- Merge big update to OpenSSH-2.0 from OpenBSD CVS
[README.openssh2]
- interop w/ F-secure windows client
- sync documentation
- ssh_host_dsa_key not ssh_dsa_key
[auth-rsa.c]
- missing fclose
[auth.c authfile.c compat.c dsa.c dsa.h hostfile.c key.c key.h radix.c]
[readconf.c readconf.h ssh-add.c ssh-keygen.c ssh.c ssh.h sshconnect.c]
[sshd.c uuencode.c uuencode.h authfile.h]
- add DSA pubkey auth and other SSH2 fixes. use ssh-keygen -[xX]
for trading keys with the real and the original SSH, directly from the
people who invented the SSH protocol.
[auth.c auth.h authfile.c sshconnect.c auth1.c auth2.c sshconnect.h]
[sshconnect1.c sshconnect2.c]
- split auth/sshconnect in one file per protocol version
[sshconnect2.c]
- remove debug
[uuencode.c]
- add trailing =
[version.h]
- OpenSSH-2.0
[ssh-keygen.1 ssh-keygen.c]
- add -R flag: exit code indicates if RSA is alive
[sshd.c]
- remove unused
silent if -Q is specified
[ssh.h]
- host key becomes /etc/ssh_host_dsa_key
[readconf.c servconf.c ]
- ssh/sshd default to proto 1 and 2
[uuencode.c]
- remove debug
[auth2.c ssh-keygen.c sshconnect2.c sshd.c]
- xfree DSA blobs
[auth2.c serverloop.c session.c]
- cleanup logging for sshd/2, respect PasswordAuth no
[sshconnect2.c]
- less debug, respect .ssh/config
[README.openssh2 channels.c channels.h]
- clientloop.c session.c ssh.c
- support for x11-fwding, client+server
diff --git a/ssh-keygen.c b/ssh-keygen.c
index f2484a4..0155949 100644
--- a/ssh-keygen.c
+++ b/ssh-keygen.c
@@ -7,20 +7,23 @@
*/
#include "includes.h"
-RCSID("$Id: ssh-keygen.c,v 1.13 2000/04/16 01:18:46 damien Exp $");
+RCSID("$Id: ssh-keygen.c,v 1.14 2000/04/29 13:57:12 damien Exp $");
-#include "rsa.h"
+#include <openssl/evp.h>
+#include <openssl/pem.h>
+#include <openssl/rsa.h>
+#include <openssl/dsa.h>
+
#include "ssh.h"
#include "xmalloc.h"
#include "fingerprint.h"
+#include "key.h"
+#include "rsa.h"
+#include "dsa.h"
+#include "authfile.h"
+#include "uuencode.h"
-/* Generated private key. */
-RSA *private_key;
-
-/* Generated public key. */
-RSA *public_key;
-
-/* Number of bits in the RSA 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;
/*
@@ -53,6 +56,12 @@
/* This is set to the new comment if given on the command line. */
char *identity_comment = NULL;
+/* Dump public key file in format used by real and the original SSH 2 */
+int convert_to_ssh2 = 0;
+int convert_from_ssh2 = 0;
+int print_public = 0;
+int dsa_mode = 0;
+
/* argv0 */
#ifdef HAVE___PROGNAME
extern char *__progname;
@@ -60,6 +69,8 @@
const char *__progname = "ssh-keygen";
#endif /* HAVE___PROGNAME */
+char hostname[MAXHOSTNAMELEN];
+
void
ask_filename(struct passwd *pw, const char *prompt)
{
@@ -77,12 +88,140 @@
have_identity = 1;
}
+int
+try_load_key(char *filename, Key *k)
+{
+ int success = 1;
+ if (!load_private_key(filename, "", k, NULL)) {
+ char *pass = read_passphrase("Enter passphrase: ", 1);
+ if (!load_private_key(filename, pass, k, NULL)) {
+ success = 0;
+ }
+ memset(pass, 0, strlen(pass));
+ xfree(pass);
+ }
+ return success;
+}
+
+#define SSH_COM_MAGIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
+#define SSH_COM_MAGIC_END "---- END SSH2 PUBLIC KEY ----"
+
+void
+do_convert_to_ssh2(struct passwd *pw)
+{
+ Key *k;
+ int len;
+ unsigned char *blob;
+ 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);
+ }
+ k = key_new(KEY_DSA);
+ if (!try_load_key(identity_file, k)) {
+ fprintf(stderr, "load failed\n");
+ exit(1);
+ }
+ dsa_make_key_blob(k, &blob, &len);
+ fprintf(stdout, SSH_COM_MAGIC_BEGIN "\n");
+ fprintf(stdout,
+ "Comment: \"%d-bit DSA, converted from openssh by %s@%s\"\n",
+ BN_num_bits(k->dsa->p),
+ pw->pw_name, hostname);
