version 1.22, 2000/05/01 08:20:56 |
version 1.53, 2001/03/26 23:23:24 |
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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> |
#include <openssl/rsa.h> |
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#include <openssl/dsa.h> |
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#include "ssh.h" |
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#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" |
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#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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#include "pathnames.h" |
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#include "log.h" |
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#include "readpass.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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/* Flag indicating that we just want to see the key fingerprint */ |
/* Flag indicating that we just want to see the key fingerprint */ |
int print_fingerprint = 0; |
int print_fingerprint = 0; |
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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. */ |
/* The identity file name, given on the command line or entered by the user. */ |
char identity_file[1024]; |
char identity_file[1024]; |
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int convert_to_ssh2 = 0; |
int convert_to_ssh2 = 0; |
int convert_from_ssh2 = 0; |
int convert_from_ssh2 = 0; |
int print_public = 0; |
int print_public = 0; |
int dsa_mode = 0; |
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/* default to RSA for SSH-1 */ |
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char *key_type_name = "rsa1"; |
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/* argv0 */ |
/* argv0 */ |
extern char *__progname; |
extern char *__progname; |
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ask_filename(struct passwd *pw, const char *prompt) |
ask_filename(struct passwd *pw, const char *prompt) |
{ |
{ |
char buf[1024]; |
char buf[1024]; |
snprintf(identity_file, sizeof(identity_file), "%s/%s", |
char *name = NULL; |
pw->pw_dir, SSH_CLIENT_IDENTITY); |
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printf("%s (%s): ", prompt, identity_file); |
switch (key_type_from_name(key_type_name)) { |
fflush(stdout); |
case KEY_RSA1: |
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name = _PATH_SSH_CLIENT_IDENTITY; |
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break; |
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case KEY_DSA: |
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name = _PATH_SSH_CLIENT_ID_DSA; |
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break; |
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case KEY_RSA: |
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name = _PATH_SSH_CLIENT_ID_RSA; |
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break; |
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default: |
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fprintf(stderr, "bad key type"); |
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exit(1); |
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break; |
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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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fflush(stderr); |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
exit(1); |
exit(1); |
if (strchr(buf, '\n')) |
if (strchr(buf, '\n')) |
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have_identity = 1; |
have_identity = 1; |
} |
} |
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int |
Key * |
try_load_key(char *filename, Key *k) |
try_load_pem_key(char *filename) |
{ |
{ |
int success = 1; |
char *pass; |
if (!load_private_key(filename, "", k, NULL)) { |
Key *prv; |
char *pass = read_passphrase("Enter passphrase: ", 1); |
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if (!load_private_key(filename, pass, k, NULL)) { |
prv = key_load_private(filename, "", NULL); |
success = 0; |
if (prv == NULL) { |
} |
pass = read_passphrase("Enter passphrase: ", 1); |
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prv = key_load_private(filename, pass, NULL); |
memset(pass, 0, strlen(pass)); |
memset(pass, 0, strlen(pass)); |
xfree(pass); |
xfree(pass); |
} |
} |
return success; |
return prv; |
} |
} |
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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) |
{ |
{ |
Key *k; |
Key *prv; |
int len; |
int len; |
unsigned char *blob; |
u_char *blob; |
struct stat st; |
struct stat st; |
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if (!have_identity) |
if (!have_identity) |
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perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
k = key_new(KEY_DSA); |
prv = try_load_pem_key(identity_file); |
if (!try_load_key(identity_file, k)) { |
if (prv == NULL) { |
