version 1.24, 2000/05/03 02:52:56 |
version 1.82.2.4, 2002/06/22 07:23:18 |
|
|
* Author: Tatu Ylonen <ylo@cs.hut.fi> |
* Author: Tatu Ylonen <ylo@cs.hut.fi> |
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
* All rights reserved |
* All rights reserved |
* Created: Mon Mar 27 02:26:40 1995 ylo |
|
* Identity and host key generation and maintenance. |
* Identity and host key generation and maintenance. |
|
* |
|
* As far as I am concerned, the code I have written for this software |
|
* can be used freely for any purpose. Any derived versions of this |
|
* software must be clearly marked as such, and if the derived work is |
|
* incompatible with the protocol description in the RFC file, it must be |
|
* called by a name other than "ssh" or "Secure Shell". |
*/ |
*/ |
|
|
#include "includes.h" |
#include "includes.h" |
RCSID("$Id$"); |
RCSID("$OpenBSD$"); |
|
|
#include <openssl/evp.h> |
#include <openssl/evp.h> |
#include <openssl/pem.h> |
#include <openssl/pem.h> |
#include <openssl/rsa.h> |
|
#include <openssl/dsa.h> |
|
|
|
#include "ssh.h" |
|
#include "xmalloc.h" |
#include "xmalloc.h" |
#include "fingerprint.h" |
|
#include "key.h" |
#include "key.h" |
#include "rsa.h" |
#include "rsa.h" |
#include "dsa.h" |
|
#include "authfile.h" |
#include "authfile.h" |
#include "uuencode.h" |
#include "uuencode.h" |
|
#include "buffer.h" |
|
#include "bufaux.h" |
|
#include "pathnames.h" |
|
#include "log.h" |
|
#include "readpass.h" |
|
|
|
#ifdef SMARTCARD |
|
#include "scard.h" |
|
#endif |
|
|
/* 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; |
|
|
|
|
|
|
/* Flag indicating that we just want to see the key fingerprint */ |
/* Flag indicating that we just want to see the key fingerprint */ |
int print_fingerprint = 0; |
int print_fingerprint = 0; |
|
int print_bubblebabble = 0; |
|
|
/* The identity file name, given on the command line or entered by the user. */ |
/* The identity file name, given on the command line or entered by the user. */ |
char identity_file[1024]; |
char identity_file[1024]; |
|
|
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; |
int dsa_mode = 0; |
|
|
|
|
char *key_type_name = NULL; |
|
|
/* argv0 */ |
/* argv0 */ |
extern char *__progname; |
extern char *__progname; |
|
|
char hostname[MAXHOSTNAMELEN]; |
char hostname[MAXHOSTNAMELEN]; |
|
|
void |
static void |
ask_filename(struct passwd *pw, const char *prompt) |
ask_filename(struct passwd *pw, const char *prompt) |
{ |
{ |
char buf[1024]; |
char buf[1024]; |
snprintf(identity_file, sizeof(identity_file), "%s/%s", |
char *name = NULL; |
pw->pw_dir, |
|
dsa_mode ? SSH_CLIENT_ID_DSA: SSH_CLIENT_IDENTITY); |
if (key_type_name == NULL) |
printf("%s (%s): ", prompt, identity_file); |
name = _PATH_SSH_CLIENT_ID_RSA; |
fflush(stdout); |
else |
|
switch (key_type_from_name(key_type_name)) { |
|
case KEY_RSA1: |
|
name = _PATH_SSH_CLIENT_IDENTITY; |
|
break; |
|
case KEY_DSA: |
|
name = _PATH_SSH_CLIENT_ID_DSA; |
|
break; |
|
case KEY_RSA: |
|
name = _PATH_SSH_CLIENT_ID_RSA; |
|
break; |
|
default: |
|
fprintf(stderr, "bad key type"); |
|
exit(1); |
|
break; |
|
} |
|
|
|
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) |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
exit(1); |
exit(1); |
if (strchr(buf, '\n')) |
if (strchr(buf, '\n')) |
|
|
have_identity = 1; |
have_identity = 1; |
} |
} |
|
|
int |
static Key * |
try_load_key(char *filename, Key *k) |
load_identity(char *filename) |
{ |
{ |
int success = 1; |
char *pass; |
if (!load_private_key(filename, "", k, NULL)) { |
Key *prv; |
char *pass = read_passphrase("Enter passphrase: ", 1); |
|
if (!load_private_key(filename, pass, k, NULL)) { |
prv = key_load_private(filename, "", NULL); |
success = 0; |
if (prv == NULL) { |
} |
if (identity_passphrase) |
|
pass = xstrdup(identity_passphrase); |
|
else |
|
pass = read_passphrase("Enter passphrase: ", |
|
RP_ALLOW_STDIN); |
|
prv = key_load_private(filename, pass, NULL); |
