version 1.7, 1999/11/16 22:27:54 |
version 1.178, 2010/02/09 00:50:59 |
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/* $OpenBSD$ */ |
/* |
/* |
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* Author: Tatu Ylonen <ylo@cs.hut.fi> |
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* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
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* All rights reserved |
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* Identity and host key generation and maintenance. |
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* |
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* As far as I am concerned, the code I have written for this software |
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* can be used freely for any purpose. Any derived versions of this |
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* software must be clearly marked as such, and if the derived work is |
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* incompatible with the protocol description in the RFC file, it must be |
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* called by a name other than "ssh" or "Secure Shell". |
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*/ |
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ssh-keygen.c |
#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/stat.h> |
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#include <sys/param.h> |
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Author: Tatu Ylonen <ylo@cs.hut.fi> |
#include <openssl/evp.h> |
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#include <openssl/pem.h> |
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Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
#include <errno.h> |
All rights reserved |
#include <fcntl.h> |
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#include <pwd.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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Created: Mon Mar 27 02:26:40 1995 ylo |
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Identity and host key generation and maintenance. |
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*/ |
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#include "includes.h" |
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RCSID("$Id$"); |
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#include "rsa.h" |
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#include "ssh.h" |
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#include "xmalloc.h" |
#include "xmalloc.h" |
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#include "key.h" |
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#include "rsa.h" |
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#include "authfile.h" |
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#include "uuencode.h" |
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#include "buffer.h" |
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#include "pathnames.h" |
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#include "log.h" |
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#include "misc.h" |
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#include "match.h" |
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#include "hostfile.h" |
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#include "dns.h" |
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/* Generated private key. */ |
#ifdef ENABLE_PKCS11 |
RSA *private_key; |
#include "ssh-pkcs11.h" |
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#endif |
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/* Generated public key. */ |
/* Number of bits in the RSA/DSA key. This value can be set on the command line. */ |
RSA *public_key; |
#define DEFAULT_BITS 2048 |
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#define DEFAULT_BITS_DSA 1024 |
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u_int32_t bits = 0; |
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/* Number of bits in the RSA key. This value can be changed on the command |
/* |
line. */ |
* Flag indicating that we just want to change the passphrase. This can be |
int bits = 1024; |
* set on the command line. |
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*/ |
/* Flag indicating that we just want to change the passphrase. This can be |
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set on the command line. */ |
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int change_passphrase = 0; |
int change_passphrase = 0; |
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/* Flag indicating that we just want to change the comment. This can be set |
/* |
on the command line. */ |
* Flag indicating that we just want to change the comment. This can be set |
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* on the command line. |
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*/ |
int change_comment = 0; |
int change_comment = 0; |
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int quiet = 0; |
int quiet = 0; |
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/* This is set to the identity file name if given on the command line. */ |
int log_level = SYSLOG_LEVEL_INFO; |
char *identity_file = NULL; |
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/* Flag indicating that we want to hash a known_hosts file */ |
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int hash_hosts = 0; |
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/* Flag indicating that we want lookup a host in known_hosts file */ |
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int find_host = 0; |
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/* Flag indicating that we want to delete a host from a known_hosts file */ |
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int delete_host = 0; |
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/* Flag indicating that we just want to see the key fingerprint */ |
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int print_fingerprint = 0; |
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int print_bubblebabble = 0; |
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/* The identity file name, given on the command line or entered by the user. */ |
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char identity_file[1024]; |
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int have_identity = 0; |
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/* This is set to the passphrase if given on the command line. */ |
/* This is set to the passphrase if given on the command line. */ |
char *identity_passphrase = NULL; |
char *identity_passphrase = NULL; |
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/* This is set to the new comment if given on the command line. */ |
/* This is set to the new comment if given on the command line. */ |
char *identity_comment = NULL; |
char *identity_comment = NULL; |
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/* Perform changing a passphrase. The argument is the passwd structure |
/* Dump public key file in format used by real and the original SSH 2 */ |
for the current user. */ |
int convert_to_ssh2 = 0; |
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int convert_from_ssh2 = 0; |
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int print_public = 0; |
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int print_generic = 0; |
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char * |
char *key_type_name = NULL; |
get_filename(struct passwd *pw, const char *prompt) |
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/* argv0 */ |
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extern char *__progname; |
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char hostname[MAXHOSTNAMELEN]; |
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/* moduli.c */ |
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int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *); |
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int prime_test(FILE *, FILE *, u_int32_t, u_int32_t); |
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static void |
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ask_filename(struct passwd *pw, const char *prompt) |
{ |
{ |
char buf[1024], default_file[1024]; |
char buf[1024]; |
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char *name = NULL; |
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/* Read key file name. */ |
if (key_type_name == NULL) |
if (identity_file != NULL) { |
name = _PATH_SSH_CLIENT_ID_RSA; |
