-/* $OpenBSD: ssh-keygen.c,v 1.144 2006/05/17 12:43:34 markus Exp $ */
+/* $OpenBSD: ssh-keygen.c,v 1.176 2010/01/11 10:51:07 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
#include "includes.h"
#include <sys/types.h>
+#include <sys/socket.h>
#include <sys/stat.h>
+#include <sys/param.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
+#include "openbsd-compat/openssl-compat.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <netdb.h>
+#ifdef HAVE_PATHS_H
+# include <paths.h>
+#endif
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
#include "xmalloc.h"
#include "key.h"
#include "authfile.h"
#include "uuencode.h"
#include "buffer.h"
-#include "bufaux.h"
#include "pathnames.h"
#include "log.h"
#include "misc.h"
#include "match.h"
#include "hostfile.h"
+#include "dns.h"
#ifdef SMARTCARD
#include "scard.h"
#endif
-#include "dns.h"
/* Number of bits in the RSA/DSA key. This value can be set on the command line. */
#define DEFAULT_BITS 2048
int quiet = 0;
+int log_level = SYSLOG_LEVEL_INFO;
+
/* Flag indicating that we want to hash a known_hosts file */
int hash_hosts = 0;
/* Flag indicating that we want lookup a host in known_hosts file */
name = _PATH_SSH_CLIENT_ID_RSA;
break;
default:
- fprintf(stderr, "bad key type");
+ fprintf(stderr, "bad key type\n");
exit(1);
break;
}
fprintf(stderr, "%s (%s): ", prompt, identity_file);
if (fgets(buf, sizeof(buf), stdin) == NULL)
exit(1);
- if (strchr(buf, '\n'))
- *strchr(buf, '\n') = 0;
+ buf[strcspn(buf, "\n")] = '\0';
if (strcmp(buf, "") != 0)
strlcpy(identity_file, buf, sizeof(identity_file));
have_identity = 1;
Key *k;
u_int len;
u_char *blob;
+ char comment[61];
struct stat st;
if (!have_identity)
fprintf(stderr, "key_to_blob failed\n");
exit(1);
}
- fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
- fprintf(stdout,
- "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n",
+ /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
+ snprintf(comment, sizeof(comment),
+ "%u-bit %s, converted by %s@%s from OpenSSH",
key_size(k), key_type(k),
pw->pw_name, hostname);
+
+ fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
+ fprintf(stdout, "Comment: \"%s\"\n", comment);
dump_base64(stdout, blob, len);
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
key_free(k);
if (buffer_len(b) < bytes)
fatal("buffer_get_bignum_bits: input buffer too small: "
"need %d have %d", bytes, buffer_len(b));
- BN_bin2bn(buffer_ptr(b), bytes, value);
+ if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL)
+ fatal("buffer_get_bignum_bits: BN_bin2bn failed");
buffer_consume(b, bytes);
}
buffer_init(&b);
buffer_append(&b, blob, blen);
- magic = buffer_get_int(&b);
+ magic = buffer_get_int(&b);
if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC);
buffer_free(&b);
i2 = buffer_get_int(&b);
i3 = buffer_get_int(&b);
i4 = buffer_get_int(&b);
- debug("ignore (%d %d %d %d)", i1,i2,i3,i4);
+ debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
if (strcmp(cipher, "none") != 0) {
error("unsupported cipher %s", cipher);
xfree(cipher);
buffer_get_bignum_bits(&b, key->dsa->priv_key);
break;
case KEY_RSA:
- e = buffer_get_char(&b);
+ e = buffer_get_char(&b);
debug("e %lx", e);
if (e < 30) {
e <<= 8;
line[pos++] = c;
line[pos] = '\0';
}
- if (c == EOF)
- return -1;
- return pos;
+ /* We reached EOF */
+ return -1;
}
static void
PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) :
key_write(k, stdout);
if (!ok) {
- fprintf(stderr, "key write failed");
+ fprintf(stderr, "key write failed\n");
exit(1);
}
key_free(k);
{
FILE *f;
Key *public;
- char *comment = NULL, *cp, *ep, line[16*1024], *fp;
- int i, skip = 0, num = 1, invalid = 1;
+ char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra;
+ int i, skip = 0, num = 0, invalid = 1;
enum fp_rep rep;
enum fp_type fptype;
struct stat st;
public = key_load_public(identity_file, &comment);
if (public != NULL) {
fp = key_fingerprint(public, fptype, rep);
