1/* 2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * All rights reserved 5 * Identity and host key generation and maintenance. 6 * 7 * As far as I am concerned, the code I have written for this software 8 * can be used freely for any purpose. Any derived versions of this 9 * software must be clearly marked as such, and if the derived work is 10 * incompatible with the protocol description in the RFC file, it must be 11 * called by a name other than "ssh" or "Secure Shell". 12 */ 13 14#include "includes.h"
| 1/* 2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * All rights reserved 5 * Identity and host key generation and maintenance. 6 * 7 * As far as I am concerned, the code I have written for this software 8 * can be used freely for any purpose. Any derived versions of this 9 * software must be clearly marked as such, and if the derived work is 10 * incompatible with the protocol description in the RFC file, it must be 11 * called by a name other than "ssh" or "Secure Shell". 12 */ 13 14#include "includes.h"
|
15RCSID("$OpenBSD: ssh-keygen.c,v 1.102 2002/11/26 00:45:03 wcobb Exp $");
| 15RCSID("$OpenBSD: ssh-keygen.c,v 1.108 2003/08/14 16:08:58 markus Exp $");
|
16 17#include <openssl/evp.h> 18#include <openssl/pem.h> 19 20#include "xmalloc.h" 21#include "key.h" 22#include "rsa.h" 23#include "authfile.h" 24#include "uuencode.h" 25#include "buffer.h" 26#include "bufaux.h" 27#include "pathnames.h" 28#include "log.h" 29#include "readpass.h"
| 16 17#include <openssl/evp.h> 18#include <openssl/pem.h> 19 20#include "xmalloc.h" 21#include "key.h" 22#include "rsa.h" 23#include "authfile.h" 24#include "uuencode.h" 25#include "buffer.h" 26#include "bufaux.h" 27#include "pathnames.h" 28#include "log.h" 29#include "readpass.h"
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| 30#include "moduli.h"
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30 31#ifdef SMARTCARD 32#include "scard.h" 33#endif
| 31 32#ifdef SMARTCARD 33#include "scard.h" 34#endif
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| 35#ifdef DNS 36#include "dns.h" 37#endif
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34 35/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ 36int bits = 1024; 37 38/* 39 * Flag indicating that we just want to change the passphrase. This can be 40 * set on the command line. 41 */ 42int change_passphrase = 0; 43 44/* 45 * Flag indicating that we just want to change the comment. This can be set 46 * on the command line. 47 */ 48int change_comment = 0; 49 50int quiet = 0; 51 52/* Flag indicating that we just want to see the key fingerprint */ 53int print_fingerprint = 0; 54int print_bubblebabble = 0; 55 56/* The identity file name, given on the command line or entered by the user. */ 57char identity_file[1024]; 58int have_identity = 0; 59 60/* This is set to the passphrase if given on the command line. */ 61char *identity_passphrase = NULL; 62 63/* This is set to the new passphrase if given on the command line. */ 64char *identity_new_passphrase = NULL; 65 66/* This is set to the new comment if given on the command line. */ 67char *identity_comment = NULL; 68 69/* Dump public key file in format used by real and the original SSH 2 */ 70int convert_to_ssh2 = 0; 71int convert_from_ssh2 = 0; 72int print_public = 0;
| 38 39/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ 40int bits = 1024; 41 42/* 43 * Flag indicating that we just want to change the passphrase. This can be 44 * set on the command line. 45 */ 46int change_passphrase = 0; 47 48/* 49 * Flag indicating that we just want to change the comment. This can be set 50 * on the command line. 51 */ 52int change_comment = 0; 53 54int quiet = 0; 55 56/* Flag indicating that we just want to see the key fingerprint */ 57int print_fingerprint = 0; 58int print_bubblebabble = 0; 59 60/* The identity file name, given on the command line or entered by the user. */ 61char identity_file[1024]; 62int have_identity = 0; 63 64/* This is set to the passphrase if given on the command line. */ 65char *identity_passphrase = NULL; 66 67/* This is set to the new passphrase if given on the command line. */ 68char *identity_new_passphrase = NULL; 69 70/* This is set to the new comment if given on the command line. */ 71char *identity_comment = NULL; 72 73/* Dump public key file in format used by real and the original SSH 2 */ 74int convert_to_ssh2 = 0; 75int convert_from_ssh2 = 0; 76int print_public = 0;
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| 77int print_generic = 0;
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73 74char *key_type_name = NULL; 75 76/* argv0 */ 77#ifdef HAVE___PROGNAME 78extern char *__progname; 79#else 80char *__progname; 81#endif 82 83char hostname[MAXHOSTNAMELEN]; 84 85static void 86ask_filename(struct passwd *pw, const char *prompt) 87{ 88 char buf[1024]; 89 char *name = NULL; 90 91 if (key_type_name == NULL) 92 name = _PATH_SSH_CLIENT_ID_RSA; 93 else 94 switch (key_type_from_name(key_type_name)) { 95 case KEY_RSA1: 96 name = _PATH_SSH_CLIENT_IDENTITY; 97 break; 98 case KEY_DSA: 99 name = _PATH_SSH_CLIENT_ID_DSA; 100 break; 101 case KEY_RSA: 102 name = _PATH_SSH_CLIENT_ID_RSA; 103 break; 104 default: 105 fprintf(stderr, "bad key type"); 106 exit(1); 107 break; 108 } 109 110 snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); 111 fprintf(stderr, "%s (%s): ", prompt, identity_file); 112 if (fgets(buf, sizeof(buf), stdin) == NULL) 113 exit(1); 114 if (strchr(buf, '\n')) 115 *strchr(buf, '\n') = 0; 116 if (strcmp(buf, "") != 0) 117 strlcpy(identity_file, buf, sizeof(identity_file)); 118 have_identity = 1; 119} 120 121static Key * 122load_identity(char *filename) 123{ 124 char *pass; 125 Key *prv; 126 127 prv = key_load_private(filename, "", NULL); 128 if (prv == NULL) { 129 if (identity_passphrase) 130 pass = xstrdup(identity_passphrase); 131 else 132 pass = read_passphrase("Enter passphrase: ", 133 RP_ALLOW_STDIN); 134 prv = key_load_private(filename, pass, NULL); 135 memset(pass, 0, strlen(pass)); 136 xfree(pass); 137 } 138 return prv; 139} 140 141#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" 142#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----" 143#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----" 144#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb 145 146static void 147do_convert_to_ssh2(struct passwd *pw) 148{ 149 Key *k; 150 u_int len; 151 u_char *blob; 152 struct stat st; 153 154 if (!have_identity) 155 ask_filename(pw, "Enter file in which the key is"); 156 if (stat(identity_file, &st) < 0) { 157 perror(identity_file); 158 exit(1); 159 } 160 if ((k = key_load_public(identity_file, NULL)) == NULL) { 161 if ((k = load_identity(identity_file)) == NULL) { 162 fprintf(stderr, "load failed\n"); 163 exit(1); 164 } 165 }