return xstrdup(identity_file); |
else { |
} else { |
switch (key_type_from_name(key_type_name)) { |
snprintf(default_file, sizeof default_file, "%s/%s", |
case KEY_RSA1: |
pw->pw_dir, SSH_CLIENT_IDENTITY); |
name = _PATH_SSH_CLIENT_IDENTITY; |
printf("%s (%s): ", prompt, default_file); |
break; |
fflush(stdout); |
case KEY_DSA: |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
name = _PATH_SSH_CLIENT_ID_DSA; |
exit(1); |
break; |
if (strchr(buf, '\n')) |
case KEY_RSA: |
*strchr(buf, '\n') = 0; |
name = _PATH_SSH_CLIENT_ID_RSA; |
if (strcmp(buf, "") == 0) |
break; |
return xstrdup(default_file); |
default: |
} |
fprintf(stderr, "bad key type\n"); |
return xstrdup(buf); |
exit(1); |
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break; |
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} |
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} |
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snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); |
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fprintf(stderr, "%s (%s): ", prompt, identity_file); |
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if (fgets(buf, sizeof(buf), stdin) == NULL) |
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exit(1); |
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buf[strcspn(buf, "\n")] = '\0'; |
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if (strcmp(buf, "") != 0) |
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strlcpy(identity_file, buf, sizeof(identity_file)); |
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have_identity = 1; |
} |
} |
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void |
static Key * |
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load_identity(char *filename) |
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{ |
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char *pass; |
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Key *prv; |
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prv = key_load_private(filename, "", NULL); |
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if (prv == NULL) { |
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if (identity_passphrase) |
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pass = xstrdup(identity_passphrase); |
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else |
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pass = read_passphrase("Enter passphrase: ", |
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RP_ALLOW_STDIN); |
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prv = key_load_private(filename, pass, NULL); |
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memset(pass, 0, strlen(pass)); |
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xfree(pass); |
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} |
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return prv; |
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} |
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#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" |
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#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----" |
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#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----" |
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#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb |
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static void |
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do_convert_to_ssh2(struct passwd *pw) |
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{ |
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Key *k; |
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u_int len; |
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u_char *blob; |
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char comment[61]; |
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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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if ((k = key_load_public(identity_file, NULL)) == NULL) { |
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if ((k = load_identity(identity_file)) == NULL) { |
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fprintf(stderr, "load failed\n"); |
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exit(1); |
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} |
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} |
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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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} |
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if (key_to_blob(k, &blob, &len) <= 0) { |
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fprintf(stderr, "key_to_blob failed\n"); |
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exit(1); |
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} |
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/* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */ |
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snprintf(comment, sizeof(comment), |
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"%u-bit %s, converted by %s@%s from OpenSSH", |
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key_size(k), key_type(k), |
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pw->pw_name, hostname); |
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fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); |
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fprintf(stdout, "Comment: \"%s\"\n", comment); |
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dump_base64(stdout, blob, len); |
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fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); |
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key_free(k); |
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xfree(blob); |
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exit(0); |
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} |
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static void |
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buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
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{ |
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u_int bignum_bits = buffer_get_int(b); |
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u_int bytes = (bignum_bits + 7) / 8; |
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if (buffer_len(b) < bytes) |
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fatal("buffer_get_bignum_bits: input buffer too small: " |
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"need %d have %d", bytes, buffer_len(b)); |
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if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL) |
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fatal("buffer_get_bignum_bits: BN_bin2bn failed"); |
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buffer_consume(b, bytes); |
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} |
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static Key * |
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do_convert_private_ssh2_from_blob(u_char *blob, u_int blen) |
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{ |
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Buffer b; |
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Key *key = NULL; |
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char *type, *cipher; |
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u_char *sig, data[] = "abcde12345"; |
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int magic, rlen, ktype, i1, i2, i3, i4; |
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u_int slen; |
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u_long e; |
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buffer_init(&b); |
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buffer_append(&b, blob, blen); |
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magic = buffer_get_int(&b); |
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if (magic != SSH_COM_PRIVATE_KEY_MAGIC) { |
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error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC); |
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buffer_free(&b); |
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return NULL; |
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} |
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i1 = buffer_get_int(&b); |