- printf("%u %s %s\n", key_size(public), fp, comment);
+ ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
+ printf("%u %s %s (%s)\n", key_size(public), fp, comment,
+ key_type(public));
+ if (log_level >= SYSLOG_LEVEL_VERBOSE)
+ printf("%s\n", ra);
key_free(public);
xfree(comment);
+ xfree(ra);
xfree(fp);
exit(0);
}
f = fopen(identity_file, "r");
if (f != NULL) {
while (fgets(line, sizeof(line), f)) {
- i = strlen(line) - 1;
- if (line[i] != '\n') {
- error("line %d too long: %.40s...", num, line);
+ if ((cp = strchr(line, '\n')) == NULL) {
+ error("line %d too long: %.40s...",
+ num + 1, line);
skip = 1;
continue;
}
skip = 0;
continue;
}
- line[i] = '\0';
+ *cp = '\0';
/* Skip leading whitespace, empty and comment lines. */
for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
;
if (!*cp || *cp == '\n' || *cp == '#')
- continue ;
+ continue;
i = strtol(cp, &ep, 10);
if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
int quoted = 0;
}
comment = *cp ? cp : comment;
fp = key_fingerprint(public, fptype, rep);
- printf("%u %s %s\n", key_size(public), fp,
- comment ? comment : "no comment");
+ ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
+ printf("%u %s %s (%s)\n", key_size(public), fp,
+ comment ? comment : "no comment", key_type(public));
+ if (log_level >= SYSLOG_LEVEL_VERBOSE)
+ printf("%s\n", ra);
+ xfree(ra);
xfree(fp);
key_free(public);
invalid = 0;
}
static void
-print_host(FILE *f, char *name, Key *public, int hash)
+print_host(FILE *f, const char *name, Key *public, int hash)
{
- if (hash && (name = host_hash(name, NULL, 0)) == NULL)
- fatal("hash_host failed");
- fprintf(f, "%s ", name);
- if (!key_write(public, f))
- fatal("key_write failed");
- fprintf(f, "\n");
+ if (print_fingerprint) {
+ enum fp_rep rep;
+ enum fp_type fptype;
+ char *fp, *ra;
+
+ fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
+ rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
+ fp = key_fingerprint(public, fptype, rep);
+ ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
+ printf("%u %s %s (%s)\n", key_size(public), fp, name,
+ key_type(public));
+ if (log_level >= SYSLOG_LEVEL_VERBOSE)
+ printf("%s\n", ra);
+ xfree(ra);
+ xfree(fp);
+ } else {
+ if (hash && (name = host_hash(name, NULL, 0)) == NULL)
+ fatal("hash_host failed");
+ fprintf(f, "%s ", name);
+ if (!key_write(public, f))
+ fatal("key_write failed");
+ fprintf(f, "\n");
+ }
}
static void
Key *public;
char *cp, *cp2, *kp, *kp2;
char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN];
- int c, i, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0;
+ int c, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0;
if (!have_identity) {
cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
}
while (fgets(line, sizeof(line), in)) {
- num++;
- i = strlen(line) - 1;
- if (line[i] != '\n') {
- error("line %d too long: %.40s...", num, line);
+ if ((cp = strchr(line, '\n')) == NULL) {
+ error("line %d too long: %.40s...", num + 1, line);
skip = 1;
invalid = 1;
continue;
}
+ num++;
if (skip) {
skip = 0;
continue;
}
- line[i] = '\0';
+ *cp = '\0';
/* Skip leading whitespace, empty and comment lines. */
for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
printf("# Host %s found: "
"line %d type %s\n", name,
num, key_type(public));
- print_host(out, cp, public, hash_hosts);
+ print_host(out, name, public,
+ hash_hosts);
}
if (delete_host && !c)
print_host(out, cp, public, 0);
fclose(in);
if (invalid) {
- fprintf(stderr, "%s is not a valid known_host file.\n",
+ fprintf(stderr, "%s is not a valid known_hosts file.\n",
identity_file);
if (inplace) {
fprintf(stderr, "Not replacing existing known_hosts "
key_free(private);
exit(1);
}
- if (strchr(new_comment, '\n'))
- *strchr(new_comment, '\n') = 0;
+ new_comment[strcspn(new_comment, "\n")] = '\0';
}
/* Save the file using the new passphrase. */
}
f = fdopen(fd, "w");
if (f == NULL) {
- printf("fdopen %s failed", identity_file);