+ dump_base64(stdout, blob, len);
+ fprintf(stdout, SSH_COM_MAGIC_END "\n");
+ key_free(k);
+ xfree(blob);
+ exit(0);
+}
+
+void
+do_convert_from_ssh2(struct passwd *pw)
+{
+ Key *k;
+ int blen;
+ char line[1024], *p;
+ char blob[8096];
+ char encoded[8096];
+ struct stat st;
+ FILE *fp;
+
+ if (!have_identity)
+ ask_filename(pw, "Enter file in which the key is");
+ if (stat(identity_file, &st) < 0) {
+ perror(identity_file);
+ exit(1);
+ }
+ fp = fopen(identity_file, "r");
+ if (fp == NULL) {
+ perror(identity_file);
+ exit(1);
+ }
+ encoded[0] = '\0';
+ while (fgets(line, sizeof(line), fp)) {
+ if (strncmp(line, "----", 4) == 0 ||
+ strstr(line, ": ") != NULL) {
+ fprintf(stderr, "ignore: %s", line);
+ continue;
+ }
+ if (!(p = strchr(line, '\n'))) {
+ fprintf(stderr, "input line too long.\n");
+ exit(1);
+ }
+ *p = '\0';
+ strlcat(encoded, line, sizeof(encoded));
+ }
+ blen = uudecode(encoded, (unsigned char *)blob, sizeof(blob));
+ if (blen < 0) {
+ fprintf(stderr, "uudecode failed.\n");
+ exit(1);
+ }
+ k = dsa_key_from_blob(blob, blen);
+ if (!key_write(k, stdout))
+ fprintf(stderr, "key_write failed");
+ key_free(k);
+ fprintf(stdout, "\n");
+ fclose(fp);
+ exit(0);
+}
+
+void
+do_print_public(struct passwd *pw)
+{
+ Key *k;
+ int len;
+ unsigned char *blob;
+ 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);
+ }
+ k = key_new(KEY_DSA);
+ if (!try_load_key(identity_file, k)) {
+ fprintf(stderr, "load failed\n");
+ exit(1);
+ }
+ dsa_make_key_blob(k, &blob, &len);
+ if (!key_write(k, stdout))
+ fprintf(stderr, "key_write failed");
+ key_free(k);
+ xfree(blob);
+ fprintf(stdout, "\n");
+ exit(0);
+}
+
void
do_fingerprint(struct passwd *pw)
{
FILE *f;
BIGNUM *e, *n;
- RSA *public_key;
+ Key *public;
char *comment = NULL, *cp, *ep, line[16*1024];
int i, skip = 0, num = 1, invalid = 1;
unsigned int ignore;
@@ -94,17 +233,16 @@
perror(identity_file);
exit(1);
}
-
- public_key = RSA_new();
- if (load_public_key(identity_file, public_key, &comment)) {
- printf("%d %s %s\n", BN_num_bits(public_key->n),
- fingerprint(public_key->e, public_key->n),
- comment);
- RSA_free(public_key);
+ public = key_new(KEY_RSA);
+ if (load_public_key(identity_file, public, &comment)) {
+ printf("%d %s %s\n", BN_num_bits(public->rsa->n),
+ key_fingerprint(public), comment);
+ key_free(public);
exit(0);
}
- RSA_free(public_key);
+ key_free(public);
+ /* XXX */
f = fopen(identity_file, "r");
if (f != NULL) {
n = BN_new();
@@ -172,7 +310,9 @@
char *comment;
char *old_passphrase, *passphrase1, *passphrase2;
struct stat st;
- RSA *private_key;
+ Key *private;
+ Key *public;
+ int type = dsa_mode ? KEY_DSA : KEY_RSA;
if (!have_identity)
ask_filename(pw, "Enter file in which the key is");
@@ -180,22 +320,26 @@
perror(identity_file);
exit(1);
}
- public_key = RSA_new();
- if (!load_public_key(identity_file, public_key, NULL)) {
- printf("%s is not a valid key file.\n", identity_file);
- 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);
}
- /* Clear the public key since we are just about to load the whole file. */
- RSA_free(public_key);
/* Try to load the file with empty passphrase. */
- private_key = RSA_new();
- if (!load_private_key(identity_file, "", private_key, &comment)) {
+ private = key_new(type);
+ if (!load_private_key(identity_file, "", private, &comment)) {
if (identity_passphrase)
old_passphrase = xstrdup(identity_passphrase);
else
old_passphrase = read_passphrase("Enter old passphrase: ", 1);
- if (!load_private_key(identity_file, old_passphrase, private_key, &comment)) {
+ if (!load_private_key(identity_file, old_passphrase, private, &comment)) {
memset(old_passphrase, 0, strlen(old_passphrase));