| 78 79char *key_type_name = NULL; 80 81/* argv0 */ 82#ifdef HAVE___PROGNAME 83extern char *__progname; 84#else 85char *__progname; 86#endif 87 88char hostname[MAXHOSTNAMELEN]; 89 90static void 91ask_filename(struct passwd *pw, const char *prompt) 92{ 93 char buf[1024]; 94 char *name = NULL; 95 96 if (key_type_name == NULL) 97 name = _PATH_SSH_CLIENT_ID_RSA; 98 else 99 switch (key_type_from_name(key_type_name)) { 100 case KEY_RSA1: 101 name = _PATH_SSH_CLIENT_IDENTITY; 102 break; 103 case KEY_DSA: 104 name = _PATH_SSH_CLIENT_ID_DSA; 105 break; 106 case KEY_RSA: 107 name = _PATH_SSH_CLIENT_ID_RSA; 108 break; 109 default: 110 fprintf(stderr, "bad key type"); 111 exit(1); 112 break; 113 } 114 115 snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); 116 fprintf(stderr, "%s (%s): ", prompt, identity_file); 117 if (fgets(buf, sizeof(buf), stdin) == NULL) 118 exit(1); 119 if (strchr(buf, '\n')) 120 *strchr(buf, '\n') = 0; 121 if (strcmp(buf, "") != 0) 122 strlcpy(identity_file, buf, sizeof(identity_file)); 123 have_identity = 1; 124} 125 126static Key * 127load_identity(char *filename) 128{ 129 char *pass; 130 Key *prv; 131 132 prv = key_load_private(filename, "", NULL); 133 if (prv == NULL) { 134 if (identity_passphrase) 135 pass = xstrdup(identity_passphrase); 136 else 137 pass = read_passphrase("Enter passphrase: ", 138 RP_ALLOW_STDIN); 139 prv = key_load_private(filename, pass, NULL); 140 memset(pass, 0, strlen(pass)); 141 xfree(pass); 142 } 143 return prv; 144} 145 146#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" 147#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----" 148#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----" 149#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb 150 151static void 152do_convert_to_ssh2(struct passwd *pw) 153{ 154 Key *k; 155 u_int len; 156 u_char *blob; 157 struct stat st; 158 159 if (!have_identity) 160 ask_filename(pw, "Enter file in which the key is"); 161 if (stat(identity_file, &st) < 0) { 162 perror(identity_file); 163 exit(1); 164 } 165 if ((k = key_load_public(identity_file, NULL)) == NULL) { 166 if ((k = load_identity(identity_file)) == NULL) { 167 fprintf(stderr, "load failed\n"); 168 exit(1); 169 } 170 }
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| 171 if (k->type == KEY_RSA1) { 172 fprintf(stderr, "version 1 keys are not supported\n"); 173 exit(1); 174 }
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166 if (key_to_blob(k, &blob, &len) <= 0) { 167 fprintf(stderr, "key_to_blob failed\n"); 168 exit(1); 169 } 170 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); 171 fprintf(stdout, 172 "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n", 173 key_size(k), key_type(k), 174 pw->pw_name, hostname); 175 dump_base64(stdout, blob, len); 176 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); 177 key_free(k); 178 xfree(blob); 179 exit(0); 180} 181 182static void 183buffer_get_bignum_bits(Buffer *b, BIGNUM *value) 184{ 185 int bits = buffer_get_int(b); 186 int bytes = (bits + 7) / 8; 187 188 if (buffer_len(b) < bytes) 189 fatal("buffer_get_bignum_bits: input buffer too small: " 190 "need %d have %d", bytes, buffer_len(b)); 191 BN_bin2bn(buffer_ptr(b), bytes, value); 192 buffer_consume(b, bytes); 193} 194 195static Key * 196do_convert_private_ssh2_from_blob(u_char *blob, u_int blen) 197{ 198 Buffer b; 199 Key *key = NULL; 200 char *type, *cipher; 201 u_char *sig, data[] = "abcde12345"; 202 int magic, rlen, ktype, i1, i2, i3, i4; 203 u_int slen; 204 u_long e; 205 206 buffer_init(&b); 207 buffer_append(&b, blob, blen); 208 209 magic = buffer_get_int(&b); 210 if (magic != SSH_COM_PRIVATE_KEY_MAGIC) { 211 error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC); 212 buffer_free(&b); 213 return NULL; 214 } 215 i1 = buffer_get_int(&b); 216 type = buffer_get_string(&b, NULL); 217 cipher = buffer_get_string(&b, NULL); 218 i2 = buffer_get_int(&b); 219 i3 = buffer_get_int(&b); 220 i4 = buffer_get_int(&b); 221 debug("ignore (%d %d %d %d)", i1,i2,i3,i4); 222 if (strcmp(cipher, "none") != 0) { 223 error("unsupported cipher %s", cipher); 224 xfree(cipher); 225 buffer_free(&b); 226 xfree(type); 227 return NULL; 228 } 229 xfree(cipher); 230 231 if (strstr(type, "dsa")) { 232 ktype = KEY_DSA; 233 } else if (strstr(type, "rsa")) { 234 ktype = KEY_RSA; 235 } else { 236 xfree(type); 237 return NULL; 238 } 239 key = key_new_private(ktype); 240 xfree(type); 241 242 switch (key->type) { 243 case KEY_DSA: 244 buffer_get_bignum_bits(&b, key->dsa->p); 245 buffer_get_bignum_bits(&b, key->dsa->g); 246 buffer_get_bignum_bits(&b, key->dsa->q); 247 buffer_get_bignum_bits(&b, key->dsa->pub_key); 248 buffer_get_bignum_bits(&b, key->dsa->priv_key); 249 break; 250 case KEY_RSA: 251 e = buffer_get_char(&b); 252 debug("e %lx", e); 253 if (e < 30) { 254 e <<= 8; 255 e += buffer_get_char(&b); 256 debug("e %lx", e); 257 e <<= 8; 258 e += buffer_get_char(&b); 259 debug("e %lx", e); 260 } 261 if (!BN_set_word(key->rsa->e, e)) { 262 buffer_free(&b); 263 key_free(key); 264 return NULL; 265 } 266 buffer_get_bignum_bits(&b, key->rsa->d); 267 buffer_get_bignum_bits(&b, key->rsa->n); 268 buffer_get_bignum_bits(&b, key->rsa->iqmp); 269 buffer_get_bignum_bits(&b, key->rsa->q); 270 buffer_get_bignum_bits(&b, key->rsa->p); 271 rsa_generate_additional_parameters(key->rsa); 272 break; 273 } 274 rlen = buffer_len(&b); 275 if (rlen != 0) 276 error("do_convert_private_ssh2_from_blob: " 277 "remaining bytes in key blob %d", rlen); 278 buffer_free(&b); 279 280 /* try the key */ 281 key_sign(key, &sig, &slen, data, sizeof(data)); 282 key_verify(key, sig, slen, data, sizeof(data)); 283 xfree(sig); 284 return key; 285} 286 287static void 288do_convert_from_ssh2(struct passwd *pw) 289{ 290 Key *k; 291 int blen; 292 u_int len; 293 char line[1024], *p; 294 u_char blob[8096]; 295 char encoded[8096]; 296 struct stat st; 297 int escaped = 0, private = 0, ok; 298 FILE *fp; 299 300 if (!have_identity) 301 ask_filename(pw, "Enter file in which the key is"); 302 if (stat(identity_file, &st) < 0) { 303 perror(identity_file); 304 exit(1); 305 } 306 fp = fopen(identity_file, "r"); 307 if (fp == NULL) { 308 perror(identity_file); 309 exit(1); 310 } 311 encoded[0] = '\0'; 312 while (fgets(line, sizeof(line), fp)) { 313 if (!(p = strchr(line, '\n'))) { 314 fprintf(stderr, "input line too long.\n"); 315 exit(1); 316 } 317 if (p > line && p[-1] == '\\') 318 escaped++; 319 if (strncmp(line, "----", 4) == 0 || 320 strstr(line, ": ") != NULL) { 321 if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) 322 private = 1; 323 if (strstr(line, " END ") != NULL) { 324 break; 325 } 326 /* fprintf(stderr, "ignore: %s", line); */ 327 continue; 328 } 329 if (escaped) { 330 escaped--; 331 /* fprintf(stderr, "escaped: %s", line); */ 332 continue; 333 } 334 *p = '\0'; 335 strlcat(encoded, line, sizeof(encoded)); 336 } 337 len = strlen(encoded); 338 if (((len % 4) == 3) && 339 (encoded[len-1] == '=') && 340 (encoded[len-2] == '=') && 341 (encoded[len-3] == '=')) 342 encoded[len-3] = '\0'; 343 blen = uudecode(encoded, blob, sizeof(blob)); 344 if (blen < 0) { 345 fprintf(stderr, "uudecode failed.\n"); 346 exit(1); 347 } 348 k = private ? 349 do_convert_private_ssh2_from_blob(blob, blen) : 350 key_from_blob(blob, blen); 351 if (k == NULL) { 352 fprintf(stderr, "decode blob failed.\n"); 353 exit(1); 354 } 355 ok = private ? 356 (k->type == KEY_DSA ? 