fprintf(stderr, "load failed\n"); |
fprintf(stderr, "load failed\n"); |
exit(1); |
exit(1); |
} |
} |
dsa_make_key_blob(k, &blob, &len); |
key_to_blob(prv, &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(prv), key_type(prv), |
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(prv); |
xfree(blob); |
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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"need %d have %d", bytes, buffer_len(b)); |
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BN_bin2bn((u_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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Key *key = NULL; |
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int ignore, magic, rlen, ktype; |
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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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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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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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if (!BN_set_word(key->rsa->e, (u_long) buffer_get_char(&b))) { |
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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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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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#ifdef DEBUG_PK |
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{ |
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u_int slen; |
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u_char *sig, data[10] = "abcde12345"; |
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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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free(sig); |
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} |
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#endif |
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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)); |
} |
} |
blen = uudecode(encoded, (unsigned char *)blob, sizeof(blob)); |
blen = uudecode(encoded, (u_char *)blob, sizeof(blob)); |
if (blen < 0) { |
if (blen < 0) { |
fprintf(stderr, "uudecode failed.\n"); |
fprintf(stderr, "uudecode failed.\n"); |
exit(1); |
exit(1); |
} |
} |
k = dsa_key_from_blob(blob, blen); |
k = private ? |
if (!key_write(k, stdout)) |
do_convert_private_ssh2_from_blob(blob, blen) : |
fprintf(stderr, "key_write failed"); |
key_from_blob(blob, blen); |
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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"); |
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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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void |
void |
do_print_public(struct passwd *pw) |
do_print_public(struct passwd *pw) |
{ |
{ |
Key *k; |
Key *prv; |
int len; |
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unsigned char *blob; |
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struct stat st; |
struct stat st; |
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if (!have_identity) |
if (!have_identity) |
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perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
k = key_new(KEY_DSA); |
prv = try_load_pem_key(identity_file); |
if (!try_load_key(identity_file, k)) { |
if (prv == NULL) { |
fprintf(stderr, "load failed\n"); |
fprintf(stderr, "load failed\n"); |
exit(1); |
exit(1); |
} |
} |
dsa_make_key_blob(k, &blob, &len); |
if (!key_write(prv, stdout)) |
if (!key_write(k, stdout)) |
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fprintf(stderr, "key_write failed"); |
fprintf(stderr, "key_write failed"); |
key_free(k); |
key_free(prv); |
xfree(blob); |
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fprintf(stdout, "\n"); |
fprintf(stdout, "\n"); |
exit(0); |
exit(0); |
} |
} |
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do_fingerprint(struct passwd *pw) |
do_fingerprint(struct passwd *pw) |
{ |
{ |
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], *fp; |
int i, skip = 0, num = 1, invalid = 1; |
int i, skip = 0, num = 1, invalid = 1, rep, fptype; |
unsigned int ignore; |
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struct stat st; |
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) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
if (stat(identity_file, &st) < 0) { |
if (stat(identity_file, &st) < 0) { |
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
public = key_new(KEY_RSA); |
public = key_load_public(identity_file, &comment); |
if (load_public_key(identity_file, public, &comment)) { |
if (public != NULL) { |
printf("%d %s %s\n", BN_num_bits(public->rsa->n), |
fp = key_fingerprint(public, fptype, rep); |
key_fingerprint(public), comment); |
printf("%d %s %s\n", key_size(public), fp, comment); |
key_free(public); |
key_free(public); |
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xfree(comment); |