memset(pass, 0, strlen(pass)); |
memset(pass, 0, strlen(pass)); |
xfree(pass); |
xfree(pass); |
} |
} |
return success; |
return prv; |
} |
} |
|
|
#define SSH_COM_MAGIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" |
#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" |
#define SSH_COM_MAGIC_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 |
|
|
void |
static void |
do_convert_to_ssh2(struct passwd *pw) |
do_convert_to_ssh2(struct passwd *pw) |
{ |
{ |
Key *k; |
Key *k; |
int len; |
u_int len; |
unsigned char *blob; |
u_char *blob; |
struct stat st; |
struct stat st; |
|
|
if (!have_identity) |
if (!have_identity) |
|
|
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
k = key_new(KEY_DSA); |
if ((k = key_load_public(identity_file, NULL)) == NULL) { |
if (!try_load_key(identity_file, k)) { |
if ((k = load_identity(identity_file)) == NULL) { |
fprintf(stderr, "load failed\n"); |
fprintf(stderr, "load failed\n"); |
|
exit(1); |
|
} |
|
} |
|
if (key_to_blob(k, &blob, &len) <= 0) { |
|
fprintf(stderr, "key_to_blob failed\n"); |
exit(1); |
exit(1); |
} |
} |
dsa_make_key_blob(k, &blob, &len); |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); |
fprintf(stdout, SSH_COM_MAGIC_BEGIN "\n"); |
|
fprintf(stdout, |
fprintf(stdout, |
"Comment: \"%d-bit DSA, converted from openssh by %s@%s\"\n", |
"Comment: \"%d-bit %s, converted from OpenSSH by %s@%s\"\n", |
BN_num_bits(k->dsa->p), |
key_size(k), key_type(k), |
pw->pw_name, hostname); |
pw->pw_name, hostname); |
dump_base64(stdout, blob, len); |
dump_base64(stdout, blob, len); |
fprintf(stdout, SSH_COM_MAGIC_END "\n"); |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); |
key_free(k); |
key_free(k); |
xfree(blob); |
xfree(blob); |
exit(0); |
exit(0); |
} |
} |
|
|
void |
static void |
|
buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
|
{ |
|
int bits = buffer_get_int(b); |
|
int bytes = (bits + 7) / 8; |
|
|
|
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); |
|
buffer_consume(b, bytes); |
|
} |
|
|
|
static Key * |
|
do_convert_private_ssh2_from_blob(u_char *blob, u_int blen) |
|
{ |
|
Buffer b; |
|
Key *key = NULL; |
|
char *type, *cipher; |
|
u_char *sig, data[] = "abcde12345"; |
|
int magic, rlen, ktype, i1, i2, i3, i4; |
|
u_int slen; |
|
u_long e; |
|
|
|
buffer_init(&b); |
|
buffer_append(&b, blob, blen); |
|
|
|
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); |
|
return NULL; |
|
} |
|
i1 = buffer_get_int(&b); |
|
type = buffer_get_string(&b, NULL); |
|
cipher = buffer_get_string(&b, NULL); |
|
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); |
|
if (strcmp(cipher, "none") != 0) { |
|
error("unsupported cipher %s", cipher); |
|
xfree(cipher); |
|
buffer_free(&b); |
|
xfree(type); |
|
return NULL; |
|
} |
|
xfree(cipher); |
|
|
|
if (strstr(type, "dsa")) { |
|
ktype = KEY_DSA; |
|
} else if (strstr(type, "rsa")) { |
|
ktype = KEY_RSA; |
|
} else { |
|
xfree(type); |
|
return NULL; |
|
} |
|
key = key_new_private(ktype); |
|
xfree(type); |
|
|
|
switch (key->type) { |
|
case KEY_DSA: |
|
buffer_get_bignum_bits(&b, key->dsa->p); |
|
buffer_get_bignum_bits(&b, key->dsa->g); |
|
buffer_get_bignum_bits(&b, key->dsa->q); |
|
buffer_get_bignum_bits(&b, key->dsa->pub_key); |
|
buffer_get_bignum_bits(&b, key->dsa->priv_key); |
|
break; |
|
case KEY_RSA: |
|
e = buffer_get_char(&b); |
|
debug("e %lx", e); |
|
if (e < 30) { |
|
e <<= 8; |
|
e += buffer_get_char(&b); |
|
debug("e %lx", e); |
|
e <<= 8; |
|
e += buffer_get_char(&b); |
|
debug("e %lx", e); |
|
} |
|
if (!BN_set_word(key->rsa->e, e)) { |
|
buffer_free(&b); |
|
key_free(key); |
|
return NULL; |
|
} |
|
buffer_get_bignum_bits(&b, key->rsa->d); |
|
buffer_get_bignum_bits(&b, key->rsa->n); |
|
buffer_get_bignum_bits(&b, key->rsa->iqmp); |
|
buffer_get_bignum_bits(&b, key->rsa->q); |
|
buffer_get_bignum_bits(&b, key->rsa->p); |
|
rsa_generate_additional_parameters(key->rsa); |
|
break; |
|
} |
|
rlen = buffer_len(&b); |
|
if (rlen != 0) |