357 PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) : 358 PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) : 359 key_write(k, stdout); 360 if (!ok) { 361 fprintf(stderr, "key write failed"); 362 exit(1); 363 } 364 key_free(k); 365 if (!private) 366 fprintf(stdout, "\n"); 367 fclose(fp); 368 exit(0); 369} 370 371static void 372do_print_public(struct passwd *pw) 373{ 374 Key *prv; 375 struct stat st; 376 377 if (!have_identity) 378 ask_filename(pw, "Enter file in which the key is"); 379 if (stat(identity_file, &st) < 0) { 380 perror(identity_file); 381 exit(1); 382 } 383 prv = load_identity(identity_file); 384 if (prv == NULL) { 385 fprintf(stderr, "load failed\n"); 386 exit(1); 387 } 388 if (!key_write(prv, stdout)) 389 fprintf(stderr, "key_write failed"); 390 key_free(prv); 391 fprintf(stdout, "\n"); 392 exit(0); 393} 394 395#ifdef SMARTCARD 396static void 397do_upload(struct passwd *pw, const char *sc_reader_id) 398{ 399 Key *prv = NULL; 400 struct stat st; 401 int ret; 402 403 if (!have_identity) 404 ask_filename(pw, "Enter file in which the key is"); 405 if (stat(identity_file, &st) < 0) { 406 perror(identity_file); 407 exit(1); 408 } 409 prv = load_identity(identity_file); 410 if (prv == NULL) { 411 error("load failed"); 412 exit(1); 413 } 414 ret = sc_put_key(prv, sc_reader_id); 415 key_free(prv); 416 if (ret < 0) 417 exit(1);
| 175 if (key_to_blob(k, &blob, &len) <= 0) { 176 fprintf(stderr, "key_to_blob failed\n"); 177 exit(1); 178 } 179 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); 180 fprintf(stdout, 181 "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n", 182 key_size(k), key_type(k), 183 pw->pw_name, hostname); 184 dump_base64(stdout, blob, len); 185 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); 186 key_free(k); 187 xfree(blob); 188 exit(0); 189} 190 191static void 192buffer_get_bignum_bits(Buffer *b, BIGNUM *value) 193{ 194 int bits = buffer_get_int(b); 195 int bytes = (bits + 7) / 8; 196 197 if (buffer_len(b) < bytes) 198 fatal("buffer_get_bignum_bits: input buffer too small: " 199 "need %d have %d", bytes, buffer_len(b)); 200 BN_bin2bn(buffer_ptr(b), bytes, value); 201 buffer_consume(b, bytes); 202} 203 204static Key * 205do_convert_private_ssh2_from_blob(u_char *blob, u_int blen) 206{ 207 Buffer b; 208 Key *key = NULL; 209 char *type, *cipher; 210 u_char *sig, data[] = "abcde12345"; 211 int magic, rlen, ktype, i1, i2, i3, i4; 212 u_int slen; 213 u_long e; 214 215 buffer_init(&b); 216 buffer_append(&b, blob, blen); 217 218 magic = buffer_get_int(&b); 219 if (magic != SSH_COM_PRIVATE_KEY_MAGIC) { 220 error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC); 221 buffer_free(&b); 222 return NULL; 223 } 224 i1 = buffer_get_int(&b); 225 type = buffer_get_string(&b, NULL); 226 cipher = buffer_get_string(&b, NULL); 227 i2 = buffer_get_int(&b); 228 i3 = buffer_get_int(&b); 229 i4 = buffer_get_int(&b); 230 debug("ignore (%d %d %d %d)", i1,i2,i3,i4); 231 if (strcmp(cipher, "none") != 0) { 232 error("unsupported cipher %s", cipher); 233 xfree(cipher); 234 buffer_free(&b); 235 xfree(type); 236 return NULL; 237 } 238 xfree(cipher); 239 240 if (strstr(type, "dsa")) { 241 ktype = KEY_DSA; 242 } else if (strstr(type, "rsa")) { 243 ktype = KEY_RSA; 244 } else { 245 xfree(type); 246 return NULL; 247 } 248 key = key_new_private(ktype); 249 xfree(type); 250 251 switch (key->type) { 252 case KEY_DSA: 253 buffer_get_bignum_bits(&b, key->dsa->p); 254 buffer_get_bignum_bits(&b, key->dsa->g); 255 buffer_get_bignum_bits(&b, key->dsa->q); 256 buffer_get_bignum_bits(&b, key->dsa->pub_key); 257 buffer_get_bignum_bits(&b, key->dsa->priv_key); 258 break; 259 case KEY_RSA: 260 e = buffer_get_char(&b); 261 debug("e %lx", e); 262 if (e < 30) { 263 e <<= 8; 264 e += buffer_get_char(&b); 265 debug("e %lx", e); 266 e <<= 8; 267 e += buffer_get_char(&b); 268 debug("e %lx", e); 269 } 270 if (!BN_set_word(key->rsa->e, e)) { 271 buffer_free(&b); 272 key_free(key); 273 return NULL; 274 } 275 buffer_get_bignum_bits(&b, key->rsa->d); 276 buffer_get_bignum_bits(&b, key->rsa->n); 277 buffer_get_bignum_bits(&b, key->rsa->iqmp); 278 buffer_get_bignum_bits(&b, key->rsa->q); 279 buffer_get_bignum_bits(&b, key->rsa->p); 280 rsa_generate_additional_parameters(key->rsa); 281 break; 282 } 283 rlen = buffer_len(&b); 284 if (rlen != 0) 285 error("do_convert_private_ssh2_from_blob: " 286 "remaining bytes in key blob %d", rlen); 287 buffer_free(&b); 288 289 /* try the key */ 290 key_sign(key, &sig, &slen, data, sizeof(data)); 291 key_verify(key, sig, slen, data, sizeof(data)); 292 xfree(sig); 293 return key; 294} 295 296static void 297do_convert_from_ssh2(struct passwd *pw) 298{ 299 Key *k; 300 int blen; 301 u_int len; 302 char line[1024], *p; 303 u_char blob[8096]; 304 char encoded[8096]; 305 struct stat st; 306 int escaped = 0, private = 0, ok; 307 FILE *fp; 308 309 if (!have_identity) 310 ask_filename(pw, "Enter file in which the key is"); 311 if (stat(identity_file, &st) < 0) { 312 perror(identity_file); 313 exit(1); 314 } 315 fp = fopen(identity_file, "r"); 316 if (fp == NULL) { 317 perror(identity_file); 318 exit(1); 319 } 320 encoded[0] = '\0'; 321 while (fgets(line, sizeof(line), fp)) { 322 if (!(p = strchr(line, '\n'))) { 323 fprintf(stderr, "input line too long.\n"); 324 exit(1); 325 } 326 if (p > line && p[-1] == '\\') 327 escaped++; 328 if (strncmp(line, "----", 4) == 0 || 329 strstr(line, ": ") != NULL) { 330 if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) 331 private = 1; 332 if (strstr(line, " END ") != NULL) { 333 break; 334 } 335 /* fprintf(stderr, "ignore: %s", line); */ 336 continue; 337 } 338 if (escaped) { 339 escaped--; 340 /* fprintf(stderr, "escaped: %s", line); */ 341 continue; 342 } 343 *p = '\0'; 344 strlcat(encoded, line, sizeof(encoded)); 345 } 346 len = strlen(encoded); 347 if (((len % 4) == 3) && 348 (encoded[len-1] == '=') && 349 (encoded[len-2] == '=') && 350 (encoded[len-3] == '=')) 351 encoded[len-3] = '\0'; 352 blen = uudecode(encoded, blob, sizeof(blob)); 353 if (blen < 0) { 354 fprintf(stderr, "uudecode failed.\n"); 355 exit(1); 356 } 357 k = private ? 358 do_convert_private_ssh2_from_blob(blob, blen) : 359 key_from_blob(blob, blen); 360 if (k == NULL) { 361 fprintf(stderr, "decode blob failed.\n"); 362 exit(1); 363 } 364 ok = private ? 365 (k->type == KEY_DSA ? 366 PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) : 367 PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) : 368 key_write(k, stdout); 369 if (!ok) { 370 fprintf(stderr, "key write failed"); 371 exit(1); 372 } 373 key_free(k); 374 if (!private) 375 fprintf(stdout, "\n"); 376 fclose(fp); 377 exit(0); 378} 379 380static void 381do_print_public(struct passwd *pw) 382{ 383 Key *prv; 384 struct stat st; 385 386 if (!have_identity) 387 ask_filename(pw, "Enter file in which the key is"); 388 if (stat(identity_file, &st) < 0) { 389 perror(identity_file); 390 exit(1); 391 } 392 prv = load_identity(identity_file); 393 if (prv == NULL) { 394 fprintf(stderr, "load failed\n"); 395 exit(1); 396 } 397 if (!key_write(prv, stdout)) 398 fprintf(stderr, "key_write failed"); 399 key_free(prv); 400 fprintf(stdout, "\n"); 401 exit(0); 402} 403 404#ifdef SMARTCARD 405static void 406do_upload(struct passwd *pw, const char *sc_reader_id) 407{ 408 Key *prv = NULL; 409 struct stat st; 410 int ret; 411 412 if (!have_identity) 413 ask_filename(pw, "Enter file in which the key is"); 414 if (stat(identity_file, &st) < 0) { 415 perror(identity_file); 416 exit(1); 417 } 418 prv = load_identity(identity_file); 419 if (prv == NULL) { 420 error("load failed"); 421 exit(1); 422 } 423 ret = sc_put_key(prv, sc_reader_id); 424 key_free(prv); 425 if (ret < 0) 426 exit(1);
