version 1.19, 2000/04/26 20:56:29 |
version 1.25.2.3, 2000/11/08 21:31:22 |
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* 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 |
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* Identity and host key generation and maintenance. |
* 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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#include "includes.h" |
#include "includes.h" |
RCSID("$Id$"); |
RCSID("$OpenBSD$"); |
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#include <openssl/evp.h> |
#include <openssl/evp.h> |
#include <openssl/pem.h> |
#include <openssl/pem.h> |
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#include "ssh.h" |
#include "ssh.h" |
#include "xmalloc.h" |
#include "xmalloc.h" |
#include "fingerprint.h" |
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#include "key.h" |
#include "key.h" |
#include "rsa.h" |
#include "rsa.h" |
#include "dsa.h" |
#include "dsa.h" |
#include "authfile.h" |
#include "authfile.h" |
#include "uuencode.h" |
#include "uuencode.h" |
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#include "buffer.h" |
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#include "bufaux.h" |
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/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ |
/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ |
int bits = 1024; |
int bits = 1024; |
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{ |
{ |
char buf[1024]; |
char buf[1024]; |
snprintf(identity_file, sizeof(identity_file), "%s/%s", |
snprintf(identity_file, sizeof(identity_file), "%s/%s", |
pw->pw_dir, SSH_CLIENT_IDENTITY); |
pw->pw_dir, |
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dsa_mode ? SSH_CLIENT_ID_DSA: SSH_CLIENT_IDENTITY); |
printf("%s (%s): ", prompt, identity_file); |
printf("%s (%s): ", prompt, identity_file); |
fflush(stdout); |
fflush(stdout); |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
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return success; |
return success; |
} |
} |
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#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 ----" |
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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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void |
void |
do_convert_to_ssh2(struct passwd *pw) |
do_convert_to_ssh2(struct passwd *pw) |
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exit(1); |
exit(1); |
} |
} |
dsa_make_key_blob(k, &blob, &len); |
dsa_make_key_blob(k, &blob, &len); |
fprintf(stdout, SSH_COM_MAGIC_BEGIN "\n"); |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); |
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); |
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xfree(blob); |
exit(0); |
exit(0); |
} |
} |
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void |
void |
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buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
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{ |
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int bits = buffer_get_int(b); |
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int bytes = (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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BN_bin2bn((unsigned char *)buffer_ptr(b), bytes, value); |
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buffer_consume(b, bytes); |
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} |
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Key * |
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do_convert_private_ssh2_from_blob(char *blob, int blen) |
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{ |
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Buffer b; |
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DSA *dsa; |
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Key *key = NULL; |
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int ignore, magic, rlen; |
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char *type, *cipher; |
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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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ignore = 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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ignore = buffer_get_int(&b); |
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ignore = buffer_get_int(&b); |
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ignore = buffer_get_int(&b); |
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xfree(type); |
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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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return NULL; |
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} |
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xfree(cipher); |
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key = key_new(KEY_DSA); |
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dsa = key->dsa; |
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dsa->priv_key = BN_new(); |
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if (dsa->priv_key == NULL) { |
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error("alloc priv_key failed"); |
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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, dsa->p); |
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buffer_get_bignum_bits(&b, dsa->g); |
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buffer_get_bignum_bits(&b, dsa->q); |
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buffer_get_bignum_bits(&b, dsa->pub_key); |
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buffer_get_bignum_bits(&b, dsa->priv_key); |
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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: remaining bytes in key blob %d", rlen); |
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buffer_free(&b); |
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return key; |
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} |
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void |
do_convert_from_ssh2(struct passwd *pw) |
do_convert_from_ssh2(struct passwd *pw) |
{ |
{ |
Key *k; |
Key *k; |
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char blob[8096]; |
char blob[8096]; |
char encoded[8096]; |
char encoded[8096]; |
struct stat st; |