|
error("do_convert_private_ssh2_from_blob: " |
|
"remaining bytes in key blob %d", rlen); |
|
buffer_free(&b); |
|
|
|
/* try the key */ |
|
key_sign(key, &sig, &slen, data, sizeof(data)); |
|
key_verify(key, sig, slen, data, sizeof(data)); |
|
xfree(sig); |
|
return key; |
|
} |
|
|
|
static void |
do_convert_from_ssh2(struct passwd *pw) |
do_convert_from_ssh2(struct passwd *pw) |
{ |
{ |
Key *k; |
Key *k; |
int blen; |
int blen; |
|
u_int len; |
char line[1024], *p; |
char line[1024], *p; |
char blob[8096]; |
u_char blob[8096]; |
char encoded[8096]; |
char encoded[8096]; |
struct stat st; |
struct stat st; |
|
int escaped = 0, private = 0, ok; |
FILE *fp; |
FILE *fp; |
|
|
if (!have_identity) |
if (!have_identity) |
|
|
} |
} |
encoded[0] = '\0'; |
encoded[0] = '\0'; |
while (fgets(line, sizeof(line), fp)) { |
while (fgets(line, sizeof(line), fp)) { |
|
if (!(p = strchr(line, '\n'))) { |
|
fprintf(stderr, "input line too long.\n"); |
|
exit(1); |
|
} |
|
if (p > line && p[-1] == '\\') |
|
escaped++; |
if (strncmp(line, "----", 4) == 0 || |
if (strncmp(line, "----", 4) == 0 || |
strstr(line, ": ") != NULL) { |
strstr(line, ": ") != NULL) { |
fprintf(stderr, "ignore: %s", line); |
if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) |
|
private = 1; |
|
if (strstr(line, " END ") != NULL) { |
|
break; |
|
} |
|
/* fprintf(stderr, "ignore: %s", line); */ |
continue; |
continue; |
} |
} |
if (!(p = strchr(line, '\n'))) { |
if (escaped) { |
fprintf(stderr, "input line too long.\n"); |
escaped--; |
exit(1); |
/* fprintf(stderr, "escaped: %s", line); */ |
|
continue; |
} |
} |
*p = '\0'; |
*p = '\0'; |
strlcat(encoded, line, sizeof(encoded)); |
strlcat(encoded, line, sizeof(encoded)); |
} |
} |
blen = uudecode(encoded, (unsigned char *)blob, sizeof(blob)); |
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) { |
if (blen < 0) { |
fprintf(stderr, "uudecode failed.\n"); |
fprintf(stderr, "uudecode failed.\n"); |
exit(1); |
exit(1); |
} |
} |
k = dsa_key_from_blob(blob, blen); |
k = private ? |
if (!key_write(k, stdout)) |
do_convert_private_ssh2_from_blob(blob, blen) : |
fprintf(stderr, "key_write failed"); |
key_from_blob(blob, blen); |
|
if (k == NULL) { |
|
fprintf(stderr, "decode blob failed.\n"); |
|
exit(1); |
|
} |
|
ok = private ? |
|
(k->type == KEY_DSA ? |
|
PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) : |
|
PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) : |
|
key_write(k, stdout); |
|
if (!ok) { |
|
fprintf(stderr, "key write failed"); |
|
exit(1); |
|
} |
key_free(k); |
key_free(k); |
fprintf(stdout, "\n"); |
if (!private) |
|
fprintf(stdout, "\n"); |
fclose(fp); |
fclose(fp); |
exit(0); |
exit(0); |
} |
} |
|
|
void |
static void |
do_print_public(struct passwd *pw) |
do_print_public(struct passwd *pw) |
{ |
{ |
Key *k; |
Key *prv; |
int len; |
|
unsigned char *blob; |
|
struct stat st; |
struct stat st; |
|
|
if (!have_identity) |
if (!have_identity) |
|
|
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
k = key_new(KEY_DSA); |
prv = load_identity(identity_file); |
if (!try_load_key(identity_file, k)) { |
if (prv == NULL) { |
fprintf(stderr, "load failed\n"); |
fprintf(stderr, "load failed\n"); |
exit(1); |
exit(1); |
} |
} |
dsa_make_key_blob(k, &blob, &len); |
if (!key_write(prv, stdout)) |
if (!key_write(k, stdout)) |
|
fprintf(stderr, "key_write failed"); |
fprintf(stderr, "key_write failed"); |
key_free(k); |
key_free(prv); |
xfree(blob); |
|
fprintf(stdout, "\n"); |
fprintf(stdout, "\n"); |
exit(0); |
exit(0); |
} |
} |
|
|
void |
#ifdef SMARTCARD |
|
static void |
|
do_upload(struct passwd *pw, const char *sc_reader_id) |
|
{ |
|
Key *prv = NULL; |
|
struct stat st; |
|
int ret; |
|
|
|
if (!have_identity) |
|
ask_filename(pw, "Enter file in which the key is"); |
|
if (stat(identity_file, &st) < 0) { |
|
perror(identity_file); |
|
exit(1); |
|
} |
|
prv = load_identity(identity_file); |
|
if (prv == NULL) { |
|
error("load failed"); |