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418 log("loading key done");
| 427 logit("loading key done");
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419 exit(0); 420} 421 422static void 423do_download(struct passwd *pw, const char *sc_reader_id) 424{ 425 Key **keys = NULL; 426 int i; 427 428 keys = sc_get_keys(sc_reader_id, NULL); 429 if (keys == NULL) 430 fatal("cannot read public key from smartcard"); 431 for (i = 0; keys[i]; i++) { 432 key_write(keys[i], stdout); 433 key_free(keys[i]); 434 fprintf(stdout, "\n"); 435 } 436 xfree(keys); 437 exit(0); 438} 439#endif /* SMARTCARD */ 440 441static void 442do_fingerprint(struct passwd *pw) 443{ 444 FILE *f; 445 Key *public; 446 char *comment = NULL, *cp, *ep, line[16*1024], *fp; 447 int i, skip = 0, num = 1, invalid = 1; 448 enum fp_rep rep; 449 enum fp_type fptype; 450 struct stat st; 451 452 fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; 453 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; 454 455 if (!have_identity) 456 ask_filename(pw, "Enter file in which the key is"); 457 if (stat(identity_file, &st) < 0) { 458 perror(identity_file); 459 exit(1); 460 } 461 public = key_load_public(identity_file, &comment); 462 if (public != NULL) { 463 fp = key_fingerprint(public, fptype, rep); 464 printf("%u %s %s\n", key_size(public), fp, comment); 465 key_free(public); 466 xfree(comment); 467 xfree(fp); 468 exit(0); 469 } 470 if (comment) 471 xfree(comment); 472 473 f = fopen(identity_file, "r"); 474 if (f != NULL) { 475 while (fgets(line, sizeof(line), f)) { 476 i = strlen(line) - 1; 477 if (line[i] != '\n') { 478 error("line %d too long: %.40s...", num, line); 479 skip = 1; 480 continue; 481 } 482 num++; 483 if (skip) { 484 skip = 0; 485 continue; 486 } 487 line[i] = '\0'; 488 489 /* Skip leading whitespace, empty and comment lines. */ 490 for (cp = line; *cp == ' ' || *cp == '\t'; cp++) 491 ; 492 if (!*cp || *cp == '\n' || *cp == '#') 493 continue ; 494 i = strtol(cp, &ep, 10); 495 if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) { 496 int quoted = 0; 497 comment = cp; 498 for (; *cp && (quoted || (*cp != ' ' && 499 *cp != '\t')); cp++) { 500 if (*cp == '\\' && cp[1] == '"') 501 cp++; /* Skip both */ 502 else if (*cp == '"') 503 quoted = !quoted; 504 } 505 if (!*cp) 506 continue; 507 *cp++ = '\0'; 508 } 509 ep = cp; 510 public = key_new(KEY_RSA1); 511 if (key_read(public, &cp) != 1) { 512 cp = ep; 513 key_free(public); 514 public = key_new(KEY_UNSPEC); 515 if (key_read(public, &cp) != 1) { 516 key_free(public); 517 continue; 518 } 519 } 520 comment = *cp ? cp : comment; 521 fp = key_fingerprint(public, fptype, rep); 522 printf("%u %s %s\n", key_size(public), fp, 523 comment ? comment : "no comment"); 524 xfree(fp); 525 key_free(public); 526 invalid = 0; 527 } 528 fclose(f); 529 } 530 if (invalid) { 531 printf("%s is not a public key file.\n", identity_file); 532 exit(1); 533 } 534 exit(0); 535} 536 537/* 538 * Perform changing a passphrase. The argument is the passwd structure 539 * for the current user. 540 */ 541static void 542do_change_passphrase(struct passwd *pw) 543{ 544 char *comment; 545 char *old_passphrase, *passphrase1, *passphrase2; 546 struct stat st; 547 Key *private; 548 549 if (!have_identity) 550 ask_filename(pw, "Enter file in which the key is"); 551 if (stat(identity_file, &st) < 0) { 552 perror(identity_file); 553 exit(1); 554 } 555 /* Try to load the file with empty passphrase. */ 556 private = key_load_private(identity_file, "", &comment); 557 if (private == NULL) { 558 if (identity_passphrase) 559 old_passphrase = xstrdup(identity_passphrase); 560 else 561 old_passphrase = 562 read_passphrase("Enter old passphrase: ", 563 RP_ALLOW_STDIN); 564 private = key_load_private(identity_file, old_passphrase, 565 &comment); 566 memset(old_passphrase, 0, strlen(old_passphrase)); 567 xfree(old_passphrase); 568 if (private == NULL) { 569 printf("Bad passphrase.\n"); 570 exit(1); 571 } 572 } 573 printf("Key has comment '%s'\n", comment); 574 575 /* Ask the new passphrase (twice). */ 576 if (identity_new_passphrase) { 577 passphrase1 = xstrdup(identity_new_passphrase); 578 passphrase2 = NULL; 579 } else { 580 passphrase1 = 581 read_passphrase("Enter new passphrase (empty for no " 582 "passphrase): ", RP_ALLOW_STDIN); 583 passphrase2 = read_passphrase("Enter same passphrase again: ", 584 RP_ALLOW_STDIN); 585 586 /* Verify that they are the same. */ 587 if (strcmp(passphrase1, passphrase2) != 0) { 588 memset(passphrase1, 0, strlen(passphrase1)); 589 memset(passphrase2, 0, strlen(passphrase2)); 590 xfree(passphrase1); 591 xfree(passphrase2); 592 printf("Pass phrases do not match. Try again.\n"); 593 exit(1); 594 } 595 /* Destroy the other copy. */ 596 memset(passphrase2, 0, strlen(passphrase2)); 597 xfree(passphrase2); 598 } 599 600 /* Save the file using the new passphrase. */ 601 if (!key_save_private(private, identity_file, passphrase1, comment)) { 602 printf("Saving the key failed: %s.\n", identity_file); 603 memset(passphrase1, 0, strlen(passphrase1)); 604 xfree(passphrase1); 605 key_free(private); 606 xfree(comment); 607 exit(1); 608 } 609 /* Destroy the passphrase and the copy of the key in memory. */ 610 memset(passphrase1, 0, strlen(passphrase1)); 611 xfree(passphrase1); 612 key_free(private); /* Destroys contents */ 613 xfree(comment); 614 615 printf("Your identification has been saved with the new passphrase.\n"); 616 exit(0); 617} 618
| 428 exit(0); 429} 430 431static void 432do_download(struct passwd *pw, const char *sc_reader_id) 433{ 434 Key **keys = NULL; 435 int i; 436 437 keys = sc_get_keys(sc_reader_id, NULL); 438 if (keys == NULL) 439 fatal("cannot read public key from smartcard"); 440 for (i = 0; keys[i]; i++) { 441 key_write(keys[i], stdout); 442 key_free(keys[i]); 443 fprintf(stdout, "\n"); 444 } 445 xfree(keys); 446 exit(0); 447} 448#endif /* SMARTCARD */ 449 450static void 451do_fingerprint(struct passwd *pw) 452{ 453 FILE *f; 454 Key *public; 455 char *comment = NULL, *cp, *ep, line[16*1024], *fp; 456 int i, skip = 0, num = 1, invalid = 1; 457 enum fp_rep rep; 458 enum fp_type fptype; 459 struct stat st; 460 461 fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; 462 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; 463 464 if (!have_identity) 465 ask_filename(pw, "Enter file in which the key is"); 466 if (stat(identity_file, &st) < 0) { 467 perror(identity_file); 468 exit(1); 469 } 470 public = key_load_public(identity_file, &comment); 471 if (public != NULL) { 472 fp = key_fingerprint(public, fptype, rep); 473 printf("%u %s %s\n", key_size(public), fp, comment); 474 key_free(public); 475 xfree(comment); 476 xfree(fp); 477 exit(0); 478 } 479 if (comment) 480 xfree(comment); 481 482 f = fopen(identity_file, "r"); 483 if (f != NULL) { 484 while (fgets(line, sizeof(line), f)) { 485 i = strlen(line) - 1; 486 if (line[i] != '\n') { 487 error("line %d too long: %.40s...", num, line); 488 skip = 1; 489 continue; 490 } 491 num++; 492 if (skip) { 493 skip = 0; 494 continue; 495 } 496 line[i] = '\0'; 497 498 /* Skip leading whitespace, empty and comment lines. */ 499 for (cp = line; *cp == ' ' || *cp == '\t'; cp++) 500 ; 501 if (!