version 1.82.2.4, 2002/06/22 07:23:18 |
version 1.115, 2004/05/09 00:06:47 |
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#include "bufaux.h" |
#include "bufaux.h" |
#include "pathnames.h" |
#include "pathnames.h" |
#include "log.h" |
#include "log.h" |
#include "readpass.h" |
#include "misc.h" |
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#ifdef SMARTCARD |
#ifdef SMARTCARD |
#include "scard.h" |
#include "scard.h" |
#endif |
#endif |
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#include "dns.h" |
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/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ |
/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ |
int bits = 1024; |
int bits = 1024; |
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int convert_to_ssh2 = 0; |
int convert_to_ssh2 = 0; |
int convert_from_ssh2 = 0; |
int convert_from_ssh2 = 0; |
int print_public = 0; |
int print_public = 0; |
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int print_generic = 0; |
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char *key_type_name = NULL; |
char *key_type_name = NULL; |
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char hostname[MAXHOSTNAMELEN]; |
char hostname[MAXHOSTNAMELEN]; |
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/* moduli.c */ |
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int gen_candidates(FILE *, int, int, BIGNUM *); |
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int prime_test(FILE *, FILE *, u_int32_t, u_int32_t); |
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static void |
static void |
ask_filename(struct passwd *pw, const char *prompt) |
ask_filename(struct passwd *pw, const char *prompt) |
{ |
{ |
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snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); |
snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); |
fprintf(stderr, "%s (%s): ", prompt, identity_file); |
fprintf(stderr, "%s (%s): ", prompt, identity_file); |
fflush(stderr); |
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if (fgets(buf, sizeof(buf), stdin) == NULL) |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
exit(1); |
exit(1); |
if (strchr(buf, '\n')) |
if (strchr(buf, '\n')) |
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exit(1); |
exit(1); |
} |
} |
} |
} |
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if (k->type == KEY_RSA1) { |
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fprintf(stderr, "version 1 keys are not supported\n"); |
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exit(1); |
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} |
if (key_to_blob(k, &blob, &len) <= 0) { |
if (key_to_blob(k, &blob, &len) <= 0) { |
fprintf(stderr, "key_to_blob failed\n"); |
fprintf(stderr, "key_to_blob failed\n"); |
exit(1); |
exit(1); |
} |
} |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); |
fprintf(stdout, |
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), |
key_size(k), key_type(k), |
pw->pw_name, hostname); |
pw->pw_name, hostname); |
dump_base64(stdout, blob, len); |
dump_base64(stdout, blob, len); |
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static void |
static void |
buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
{ |
{ |
int bits = buffer_get_int(b); |
u_int bits = buffer_get_int(b); |
int bytes = (bits + 7) / 8; |
u_int bytes = (bits + 7) / 8; |
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if (buffer_len(b) < bytes) |
if (buffer_len(b) < bytes) |
fatal("buffer_get_bignum_bits: input buffer too small: " |
fatal("buffer_get_bignum_bits: input buffer too small: " |
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key_free(prv); |
key_free(prv); |
if (ret < 0) |
if (ret < 0) |
exit(1); |
exit(1); |
log("loading key done"); |
logit("loading key done"); |
exit(0); |
exit(0); |
} |
} |
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public = key_load_public(identity_file, &comment); |
public = key_load_public(identity_file, &comment); |
if (public != NULL) { |
if (public != NULL) { |
fp = key_fingerprint(public, fptype, rep); |
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); |
key_free(public); |
xfree(comment); |
xfree(comment); |
xfree(fp); |
xfree(fp); |
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if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) { |
if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) { |
int quoted = 0; |
int quoted = 0; |
comment = cp; |
comment = cp; |
for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) { |
for (; *cp && (quoted || (*cp != ' ' && |
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*cp != '\t')); cp++) { |
if (*cp == '\\' && cp[1] == '"') |
if (*cp == '\\' && cp[1] == '"') |
cp++; /* Skip both */ |
cp++; /* Skip both */ |
else if (*cp == '"') |
else if (*cp == '"') |
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} |
} |
comment = *cp ? cp : comment; |
comment = *cp ? cp : comment; |
fp = key_fingerprint(public, fptype, rep); |
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"); |
comment ? comment : "no comment"); |
xfree(fp); |
xfree(fp); |
key_free(public); |
key_free(public); |
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} |
} |
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/* |
/* |
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* Print the SSHFP RR. |
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*/ |
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static void |
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do_print_resource_record(struct passwd *pw, char *hostname) |
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{ |
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Key *public; |
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char *comment = NULL; |
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struct stat st; |
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if (!have_identity) |
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ask_filename(pw, "Enter file in which the key is"); |
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if (stat(identity_file, &st) < 0) { |
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perror(identity_file); |