|
exit(1); |
|
} |
|
ret = sc_put_key(prv, sc_reader_id); |
|
key_free(prv); |
|
if (ret < 0) |
|
exit(1); |
|
log("loading key done"); |
|
exit(0); |
|
} |
|
|
|
static void |
|
do_download(struct passwd *pw, const char *sc_reader_id) |
|
{ |
|
Key **keys = NULL; |
|
int i; |
|
|
|
keys = sc_get_keys(sc_reader_id, NULL); |
|
if (keys == NULL) |
|
fatal("cannot read public key from smartcard"); |
|
for (i = 0; keys[i]; i++) { |
|
key_write(keys[i], stdout); |
|
key_free(keys[i]); |
|
fprintf(stdout, "\n"); |
|
} |
|
xfree(keys); |
|
exit(0); |
|
} |
|
#endif /* SMARTCARD */ |
|
|
|
static void |
do_fingerprint(struct passwd *pw) |
do_fingerprint(struct passwd *pw) |
{ |
{ |
FILE *f; |
FILE *f; |
BIGNUM *e, *n; |
|
Key *public; |
Key *public; |
char *comment = NULL, *cp, *ep, line[16*1024]; |
char *comment = NULL, *cp, *ep, line[16*1024], *fp; |
int i, skip = 0, num = 1, invalid = 1; |
int i, skip = 0, num = 1, invalid = 1; |
unsigned int ignore; |
enum fp_rep rep; |
|
enum fp_type fptype; |
struct stat st; |
struct stat st; |
|
|
|
fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; |
|
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; |
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
if (stat(identity_file, &st) < 0) { |
if (stat(identity_file, &st) < 0) { |
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
public = key_new(KEY_RSA); |
public = key_load_public(identity_file, &comment); |
if (load_public_key(identity_file, public, &comment)) { |
if (public != NULL) { |
printf("%d %s %s\n", BN_num_bits(public->rsa->n), |
fp = key_fingerprint(public, fptype, rep); |
key_fingerprint(public), comment); |
printf("%d %s %s\n", key_size(public), fp, comment); |
key_free(public); |
key_free(public); |
|
xfree(comment); |
|
xfree(fp); |
exit(0); |
exit(0); |
} |
} |
key_free(public); |
if (comment) |
|
xfree(comment); |
|
|
/* XXX */ |
|
f = fopen(identity_file, "r"); |
f = fopen(identity_file, "r"); |
if (f != NULL) { |
if (f != NULL) { |
n = BN_new(); |
|
e = BN_new(); |
|
while (fgets(line, sizeof(line), f)) { |
while (fgets(line, sizeof(line), f)) { |
i = strlen(line) - 1; |
i = strlen(line) - 1; |
if (line[i] != '\n') { |
if (line[i] != '\n') { |
|
|
*cp++ = '\0'; |
*cp++ = '\0'; |
} |
} |
ep = cp; |
ep = cp; |
if (auth_rsa_read_key(&cp, &ignore, e, n)) { |
public = key_new(KEY_RSA1); |
invalid = 0; |
if (key_read(public, &cp) != 1) { |
comment = *cp ? cp : comment; |
cp = ep; |
printf("%d %s %s\n", BN_num_bits(n), |
key_free(public); |
fingerprint(e, n), |
public = key_new(KEY_UNSPEC); |
comment ? comment : "no comment"); |
if (key_read(public, &cp) != 1) { |
|
key_free(public); |
|
continue; |
|
} |
} |
} |
|
comment = *cp ? cp : comment; |
|
fp = key_fingerprint(public, fptype, rep); |
|
printf("%d %s %s\n", key_size(public), fp, |
|
comment ? comment : "no comment"); |
|
xfree(fp); |
|
key_free(public); |
|
invalid = 0; |
} |
} |
BN_free(e); |
|
BN_free(n); |
|
fclose(f); |
fclose(f); |
} |
} |
if (invalid) { |
if (invalid) { |
printf("%s is not a valid key file.\n", identity_file); |
printf("%s is not a public key file.\n", identity_file); |
exit(1); |
exit(1); |
} |
} |
exit(0); |
exit(0); |
|
|
* Perform changing a passphrase. The argument is the passwd structure |
* Perform changing a passphrase. The argument is the passwd structure |
* for the current user. |
* for the current user. |
*/ |
*/ |
void |
static void |
do_change_passphrase(struct passwd *pw) |
do_change_passphrase(struct passwd *pw) |
{ |
{ |
char *comment; |
char *comment; |
char *old_passphrase, *passphrase1, *passphrase2; |
char *old_passphrase, *passphrase1, *passphrase2; |
struct stat st; |
struct stat st; |
Key *private; |
Key *private; |
Key *public; |
|
int type = dsa_mode ? KEY_DSA : KEY_RSA; |
|
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
|
|
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
|
|
if (type == KEY_RSA) { |
|
/* XXX this works currently only for RSA */ |