*cp || *cp == '\n' || *cp == '#') 502 continue ; 503 i = strtol(cp, &ep, 10); 504 if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) { 505 int quoted = 0; 506 comment = cp; 507 for (; *cp && (quoted || (*cp != ' ' && 508 *cp != '\t')); cp++) { 509 if (*cp == '\\' && cp[1] == '"') 510 cp++; /* Skip both */ 511 else if (*cp == '"') 512 quoted = !quoted; 513 } 514 if (!*cp) 515 continue; 516 *cp++ = '\0'; 517 } 518 ep = cp; 519 public = key_new(KEY_RSA1); 520 if (key_read(public, &cp) != 1) { 521 cp = ep; 522 key_free(public); 523 public = key_new(KEY_UNSPEC); 524 if (key_read(public, &cp) != 1) { 525 key_free(public); 526 continue; 527 } 528 } 529 comment = *cp ? cp : comment; 530 fp = key_fingerprint(public, fptype, rep); 531 printf("%u %s %s\n", key_size(public), fp, 532 comment ? comment : "no comment"); 533 xfree(fp); 534 key_free(public); 535 invalid = 0; 536 } 537 fclose(f); 538 } 539 if (invalid) { 540 printf("%s is not a public key file.\n", identity_file); 541 exit(1); 542 } 543 exit(0); 544} 545 546/* 547 * Perform changing a passphrase. The argument is the passwd structure 548 * for the current user. 549 */ 550static void 551do_change_passphrase(struct passwd *pw) 552{ 553 char *comment; 554 char *old_passphrase, *passphrase1, *passphrase2; 555 struct stat st; 556 Key *private; 557 558 if (!have_identity) 559 ask_filename(pw, "Enter file in which the key is"); 560 if (stat(identity_file, &st) < 0) { 561 perror(identity_file); 562 exit(1); 563 } 564 /* Try to load the file with empty passphrase. */ 565 private = key_load_private(identity_file, "", &comment); 566 if (private == NULL) { 567 if (identity_passphrase) 568 old_passphrase = xstrdup(identity_passphrase); 569 else 570 old_passphrase = 571 read_passphrase("Enter old passphrase: ", 572 RP_ALLOW_STDIN); 573 private = key_load_private(identity_file, old_passphrase, 574 &comment); 575 memset(old_passphrase, 0, strlen(old_passphrase)); 576 xfree(old_passphrase); 577 if (private == NULL) { 578 printf("Bad passphrase.\n"); 579 exit(1); 580 } 581 } 582 printf("Key has comment '%s'\n", comment); 583 584 /* Ask the new passphrase (twice). */ 585 if (identity_new_passphrase) { 586 passphrase1 = xstrdup(identity_new_passphrase); 587 passphrase2 = NULL; 588 } else { 589 passphrase1 = 590 read_passphrase("Enter new passphrase (empty for no " 591 "passphrase): ", RP_ALLOW_STDIN); 592 passphrase2 = read_passphrase("Enter same passphrase again: ", 593 RP_ALLOW_STDIN); 594 595 /* Verify that they are the same. */ 596 if (strcmp(passphrase1, passphrase2) != 0) { 597 memset(passphrase1, 0, strlen(passphrase1)); 598 memset(passphrase2, 0, strlen(passphrase2)); 599 xfree(passphrase1); 600 xfree(passphrase2); 601 printf("Pass phrases do not match. Try again.\n"); 602 exit(1); 603 } 604 /* Destroy the other copy. */ 605 memset(passphrase2, 0, strlen(passphrase2)); 606 xfree(passphrase2); 607 } 608 609 /* Save the file using the new passphrase. */ 610 if (!key_save_private(private, identity_file, passphrase1, comment)) { 611 printf("Saving the key failed: %s.\n", identity_file); 612 memset(passphrase1, 0, strlen(passphrase1)); 613 xfree(passphrase1); 614 key_free(private); 615 xfree(comment); 616 exit(1); 617 } 618 /* Destroy the passphrase and the copy of the key in memory. */ 619 memset(passphrase1, 0, strlen(passphrase1)); 620 xfree(passphrase1); 621 key_free(private); /* Destroys contents */ 622 xfree(comment); 623 624 printf("Your identification has been saved with the new passphrase.\n"); 625 exit(0); 626} 627
|
| 628#ifdef DNS
|
619/*
| 629/*
|
| 630 * Print the SSHFP RR. 631 */ 632static void 633do_print_resource_record(struct passwd *pw, char *hostname) 634{ 635 Key *public; 636 char *comment = NULL; 637 struct stat st; 638 639 if (!have_identity) 640 ask_filename(pw, "Enter file in which the key is"); 641 if (stat(identity_file, &st) < 0) { 642 perror(identity_file); 643 exit(1); 644 } 645 public = key_load_public(identity_file, &comment); 646 if (public != NULL) { 647 export_dns_rr(hostname, public, stdout, print_generic); 648 key_free(public); 649 xfree(comment); 650 exit(0); 651 } 652 if (comment) 653 xfree(comment); 654 655 printf("failed to read v2 public key from %s.\n", identity_file); 656 exit(1); 657} 658#endif /* DNS */ 659 660/*
|
620 * Change the comment of a private key file. 621 */ 622static void 623do_change_comment(struct passwd *pw) 624{ 625 char new_comment[1024], *comment, *passphrase; 626 Key *private; 627 Key *public; 628 struct stat st; 629 FILE *f; 630 int fd; 631 632 if (!have_identity) 633 ask_filename(pw, "Enter file in which the key is"); 634 if (stat(identity_file, &st) < 0) { 635 perror(identity_file); 636 exit(1); 637 } 638 private = key_load_private(identity_file, "", &comment); 639 if (private == NULL) { 640 if (identity_passphrase) 641 passphrase = xstrdup(identity_passphrase); 642 else if (identity_new_passphrase) 643 passphrase = xstrdup(identity_new_passphrase); 644 else 645 passphrase = read_passphrase("Enter passphrase: ", 646 RP_ALLOW_STDIN); 647 /* Try to load using the passphrase. */ 648 private = key_load_private(identity_file, passphrase, &comment); 649 if (private == NULL) { 650 memset(passphrase, 0, strlen(passphrase)); 651 xfree(passphrase); 652 printf("Bad passphrase.\n"); 653 exit(1); 654 } 655 } else { 656 passphrase = xstrdup(""); 657 } 658 if (private->type != KEY_RSA1) { 659 fprintf(stderr, "Comments are only supported for RSA1 keys.\n"); 660 key_free(private); 661 exit(1); 662 } 663 printf("Key now has comment '%s'\n", comment); 664 665 if (identity_comment) { 666 strlcpy(new_comment, identity_comment, sizeof(new_comment)); 667 } else { 668 printf("Enter new comment: "); 669 fflush(stdout); 670 if (!fgets(new_comment, sizeof(new_comment), stdin)) { 671 memset(passphrase, 0, strlen(passphrase)); 672 key_free(private); 673 exit(1); 674 } 675 if (strchr(new_comment, '\n')) 676 *strchr(new_comment, '\n') = 0; 677 } 678 679 /* Save the file using the new passphrase. */ 680 if (!key_save_private(private, identity_file, passphrase, new_comment)) { 681 printf("Saving the key failed: %s.\n", identity_file); 682 memset(passphrase, 0, strlen(passphrase)); 683 xfree(passphrase); 684 key_free(private); 685 xfree(comment); 686 exit(1); 687 } 688 memset(passphrase, 0, strlen(passphrase)); 689 xfree(passphrase); 690 public = key_from_private(private); 691 key_free(private); 692 693 strlcat(identity_file, ".pub", sizeof(identity_file)); 694 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); 695 if (fd == -1) { 696 printf("Could not save your public key in %s\n", identity_file); 697 exit(1); 698 } 699 f = fdopen(fd, "w"); 700 if (f == NULL) { 701 printf("fdopen %s failed", identity_file); 702 exit(1); 703 } 704 if (!key_write(public, f)) 705 fprintf(stderr, "write key failed"); 706 key_free(public); 707 fprintf(f, " %s\n", new_comment); 708 fclose(f); 709 710 xfree(comment); 711 712 printf("The comment in your key file has been changed.\n"); 713 exit(0); 714} 715 716static void 717usage(void) 718{ 719 fprintf(stderr, "Usage: %s [options]\n", __progname); 720 fprintf(stderr, "Options:\n"); 721 fprintf(stderr, " -b bits Number of bits in the key to create.\n"); 722 fprintf(stderr, " -c Change comment in private and public key files.\n"); 723 fprintf(stderr, " -e Convert OpenSSH to IETF SECSH key file.\n"); 724 fprintf(stderr, " -f filename Filename of the key file.\n");