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type = buffer_get_string(&b, NULL); |
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cipher = buffer_get_string(&b, NULL); |
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i2 = buffer_get_int(&b); |
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i3 = buffer_get_int(&b); |
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i4 = buffer_get_int(&b); |
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debug("ignore (%d %d %d %d)", i1, i2, i3, i4); |
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if (strcmp(cipher, "none") != 0) { |
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error("unsupported cipher %s", cipher); |
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xfree(cipher); |
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buffer_free(&b); |
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xfree(type); |
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return NULL; |
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} |
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xfree(cipher); |
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if (strstr(type, "dsa")) { |
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ktype = KEY_DSA; |
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} else if (strstr(type, "rsa")) { |
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ktype = KEY_RSA; |
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} else { |
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buffer_free(&b); |
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xfree(type); |
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return NULL; |
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} |
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key = key_new_private(ktype); |
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xfree(type); |
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switch (key->type) { |
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case KEY_DSA: |
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buffer_get_bignum_bits(&b, key->dsa->p); |
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buffer_get_bignum_bits(&b, key->dsa->g); |
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buffer_get_bignum_bits(&b, key->dsa->q); |
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buffer_get_bignum_bits(&b, key->dsa->pub_key); |
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buffer_get_bignum_bits(&b, key->dsa->priv_key); |
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break; |
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case KEY_RSA: |
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e = buffer_get_char(&b); |
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debug("e %lx", e); |
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if (e < 30) { |
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e <<= 8; |
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e += buffer_get_char(&b); |
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debug("e %lx", e); |
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e <<= 8; |
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e += buffer_get_char(&b); |
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debug("e %lx", e); |
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} |
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if (!BN_set_word(key->rsa->e, e)) { |
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buffer_free(&b); |
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key_free(key); |
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return NULL; |
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} |
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buffer_get_bignum_bits(&b, key->rsa->d); |
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buffer_get_bignum_bits(&b, key->rsa->n); |
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buffer_get_bignum_bits(&b, key->rsa->iqmp); |
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buffer_get_bignum_bits(&b, key->rsa->q); |
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buffer_get_bignum_bits(&b, key->rsa->p); |
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rsa_generate_additional_parameters(key->rsa); |
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break; |
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} |
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rlen = buffer_len(&b); |
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if (rlen != 0) |
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error("do_convert_private_ssh2_from_blob: " |
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"remaining bytes in key blob %d", rlen); |
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buffer_free(&b); |
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/* try the key */ |
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key_sign(key, &sig, &slen, data, sizeof(data)); |
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key_verify(key, sig, slen, data, sizeof(data)); |
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xfree(sig); |
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return key; |
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} |
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static int |
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get_line(FILE *fp, char *line, size_t len) |
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{ |
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int c; |
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size_t pos = 0; |
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line[0] = '\0'; |
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while ((c = fgetc(fp)) != EOF) { |
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if (pos >= len - 1) { |
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fprintf(stderr, "input line too long.\n"); |
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exit(1); |
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} |
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switch (c) { |
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case '\r': |
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c = fgetc(fp); |
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if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) { |
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fprintf(stderr, "unget: %s\n", strerror(errno)); |
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exit(1); |
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} |
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return pos; |
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case '\n': |
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return pos; |
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} |
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line[pos++] = c; |
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line[pos] = '\0'; |
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} |
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/* We reached EOF */ |
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return -1; |
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} |
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static void |
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do_convert_from_ssh2(struct passwd *pw) |
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{ |
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Key *k; |
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int blen; |
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u_int len; |
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char line[1024]; |
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u_char blob[8096]; |
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char encoded[8096]; |
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struct stat st; |
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int escaped = 0, private = 0, ok; |
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FILE *fp; |
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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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fp = fopen(identity_file, "r"); |
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if (fp == NULL) { |
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perror(identity_file); |
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exit(1); |
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} |