|
public = key_new(type); |
|
if (!load_public_key(identity_file, public, NULL)) { |
|
printf("%s is not a valid key file.\n", identity_file); |
|
exit(1); |
|
} |
|
/* Clear the public key since we are just about to load the whole file. */ |
|
key_free(public); |
|
} |
|
|
|
/* Try to load the file with empty passphrase. */ |
/* Try to load the file with empty passphrase. */ |
private = key_new(type); |
private = key_load_private(identity_file, "", &comment); |
if (!load_private_key(identity_file, "", private, &comment)) { |
if (private == NULL) { |
if (identity_passphrase) |
if (identity_passphrase) |
old_passphrase = xstrdup(identity_passphrase); |
old_passphrase = xstrdup(identity_passphrase); |
else |
else |
old_passphrase = read_passphrase("Enter old passphrase: ", 1); |
old_passphrase = |
if (!load_private_key(identity_file, old_passphrase, private, &comment)) { |
read_passphrase("Enter old passphrase: ", |
memset(old_passphrase, 0, strlen(old_passphrase)); |
RP_ALLOW_STDIN); |
xfree(old_passphrase); |
private = key_load_private(identity_file, old_passphrase, |
|
&comment); |
|
memset(old_passphrase, 0, strlen(old_passphrase)); |
|
xfree(old_passphrase); |
|
if (private == NULL) { |
printf("Bad passphrase.\n"); |
printf("Bad passphrase.\n"); |
exit(1); |
exit(1); |
} |
} |
memset(old_passphrase, 0, strlen(old_passphrase)); |
|
xfree(old_passphrase); |
|
} |
} |
printf("Key has comment '%s'\n", comment); |
printf("Key has comment '%s'\n", comment); |
|
|
|
|
passphrase2 = NULL; |
passphrase2 = NULL; |
} else { |
} else { |
passphrase1 = |
passphrase1 = |
read_passphrase("Enter new passphrase (empty for no passphrase): ", 1); |
read_passphrase("Enter new passphrase (empty for no " |
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
"passphrase): ", RP_ALLOW_STDIN); |
|
passphrase2 = read_passphrase("Enter same passphrase again: ", |
|
RP_ALLOW_STDIN); |
|
|
/* Verify that they are the same. */ |
/* Verify that they are the same. */ |
if (strcmp(passphrase1, passphrase2) != 0) { |
if (strcmp(passphrase1, passphrase2) != 0) { |
|
|
} |
} |
|
|
/* Save the file using the new passphrase. */ |
/* Save the file using the new passphrase. */ |
if (!save_private_key(identity_file, passphrase1, private, comment)) { |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s.\n", identity_file); |
identity_file, strerror(errno)); |
|
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
xfree(passphrase1); |
xfree(passphrase1); |
key_free(private); |
key_free(private); |
|
|
/* |
/* |
* Change the comment of a private key file. |
* Change the comment of a private key file. |
*/ |
*/ |
void |
static void |
do_change_comment(struct passwd *pw) |
do_change_comment(struct passwd *pw) |
{ |
{ |
char new_comment[1024], *comment; |
char new_comment[1024], *comment, *passphrase; |
Key *private; |
Key *private; |
Key *public; |
Key *public; |
char *passphrase; |
|
struct stat st; |
struct stat st; |
FILE *f; |
FILE *f; |
|
int fd; |
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
|
|
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
/* |
private = key_load_private(identity_file, "", &comment); |
* Try to load the public key from the file the verify that it is |
if (private == NULL) { |
* readable and of the proper format. |
|
*/ |
|
public = key_new(KEY_RSA); |
|
if (!load_public_key(identity_file, public, NULL)) { |
|
printf("%s is not a valid key file.\n", identity_file); |
|
exit(1); |
|
} |
|
|
|
private = key_new(KEY_RSA); |
|
if (load_private_key(identity_file, "", private, &comment)) |
|
passphrase = xstrdup(""); |
|
else { |
|
if (identity_passphrase) |
if (identity_passphrase) |
passphrase = xstrdup(identity_passphrase); |
passphrase = xstrdup(identity_passphrase); |
else if (identity_new_passphrase) |
else if (identity_new_passphrase) |
passphrase = xstrdup(identity_new_passphrase); |
passphrase = xstrdup(identity_new_passphrase); |
else |
else |