| 661 * Change the comment of a private key file. 662 */ 663static void 664do_change_comment(struct passwd *pw) 665{ 666 char new_comment[1024], *comment, *passphrase; 667 Key *private; 668 Key *public; 669 struct stat st; 670 FILE *f; 671 int fd; 672 673 if (!have_identity) 674 ask_filename(pw, "Enter file in which the key is"); 675 if (stat(identity_file, &st) < 0) { 676 perror(identity_file); 677 exit(1); 678 } 679 private = key_load_private(identity_file, "", &comment); 680 if (private == NULL) { 681 if (identity_passphrase) 682 passphrase = xstrdup(identity_passphrase); 683 else if (identity_new_passphrase) 684 passphrase = xstrdup(identity_new_passphrase); 685 else 686 passphrase = read_passphrase("Enter passphrase: ", 687 RP_ALLOW_STDIN); 688 /* Try to load using the passphrase. */ 689 private = key_load_private(identity_file, passphrase, &comment); 690 if (private == NULL) { 691 memset(passphrase, 0, strlen(passphrase)); 692 xfree(passphrase); 693 printf("Bad passphrase.\n"); 694 exit(1); 695 } 696 } else { 697 passphrase = xstrdup(""); 698 } 699 if (private->type != KEY_RSA1) { 700 fprintf(stderr, "Comments are only supported for RSA1 keys.\n"); 701 key_free(private); 702 exit(1); 703 } 704 printf("Key now has comment '%s'\n", comment); 705 706 if (identity_comment) { 707 strlcpy(new_comment, identity_comment, sizeof(new_comment)); 708 } else { 709 printf("Enter new comment: "); 710 fflush(stdout); 711 if (!fgets(new_comment, sizeof(new_comment), stdin)) { 712 memset(passphrase, 0, strlen(passphrase)); 713 key_free(private); 714 exit(1); 715 } 716 if (strchr(new_comment, '\n')) 717 *strchr(new_comment, '\n') = 0; 718 } 719 720 /* Save the file using the new passphrase. */ 721 if (!key_save_private(private, identity_file, passphrase, new_comment)) { 722 printf("Saving the key failed: %s.\n", identity_file); 723 memset(passphrase, 0, strlen(passphrase)); 724 xfree(passphrase); 725 key_free(private); 726 xfree(comment); 727 exit(1); 728 } 729 memset(passphrase, 0, strlen(passphrase)); 730 xfree(passphrase); 731 public = key_from_private(private); 732 key_free(private); 733 734 strlcat(identity_file, ".pub", sizeof(identity_file)); 735 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); 736 if (fd == -1) { 737 printf("Could not save your public key in %s\n", identity_file); 738 exit(1); 739 } 740 f = fdopen(fd, "w"); 741 if (f == NULL) { 742 printf("fdopen %s failed", identity_file); 743 exit(1); 744 } 745 if (!key_write(public, f)) 746 fprintf(stderr, "write key failed"); 747 key_free(public); 748 fprintf(f, " %s\n", new_comment); 749 fclose(f); 750 751 xfree(comment); 752 753 printf("The comment in your key file has been changed.\n"); 754 exit(0); 755} 756 757static void 758usage(void) 759{ 760 fprintf(stderr, "Usage: %s [options]\n", __progname); 761 fprintf(stderr, "Options:\n"); 762 fprintf(stderr, " -b bits Number of bits in the key to create.\n"); 763 fprintf(stderr, " -c Change comment in private and public key files.\n"); 764 fprintf(stderr, " -e Convert OpenSSH to IETF SECSH key file.\n"); 765 fprintf(stderr, " -f filename Filename of the key file.\n");
|
| 766 fprintf(stderr, " -g Use generic DNS resource record format.\n");
|
725 fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n"); 726 fprintf(stderr, " -l Show fingerprint of key file.\n"); 727 fprintf(stderr, " -p Change passphrase of private key file.\n"); 728 fprintf(stderr, " -q Quiet.\n"); 729 fprintf(stderr, " -y Read private key file and print public key.\n"); 730 fprintf(stderr, " -t type Specify type of key to create.\n"); 731 fprintf(stderr, " -B Show bubblebabble digest of key file.\n"); 732 fprintf(stderr, " -C comment Provide new comment.\n"); 733 fprintf(stderr, " -N phrase Provide new passphrase.\n"); 734 fprintf(stderr, " -P phrase Provide old passphrase.\n");
| 767 fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n"); 768 fprintf(stderr, " -l Show fingerprint of key file.\n"); 769 fprintf(stderr, " -p Change passphrase of private key file.\n"); 770 fprintf(stderr, " -q Quiet.\n"); 771 fprintf(stderr, " -y Read private key file and print public key.\n"); 772 fprintf(stderr, " -t type Specify type of key to create.\n"); 773 fprintf(stderr, " -B Show bubblebabble digest of key file.\n"); 774 fprintf(stderr, " -C comment Provide new comment.\n"); 775 fprintf(stderr, " -N phrase Provide new passphrase.\n"); 776 fprintf(stderr, " -P phrase Provide old passphrase.\n");
|
| 777#ifdef DNS 778 fprintf(stderr, " -r hostname Print DNS resource record.\n"); 779#endif /* DNS */
|
735#ifdef SMARTCARD 736 fprintf(stderr, " -D reader Download public key from smartcard.\n"); 737 fprintf(stderr, " -U reader Upload private key to smartcard.\n"); 738#endif /* SMARTCARD */ 739
| 780#ifdef SMARTCARD 781 fprintf(stderr, " -D reader Download public key from smartcard.\n"); 782 fprintf(stderr, " -U reader Upload private key to smartcard.\n"); 783#endif /* SMARTCARD */ 784
|
| 785 fprintf(stderr, " -G file Generate candidates for DH-GEX moduli\n"); 786 fprintf(stderr, " -T file Screen candidates for DH-GEX moduli\n"); 787
|
740 exit(1); 741} 742 743/* 744 * Main program for key management. 745 */ 746int 747main(int ac, char **av) 748{ 749 char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
| 788 exit(1); 789} 790 791/* 792 * Main program for key management. 793 */ 794int 795main(int ac, char **av) 796{ 797 char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
|
750 char *reader_id = NULL;
| 798 char out_file[MAXPATHLEN], *reader_id = NULL; 799 char *resource_record_hostname = NULL;
|
751 Key *private, *public; 752 struct passwd *pw; 753 struct stat st;
| 800 Key *private, *public; 801 struct passwd *pw; 802 struct stat st;
|
754 int opt, type, fd, download = 0;
| 803 int opt, type, fd, download = 0, memory = 0; 804 int generator_wanted = 0, trials = 100; 805 int do_gen_candidates = 0, do_screen_candidates = 0; 806 BIGNUM *start = NULL;
|
755 FILE *f; 756 757 extern int optind; 758 extern char *optarg; 759
| 807 FILE *f; 808 809 extern int optind; 810 extern char *optarg; 811
|
760 __progname = get_progname(av[0]);
| 812 __progname = ssh_get_progname(av[0]);
|
761 762 SSLeay_add_all_algorithms();
| 813 814 SSLeay_add_all_algorithms();
|
| 815 log_init(av[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1); 816
|
763 init_rng(); 764 seed_rng(); 765 766 /* we need this for the home * directory. */ 767 pw = getpwuid(getuid()); 768 if (!pw) { 769 printf("You don't exist, go away!\n"); 770 exit(1); 771 } 772 if (gethostname(hostname, sizeof(hostname)) < 0) { 773 perror("gethostname"); 774 exit(1); 775 } 776