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encoded[0] = '\0'; |
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while ((blen = get_line(fp, line, sizeof(line))) != -1) { |
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if (line[blen - 1] == '\\') |
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escaped++; |
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if (strncmp(line, "----", 4) == 0 || |
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strstr(line, ": ") != NULL) { |
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if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) |
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private = 1; |
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if (strstr(line, " END ") != NULL) { |
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break; |
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} |
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/* fprintf(stderr, "ignore: %s", line); */ |
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continue; |
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} |
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if (escaped) { |
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escaped--; |
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/* fprintf(stderr, "escaped: %s", line); */ |
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continue; |
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} |
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strlcat(encoded, line, sizeof(encoded)); |
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} |
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len = strlen(encoded); |
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if (((len % 4) == 3) && |
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(encoded[len-1] == '=') && |
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(encoded[len-2] == '=') && |
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(encoded[len-3] == '=')) |
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encoded[len-3] = '\0'; |
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blen = uudecode(encoded, blob, sizeof(blob)); |
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if (blen < 0) { |
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fprintf(stderr, "uudecode failed.\n"); |
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exit(1); |
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} |
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k = private ? |
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do_convert_private_ssh2_from_blob(blob, blen) : |
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key_from_blob(blob, blen); |
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if (k == NULL) { |
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fprintf(stderr, "decode blob failed.\n"); |
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exit(1); |
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} |
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ok = private ? |
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(k->type == KEY_DSA ? |
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PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) : |
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PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) : |
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key_write(k, stdout); |
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if (!ok) { |
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fprintf(stderr, "key write failed\n"); |
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exit(1); |
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} |
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key_free(k); |
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if (!private) |
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fprintf(stdout, "\n"); |
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fclose(fp); |
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exit(0); |
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} |
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static void |
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do_print_public(struct passwd *pw) |
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{ |
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Key *prv; |
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struct stat st; |
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|
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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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prv = load_identity(identity_file); |
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if (prv == NULL) { |
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fprintf(stderr, "load failed\n"); |
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exit(1); |
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} |
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if (!key_write(prv, stdout)) |
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fprintf(stderr, "key_write failed"); |
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key_free(prv); |
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fprintf(stdout, "\n"); |
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exit(0); |
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} |
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static void |
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do_download(struct passwd *pw, char *pkcs11provider) |
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{ |
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#ifdef ENABLE_PKCS11 |
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Key **keys = NULL; |
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int i, nkeys; |
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pkcs11_init(0); |
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nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys); |
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if (nkeys <= 0) |
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fatal("cannot read public key from pkcs11"); |
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for (i = 0; i < nkeys; i++) { |
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key_write(keys[i], stdout); |
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key_free(keys[i]); |
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fprintf(stdout, "\n"); |
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} |
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xfree(keys); |
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pkcs11_terminate(); |
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exit(0); |
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#else |
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fatal("no pkcs11 support"); |
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#endif /* ENABLE_PKCS11 */ |
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} |
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static void |
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do_fingerprint(struct passwd *pw) |
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{ |
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FILE *f; |
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Key *public; |
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char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra; |
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int i, skip = 0, num = 0, invalid = 1; |
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enum fp_rep rep; |
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enum fp_type fptype; |
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struct stat st; |
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fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; |
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rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; |
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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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fp = key_fingerprint(public, fptype, rep); |
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ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART); |
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printf("%u %s %s (%s)\n", key_size(public), fp, comment, |
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key_type(public)); |