passphrase = read_passphrase("Enter passphrase: ", 1); |
passphrase = read_passphrase("Enter passphrase: ", |
|
RP_ALLOW_STDIN); |
/* Try to load using the passphrase. */ |
/* Try to load using the passphrase. */ |
if (!load_private_key(identity_file, passphrase, private, &comment)) { |
private = key_load_private(identity_file, passphrase, &comment); |
|
if (private == NULL) { |
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
xfree(passphrase); |
xfree(passphrase); |
printf("Bad passphrase.\n"); |
printf("Bad passphrase.\n"); |
exit(1); |
exit(1); |
} |
} |
|
} else { |
|
passphrase = xstrdup(""); |
} |
} |
|
if (private->type != KEY_RSA1) { |
|
fprintf(stderr, "Comments are only supported for RSA1 keys.\n"); |
|
key_free(private); |
|
exit(1); |
|
} |
printf("Key now has comment '%s'\n", comment); |
printf("Key now has comment '%s'\n", comment); |
|
|
if (identity_comment) { |
if (identity_comment) { |
|
|
} |
} |
|
|
/* Save the file using the new passphrase. */ |
/* Save the file using the new passphrase. */ |
if (!save_private_key(identity_file, passphrase, private, new_comment)) { |
if (!key_save_private(private, identity_file, passphrase, new_comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s.\n", identity_file); |
identity_file, strerror(errno)); |
|
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
xfree(passphrase); |
xfree(passphrase); |
key_free(private); |
key_free(private); |
|
|
} |
} |
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
xfree(passphrase); |
xfree(passphrase); |
|
public = key_from_private(private); |
key_free(private); |
key_free(private); |
|
|
strlcat(identity_file, ".pub", sizeof(identity_file)); |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
f = fopen(identity_file, "w"); |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
if (!f) { |
if (fd == -1) { |
printf("Could not save your public key in %s\n", identity_file); |
printf("Could not save your public key in %s\n", identity_file); |
exit(1); |
exit(1); |
} |
} |
|
f = fdopen(fd, "w"); |
|
if (f == NULL) { |
|
printf("fdopen %s failed", identity_file); |
|
exit(1); |
|
} |
if (!key_write(public, f)) |
if (!key_write(public, f)) |
fprintf(stderr, "write key failed"); |
fprintf(stderr, "write key failed"); |
key_free(public); |
key_free(public); |
|
|
exit(0); |
exit(0); |
} |
} |
|
|
void |
static void |
usage(void) |
usage(void) |
{ |
{ |
printf("Usage: %s [-lpqxXydc] [-b bits] [-f file] [-C comment] [-N new-pass] [-P pass]\n", __progname); |
fprintf(stderr, "Usage: %s [options]\n", __progname); |
|
fprintf(stderr, "Options:\n"); |
|
fprintf(stderr, " -b bits Number of bits in the key to create.\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, " -f filename Filename of the 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, " -p Change passphrase of private key file.\n"); |
|
fprintf(stderr, " -q Quiet.\n"); |
|
fprintf(stderr, " -y Read private key file and print public key.\n"); |
|
fprintf(stderr, " -t type Specify type of key to create.\n"); |
|
fprintf(stderr, " -B Show bubblebabble digest of 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"); |
|
#ifdef SMARTCARD |
|
fprintf(stderr, " -D reader Download public key from smartcard.\n"); |
|
fprintf(stderr, " -U reader Upload private key to smartcard.\n"); |
|
#endif /* SMARTCARD */ |
|
|
exit(1); |
exit(1); |
} |
} |
|
|
|
|
int |
int |
main(int ac, char **av) |
main(int ac, char **av) |
{ |
{ |
char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2; |
char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2; |
|
char *reader_id = NULL; |
|
Key *private, *public; |
struct passwd *pw; |
struct passwd *pw; |
int opt; |
|
struct stat st; |
struct stat st; |
|
int opt, type, fd, download = 0; |
FILE *f; |
FILE *f; |
Key *private; |
|
Key *public; |
|
extern int optind; |
extern int optind; |
extern char *optarg; |
extern char *optarg; |
|
|
OpenSSL_add_all_algorithms(); |
SSLeay_add_all_algorithms(); |
|
|