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exit(1); |
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} |
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public = key_load_public(identity_file, &comment); |
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if (public != NULL) { |
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export_dns_rr(hostname, public, stdout, print_generic); |
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key_free(public); |
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xfree(comment); |
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exit(0); |
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} |
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if (comment) |
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xfree(comment); |
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printf("failed to read v2 public key from %s.\n", identity_file); |
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exit(1); |
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} |
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/* |
* Change the comment of a private key file. |
* Change the comment of a private key file. |
*/ |
*/ |
static void |
static void |
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fprintf(stderr, " -c Change comment in private and public key files.\n"); |
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, " -e Convert OpenSSH to IETF SECSH key file.\n"); |
fprintf(stderr, " -f filename Filename of the key file.\n"); |
fprintf(stderr, " -f filename Filename of the key file.\n"); |
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fprintf(stderr, " -g Use generic DNS resource record format.\n"); |
fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n"); |
fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n"); |
fprintf(stderr, " -l Show fingerprint of key file.\n"); |
fprintf(stderr, " -l Show fingerprint of key file.\n"); |
fprintf(stderr, " -p Change passphrase of private key file.\n"); |
fprintf(stderr, " -p Change passphrase of private key file.\n"); |
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fprintf(stderr, " -C comment Provide new comment.\n"); |
fprintf(stderr, " -C comment Provide new comment.\n"); |
fprintf(stderr, " -N phrase Provide new passphrase.\n"); |
fprintf(stderr, " -N phrase Provide new passphrase.\n"); |
fprintf(stderr, " -P phrase Provide old passphrase.\n"); |
fprintf(stderr, " -P phrase Provide old passphrase.\n"); |
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fprintf(stderr, " -r hostname Print DNS resource record.\n"); |
#ifdef SMARTCARD |
#ifdef SMARTCARD |
fprintf(stderr, " -D reader Download public key from smartcard.\n"); |
fprintf(stderr, " -D reader Download public key from smartcard.\n"); |
fprintf(stderr, " -U reader Upload private key to smartcard.\n"); |
fprintf(stderr, " -U reader Upload private key to smartcard.\n"); |
#endif /* SMARTCARD */ |
#endif /* SMARTCARD */ |
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fprintf(stderr, " -G file Generate candidates for DH-GEX moduli\n"); |
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fprintf(stderr, " -T file Screen candidates for DH-GEX moduli\n"); |
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exit(1); |
exit(1); |
} |
} |
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main(int ac, char **av) |
main(int ac, char **av) |
{ |
{ |
char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2; |
char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2; |
char *reader_id = NULL; |
char out_file[MAXPATHLEN], *reader_id = NULL; |
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char *resource_record_hostname = NULL; |
Key *private, *public; |
Key *private, *public; |
struct passwd *pw; |
struct passwd *pw; |
struct stat st; |
struct stat st; |
int opt, type, fd, download = 0; |
int opt, type, fd, download = 0, memory = 0; |
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int generator_wanted = 0, trials = 100; |
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int do_gen_candidates = 0, do_screen_candidates = 0; |
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int log_level = SYSLOG_LEVEL_INFO; |
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BIGNUM *start = NULL; |
FILE *f; |
FILE *f; |
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extern int optind; |
extern int optind; |
extern char *optarg; |
extern char *optarg; |
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SSLeay_add_all_algorithms(); |
SSLeay_add_all_algorithms(); |
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log_init(av[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1); |
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/* we need this for the home * directory. */ |
/* we need this for the home * directory. */ |
pw = getpwuid(getuid()); |
pw = getpwuid(getuid()); |
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exit(1); |
exit(1); |
} |
} |
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while ((opt = getopt(ac, av, "deiqpclBRxXyb:f:t:U:D:P:N:C:")) != -1) { |
while ((opt = getopt(ac, av, |
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"degiqpclBRvxXyb:f:t:U:D:P:N:C:r:g:T:G:M:S:a:W:")) != -1) { |
switch (opt) { |
switch (opt) { |
case 'b': |
case 'b': |
bits = atoi(optarg); |
bits = atoi(optarg); |
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strlcpy(identity_file, optarg, sizeof(identity_file)); |
strlcpy(identity_file, optarg, sizeof(identity_file)); |
have_identity = 1; |
have_identity = 1; |
break; |
break; |
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case 'g': |
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print_generic = 1; |
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break; |
case 'P': |
case 'P': |
identity_passphrase = optarg; |
identity_passphrase = optarg; |
break; |
break; |
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case 'U': |
case 'U': |
reader_id = optarg; |
reader_id = optarg; |
break; |
break; |
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case 'v': |
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if (log_level == SYSLOG_LEVEL_INFO) |
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log_level = SYSLOG_LEVEL_DEBUG1; |