| 817 init_rng(); 818 seed_rng(); 819 820 /* we need this for the home * directory. */ 821 pw = getpwuid(getuid()); 822 if (!pw) { 823 printf("You don't exist, go away!\n"); 824 exit(1); 825 } 826 if (gethostname(hostname, sizeof(hostname)) < 0) { 827 perror("gethostname"); 828 exit(1); 829 } 830
|
777 while ((opt = getopt(ac, av, "deiqpclBRxXyb:f:t:U:D:P:N:C:")) != -1) {
| 831 while ((opt = getopt(ac, av, 832 "degiqpclBRxXyb:f:t:U:D:P:N:C:r:g:T:G:M:S:a:W:")) != -1) {
|
778 switch (opt) { 779 case 'b': 780 bits = atoi(optarg); 781 if (bits < 512 || bits > 32768) { 782 printf("Bits has bad value.\n"); 783 exit(1); 784 } 785 break; 786 case 'l': 787 print_fingerprint = 1; 788 break; 789 case 'B': 790 print_bubblebabble = 1; 791 break; 792 case 'p': 793 change_passphrase = 1; 794 break; 795 case 'c': 796 change_comment = 1; 797 break; 798 case 'f': 799 strlcpy(identity_file, optarg, sizeof(identity_file)); 800 have_identity = 1; 801 break;
| 833 switch (opt) { 834 case 'b': 835 bits = atoi(optarg); 836 if (bits < 512 || bits > 32768) { 837 printf("Bits has bad value.\n"); 838 exit(1); 839 } 840 break; 841 case 'l': 842 print_fingerprint = 1; 843 break; 844 case 'B': 845 print_bubblebabble = 1; 846 break; 847 case 'p': 848 change_passphrase = 1; 849 break; 850 case 'c': 851 change_comment = 1; 852 break; 853 case 'f': 854 strlcpy(identity_file, optarg, sizeof(identity_file)); 855 have_identity = 1; 856 break;
|
| 857 case 'g': 858 print_generic = 1; 859 break;
|
802 case 'P': 803 identity_passphrase = optarg; 804 break; 805 case 'N': 806 identity_new_passphrase = optarg; 807 break; 808 case 'C': 809 identity_comment = optarg; 810 break; 811 case 'q': 812 quiet = 1; 813 break; 814 case 'R': 815 /* unused */ 816 exit(0); 817 break; 818 case 'e': 819 case 'x': 820 /* export key */ 821 convert_to_ssh2 = 1; 822 break; 823 case 'i': 824 case 'X': 825 /* import key */ 826 convert_from_ssh2 = 1; 827 break; 828 case 'y': 829 print_public = 1; 830 break; 831 case 'd': 832 key_type_name = "dsa"; 833 break; 834 case 't': 835 key_type_name = optarg; 836 break; 837 case 'D': 838 download = 1; 839 case 'U': 840 reader_id = optarg; 841 break;
| 860 case 'P': 861 identity_passphrase = optarg; 862 break; 863 case 'N': 864 identity_new_passphrase = optarg; 865 break; 866 case 'C': 867 identity_comment = optarg; 868 break; 869 case 'q': 870 quiet = 1; 871 break; 872 case 'R': 873 /* unused */ 874 exit(0); 875 break; 876 case 'e': 877 case 'x': 878 /* export key */ 879 convert_to_ssh2 = 1; 880 break; 881 case 'i': 882 case 'X': 883 /* import key */ 884 convert_from_ssh2 = 1; 885 break; 886 case 'y': 887 print_public = 1; 888 break; 889 case 'd': 890 key_type_name = "dsa"; 891 break; 892 case 't': 893 key_type_name = optarg; 894 break; 895 case 'D': 896 download = 1; 897 case 'U': 898 reader_id = optarg; 899 break;
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| 900 case 'r': 901 resource_record_hostname = optarg; 902 break; 903 case 'W': 904 generator_wanted = atoi(optarg); 905 if (generator_wanted < 1) 906 fatal("Desired generator has bad value."); 907 break; 908 case 'a': 909 trials = atoi(optarg); 910 if (trials < TRIAL_MINIMUM) { 911 fatal("Minimum primality trials is %d", 912 TRIAL_MINIMUM); 913 } 914 break; 915 case 'M': 916 memory = atoi(optarg); 917 if (memory != 0 && 918 (memory < LARGE_MINIMUM || memory > LARGE_MAXIMUM)) { 919 fatal("Invalid memory amount (min %ld, max %ld)", 920 LARGE_MINIMUM, LARGE_MAXIMUM); 921 } 922 break; 923 case 'G': 924 do_gen_candidates = 1; 925 strlcpy(out_file, optarg, sizeof(out_file)); 926 break; 927 case 'T': 928 do_screen_candidates = 1; 929 strlcpy(out_file, optarg, sizeof(out_file)); 930 break; 931 case 'S': 932 /* XXX - also compare length against bits */ 933 if (BN_hex2bn(&start, optarg) == 0) 934 fatal("Invalid start point."); 935 break;
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842 case '?': 843 default: 844 usage(); 845 } 846 } 847 if (optind < ac) { 848 printf("Too many arguments.\n"); 849 usage(); 850 } 851 if (change_passphrase && change_comment) { 852 printf("Can only have one of -p and -c.\n"); 853 usage(); 854 } 855 if (print_fingerprint || print_bubblebabble) 856 do_fingerprint(pw); 857 if (change_passphrase) 858 do_change_passphrase(pw); 859 if (change_comment) 860 do_change_comment(pw); 861 if (convert_to_ssh2) 862 do_convert_to_ssh2(pw); 863 if (convert_from_ssh2) 864 do_convert_from_ssh2(pw); 865 if (print_public) 866 do_print_public(pw);
| 936 case '?': 937 default: 938 usage(); 939 } 940 } 941 if (optind < ac) { 942 printf("Too many arguments.\n"); 943 usage(); 944 } 945 if (change_passphrase && change_comment) { 946 printf("Can only have one of -p and -c.\n"); 947 usage(); 948 } 949 if (print_fingerprint || print_bubblebabble) 950 do_fingerprint(pw); 951 if (change_passphrase) 952 do_change_passphrase(pw); 953 if (change_comment) 954 do_change_comment(pw); 955 if (convert_to_ssh2) 956 do_convert_to_ssh2(pw); 957 if (convert_from_ssh2) 958 do_convert_from_ssh2(pw); 959 if (print_public) 960 do_print_public(pw);
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| 961 if (resource_record_hostname != NULL) { 962#ifdef DNS 963 do_print_resource_record(pw, resource_record_hostname); 964#else /* DNS */ 965 fatal("no DNS support."); 966#endif /* DNS */ 967 }
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867 if (reader_id != NULL) { 868#ifdef SMARTCARD 869 if (download) 870 do_download(pw, reader_id); 871 else 872 do_upload(pw, reader_id); 873#else /* SMARTCARD */ 874 fatal("no support for smartcards."); 875#endif /* SMARTCARD */ 876 } 877
| 968 if (reader_id != NULL) { 969#ifdef SMARTCARD 970 if (download) 971 do_download(pw, reader_id); 972 else 973 do_upload(pw, reader_id); 974#else /* SMARTCARD */ 975 fatal("no support for smartcards."); 976#endif /* SMARTCARD */ 977 } 978
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| 979 if (do_gen_candidates) { 980 FILE *out = fopen(out_file, "w"); 981 982 if (out == NULL) { 983 error("Couldn't open modulus candidate file \"%s\": %s", 984 out_file, strerror(errno)); 985 return (1); 986 } 987 if (gen_candidates(out, memory, bits, start) != 0) 988 fatal("modulus candidate generation failed\n"); 989 990 return (0); 991 } 992 993 if (do_screen_candidates) { 994 FILE *in; 995 FILE *out = fopen(out_file, "w"); 996 997 if (have_identity && strcmp(identity_file, "-") != 0) { 998 if ((in = fopen(identity_file, "r")) == NULL) { 999 fatal("Couldn't open modulus candidate " 1000 "file \"%s\": %s", identity_file, 1001 strerror(errno)); 1002 } 1003 } else 1004 in = stdin; 1005 1006 if (out == NULL) { 1007 fatal("Couldn't open moduli file \"%s\": %s", 1008 out_file, strerror(errno)); 1009 } 1010 if (prime_test(in, out, trials, generator_wanted) != 0) 1011 fatal("modulus screening failed\n"); 1012 return (0); 1013 } 1014