/* we need this for the home * directory. */ |
/* we need this for the home * directory. */ |
pw = getpwuid(getuid()); |
pw = getpwuid(getuid()); |
|
|
exit(1); |
exit(1); |
} |
} |
|
|
while ((opt = getopt(ac, av, "dqpclRxXyb:f:P:N:C:")) != EOF) { |
while ((opt = getopt(ac, av, "deiqpclBRxXyb:f:t:U:D:P:N:C:")) != -1) { |
switch (opt) { |
switch (opt) { |
case 'b': |
case 'b': |
bits = atoi(optarg); |
bits = atoi(optarg); |
|
|
exit(1); |
exit(1); |
} |
} |
break; |
break; |
|
|
case 'l': |
case 'l': |
print_fingerprint = 1; |
print_fingerprint = 1; |
break; |
break; |
|
case 'B': |
|
print_bubblebabble = 1; |
|
break; |
case 'p': |
case 'p': |
change_passphrase = 1; |
change_passphrase = 1; |
break; |
break; |
|
|
case 'c': |
case 'c': |
change_comment = 1; |
change_comment = 1; |
break; |
break; |
|
|
case 'f': |
case 'f': |
strlcpy(identity_file, optarg, sizeof(identity_file)); |
strlcpy(identity_file, optarg, sizeof(identity_file)); |
have_identity = 1; |
have_identity = 1; |
break; |
break; |
|
|
case 'P': |
case 'P': |
identity_passphrase = optarg; |
identity_passphrase = optarg; |
break; |
break; |
|
|
case 'N': |
case 'N': |
identity_new_passphrase = optarg; |
identity_new_passphrase = optarg; |
break; |
break; |
|
|
case 'C': |
case 'C': |
identity_comment = optarg; |
identity_comment = optarg; |
break; |
break; |
|
|
case 'q': |
case 'q': |
quiet = 1; |
quiet = 1; |
break; |
break; |
|
|
case 'R': |
case 'R': |
if (rsa_alive() == 0) |
/* unused */ |
exit(1); |
exit(0); |
else |
|
exit(0); |
|
break; |
break; |
|
case 'e': |
case 'x': |
case 'x': |
|
/* export key */ |
convert_to_ssh2 = 1; |
convert_to_ssh2 = 1; |
break; |
break; |
|
case 'i': |
case 'X': |
case 'X': |
|
/* import key */ |
convert_from_ssh2 = 1; |
convert_from_ssh2 = 1; |
break; |
break; |
|
|
case 'y': |
case 'y': |
print_public = 1; |
print_public = 1; |
break; |
break; |
|
|
case 'd': |
case 'd': |
dsa_mode = 1; |
key_type_name = "dsa"; |
break; |
break; |
|
case 't': |
|
key_type_name = optarg; |
|
break; |
|
case 'D': |
|
download = 1; |
|
case 'U': |
|
reader_id = optarg; |
|
break; |
case '?': |
case '?': |
default: |
default: |
usage(); |
usage(); |
|
|
printf("Can only have one of -p and -c.\n"); |
printf("Can only have one of -p and -c.\n"); |
usage(); |
usage(); |
} |
} |
/* check if RSA support is needed and exists */ |
if (print_fingerprint || print_bubblebabble) |
if (dsa_mode == 0 && rsa_alive() == 0) { |
|
fprintf(stderr, |
|
"%s: no RSA support in libssl and libcrypto. See ssl(8).\n", |
|
__progname); |
|
exit(1); |
|
} |
|
if (print_fingerprint) |
|
do_fingerprint(pw); |
do_fingerprint(pw); |
if (change_passphrase) |
if (change_passphrase) |
do_change_passphrase(pw); |
do_change_passphrase(pw); |
|
|
do_convert_from_ssh2(pw); |
do_convert_from_ssh2(pw); |
if (print_public) |
if (print_public) |
do_print_public(pw); |
do_print_public(pw); |
|
if (reader_id != NULL) { |
|
#ifdef SMARTCARD |
|
if (download) |
|
do_download(pw, reader_id); |
|
else |
|
do_upload(pw, reader_id); |
|
#else /* SMARTCARD */ |
|
fatal("no support for smartcards."); |
|
#endif /* SMARTCARD */ |
|
} |
|
|
arc4random_stir(); |
arc4random_stir(); |
|
|
if (dsa_mode != 0) { |
if (key_type_name == NULL) { |
if (!quiet) |
printf("You must specify a key type (-t).\n"); |
printf("Generating DSA parameter and key.\n"); |
usage(); |
public = private = dsa_generate_key(bits); |
|
if (private == NULL) { |
|
fprintf(stderr, "dsa_generate_keys failed"); |
|
exit(1); |
|
} |
|
} else { |
|
if (quiet) |
|
rsa_set_verbose(0); |
|
/* Generate the rsa key pair. */ |
|
public = key_new(KEY_RSA); |
|
private = key_new(KEY_RSA); |
|
rsa_generate_key(private->rsa, public->rsa, bits); |
|
} |
} |
|
type = key_type_from_name(key_type_name); |
|
if (type == KEY_UNSPEC) { |
|
fprintf(stderr, "unknown key type %s\n", key_type_name); |
|
exit(1); |
|
} |
|
if (!quiet) |
|
printf("Generating public/private %s key pair.\n", key_type_name); |
|