xfree(old_passphrase);
printf("Bad passphrase.\n");
@@ -230,19 +374,19 @@
}
/* Save the file using the new passphrase. */
- if (!save_private_key(identity_file, passphrase1, private_key, comment)) {
+ if (!save_private_key(identity_file, passphrase1, private, comment)) {
printf("Saving the key failed: %s: %s.\n",
identity_file, strerror(errno));
memset(passphrase1, 0, strlen(passphrase1));
xfree(passphrase1);
- RSA_free(private_key);
+ key_free(private);
xfree(comment);
exit(1);
}
/* Destroy the passphrase and the copy of the key in memory. */
memset(passphrase1, 0, strlen(passphrase1));
xfree(passphrase1);
- RSA_free(private_key); /* Destroys contents */
+ key_free(private); /* Destroys contents */
xfree(comment);
printf("Your identification has been saved with the new passphrase.\n");
@@ -256,11 +400,11 @@
do_change_comment(struct passwd *pw)
{
char new_comment[1024], *comment;
- RSA *private_key;
+ Key *private;
+ Key *public;
char *passphrase;
struct stat st;
FILE *f;
- char *tmpbuf;
if (!have_identity)
ask_filename(pw, "Enter file in which the key is");
@@ -272,14 +416,14 @@
* Try to load the public key from the file the verify that it is
* readable and of the proper format.
*/
- public_key = RSA_new();
- if (!load_public_key(identity_file, public_key, NULL)) {
+ 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 = RSA_new();
- if (load_private_key(identity_file, "", private_key, &comment))
+ private = key_new(KEY_RSA);
+ if (load_private_key(identity_file, "", private, &comment))
passphrase = xstrdup("");
else {
if (identity_passphrase)
@@ -289,7 +433,7 @@
else
passphrase = read_passphrase("Enter passphrase: ", 1);
/* Try to load using the passphrase. */
- if (!load_private_key(identity_file, passphrase, private_key, &comment)) {
+ if (!load_private_key(identity_file, passphrase, private, &comment)) {
memset(passphrase, 0, strlen(passphrase));
xfree(passphrase);
printf("Bad passphrase.\n");
@@ -305,7 +449,7 @@
fflush(stdout);
if (!fgets(new_comment, sizeof(new_comment), stdin)) {
memset(passphrase, 0, strlen(passphrase));
- RSA_free(private_key);
+ key_free(private);
exit(1);
}
if (strchr(new_comment, '\n'))
@@ -313,18 +457,18 @@
}
/* Save the file using the new passphrase. */
- if (!save_private_key(identity_file, passphrase, private_key, new_comment)) {
+ if (!save_private_key(identity_file, passphrase, private, new_comment)) {
printf("Saving the key failed: %s: %s.\n",
identity_file, strerror(errno));
memset(passphrase, 0, strlen(passphrase));
xfree(passphrase);
- RSA_free(private_key);
+ key_free(private);
xfree(comment);
exit(1);
}
memset(passphrase, 0, strlen(passphrase));
xfree(passphrase);
- RSA_free(private_key);
+ key_free(private);
strlcat(identity_file, ".pub", sizeof(identity_file));
f = fopen(identity_file, "w");
@@ -332,13 +476,10 @@
printf("Could not save your public key in %s\n", identity_file);
exit(1);
}
- fprintf(f, "%d ", BN_num_bits(public_key->n));
- tmpbuf = BN_bn2dec(public_key->e);
- fprintf(f, "%s ", tmpbuf);
- free(tmpbuf);
- tmpbuf = BN_bn2dec(public_key->n);
- fprintf(f, "%s %s\n", tmpbuf, new_comment);
- free(tmpbuf);
+ if (!key_write(public, f))
+ fprintf(stderr, "write key failed");
+ key_free(public);
+ fprintf(f, " %s\n", new_comment);
fclose(f);
xfree(comment);
@@ -351,7 +492,7 @@
usage(void)
{
printf("ssh-keygen version %s\n", SSH_VERSION);
- printf("Usage: %s [-b bits] [-p] [-c] [-l] [-f file] [-P pass] [-N new-pass] [-C comment]\n", __progname);
+ printf("Usage: %s [-b bits] [-p] [-c] [-l] [-x] [-X] [-y] [-f file] [-P pass] [-N new-pass] [-C comment]\n", __progname);
exit(1);
}
@@ -363,29 +504,28 @@
{
char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2;