struct stat st; |
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int escaped = 0, private = 0, ok; |
FILE *fp; |
FILE *fp; |
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if (!have_identity) |
if (!have_identity) |
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} |
} |
encoded[0] = '\0'; |
encoded[0] = '\0'; |
while (fgets(line, sizeof(line), fp)) { |
while (fgets(line, sizeof(line), fp)) { |
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if (!(p = strchr(line, '\n'))) { |
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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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if (p > line && p[-1] == '\\') |
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escaped++; |
if (strncmp(line, "----", 4) == 0 || |
if (strncmp(line, "----", 4) == 0 || |
strstr(line, ": ") != NULL) { |
strstr(line, ": ") != NULL) { |
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if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) |
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private = 1; |
fprintf(stderr, "ignore: %s", line); |
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); |
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continue; |
} |
} |
*p = '\0'; |
*p = '\0'; |
strlcat(encoded, line, sizeof(encoded)); |
strlcat(encoded, line, sizeof(encoded)); |
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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"); |
dsa_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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PEM_write_DSAPrivateKey(stdout, k->dsa, 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"); |
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exit(1); |
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} |
key_free(k); |
key_free(k); |
fprintf(stdout, "\n"); |
fprintf(stdout, "\n"); |
fclose(fp); |
fclose(fp); |
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if (!key_write(k, stdout)) |
if (!key_write(k, stdout)) |
fprintf(stderr, "key_write failed"); |
fprintf(stderr, "key_write failed"); |
key_free(k); |
key_free(k); |
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xfree(blob); |
fprintf(stdout, "\n"); |
fprintf(stdout, "\n"); |
exit(0); |
exit(0); |
} |
} |
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void |
void |
do_fingerprint(struct passwd *pw) |
do_fingerprint(struct passwd *pw) |
{ |
{ |
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/* XXX RSA1 only */ |
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FILE *f; |
FILE *f; |
BIGNUM *e, *n; |
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Key *public; |
Key *public; |
char *comment = NULL, *cp, *ep, line[16*1024]; |
char *comment = NULL, *cp, *ep, line[16*1024]; |
int i, skip = 0, num = 1, invalid = 1; |
int i, skip = 0, num = 1, invalid = 1; |
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key_free(public); |
key_free(public); |
exit(0); |
exit(0); |
} |
} |
key_free(public); |
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/* XXX */ |
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f = fopen(identity_file, "r"); |
f = fopen(identity_file, "r"); |
if (f != NULL) { |
if (f != NULL) { |
n = BN_new(); |
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e = BN_new(); |
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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') { |
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*cp++ = '\0'; |
*cp++ = '\0'; |
} |
} |
ep = cp; |
ep = cp; |
if (auth_rsa_read_key(&cp, &ignore, e, n)) { |
if (auth_rsa_read_key(&cp, &ignore, public->rsa->e, public->rsa->n)) { |
invalid = 0; |
invalid = 0; |
comment = *cp ? cp : comment; |
comment = *cp ? cp : comment; |
printf("%d %s %s\n", BN_num_bits(n), |
printf("%d %s %s\n", key_size(public), |
fingerprint(e, n), |
key_fingerprint(public), |
comment ? comment : "no comment"); |
comment ? comment : "no comment"); |
} |
} |
} |
} |
BN_free(e); |
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BN_free(n); |
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fclose(f); |
fclose(f); |
} |
} |
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key_free(public); |
if (invalid) { |
if (invalid) { |
printf("%s is not a valid key file.\n", identity_file); |
printf("%s is not a valid key file.\n", identity_file); |
exit(1); |
exit(1); |
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void |
void |
usage(void) |
usage(void) |
{ |
{ |
printf("ssh-keygen version %s\n", SSH_VERSION); |
printf("Usage: %s [-lpqxXydc] [-b bits] [-f file] [-C comment] [-N new-pass] [-P pass]\n", __progname); |
printf("Usage: %s [-b bits] [-p] [-c] [-l] [-x] [-X] [-y] [-f file] [-P pass] [-N new-pass] [-C comment]\n", __progname); |
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exit(1); |
exit(1); |
} |
} |
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extern int optind; |
extern int optind; |
extern char *optarg; |
extern char *optarg; |
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OpenSSL_add_all_algorithms(); |
SSLeay_add_all_algorithms(); |
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/* we need this for the home * directory. */ |
/* we need this for the home * directory. */ |
pw = getpwuid(getuid()); |
pw = getpwuid(getuid()); |
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exit(1); |
exit(1); |
} |
} |
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while ((opt = getopt(ac, av, "dqpclxXyb:f:P:N:C:")) != EOF) { |
while ((opt = getopt(ac, av, "dqpclRxXyb:f:P:N:C:")) != EOF) { |
switch (opt) { |
switch (opt) { |
case 'b': |
case 'b': |
bits = atoi(optarg); |
bits = atoi(optarg); |
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quiet = 1; |
quiet = 1; |
break; |
break; |
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case 'R': |
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if (rsa_alive() == 0) |
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exit(1); |
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else |
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exit(0); |
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break; |
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case 'x': |
case 'x': |
convert_to_ssh2 = 1; |
convert_to_ssh2 = 1; |
break; |
break; |
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snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, SSH_USER_DIR); |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, 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); |