private = key_generate(type, bits); |
|
if (private == NULL) { |
|
fprintf(stderr, "key_generate failed"); |
|
exit(1); |
|
} |
|
public = key_from_private(private); |
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which to save the key"); |
ask_filename(pw, "Enter file in which to save the key"); |
|
|
/* Create ~/.ssh directory if it doesn\'t already exist. */ |
/* Create ~/.ssh directory if it doesn\'t already exist. */ |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, SSH_USER_DIR); |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR); |
if (strstr(identity_file, dotsshdir) != NULL && |
if (strstr(identity_file, dotsshdir) != NULL && |
stat(dotsshdir, &st) < 0) { |
stat(dotsshdir, &st) < 0) { |
if (mkdir(dotsshdir, 0755) < 0) |
if (mkdir(dotsshdir, 0700) < 0) |
error("Could not create directory '%s'.", dotsshdir); |
error("Could not create directory '%s'.", dotsshdir); |
else if (!quiet) |
else if (!quiet) |
printf("Created directory '%s'.\n", dotsshdir); |
printf("Created directory '%s'.\n", dotsshdir); |
|
|
else { |
else { |
passphrase_again: |
passphrase_again: |
passphrase1 = |
passphrase1 = |
read_passphrase("Enter passphrase (empty for no passphrase): ", 1); |
read_passphrase("Enter passphrase (empty for no " |
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
"passphrase): ", RP_ALLOW_STDIN); |
|
passphrase2 = read_passphrase("Enter same passphrase again: ", |
|
RP_ALLOW_STDIN); |
if (strcmp(passphrase1, passphrase2) != 0) { |
if (strcmp(passphrase1, passphrase2) != 0) { |
/* The passphrases do not match. Clear them and retry. */ |
/* |
|
* The passphrases do not match. Clear them and |
|
* retry. |
|
*/ |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase2, 0, strlen(passphrase2)); |
memset(passphrase2, 0, strlen(passphrase2)); |
xfree(passphrase1); |
xfree(passphrase1); |
|
|
} |
} |
|
|
/* Save the key with the given passphrase and comment. */ |
/* Save the key with the given passphrase and comment. */ |
if (!save_private_key(identity_file, passphrase1, private, comment)) { |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s.\n", identity_file); |
identity_file, strerror(errno)); |
|
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
xfree(passphrase1); |
xfree(passphrase1); |
exit(1); |
exit(1); |
|
|
xfree(passphrase1); |
xfree(passphrase1); |
|
|
/* Clear the private key and the random number generator. */ |
/* Clear the private key and the random number generator. */ |
if (private != public) { |
key_free(private); |
key_free(private); |
|
} |
|
arc4random_stir(); |
arc4random_stir(); |
|
|
if (!quiet) |
if (!quiet) |
printf("Your identification has been saved in %s.\n", identity_file); |
printf("Your identification has been saved in %s.\n", identity_file); |
|
|
strlcat(identity_file, ".pub", sizeof(identity_file)); |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
f = fopen(identity_file, "w"); |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
if (!f) { |
if (fd == -1) { |
printf("Could not save your public key in %s\n", identity_file); |
printf("Could not save your public key in %s\n", identity_file); |
exit(1); |
exit(1); |
} |
} |
|
f = fdopen(fd, "w"); |
|
if (f == NULL) { |
|
printf("fdopen %s failed", identity_file); |
|
exit(1); |
|
} |
if (!key_write(public, f)) |
if (!key_write(public, f)) |
fprintf(stderr, "write key failed"); |
fprintf(stderr, "write key failed"); |
fprintf(f, " %s\n", comment); |
fprintf(f, " %s\n", comment); |
fclose(f); |
fclose(f); |
|
|
if (!quiet) { |
if (!quiet) { |
|
char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX); |
printf("Your public key has been saved in %s.\n", |
printf("Your public key has been saved in %s.\n", |
identity_file); |
identity_file); |
printf("The key fingerprint is:\n"); |
printf("The key fingerprint is:\n"); |
printf("%s %s\n", key_fingerprint(public), comment); |
printf("%s %s\n", fp, comment); |
|
xfree(fp); |
} |
} |
|
|
key_free(public); |
key_free(public); |