+ printf("fdopen %s failed\n", identity_file);
exit(1);
}
if (!key_write(public, f))
- fprintf(stderr, "write key failed");
+ fprintf(stderr, "write key failed\n");
key_free(public);
fprintf(f, " %s\n", new_comment);
fclose(f);
static void
usage(void)
{
- fprintf(stderr, "Usage: %s [options]\n", __progname);
+ fprintf(stderr, "usage: %s [options]\n", __progname);
fprintf(stderr, "Options:\n");
fprintf(stderr, " -a trials Number of trials for screening DH-GEX moduli.\n");
fprintf(stderr, " -B Show bubblebabble digest of key file.\n");
#ifdef SMARTCARD
fprintf(stderr, " -D reader Download public key from smartcard.\n");
#endif /* SMARTCARD */
- fprintf(stderr, " -e Convert OpenSSH to IETF SECSH key file.\n");
+ fprintf(stderr, " -e Convert OpenSSH to RFC 4716 key file.\n");
fprintf(stderr, " -F hostname Find hostname in known hosts file.\n");
fprintf(stderr, " -f filename Filename of the key file.\n");
fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n");
fprintf(stderr, " -g Use generic DNS resource record format.\n");
fprintf(stderr, " -H Hash names in known_hosts file.\n");
- fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n");
+ fprintf(stderr, " -i Convert RFC 4716 to OpenSSH key file.\n");
fprintf(stderr, " -l Show fingerprint of key file.\n");
fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n");
fprintf(stderr, " -N phrase Provide new passphrase.\n");
* Main program for key management.
*/
int
-main(int ac, char **av)
+main(int argc, char **argv)
{
char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
char out_file[MAXPATHLEN], *reader_id = NULL;
int opt, type, fd, download = 0;
u_int32_t memory = 0, 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;
const char *errstr;
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
sanitise_stdfd();
- __progname = ssh_get_progname(av[0]);
+ __progname = ssh_get_progname(argv[0]);
SSLeay_add_all_algorithms();
- log_init(av[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
+ log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
init_rng();
seed_rng();
exit(1);
}
- while ((opt = getopt(ac, av,
+ while ((opt = getopt(argc, argv,
"degiqpclBHvxXyF:b:f:t:U:D:P:N:C:r:g:R:T:G:M:S:a:W:")) != -1) {
switch (opt) {
case 'b':
}
/* reinit */
- log_init(av[0], log_level, SYSLOG_FACILITY_USER, 1);
+ log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
- if (optind < ac) {
+ if (optind < argc) {
printf("Too many arguments.\n");
usage();
}
printf("Can only have one of -p and -c.\n");
usage();
}
+ if (print_fingerprint && (delete_host || hash_hosts)) {
+ printf("Cannot use -l with -D or -R.\n");
+ usage();
+ }
if (delete_host || hash_hosts || find_host)
do_known_hosts(pw, rr_hostname);
if (print_fingerprint || print_bubblebabble)
printf("Generating public/private %s key pair.\n", key_type_name);
private = key_generate(type, bits);
if (private == NULL) {
- fprintf(stderr, "key_generate failed");
+ fprintf(stderr, "key_generate failed\n");
exit(1);
}
public = key_from_private(private);
if (identity_comment) {
strlcpy(comment, identity_comment, sizeof(comment));
} else {
- /* Create default commend field for the passphrase. */
+ /* Create default comment field for the passphrase. */
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
}
}
f = fdopen(fd, "w");
if (f == NULL) {
- printf("fdopen %s failed", identity_file);
+ printf("fdopen %s failed\n", identity_file);
exit(1);
}
if (!key_write(public, f))
- fprintf(stderr, "write key failed");
+ fprintf(stderr, "write key failed\n");
fprintf(f, " %s\n", comment);
fclose(f);
if (!quiet) {
char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX);
+ char *ra = key_fingerprint(public, SSH_FP_MD5,
+ SSH_FP_RANDOMART);
printf("Your public key has been saved in %s.\n",
identity_file);
printf("The key fingerprint is:\n");
printf("%s %s\n", fp, comment);
+ printf("The key's randomart image is:\n");
+ printf("%s\n", ra);
+ xfree(ra);
xfree(fp);
}
andersk / openssh.git / blobdiff