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if (log_level >= SYSLOG_LEVEL_VERBOSE) |
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printf("%s\n", ra); |
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key_free(public); |
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xfree(comment); |
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xfree(ra); |
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xfree(fp); |
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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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comment = NULL; |
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} |
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f = fopen(identity_file, "r"); |
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if (f != NULL) { |
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while (fgets(line, sizeof(line), f)) { |
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if ((cp = strchr(line, '\n')) == NULL) { |
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error("line %d too long: %.40s...", |
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num + 1, line); |
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skip = 1; |
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continue; |
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} |
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num++; |
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if (skip) { |
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skip = 0; |
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continue; |
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} |
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*cp = '\0'; |
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|
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/* Skip leading whitespace, empty and comment lines. */ |
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for (cp = line; *cp == ' ' || *cp == '\t'; cp++) |
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; |
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if (!*cp || *cp == '\n' || *cp == '#') |
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continue; |
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i = strtol(cp, &ep, 10); |
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if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) { |
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int quoted = 0; |
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comment = cp; |
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for (; *cp && (quoted || (*cp != ' ' && |
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*cp != '\t')); cp++) { |
|
if (*cp == '\\' && cp[1] == '"') |
|
cp++; /* Skip both */ |
|
else if (*cp == '"') |
|
quoted = !quoted; |
|
} |
|
if (!*cp) |
|
continue; |
|
*cp++ = '\0'; |
|
} |
|
ep = cp; |
|
public = key_new(KEY_RSA1); |
|
if (key_read(public, &cp) != 1) { |
|
cp = ep; |
|
key_free(public); |
|
public = key_new(KEY_UNSPEC); |
|
if (key_read(public, &cp) != 1) { |
|
key_free(public); |
|
continue; |
|
} |
|
} |
|
comment = *cp ? cp : comment; |
|
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, |
|
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; |
|
} |
|
fclose(f); |
|
} |
|
if (invalid) { |
|
printf("%s is not a public key file.\n", identity_file); |
|
exit(1); |
|
} |
|
exit(0); |
|
} |
|
|
|
static void |
|
print_host(FILE *f, const char *name, Key *public, int hash) |
|
{ |
|
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 |
|
do_known_hosts(struct passwd *pw, const char *name) |
|
{ |
|
FILE *in, *out = stdout; |
|
Key *public; |
|
char *cp, *cp2, *kp, *kp2; |
|
char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN]; |
|
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); |
|
if (strlcpy(identity_file, cp, sizeof(identity_file)) >= |
|
sizeof(identity_file)) |
|
fatal("Specified known hosts path too long"); |
|
xfree(cp); |
|
have_identity = 1; |
|
} |
|
if ((in = fopen(identity_file, "r")) == NULL) |
|
fatal("fopen: %s", strerror(errno)); |
|
|
|
/* |
|
* Find hosts goes to stdout, hash and deletions happen in-place |
|
* A corner case is ssh-keygen -HF foo, which should go to stdout |
|
*/ |
|
if (!find_host && (hash_hosts || delete_host)) { |
|
if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) || |
|
strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) || |
|
strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) || |
|
strlcat(old, ".old", sizeof(old)) >= sizeof(old)) |
|
fatal("known_hosts path too long"); |
|
umask(077); |
|
if ((c = mkstemp(tmp)) == -1) |
|
fatal("mkstemp: %s", strerror(errno)); |
|
if ((out = fdopen(c, "w")) == NULL) { |
|
c = errno; |
|
unlink(tmp); |
|
fatal("fdopen: %s", strerror(c)); |
|
} |
|
inplace = 1; |
|
} |
|
|
|
while (fgets(line, sizeof(line), in)) { |
|
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; |
|
} |
|
*cp = '\0'; |
|
|
|
/* Skip leading whitespace, empty and comment lines. */ |
|
for (cp = line; *cp == ' ' || *cp == '\t'; cp++) |
|
; |
|
if (!*cp || *cp == '\n' || *cp == '#') { |
|
if (inplace) |
|
fprintf(out, "%s\n", cp); |
|
continue; |
|
} |
|
/* Find the end of the host name portion. */ |
|
for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++) |
|
; |
|
if (*kp == '\0' || *(kp + 1) == '\0') { |
|
error("line %d missing key: %.40s...", |
|
num, line); |
|
invalid = 1; |
|
continue; |
|
} |
|
*kp++ = '\0'; |
|
kp2 = kp; |
|
|
|
public = key_new(KEY_RSA1); |
|
if (key_read(public, &kp) != 1) { |
|
kp = kp2; |
|
key_free(public); |
|
public = key_new(KEY_UNSPEC); |
|
if (key_read(public, &kp) != 1) { |
|
error("line %d invalid key: %.40s...", |
|
num, line); |
|
key_free(public); |
|
invalid = 1; |
|
continue; |
|
} |
|
} |
|
|
|
if (*cp == HASH_DELIM) { |
|
if (find_host || delete_host) { |
|
cp2 = host_hash(name, cp, strlen(cp)); |
|
if (cp2 == NULL) { |
|
error("line %d: invalid hashed " |
|
"name: %.64s...", num, line); |
|
invalid = 1; |
|
continue; |
|
} |
|
c = (strcmp(cp2, cp) == 0); |
|
if (find_host && c) { |
|
printf("# Host %s found: " |
|
"line %d type %s\n", name, |
|
num, key_type(public)); |
|
print_host(out, cp, public, 0); |
|
} |
|
if (delete_host && !c) |
|
print_host(out, cp, public, 0); |
|
} else if (hash_hosts) |
|
print_host(out, cp, public, 0); |
|
} else { |
|
if (find_host || delete_host) { |
|
c = (match_hostname(name, cp, |
|
strlen(cp)) == 1); |
|
if (find_host && c) { |
|
printf("# Host %s found: " |
|
"line %d type %s\n", name, |
|
num, key_type(public)); |
|
print_host(out, name, public, |
|
hash_hosts); |
|
} |
|
if (delete_host && !c) |
|
print_host(out, cp, public, 0); |
|
} else if (hash_hosts) { |
|
for (cp2 = strsep(&cp, ","); |
|
cp2 != NULL && *cp2 != '\0'; |
|
cp2 = strsep(&cp, ",")) { |
|
if (strcspn(cp2, "*?!") != strlen(cp2)) |
|
fprintf(stderr, "Warning: " |
|
"ignoring host name with " |
|
"metacharacters: %.64s\n", |
|
cp2); |
|
else |
|
print_host(out, cp2, public, 1); |
|
} |
|
has_unhashed = 1; |
|
} |
|
} |
|
key_free(public); |
|
} |
|
fclose(in); |
|
|
|
if (invalid) { |
|
fprintf(stderr, "%s is not a valid known_hosts file.\n", |
|
identity_file); |
|
if (inplace) { |
|
fprintf(stderr, "Not replacing existing known_hosts " |
|
"file because of errors\n"); |
|
fclose(out); |
|
unlink(tmp); |
|
} |
|
exit(1); |
|
} |
|
|
|
if (inplace) { |
|
fclose(out); |
|
|
|
/* Backup existing file */ |
|
if (unlink(old) == -1 && errno != ENOENT) |
|
fatal("unlink %.100s: %s", old, strerror(errno)); |
|
if (link(identity_file, old) == -1) |
|
fatal("link %.100s to %.100s: %s", identity_file, old, |
|
strerror(errno)); |
|
/* Move new one into place */ |
|
if (rename(tmp, identity_file) == -1) { |
|
error("rename\"%s\" to \"%s\": %s", tmp, identity_file, |
|
strerror(errno)); |
|
unlink(tmp); |
|
unlink(old); |
|
exit(1); |
|
} |
|
|
|
fprintf(stderr, "%s updated.\n", identity_file); |
|
fprintf(stderr, "Original contents retained as %s\n", old); |
|
if (has_unhashed) { |
|
fprintf(stderr, "WARNING: %s contains unhashed " |
|
"entries\n", old); |
|
fprintf(stderr, "Delete this file to ensure privacy " |
|
"of hostnames\n"); |
|
} |
|
} |
|
|
|
exit(0); |
|
} |
|
|
|
/* |
|
* Perform changing a passphrase. The argument is the passwd structure |
|
* for the current user. |
|
*/ |
|
static void |
do_change_passphrase(struct passwd *pw) |
do_change_passphrase(struct passwd *pw) |
{ |
{ |
char *file, *comment; |
char *comment; |
char *old_passphrase, *passphrase1, *passphrase2; |
char *old_passphrase, *passphrase1, *passphrase2; |