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xfree(fp); |
exit(0); |
exit(0); |
} |
} |
key_free(public); |
if (comment) |
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xfree(comment); |
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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)) { |
public = key_new(KEY_RSA1); |
invalid = 0; |
if (key_read(public, &cp) != 1) { |
comment = *cp ? cp : comment; |
cp = ep; |
printf("%d %s %s\n", BN_num_bits(n), |
key_free(public); |
fingerprint(e, n), |
public = key_new(KEY_UNSPEC); |
comment ? comment : "no comment"); |
if (key_read(public, &cp) != 1) { |
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key_free(public); |
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continue; |
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} |
} |
} |
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comment = *cp ? cp : comment; |
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fp = key_fingerprint(public, fptype, rep); |
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printf("%d %s %s\n", key_size(public), fp, |
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comment ? comment : "no comment"); |
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xfree(fp); |
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key_free(public); |
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invalid = 0; |
} |
} |
BN_free(e); |
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BN_free(n); |
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fclose(f); |
fclose(f); |
} |
} |
if (invalid) { |
if (invalid) { |
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char *old_passphrase, *passphrase1, *passphrase2; |
char *old_passphrase, *passphrase1, *passphrase2; |
struct stat st; |
struct stat st; |
Key *private; |
Key *private; |
Key *public; |
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int type = dsa_mode ? KEY_DSA : KEY_RSA; |
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if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
|
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perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
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if (type == KEY_RSA) { |
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/* XXX this works currently only for RSA */ |
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public = key_new(type); |
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if (!load_public_key(identity_file, public, NULL)) { |
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printf("%s is not a valid key file.\n", identity_file); |
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exit(1); |
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} |
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/* Clear the public key since we are just about to load the whole file. */ |
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key_free(public); |
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} |
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/* Try to load the file with empty passphrase. */ |
/* Try to load the file with empty passphrase. */ |
private = key_new(type); |
private = key_load_private(identity_file, "", &comment); |
if (!load_private_key(identity_file, "", private, &comment)) { |
if (private == NULL) { |
if (identity_passphrase) |
if (identity_passphrase) |
old_passphrase = xstrdup(identity_passphrase); |
old_passphrase = xstrdup(identity_passphrase); |
else |
else |
old_passphrase = read_passphrase("Enter old passphrase: ", 1); |
old_passphrase = read_passphrase("Enter old passphrase: ", 1); |
if (!load_private_key(identity_file, old_passphrase, private, &comment)) { |
private = key_load_private(identity_file, old_passphrase , &comment); |
memset(old_passphrase, 0, strlen(old_passphrase)); |
memset(old_passphrase, 0, strlen(old_passphrase)); |
xfree(old_passphrase); |
xfree(old_passphrase); |
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if (private == NULL) { |
printf("Bad passphrase.\n"); |
printf("Bad passphrase.\n"); |
exit(1); |
exit(1); |
} |
} |
memset(old_passphrase, 0, strlen(old_passphrase)); |
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xfree(old_passphrase); |
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} |
} |
printf("Key has comment '%s'\n", comment); |
printf("Key has comment '%s'\n", comment); |
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|
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} |
} |
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/* Save the file using the new passphrase. */ |
/* Save the file using the new passphrase. */ |
if (!save_private_key(identity_file, passphrase1, private, comment)) { |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s: %s.\n", |
identity_file, strerror(errno)); |
identity_file, strerror(errno)); |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
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void |