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else { |
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if (log_level >= SYSLOG_LEVEL_DEBUG1 && |
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log_level < SYSLOG_LEVEL_DEBUG3) |
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log_level++; |
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} |
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break; |
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case 'r': |
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resource_record_hostname = optarg; |
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break; |
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case 'W': |
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generator_wanted = atoi(optarg); |
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if (generator_wanted < 1) |
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fatal("Desired generator has bad value."); |
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break; |
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case 'a': |
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trials = atoi(optarg); |
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break; |
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case 'M': |
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memory = atoi(optarg); |
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break; |
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case 'G': |
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do_gen_candidates = 1; |
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strlcpy(out_file, optarg, sizeof(out_file)); |
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break; |
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case 'T': |
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do_screen_candidates = 1; |
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strlcpy(out_file, optarg, sizeof(out_file)); |
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break; |
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case 'S': |
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/* XXX - also compare length against bits */ |
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if (BN_hex2bn(&start, optarg) == 0) |
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fatal("Invalid start point."); |
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break; |
case '?': |
case '?': |
default: |
default: |
usage(); |
usage(); |
} |
} |
} |
} |
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/* reinit */ |
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log_init(av[0], log_level, SYSLOG_FACILITY_USER, 1); |
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if (optind < ac) { |
if (optind < ac) { |
printf("Too many arguments.\n"); |
printf("Too many arguments.\n"); |
usage(); |
usage(); |
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do_convert_from_ssh2(pw); |
do_convert_from_ssh2(pw); |
if (print_public) |
if (print_public) |
do_print_public(pw); |
do_print_public(pw); |
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if (resource_record_hostname != NULL) { |
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do_print_resource_record(pw, resource_record_hostname); |
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} |
if (reader_id != NULL) { |
if (reader_id != NULL) { |
#ifdef SMARTCARD |
#ifdef SMARTCARD |
if (download) |
if (download) |
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#else /* SMARTCARD */ |
#else /* SMARTCARD */ |
fatal("no support for smartcards."); |
fatal("no support for smartcards."); |
#endif /* SMARTCARD */ |
#endif /* SMARTCARD */ |
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} |
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if (do_gen_candidates) { |
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FILE *out = fopen(out_file, "w"); |
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if (out == NULL) { |
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error("Couldn't open modulus candidate file \"%s\": %s", |
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out_file, strerror(errno)); |
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return (1); |
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} |
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if (gen_candidates(out, memory, bits, start) != 0) |
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fatal("modulus candidate generation failed\n"); |
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return (0); |
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} |
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if (do_screen_candidates) { |
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FILE *in; |
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FILE *out = fopen(out_file, "w"); |
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if (have_identity && strcmp(identity_file, "-") != 0) { |
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if ((in = fopen(identity_file, "r")) == NULL) { |
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fatal("Couldn't open modulus candidate " |
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"file \"%s\": %s", identity_file, |
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strerror(errno)); |
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} |
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} else |
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in = stdin; |
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if (out == NULL) { |
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fatal("Couldn't open moduli file \"%s\": %s", |
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out_file, strerror(errno)); |
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} |
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if (prime_test(in, out, trials, generator_wanted) != 0) |
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fatal("modulus screening failed\n"); |
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return (0); |
} |
} |
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arc4random_stir(); |
arc4random_stir(); |