struct stat st; |
struct stat st; |
RSA *private_key; |
Key *private; |
|
|
file = get_filename(pw, "Enter file in which the key is"); |
if (!have_identity) |
/* Check if the file exists. */ |
ask_filename(pw, "Enter file in which the key is"); |
if (stat(file, &st) < 0) |
if (stat(identity_file, &st) < 0) { |
{ |
perror(identity_file); |
perror(file); |
exit(1); |
exit(1); |
} |
} |
/* Try to load the file with empty passphrase. */ |
|
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. */ |
if (identity_passphrase) |
public_key = RSA_new(); |
old_passphrase = xstrdup(identity_passphrase); |
if (!load_public_key(file, public_key, NULL)) |
else |
{ |
old_passphrase = |
printf("%s is not a valid key file.\n", file); |
read_passphrase("Enter old passphrase: ", |
exit(1); |
RP_ALLOW_STDIN); |
} |
private = key_load_private(identity_file, old_passphrase, |
/* Clear the public key since we are just about to load the whole file. */ |
&comment); |
RSA_free(public_key); |
memset(old_passphrase, 0, strlen(old_passphrase)); |
|
xfree(old_passphrase); |
|
if (private == NULL) { |
|
printf("Bad passphrase.\n"); |
|
exit(1); |
|
} |
|
} |
|
printf("Key has comment '%s'\n", comment); |
|
|
/* Try to load the file with empty passphrase. */ |
/* Ask the new passphrase (twice). */ |
private_key = RSA_new(); |
if (identity_new_passphrase) { |
if (!load_private_key(file, "", private_key, &comment)) { |
passphrase1 = xstrdup(identity_new_passphrase); |
/* Read passphrase from the user. */ |
passphrase2 = NULL; |
if (identity_passphrase) |
} else { |
old_passphrase = xstrdup(identity_passphrase); |
passphrase1 = |
else |
read_passphrase("Enter new passphrase (empty for no " |
old_passphrase = read_passphrase("Enter old passphrase: ", 1); |
"passphrase): ", RP_ALLOW_STDIN); |
/* Try to load using the passphrase. */ |
passphrase2 = read_passphrase("Enter same passphrase again: ", |
if (!load_private_key(file, old_passphrase, private_key, &comment)) |
RP_ALLOW_STDIN); |
{ |
|
memset(old_passphrase, 0, strlen(old_passphrase)); |
|
xfree(old_passphrase); |
|
printf("Bad passphrase.\n"); |
|
exit(1); |
|
} |
|
/* Destroy the passphrase. */ |
|
memset(old_passphrase, 0, strlen(old_passphrase)); |
|
xfree(old_passphrase); |
|
} |
|
printf("Key has comment '%s'\n", comment); |
|
|
|
/* Ask the new passphrase (twice). */ |
|
if (identity_new_passphrase) |
|
{ |
|
passphrase1 = xstrdup(identity_new_passphrase); |
|
passphrase2 = NULL; |
|
} |
|
else |
|
{ |
|
passphrase1 = |
|
read_passphrase("Enter new passphrase (empty for no passphrase): ", 1); |
|
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
|
|
|
/* Verify that they are the same. */ |
/* Verify that they are the same. */ |
if (strcmp(passphrase1, passphrase2) != 0) |
if (strcmp(passphrase1, passphrase2) != 0) { |
{ |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase2, 0, strlen(passphrase2)); |
memset(passphrase2, 0, strlen(passphrase2)); |
xfree(passphrase1); |
xfree(passphrase1); |
xfree(passphrase2); |
xfree(passphrase2); |
printf("Pass phrases do not match. Try again.\n"); |
printf("Pass phrases do not match. Try again.\n"); |
exit(1); |
exit(1); |
} |
|
/* Destroy the other copy. */ |
|
memset(passphrase2, 0, strlen(passphrase2)); |
|
xfree(passphrase2); |
} |
} |
/* Destroy the other copy. */ |
|
memset(passphrase2, 0, strlen(passphrase2)); |
|
xfree(passphrase2); |
|
} |
|
|
|
/* Save the file using the new passphrase. */ |
/* Save the file using the new passphrase. */ |
if (!save_private_key(file, passphrase1, private_key, comment)) |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
{ |
printf("Saving the key failed: %s.\n", identity_file); |
printf("Saving the key failed: %s: %s.\n", |
memset(passphrase1, 0, strlen(passphrase1)); |
file, strerror(errno)); |
xfree(passphrase1); |
memset(passphrase1, 0, strlen(passphrase1)); |
key_free(private); |
xfree(passphrase1); |
xfree(comment); |
RSA_free(private_key); |
exit(1); |
xfree(comment); |
} |
exit(1); |
/* Destroy the passphrase and the copy of the key in memory. */ |
} |
memset(passphrase1, 0, strlen(passphrase1)); |
/* Destroy the passphrase and the copy of the key in memory. */ |
xfree(passphrase1); |
memset(passphrase1, 0, strlen(passphrase1)); |
key_free(private); /* Destroys contents */ |
xfree(passphrase1); |
xfree(comment); |
RSA_free(private_key); /* Destroys contents */ |
|
xfree(comment); |
|
|
|
printf("Your identification has been saved with the new passphrase.\n"); |
printf("Your identification has been saved with the new passphrase.\n"); |
exit(0); |
exit(0); |
} |
} |
|
|
/* Change the comment of a private key file. */ |
/* |
|
* Print the SSHFP RR. |
|
*/ |
|
static int |
|
do_print_resource_record(struct passwd *pw, char *fname, char *hname) |
|
{ |
|
Key *public; |
|
char *comment = NULL; |
|
struct stat st; |
|
|
void |
if (fname == NULL) |
|
ask_filename(pw, "Enter file in which the key is"); |
|
if (stat(fname, &st) < 0) { |
|
if (errno == ENOENT) |
|
return 0; |
|
perror(fname); |
|
exit(1); |
|
} |
|
public = key_load_public(fname, &comment); |
|
if (public != NULL) { |
|
export_dns_rr(hname, public, stdout, print_generic); |
|
key_free(public); |
|
xfree(comment); |
|
return 1; |
|
} |
|
if (comment) |
|
xfree(comment); |
|
|
|
printf("failed to read v2 public key from %s.\n", fname); |
|
exit(1); |
|
} |
|
|
|
/* |
|
* Change the comment of a private key file. |
|
*/ |
|
static void |
do_change_comment(struct passwd *pw) |
do_change_comment(struct passwd *pw) |
{ |
{ |
char new_comment[1024], *file, *comment; |
char new_comment[1024], *comment, *passphrase; |
RSA *private_key; |
Key *private; |
char *passphrase; |
Key *public; |
struct stat st; |
struct stat st; |
FILE *f; |
FILE *f; |
char *tmpbuf; |
int fd; |
|
|
file = get_filename(pw, "Enter file in which the key is"); |
if (!have_identity) |
/* Check if the file exists. */ |
ask_filename(pw, "Enter file in which the key is"); |
if (stat(file, &st) < 0) |
if (stat(identity_file, &st) < 0) { |
{ |
perror(identity_file); |
perror(file); |
exit(1); |
exit(1); |
} |
} |
private = key_load_private(identity_file, "", &comment); |
|
if (private == NULL) { |
/* Try to load the public key from the file the verify that it is |
if (identity_passphrase) |
readable and of the proper format. */ |
passphrase = xstrdup(identity_passphrase); |
public_key = RSA_new(); |
else if (identity_new_passphrase) |
if (!load_public_key(file, public_key, NULL)) |
passphrase = xstrdup(identity_new_passphrase); |
{ |
else |
printf("%s is not a valid key file.\n", file); |
passphrase = read_passphrase("Enter passphrase: ", |
exit(1); |
RP_ALLOW_STDIN); |
} |
/* Try to load using the passphrase. */ |
|
private = key_load_private(identity_file, passphrase, &comment); |
|
if (private == NULL) { |
|
memset(passphrase, 0, strlen(passphrase)); |
|
xfree(passphrase); |
|
printf("Bad passphrase.\n"); |
|
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); |
|
|
private_key = RSA_new(); |
if (identity_comment) { |
/* Try to load the file with empty passphrase. */ |
strlcpy(new_comment, identity_comment, sizeof(new_comment)); |
if (load_private_key(file, "", private_key, &comment)) |
} else { |
passphrase = xstrdup(""); |
printf("Enter new comment: "); |
else |
fflush(stdout); |
{ |
if (!fgets(new_comment, sizeof(new_comment), stdin)) { |
/* Read passphrase from the user. */ |
memset(passphrase, 0, strlen(passphrase)); |
if (identity_passphrase) |
key_free(private); |
passphrase = xstrdup(identity_passphrase); |
exit(1); |
else |
} |
if (identity_new_passphrase) |
new_comment[strcspn(new_comment, "\n")] = '\0'; |
passphrase = xstrdup(identity_new_passphrase); |
|
else |
|
passphrase = read_passphrase("Enter passphrase: ", 1); |
|
/* Try to load using the passphrase. */ |
|
if (!load_private_key(file, passphrase, private_key, &comment)) |
|
{ |
|
memset(passphrase, 0, strlen(passphrase)); |
|
xfree(passphrase); |
|
printf("Bad passphrase.\n"); |
|
exit(1); |
|
} |
} |
} |
|
printf("Key now has comment '%s'\n", comment); |
|
|
|
if (identity_comment) |
/* Save the file using the new passphrase. */ |
{ |
if (!key_save_private(private, identity_file, passphrase, new_comment)) { |
strlcpy(new_comment, identity_comment, sizeof(new_comment)); |
printf("Saving the key failed: %s.\n", identity_file); |
} |
memset(passphrase, 0, strlen(passphrase)); |
else |
xfree(passphrase); |
{ |
key_free(private); |
printf("Enter new comment: "); |
xfree(comment); |
fflush(stdout); |
exit(1); |
if (!fgets(new_comment, sizeof(new_comment), stdin)) |
|
{ |
|
memset(passphrase, 0, strlen(passphrase)); |
|
RSA_free(private_key); |
|
exit(1); |
|
} |
} |
|
memset(passphrase, 0, strlen(passphrase)); |