void |
do_change_comment(struct passwd *pw) |
do_change_comment(struct passwd *pw) |
{ |
{ |
char new_comment[1024], *comment; |
char new_comment[1024], *comment, *passphrase; |
Key *private; |
Key *private; |
Key *public; |
Key *public; |
char *passphrase; |
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struct stat st; |
struct stat st; |
FILE *f; |
FILE *f; |
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int fd; |
|
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if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
|
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perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
/* |
private = key_load_private(identity_file, "", &comment); |
* Try to load the public key from the file the verify that it is |
if (private == NULL) { |
* readable and of the proper format. |
|
*/ |
|
public = key_new(KEY_RSA); |
|
if (!load_public_key(identity_file, public, NULL)) { |
|
printf("%s is not a valid key file.\n", identity_file); |
|
exit(1); |
|
} |
|
|
|
private = key_new(KEY_RSA); |
|
if (load_private_key(identity_file, "", private, &comment)) |
|
passphrase = xstrdup(""); |
|
else { |
|
if (identity_passphrase) |
if (identity_passphrase) |
passphrase = xstrdup(identity_passphrase); |
passphrase = xstrdup(identity_passphrase); |
else if (identity_new_passphrase) |
else if (identity_new_passphrase) |
|
|
else |
else |
passphrase = read_passphrase("Enter passphrase: ", 1); |
passphrase = read_passphrase("Enter passphrase: ", 1); |
/* Try to load using the passphrase. */ |
/* Try to load using the passphrase. */ |
if (!load_private_key(identity_file, passphrase, private, &comment)) { |
private = key_load_private(identity_file, passphrase, &comment); |
|
if (private == NULL) { |
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
xfree(passphrase); |
xfree(passphrase); |
printf("Bad passphrase.\n"); |
printf("Bad passphrase.\n"); |
exit(1); |
exit(1); |
} |
} |
|
} else { |
|
passphrase = xstrdup(""); |
} |
} |
|
if (private->type != KEY_RSA1) { |
|
fprintf(stderr, "Comments are only supported for RSA1 keys.\n"); |
|
key_free(private); |
|
exit(1); |
|
} |
printf("Key now has comment '%s'\n", comment); |
printf("Key now has comment '%s'\n", comment); |
|
|
if (identity_comment) { |
if (identity_comment) { |
|
|
} |
} |
|
|
/* Save the file using the new passphrase. */ |
/* Save the file using the new passphrase. */ |
if (!save_private_key(identity_file, passphrase, private, new_comment)) { |
if (!key_save_private(private, identity_file, passphrase, new_comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s: %s.\n", |
identity_file, strerror(errno)); |
identity_file, strerror(errno)); |
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
|
|
} |
} |
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
xfree(passphrase); |
xfree(passphrase); |
|
public = key_from_private(private); |
key_free(private); |
key_free(private); |
|
|
strlcat(identity_file, ".pub", sizeof(identity_file)); |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
f = fopen(identity_file, "w"); |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
if (!f) { |
if (fd == -1) { |
printf("Could not save your public key in %s\n", identity_file); |
printf("Could not save your public key in %s\n", identity_file); |
exit(1); |
exit(1); |
} |
} |
|
f = fdopen(fd, "w"); |
|
if (f == NULL) { |
|
printf("fdopen %s failed", identity_file); |
|
exit(1); |
|
} |
if (!key_write(public, f)) |
if (!key_write(public, f)) |
fprintf(stderr, "write key failed"); |
fprintf(stderr, "write key failed"); |
key_free(public); |
key_free(public); |
|
|
void |
void |
usage(void) |
usage(void) |
{ |
{ |
printf("ssh-keygen version %s\n", SSH_VERSION); |
printf("Usage: %s [-lBpqxXyc] [-t type] [-b bits] [-f file] [-C comment] " |
printf("Usage: %s [-b bits] [-c] [-d] [-f file] [-l] [-p] [-q] [-x] [-y] [-C comment] [-N new-pass] [-P pass] [-X]\n", __progname); |
"[-N new-pass] [-P pass]\n", __progname); |
exit(1); |
exit(1); |
} |
} |
|
|
|
|
main(int ac, char **av) |
main(int ac, char **av) |
{ |
{ |
char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2; |
char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2; |
|
Key *private, *public; |
struct passwd *pw; |
struct passwd *pw; |
int opt; |
int opt, type, fd; |
struct stat st; |
struct stat st; |
FILE *f; |
FILE *f; |
Key *private; |
|
Key *public; |
|
extern int optind; |
extern int optind; |
extern char *optarg; |
extern char *optarg; |
|
|
OpenSSL_add_all_algorithms(); |
SSLeay_add_all_algorithms(); |
|
|
/* we need this for the home * directory. */ |
/* we need this for the home * directory. */ |
pw = getpwuid(getuid()); |
pw = getpwuid(getuid()); |
|
|
exit(1); |
exit(1); |
} |
} |
|
|
while ((opt = getopt(ac, av, "dqpclRxXyb:f:P:N:C:")) != EOF) { |
while ((opt = getopt(ac, av, "dqpclBRxXyb:f:t:P:N:C:")) != -1) { |
switch (opt) { |
switch (opt) { |
case 'b': |
case 'b': |
bits = atoi(optarg); |
bits = atoi(optarg); |
|
|
print_fingerprint = 1; |