struct passwd *pw;
- char *tmpbuf;
int opt;
struct stat st;
FILE *f;
- char hostname[MAXHOSTNAMELEN];
+ Key *private;
+ Key *public;
extern int optind;
extern char *optarg;
- /* check if RSA support exists */
- if (rsa_alive() == 0) {
- fprintf(stderr,
- "%s: no RSA support in libssl and libcrypto. See ssl(8).\n",
- __progname);
- exit(1);
- }
+ OpenSSL_add_all_algorithms();
+
/* we need this for the home * directory. */
pw = getpwuid(getuid());
if (!pw) {
printf("You don't exist, go away!\n");
exit(1);
}
+ if (gethostname(hostname, sizeof(hostname)) < 0) {
+ perror("gethostname");
+ exit(1);
+ }
- while ((opt = getopt(ac, av, "qpclb:f:P:N:C:")) != EOF) {
+ while ((opt = getopt(ac, av, "dqpclRxXyb:f:P:N:C:")) != EOF) {
switch (opt) {
case 'b':
bits = atoi(optarg);
@@ -428,6 +568,29 @@
quiet = 1;
break;
+ case 'R':
+ if (rsa_alive() == 0)
+ exit(1);
+ else
+ exit(0);
+ break;
+
+ case 'x':
+ convert_to_ssh2 = 1;
+ break;
+
+ case 'X':
+ convert_from_ssh2 = 1;
+ break;
+
+ case 'y':
+ print_public = 1;
+ break;
+
+ case 'd':
+ dsa_mode = 1;
+ break;
+
case '?':
default:
usage();
@@ -441,22 +604,44 @@
printf("Can only have one of -p and -c.\n");
usage();
}
+ /* check if RSA support is needed and exists */
+ 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);
if (change_passphrase)
do_change_passphrase(pw);
if (change_comment)
do_change_comment(pw);
+ if (convert_to_ssh2)
+ do_convert_to_ssh2(pw);
+ if (convert_from_ssh2)
+ do_convert_from_ssh2(pw);
+ if (print_public)
+ do_print_public(pw);
arc4random_stir();
- if (quiet)
- rsa_set_verbose(0);
-
- /* Generate the rsa key pair. */
- private_key = RSA_new();
- public_key = RSA_new();
- rsa_generate_key(private_key, public_key, bits);
+ if (dsa_mode != 0) {
+ if (!quiet)
+ printf("Generating DSA parameter and key.\n");
+ 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);
+ }
if (!have_identity)
ask_filename(pw, "Enter file in which to save the key");
@@ -509,17 +694,13 @@
strlcpy(comment, identity_comment, sizeof(comment));
} else {
/* Create default commend field for the passphrase. */
- if (gethostname(hostname, sizeof(hostname)) < 0) {
- perror("gethostname");
- exit(1);
- }
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
}
/* Save the key with the given passphrase and comment. */
- if (!save_private_key(identity_file, passphrase1, private_key, comment)) {
+ if (!save_private_key(identity_file, passphrase1, private, comment)) {
printf("Saving the key failed: %s: %s.\n",
- identity_file, strerror(errno));
+ identity_file, strerror(errno));
memset(passphrase1, 0, strlen(passphrase1));
xfree(passphrase1);
exit(1);
@@ -529,7 +710,9 @@
xfree(passphrase1);
/* Clear the private key and the random number generator. */
- RSA_free(private_key);
+ if (private != public) {
+ key_free(private);
+ }
arc4random_stir();
if (!quiet)
@@ -541,21 +724,18 @@
printf("Could not save your public key in %s\n", identity_file);
exit(1);
}
- fprintf(f, "%d ", BN_num_bits(public_key->n));
- tmpbuf = BN_bn2dec(public_key->e);
- fprintf(f, "%s ", tmpbuf);
- free(tmpbuf);
- tmpbuf = BN_bn2dec(public_key->n);
- fprintf(f, "%s %s\n", tmpbuf, comment);
- free(tmpbuf);
+ if (!key_write(public, f))
+ fprintf(stderr, "write key failed");
+ fprintf(f, " %s\n", comment);
fclose(f);
if (!quiet) {
- printf("Your public key has been saved in %s.\n", identity_file);
+ printf("Your public key has been saved in %s.\n",
+ identity_file);
printf("The key fingerprint is:\n");
- printf("%d %s %s\n", BN_num_bits(public_key->n),
- fingerprint(public_key->e, public_key->n),
- comment);
+ printf("%s %s\n", key_fingerprint(public), comment);
}
+
+ key_free(public);
exit(0);
}