;
+ char *comment = NULL;
+ struct stat st;
+
+ if (!have_identity)
+ ask_filename(pw, "Enter file in which the key is");
+ if (stat(identity_file, &st) < 0) {
+ perror(identity_file);
+ exit(1);
+ }
+ public = key_load_public(identity_file, &comment);
+ if (public != NULL) {
+ export_dns_rr(hname, public, stdout, print_generic);
+ key_free(public);
+ xfree(comment);
+ exit(0);
+ }
+ if (comment)
+ xfree(comment);
+
+ printf("failed to read v2 public key from %s.\n", identity_file);
+ exit(1);
+}
+
/*
* Change the comment of a private key file.
*/
fprintf(stderr, " -c Change comment in private and public key files.\n");
fprintf(stderr, " -e Convert OpenSSH to IETF SECSH key file.\n");
fprintf(stderr, " -f filename Filename of the key file.\n");
+ fprintf(stderr, " -g Use generic DNS resource record format.\n");
fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n");
fprintf(stderr, " -l Show fingerprint of key file.\n");
fprintf(stderr, " -p Change passphrase of private key file.\n");
fprintf(stderr, " -C comment Provide new comment.\n");
fprintf(stderr, " -N phrase Provide new passphrase.\n");
fprintf(stderr, " -P phrase Provide old passphrase.\n");
+ fprintf(stderr, " -r hostname Print DNS resource record.\n");
#ifdef SMARTCARD
fprintf(stderr, " -D reader Download public key from smartcard.\n");
fprintf(stderr, " -U reader Upload private key to smartcard.\n");
#endif /* SMARTCARD */
+ fprintf(stderr, " -G file Generate candidates for DH-GEX moduli\n");
+ fprintf(stderr, " -T file Screen candidates for DH-GEX moduli\n");
+
exit(1);
}
main(int ac, char **av)
{
char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
- char *reader_id = NULL;
+ char out_file[MAXPATHLEN], *reader_id = NULL;
+ char *resource_record_hostname = NULL;
Key *private, *public;
struct passwd *pw;
struct stat st;
- int opt, type, fd, download = 0;
+ int opt, type, fd, download = 0, memory = 0;
+ int generator_wanted = 0, trials = 100;
+ int do_gen_candidates = 0, do_screen_candidates = 0;
+ int log_level = SYSLOG_LEVEL_INFO;
+ BIGNUM *start = NULL;
FILE *f;
extern int optind;
extern char *optarg;
- __progname = get_progname(av[0]);
+ __progname = ssh_get_progname(av[0]);
SSLeay_add_all_algorithms();
+ log_init(av[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
+
+ init_rng();
+ seed_rng();
/* we need this for the home * directory. */
pw = getpwuid(getuid());
exit(1);
}
- while ((opt = getopt(ac, av, "deiqpclBRxXyb:f:t:U:D:P:N:C:")) != -1) {
+ while ((opt = getopt(ac, av,
+ "degiqpclBRvxXyb:f:t:U:D:P:N:C:r:g:T:G:M:S:a:W:")) != -1) {
switch (opt) {
case 'b':
bits = atoi(optarg);
strlcpy(identity_file, optarg, sizeof(identity_file));
have_identity = 1;
break;
+ case 'g':
+ print_generic = 1;
+ break;
case 'P':
identity_passphrase = optarg;
break;
case 'U':
reader_id = optarg;
break;
+ case 'v':
+ if (log_level == SYSLOG_LEVEL_INFO)
+ log_level = SYSLOG_LEVEL_DEBUG1;
+ else {
+ if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
+ log_level < SYSLOG_LEVEL_DEBUG3)
+ log_level++;
+ }
+ break;
+ case 'r':
+ resource_record_hostname = optarg;
+ break;
+ case 'W':
+ generator_wanted = atoi(optarg);
+ if (generator_wanted < 1)
+ fatal("Desired generator has bad value.");
+ break;
+ case 'a':
+ trials = atoi(optarg);
+ break;
+ case 'M':
+ memory = atoi(optarg);
+ break;
+ case 'G':
+ do_gen_candidates = 1;
+ strlcpy(out_file, optarg, sizeof(out_file));
+ break;
+ case 'T':
+ do_screen_candidates = 1;
+ strlcpy(out_file, optarg, sizeof(out_file));
+ break;
+ case 'S':
+ /* XXX - also compare length against bits */
+ if (BN_hex2bn(&start, optarg) == 0)
+ fatal("Invalid start point.");
+ break;
case '?':
default:
usage();
}
}
+
+ /* reinit */
+ log_init(av[0], log_level, SYSLOG_FACILITY_USER, 1);
+
if (optind < ac) {
printf("Too many arguments.\n");
usage();
do_convert_from_ssh2(pw);
if (print_public)
do_print_public(pw);
+ if (resource_record_hostname != NULL) {
+ do_print_resource_record(pw, resource_record_hostname);
+ }
if (reader_id != NULL) {
#ifdef SMARTCARD
if (download)
#endif /* SMARTCARD */
}
- init_rng();
- seed_rng();
+ if (do_gen_candidates) {
+ FILE *out = fopen(out_file, "w");
+
+ if (out == NULL) {
+ error("Couldn't open modulus candidate file \"%s\": %s",
+ out_file, strerror(errno));
+ return (1);
+ }
+ if (gen_candidates(out, memory, bits, start) != 0)
+ fatal("modulus candidate generation failed\n");
+
+ return (0);
+ }
+
+ if (do_screen_candidates) {
+ FILE *in;
+ FILE *out = fopen(out_file, "w");
+
+ if (have_identity && strcmp(identity_file, "-") != 0) {
+ if ((in = fopen(identity_file, "r")) == NULL) {
+ fatal("Couldn't open modulus candidate "
+ "file \"%s\": %s", identity_file,
+ strerror(errno));
+ }
+ } else
+ in = stdin;
+
+ if (out == NULL) {
+ fatal("Couldn't open moduli file \"%s\": %s",
+ out_file, strerror(errno));
+ }
+ if (prime_test(in, out, trials, generator_wanted) != 0)
+ fatal("modulus screening failed\n");
+ return (0);
+ }
+
arc4random_stir();
if (key_type_name == NULL) {
andersk / openssh.git / blobdiff