/* Remove terminating newline from comment. */ |
xfree(passphrase); |
if (strchr(new_comment, '\n')) |
public = key_from_private(private); |
*strchr(new_comment, '\n') = 0; |
key_free(private); |
} |
|
|
|
/* Save the file using the new passphrase. */ |
|
if (!save_private_key(file, passphrase, private_key, new_comment)) |
|
{ |
|
printf("Saving the key failed: %s: %s.\n", |
|
file, strerror(errno)); |
|
memset(passphrase, 0, strlen(passphrase)); |
|
xfree(passphrase); |
|
RSA_free(private_key); |
|
xfree(comment); |
|
exit(1); |
|
} |
|
|
|
/* Destroy the passphrase and the private key in memory. */ |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
memset(passphrase, 0, strlen(passphrase)); |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
xfree(passphrase); |
if (fd == -1) { |
RSA_free(private_key); |
printf("Could not save your public key in %s\n", identity_file); |
|
exit(1); |
|
} |
|
f = fdopen(fd, "w"); |
|
if (f == NULL) { |
|
printf("fdopen %s failed\n", identity_file); |
|
exit(1); |
|
} |
|
if (!key_write(public, f)) |
|
fprintf(stderr, "write key failed\n"); |
|
key_free(public); |
|
fprintf(f, " %s\n", new_comment); |
|
fclose(f); |
|
|
/* Save the public key in text format in a file with the same name but |
xfree(comment); |
.pub appended. */ |
|
strcat(file, ".pub"); |
|
f = fopen(file, "w"); |
|
if (!f) |
|
{ |
|
printf("Could not save your public key in %s\n", 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); |
|
fclose(f); |
|
|
|
xfree(comment); |
printf("The comment in your key file has been changed.\n"); |
|
exit(0); |
printf("The comment in your key file has been changed.\n"); |
|
exit(0); |
|
} |
} |
|
|
/* Main program for key management. */ |
static void |
|
usage(void) |
|
{ |
|
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"); |
|
fprintf(stderr, " -b bits Number of bits in the key to create.\n"); |
|
fprintf(stderr, " -C comment Provide new comment.\n"); |
|
fprintf(stderr, " -c Change comment in private and public key files.\n"); |
|
#ifdef ENABLE_PKCS11 |
|
fprintf(stderr, " -D pkcs11 Download public key from pkcs11 token.\n"); |
|
#endif |
|
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 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"); |
|
fprintf(stderr, " -P phrase Provide old passphrase.\n"); |
|
fprintf(stderr, " -p Change passphrase of private key file.\n"); |
|
fprintf(stderr, " -q Quiet.\n"); |
|
fprintf(stderr, " -R hostname Remove host from known_hosts file.\n"); |
|
fprintf(stderr, " -r hostname Print DNS resource record.\n"); |
|
fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n"); |
|
fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n"); |
|
fprintf(stderr, " -t type Specify type of key to create.\n"); |
|
fprintf(stderr, " -v Verbose.\n"); |
|
fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n"); |
|
fprintf(stderr, " -y Read private key file and print public key.\n"); |
|
|
|
exit(1); |
|
} |
|
|
|
/* |
|
* Main program for key management. |
|
*/ |
int |
int |
main(int ac, char **av) |
main(int argc, char **argv) |
{ |
{ |
char buf[16384], buf2[1024], *passphrase1, *passphrase2; |
char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2; |
struct passwd *pw; |
char out_file[MAXPATHLEN], *pkcs11provider = NULL; |
char *file, *tmpbuf; |
char *rr_hostname = NULL; |
int opt; |
Key *private, *public; |
struct stat st; |
struct passwd *pw; |
FILE *f; |
struct stat st; |
char hostname[MAXHOSTNAMELEN]; |
int opt, type, fd; |
extern int optind; |
u_int32_t memory = 0, generator_wanted = 0, trials = 100; |
extern char *optarg; |
int do_gen_candidates = 0, do_screen_candidates = 0; |
|
BIGNUM *start = NULL; |
|
FILE *f; |
|
const char *errstr; |
|
|
/* check if RSA support exists */ |
extern int optind; |
if (rsa_alive() == 0) { |
extern char *optarg; |
extern char *__progname; |
|
|
|
fprintf(stderr, |
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ |
"%s: no RSA support in libssl and libcrypto. See ssl(8).\n", |
sanitise_stdfd(); |
__progname); |
|
exit(1); |
|
} |
|
|
|
/* Get user\'s passwd structure. We need this for the home directory. */ |
SSLeay_add_all_algorithms(); |
pw = getpwuid(getuid()); |
log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1); |
if (!pw) |
|
{ |
|
printf("You don't exist, go away!\n"); |
|
exit(1); |
|
} |
|
|
|
/* Create ~/.ssh directory if it doesn\'t already exist. */ |
/* we need this for the home * directory. */ |
snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_USER_DIR); |
pw = getpwuid(getuid()); |
if (stat(buf, &st) < 0) |
if (!pw) { |
if (mkdir(buf, 0755) < 0) |
printf("You don't exist, go away!\n"); |
error("Could not create directory '%s'.", buf); |
exit(1); |
|
} |
|
if (gethostname(hostname, sizeof(hostname)) < 0) { |
|
perror("gethostname"); |
|
exit(1); |
|
} |
|
|
/* Parse command line arguments. */ |
while ((opt = getopt(argc, argv, |
while ((opt = getopt(ac, av, "qpcb:f:P:N:C:")) != EOF) |
"degiqpclBHvxXyF:b:f:t:D:P:N:C:r:g:R:T:G:M:S:a:W:")) != -1) { |
{ |
switch (opt) { |
switch (opt) |
case 'b': |
{ |
bits = (u_int32_t)strtonum(optarg, 768, 32768, &errstr); |
case 'b': |
if (errstr) |
bits = atoi(optarg); |
fatal("Bits has bad value %s (%s)", |
if (bits < 512 || bits > 32768) |
optarg, errstr); |
{ |
break; |
printf("Bits has bad value.\n"); |
case 'F': |
exit(1); |
find_host = 1; |
} |
rr_hostname = optarg; |
break; |
break; |
|
case 'H': |
|
hash_hosts = 1; |
|
break; |
|
case 'R': |
|
delete_host = 1; |
|
rr_hostname = optarg; |
|
break; |
|
case 'l': |
|
print_fingerprint = 1; |
|
break; |
|
case 'B': |
|
print_bubblebabble = 1; |
|
break; |
|
case 'p': |
|
change_passphrase = 1; |
|
break; |
|
case 'c': |
|
change_comment = 1; |
|
break; |
|
case 'f': |
|
if (strlcpy(identity_file, optarg, sizeof(identity_file)) >= |
|
sizeof(identity_file)) |
|
fatal("Identity filename too long"); |
|
have_identity = 1; |
|
break; |
|
case 'g': |
|
print_generic = 1; |
|
break; |
|
case 'P': |
|
identity_passphrase = optarg; |
|
break; |
|
case 'N': |
|
identity_new_passphrase = optarg; |
|
break; |
|
case 'C': |
|
identity_comment = optarg; |
|
break; |
|
case 'q': |
|
quiet = 1; |
|
break; |
|
case 'e': |
|
case 'x': |
|
/* export key */ |
|
convert_to_ssh2 = 1; |
|
break; |
|
case 'i': |
|
case 'X': |
|
/* import key */ |
|
convert_from_ssh2 = 1; |
|
break; |
|
case 'y': |
|
print_public = 1; |
|
break; |
|
case 'd': |
|
key_type_name = "dsa"; |
|
break; |
|
case 't': |
|
key_type_name = optarg; |
|
break; |
|
case 'D': |
|
pkcs11provider = 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': |
|
rr_hostname = optarg; |
|
break; |
|
case 'W': |
|
generator_wanted = (u_int32_t)strtonum(optarg, 1, |
|
UINT_MAX, &errstr); |
|
if (errstr) |
|
fatal("Desired generator has bad value: %s (%s)", |
|
optarg, errstr); |
|
break; |
|
case 'a': |
|
trials = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr); |
|
if (errstr) |
|
fatal("Invalid number of trials: %s (%s)", |
|
optarg, errstr); |
|
break; |
|
case 'M': |
|
memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr); |
|
if (errstr) { |
|
fatal("Memory limit is %s: %s", errstr, optarg); |
|
} |
|
break; |
|
case 'G': |
|
do_gen_candidates = 1; |
|
if (strlcpy(out_file, optarg, sizeof(out_file)) >= |
|
sizeof(out_file)) |
|
fatal("Output filename too long"); |
|
break; |
|
case 'T': |
|
do_screen_candidates = 1; |
|
if (strlcpy(out_file, optarg, sizeof(out_file)) >= |
|
sizeof(out_file)) |
|
fatal("Output filename too long"); |
|
break; |
|
case 'S': |
|
/* XXX - also compare length against bits */ |
|
if (BN_hex2bn(&start, optarg) == 0) |
|
fatal("Invalid start point."); |
|
break; |
|
case '?': |
|
default: |
|
usage(); |
|
} |
|
} |
|
|
case 'p': |
/* reinit */ |
change_passphrase = 1; |
log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1); |
break; |
|
|
|
case 'c': |
if (optind < argc) { |
change_comment = 1; |
printf("Too many arguments.\n"); |
break; |
usage(); |
|
} |
|
if (change_passphrase && change_comment) { |
|
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) |
|
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); |
|
if (rr_hostname != NULL) { |
|
unsigned int n = 0; |
|
|
case 'f': |
if (have_identity) { |
identity_file = optarg; |
n = do_print_resource_record(pw, |
break; |
identity_file, rr_hostname); |
|
if (n == 0) { |
case 'P': |
perror(identity_file); |
identity_passphrase = optarg; |
exit(1); |
break; |
} |
|
exit(0); |
|
} else { |
|
|
case 'N': |
n += do_print_resource_record(pw, |
identity_new_passphrase = optarg; |
_PATH_HOST_RSA_KEY_FILE, rr_hostname); |
break; |
n += do_print_resource_record(pw, |
|
_PATH_HOST_DSA_KEY_FILE, rr_hostname); |
|
|
case 'C': |