print_fingerprint = 1; |
break; |
break; |
|
|
|
case 'B': |
|
print_bubblebabble = 1; |
|
break; |
|
|
case 'p': |
case 'p': |
change_passphrase = 1; |
change_passphrase = 1; |
break; |
break; |
|
|
break; |
break; |
|
|
case 'R': |
case 'R': |
if (rsa_alive() == 0) |
/* unused */ |
exit(1); |
exit(0); |
else |
|
exit(0); |
|
break; |
break; |
|
|
case 'x': |
case 'x': |
|
|
break; |
break; |
|
|
case 'd': |
case 'd': |
dsa_mode = 1; |
key_type_name = "dsa"; |
break; |
break; |
|
|
|
case 't': |
|
key_type_name = optarg; |
|
break; |
|
|
case '?': |
case '?': |
default: |
default: |
usage(); |
usage(); |
|
|
printf("Can only have one of -p and -c.\n"); |
printf("Can only have one of -p and -c.\n"); |
usage(); |
usage(); |
} |
} |
/* check if RSA support is needed and exists */ |
if (print_fingerprint || print_bubblebabble) |
if (dsa_mode == 0 && rsa_alive() == 0) { |
|
fprintf(stderr, |
|
"%s: no RSA support in libssl and libcrypto. See ssl(8).\n", |
|
__progname); |
|
exit(1); |
|
} |
|
if (print_fingerprint) |
|
do_fingerprint(pw); |
do_fingerprint(pw); |
if (change_passphrase) |
if (change_passphrase) |
do_change_passphrase(pw); |
do_change_passphrase(pw); |
|
|
|
|
arc4random_stir(); |
arc4random_stir(); |
|
|
if (dsa_mode != 0) { |
type = key_type_from_name(key_type_name); |
if (!quiet) |
if (type == KEY_UNSPEC) { |
printf("Generating DSA parameter and key.\n"); |
fprintf(stderr, "unknown key type %s\n", key_type_name); |
public = private = dsa_generate_key(bits); |
exit(1); |
if (private == NULL) { |
|
fprintf(stderr, "dsa_generate_keys failed"); |
|
exit(1); |
|
} |
|
} else { |
|
if (quiet) |
|
rsa_set_verbose(0); |
|
/* Generate the rsa key pair. */ |
|
public = key_new(KEY_RSA); |
|
private = key_new(KEY_RSA); |
|
rsa_generate_key(private->rsa, public->rsa, bits); |
|
} |
} |
|
if (!quiet) |
|
printf("Generating public/private %s key pair.\n", key_type_name); |
|
private = key_generate(type, bits); |
|
if (private == NULL) { |
|
fprintf(stderr, "key_generate failed"); |
|
exit(1); |
|
} |
|
public = key_from_private(private); |
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which to save the key"); |
ask_filename(pw, "Enter file in which to save the key"); |
|
|
/* Create ~/.ssh directory if it doesn\'t already exist. */ |
/* Create ~/.ssh directory if it doesn\'t already exist. */ |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, SSH_USER_DIR); |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR); |
if (strstr(identity_file, dotsshdir) != NULL && |
if (strstr(identity_file, dotsshdir) != NULL && |
stat(dotsshdir, &st) < 0) { |
stat(dotsshdir, &st) < 0) { |
if (mkdir(dotsshdir, 0755) < 0) |
if (mkdir(dotsshdir, 0700) < 0) |
error("Could not create directory '%s'.", dotsshdir); |
error("Could not create directory '%s'.", dotsshdir); |
else if (!quiet) |
else if (!quiet) |
printf("Created directory '%s'.\n", dotsshdir); |
printf("Created directory '%s'.\n", dotsshdir); |
|
|
} |
} |
|
|
/* Save the key with the given passphrase and comment. */ |
/* Save the key with the given passphrase and comment. */ |
if (!save_private_key(identity_file, passphrase1, private, comment)) { |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s: %s.\n", |
identity_file, strerror(errno)); |
identity_file, strerror(errno)); |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
|
|
xfree(passphrase1); |
xfree(passphrase1); |
|
|
/* Clear the private key and the random number generator. */ |
/* Clear the private key and the random number generator. */ |
if (private != public) { |
key_free(private); |
key_free(private); |
|
} |
|
arc4random_stir(); |
arc4random_stir(); |
|
|
if (!quiet) |
if (!quiet) |
printf("Your identification has been saved in %s.\n", identity_file); |
printf("Your identification has been saved in %s.\n", identity_file); |
|
|
strlcat(identity_file, ".pub", sizeof(identity_file)); |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
f = fopen(identity_file, "w"); |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
if (!f) { |
if (fd == -1) { |
printf("Could not save your public key in %s\n", identity_file); |
printf("Could not save your public key in %s\n", identity_file); |
exit(1); |
exit(1); |
} |
} |
|
f = fdopen(fd, "w"); |
|
if (f == NULL) { |
|
printf("fdopen %s failed", identity_file); |
|
exit(1); |
|
} |
if (!key_write(public, f)) |
if (!key_write(public, f)) |
fprintf(stderr, "write key failed"); |
fprintf(stderr, "write key failed"); |
fprintf(f, " %s\n", comment); |
fprintf(f, " %s\n", comment); |
fclose(f); |
fclose(f); |
|
|
if (!quiet) { |
if (!quiet) { |
|
char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX); |
printf("Your public key has been saved in %s.\n", |
printf("Your public key has been saved in %s.\n", |
identity_file); |
identity_file); |
printf("The key fingerprint is:\n"); |
printf("The key fingerprint is:\n"); |
printf("%s %s\n", key_fingerprint(public), comment); |
printf("%s %s\n", fp, comment); |
|
xfree(fp); |
} |
} |
|
|
key_free(public); |
key_free(public); |