if (n == 0) |
identity_comment = optarg; |
fatal("no keys found."); |
break; |
exit(0); |
|
} |
|
} |
|
if (pkcs11provider != NULL) |
|
do_download(pw, pkcs11provider); |
|
|
case 'q': |
if (do_gen_candidates) { |
quiet = 1; |
FILE *out = fopen(out_file, "w"); |
break; |
|
|
|
case '?': |
if (out == NULL) { |
default: |
error("Couldn't open modulus candidate file \"%s\": %s", |
printf("ssh-keygen version %s\n", SSH_VERSION); |
out_file, strerror(errno)); |
printf("Usage: %s [-b bits] [-p] [-c] [-f file] [-P pass] [-N new-pass] [-C comment]\n", av[0]); |
return (1); |
exit(1); |
} |
|
if (bits == 0) |
|
bits = DEFAULT_BITS; |
|
if (gen_candidates(out, memory, bits, start) != 0) |
|
fatal("modulus candidate generation failed"); |
|
|
|
return (0); |
} |
} |
} |
|
if (optind < ac) |
|
{ |
|
printf("Too many arguments.\n"); |
|
exit(1); |
|
} |
|
if (change_passphrase && change_comment) |
|
{ |
|
printf("Can only have one of -p and -c.\n"); |
|
exit(1); |
|
} |
|
|
|
/* If the user requested to change the passphrase, do it now. This |
if (do_screen_candidates) { |
function never returns. */ |
FILE *in; |
if (change_passphrase) |
FILE *out = fopen(out_file, "w"); |
do_change_passphrase(pw); |
|
|
|
/* If the user requested to change the comment, do it now. This function |
if (have_identity && strcmp(identity_file, "-") != 0) { |
never returns. */ |
if ((in = fopen(identity_file, "r")) == NULL) { |
if (change_comment) |
fatal("Couldn't open modulus candidate " |
do_change_comment(pw); |
"file \"%s\": %s", identity_file, |
|
strerror(errno)); |
|
} |
|
} else |
|
in = stdin; |
|
|
arc4random_stir(); |
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"); |
|
return (0); |
|
} |
|
|
if (quiet) |
arc4random_stir(); |
rsa_set_verbose(0); |
|
|
|
/* Generate the rsa key pair. */ |
if (key_type_name == NULL) |
private_key = RSA_new(); |
key_type_name = "rsa"; |
public_key = RSA_new(); |
|
rsa_generate_key(private_key, public_key, bits); |
|
|
|
ask_file_again: |
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 (bits == 0) |
|
bits = (type == KEY_DSA) ? DEFAULT_BITS_DSA : DEFAULT_BITS; |
|
if (type == KEY_DSA && bits != 1024) |
|
fatal("DSA keys must be 1024 bits"); |
|
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\n"); |
|
exit(1); |
|
} |
|
public = key_from_private(private); |
|
|
file = get_filename(pw, "Enter file in which to save the key"); |
if (!have_identity) |
|
ask_filename(pw, "Enter file in which to save the key"); |
|
|
/* If the file aready exists, ask the user to confirm. */ |
/* Create ~/.ssh directory if it doesn't already exist. */ |
if (stat(file, &st) >= 0) |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR); |
{ |
if (strstr(identity_file, dotsshdir) != NULL && |
printf("%s already exists.\n", file); |
stat(dotsshdir, &st) < 0) { |
printf("Overwrite (y/n)? "); |
if (mkdir(dotsshdir, 0700) < 0) |
fflush(stdout); |
error("Could not create directory '%s'.", dotsshdir); |
if (fgets(buf2, sizeof(buf2), stdin) == NULL) |
else if (!quiet) |
exit(1); |
printf("Created directory '%s'.\n", dotsshdir); |
if (buf2[0] != 'y' && buf2[0] != 'Y') |
} |
exit(1); |
/* If the file already exists, ask the user to confirm. */ |
} |
if (stat(identity_file, &st) >= 0) { |
|
char yesno[3]; |
/* Ask for a passphrase (twice). */ |
printf("%s already exists.\n", identity_file); |
if (identity_passphrase) |
printf("Overwrite (y/n)? "); |
passphrase1 = xstrdup(identity_passphrase); |
fflush(stdout); |
else |
if (fgets(yesno, sizeof(yesno), stdin) == NULL) |
if (identity_new_passphrase) |
exit(1); |
passphrase1 = xstrdup(identity_new_passphrase); |
if (yesno[0] != 'y' && yesno[0] != 'Y') |
else |
exit(1); |
{ |
} |
passphrase_again: |
/* Ask for a passphrase (twice). */ |
passphrase1 = |
if (identity_passphrase) |
read_passphrase("Enter passphrase (empty for no passphrase): ", 1); |
passphrase1 = xstrdup(identity_passphrase); |
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
else if (identity_new_passphrase) |
if (strcmp(passphrase1, passphrase2) != 0) |
passphrase1 = xstrdup(identity_new_passphrase); |
{ |
else { |
/* The passphrases do not match. Clear them and retry. */ |
passphrase_again: |
memset(passphrase1, 0, strlen(passphrase1)); |
passphrase1 = |
memset(passphrase2, 0, strlen(passphrase2)); |
read_passphrase("Enter passphrase (empty for no " |
xfree(passphrase1); |
"passphrase): ", RP_ALLOW_STDIN); |
xfree(passphrase2); |
passphrase2 = read_passphrase("Enter same passphrase again: ", |
printf("Passphrases do not match. Try again.\n"); |
RP_ALLOW_STDIN); |
goto passphrase_again; |
if (strcmp(passphrase1, passphrase2) != 0) { |
} |
/* |
/* Clear the other copy of the passphrase. */ |
* The passphrases do not match. Clear them and |
memset(passphrase2, 0, strlen(passphrase2)); |
* retry. |
xfree(passphrase2); |
*/ |
} |
memset(passphrase1, 0, strlen(passphrase1)); |
|
memset(passphrase2, 0, strlen(passphrase2)); |
|
xfree(passphrase1); |
|
xfree(passphrase2); |
|
printf("Passphrases do not match. Try again.\n"); |
|
goto passphrase_again; |
|
} |
|
/* Clear the other copy of the passphrase. */ |
|
memset(passphrase2, 0, strlen(passphrase2)); |
|
xfree(passphrase2); |
|
} |
|
|
/* Create default commend field for the passphrase. The user can later |
if (identity_comment) { |
edit this field. */ |
strlcpy(comment, identity_comment, sizeof(comment)); |
if (identity_comment) |
} else { |
{ |
/* Create default comment field for the passphrase. */ |
strlcpy(buf2, identity_comment, sizeof(buf2)); |
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname); |
} |
|
else |
|
{ |
|
if (gethostname(hostname, sizeof(hostname)) < 0) |
|
{ |
|
perror("gethostname"); |
|
exit(1); |
|
} |
} |
snprintf(buf2, sizeof buf2, "%s@%s", pw->pw_name, hostname); |
|
} |
|
|
|
/* Save the key with the given passphrase and comment. */ |
/* Save the key with the given passphrase and comment. */ |
if (!save_private_key(file, passphrase1, private_key, buf2)) |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
{ |
printf("Saving the key failed: %s.\n", identity_file); |
printf("Saving the key failed: %s: %s.\n", |
memset(passphrase1, 0, strlen(passphrase1)); |
file, strerror(errno)); |
xfree(passphrase1); |
memset(passphrase1, 0, strlen(passphrase1)); |
exit(1); |
xfree(passphrase1); |
} |
xfree(file); |
/* Clear the passphrase. */ |
goto ask_file_again; |
memset(passphrase1, 0, strlen(passphrase1)); |
} |
xfree(passphrase1); |
/* Clear the passphrase. */ |
|
memset(passphrase1, 0, strlen(passphrase1)); |
|
xfree(passphrase1); |
|
|
|
/* Clear the private key and the random number generator. */ |
/* Clear the private key and the random number generator. */ |
RSA_free(private_key); |
key_free(private); |
arc4random_stir(); |
arc4random_stir(); |
|
|
if (!quiet) |
if (!quiet) |
printf("Your identification has been saved in %s.\n", file); |
printf("Your identification has been saved in %s.\n", identity_file); |
|
|
/* Display the public key on the screen. */ |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
if (!quiet) { |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
printf("Your public key is:\n"); |
if (fd == -1) { |
printf("%d ", BN_num_bits(public_key->n)); |
printf("Could not save your public key in %s\n", identity_file); |
tmpbuf = BN_bn2dec(public_key->e); |
exit(1); |
printf("%s ", tmpbuf); |
} |
free(tmpbuf); |
f = fdopen(fd, "w"); |
tmpbuf = BN_bn2dec(public_key->n); |
if (f == NULL) { |
printf("%s %s\n", tmpbuf, buf2); |
printf("fdopen %s failed\n", identity_file); |
free(tmpbuf); |
exit(1); |
} |
} |
|
if (!key_write(public, f)) |
|
fprintf(stderr, "write key failed\n"); |
|
fprintf(f, " %s\n", comment); |
|
fclose(f); |
|
|
/* Save the public key in text format in a file with the same name but |
if (!quiet) { |
.pub appended. */ |
char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX); |
strcat(file, ".pub"); |
char *ra = key_fingerprint(public, SSH_FP_MD5, |
f = fopen(file, "w"); |
SSH_FP_RANDOMART); |
if (!f) |
printf("Your public key has been saved in %s.\n", |
{ |
identity_file); |
printf("Could not save your public key in %s\n", file); |
printf("The key fingerprint is:\n"); |
exit(1); |
printf("%s %s\n", fp, comment); |
} |
printf("The key's randomart image is:\n"); |
fprintf(f, "%d ", BN_num_bits(public_key->n)); |
printf("%s\n", ra); |
tmpbuf = BN_bn2dec(public_key->e); |
xfree(ra); |
fprintf(f, "%s ", tmpbuf); |
xfree(fp); |
free(tmpbuf); |
} |
tmpbuf = BN_bn2dec(public_key->n); |
|
fprintf(f, "%s %s\n", tmpbuf, buf2); |
|
free(tmpbuf); |
|
fclose(f); |
|
|
|
if (!quiet) |
key_free(public); |
printf("Your public key has been saved in %s\n", file); |
exit(0); |
|
|
exit(0); |
|
} |
} |