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878 arc4random_stir(); 879 880 if (key_type_name == NULL) { 881 printf("You must specify a key type (-t).\n"); 882 usage(); 883 } 884 type = key_type_from_name(key_type_name); 885 if (type == KEY_UNSPEC) { 886 fprintf(stderr, "unknown key type %s\n", key_type_name); 887 exit(1); 888 } 889 if (!quiet) 890 printf("Generating public/private %s key pair.\n", key_type_name); 891 private = key_generate(type, bits); 892 if (private == NULL) { 893 fprintf(stderr, "key_generate failed"); 894 exit(1); 895 } 896 public = key_from_private(private); 897 898 if (!have_identity) 899 ask_filename(pw, "Enter file in which to save the key"); 900 901 /* Create ~/.ssh directory if it doesn\'t already exist. */ 902 snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR); 903 if (strstr(identity_file, dotsshdir) != NULL && 904 stat(dotsshdir, &st) < 0) { 905 if (mkdir(dotsshdir, 0700) < 0) 906 error("Could not create directory '%s'.", dotsshdir); 907 else if (!quiet) 908 printf("Created directory '%s'.\n", dotsshdir); 909 } 910 /* If the file already exists, ask the user to confirm. */ 911 if (stat(identity_file, &st) >= 0) { 912 char yesno[3]; 913 printf("%s already exists.\n", identity_file); 914 printf("Overwrite (y/n)? "); 915 fflush(stdout); 916 if (fgets(yesno, sizeof(yesno), stdin) == NULL) 917 exit(1); 918 if (yesno[0] != 'y' && yesno[0] != 'Y') 919 exit(1); 920 } 921 /* Ask for a passphrase (twice). */ 922 if (identity_passphrase) 923 passphrase1 = xstrdup(identity_passphrase); 924 else if (identity_new_passphrase) 925 passphrase1 = xstrdup(identity_new_passphrase); 926 else { 927passphrase_again: 928 passphrase1 = 929 read_passphrase("Enter passphrase (empty for no " 930 "passphrase): ", RP_ALLOW_STDIN); 931 passphrase2 = read_passphrase("Enter same passphrase again: ", 932 RP_ALLOW_STDIN); 933 if (strcmp(passphrase1, passphrase2) != 0) { 934 /* 935 * The passphrases do not match. Clear them and 936 * retry. 937 */ 938 memset(passphrase1, 0, strlen(passphrase1)); 939 memset(passphrase2, 0, strlen(passphrase2)); 940 xfree(passphrase1); 941 xfree(passphrase2); 942 printf("Passphrases do not match. Try again.\n"); 943 goto passphrase_again; 944 } 945 /* Clear the other copy of the passphrase. */ 946 memset(passphrase2, 0, strlen(passphrase2)); 947 xfree(passphrase2); 948 } 949 950 if (identity_comment) { 951 strlcpy(comment, identity_comment, sizeof(comment)); 952 } else { 953 /* Create default commend field for the passphrase. */ 954 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname); 955 } 956 957 /* Save the key with the given passphrase and comment. */ 958 if (!key_save_private(private, identity_file, passphrase1, comment)) { 959 printf("Saving the key failed: %s.\n", identity_file); 960 memset(passphrase1, 0, strlen(passphrase1)); 961 xfree(passphrase1); 962 exit(1); 963 } 964 /* Clear the passphrase. */ 965 memset(passphrase1, 0, strlen(passphrase1)); 966 xfree(passphrase1); 967 968 /* Clear the private key and the random number generator. */ 969 key_free(private); 970 arc4random_stir(); 971 972 if (!quiet) 973 printf("Your identification has been saved in %s.\n", identity_file); 974 975 strlcat(identity_file, ".pub", sizeof(identity_file)); 976 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); 977 if (fd == -1) { 978 printf("Could not save your public key in %s\n", identity_file); 979 exit(1); 980 } 981 f = fdopen(fd, "w"); 982 if (f == NULL) { 983 printf("fdopen %s failed", identity_file); 984 exit(1); 985 } 986 if (!key_write(public, f)) 987 fprintf(stderr, "write key failed"); 988 fprintf(f, " %s\n", comment); 989 fclose(f); 990 991 if (!quiet) { 992 char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX); 993 printf("Your public key has been saved in %s.\n", 994 identity_file); 995 printf("The key fingerprint is:\n"); 996 printf("%s %s\n", fp, comment); 997 xfree(fp); 998 } 999 1000 key_free(public); 1001 exit(0); 1002}
| 1015 arc4random_stir(); 1016 1017 if (key_type_name == NULL) { 1018 printf("You must specify a key type (-t).\n"); 1019 usage(); 1020 } 1021 type = key_type_from_name(key_type_name); 1022 if (type == KEY_UNSPEC) { 1023 fprintf(stderr, "unknown key type %s\n", key_type_name); 1024 exit(1); 1025 } 1026 if (!quiet) 1027 printf("Generating public/private %s key pair.\n", key_type_name); 1028 private = key_generate(type, bits); 1029 if (private == NULL) { 1030 fprintf(stderr, "key_generate failed"); 1031 exit(1); 1032 } 1033 public = key_from_private(private); 1034 1035 if (!have_identity) 1036 ask_filename(pw, "Enter file in which to save the key"); 1037 1038 /* Create ~/.ssh directory if it doesn\'t already exist. */ 1039 snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR); 1040 if (strstr(identity_file, dotsshdir) != NULL && 1041 stat(dotsshdir, &st) < 0) { 1042 if (mkdir(dotsshdir, 0700) < 0) 1043 error("Could not create directory '%s'.", dotsshdir); 1044 else if (!quiet) 1045 printf("Created directory '%s'.\n", dotsshdir); 1046 } 1047 /* If the file already exists, ask the user to confirm. */ 1048 if (stat(identity_file, &st) >= 0) { 1049 char yesno[3]; 1050 printf("%s already exists.\n", identity_file); 1051 printf("Overwrite (y/n)? "); 1052 fflush(stdout); 1053 if (fgets(yesno, sizeof(yesno), stdin) == NULL) 1054 exit(1); 1055 if (yesno[0] != 'y' && yesno[0] != 'Y') 1056 exit(1); 1057 } 1058 /* Ask for a passphrase (twice). */ 1059 if (identity_passphrase) 1060 passphrase1 = xstrdup(identity_passphrase); 1061 else if (identity_new_passphrase) 1062 passphrase1 = xstrdup(identity_new_passphrase); 1063 else { 1064passphrase_again: 1065 passphrase1 = 1066 read_passphrase("Enter passphrase (empty for no " 1067 "passphrase): ", RP_ALLOW_STDIN); 1068 passphrase2 = read_passphrase("Enter same passphrase again: ", 1069 RP_ALLOW_STDIN); 1070 if (strcmp(passphrase1, passphrase2) != 0) { 1071 /* 1072 * The passphrases do not match. Clear them and 1073 * retry. 1074 */ 1075 memset(passphrase1, 0, strlen(passphrase1)); 1076 memset(passphrase2, 0, strlen(passphrase2)); 1077 xfree(passphrase1); 1078 xfree(passphrase2); 1079 printf("Passphrases do not match. Try again.\n"); 1080 goto passphrase_again; 1081 } 1082 /* Clear the other copy of the passphrase. */ 1083 memset(passphrase2, 0, strlen(passphrase2)); 1084 xfree(passphrase2); 1085 } 1086 1087 if (identity_comment) { 1088 strlcpy(comment, identity_comment, sizeof(comment)); 1089 } else { 1090 /* Create default commend field for the passphrase. */ 1091 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname); 1092 } 1093 1094 /* Save the key with the given passphrase and comment. */ 1095 if (!key_save_private(private, identity_file, passphrase1, comment)) { 1096 printf("Saving the key failed: %s.\n", identity_file); 1097 memset(passphrase1, 0, strlen(passphrase1)); 1098 xfree(passphrase1); 1099 exit(1); 1100 } 1101 /* Clear the passphrase. */ 1102 memset(passphrase1, 0, strlen(passphrase1)); 1103 xfree(passphrase1); 1104 1105 /* Clear the private key and the random number generator. */ 1106 key_free(private); 1107 arc4random_stir(); 1108 1109 if (!quiet) 1110 printf("Your identification has been saved in %s.\n", identity_file); 1111 1112 strlcat(identity_file, ".pub", sizeof(identity_file)); 1113 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); 1114 if (fd == -1) { 1115 printf("Could not save your public key in %s\n", identity_file); 1116 exit(1); 1117 } 1118 f = fdopen(fd, "w"); 1119 if (f == NULL) { 1120 printf("fdopen %s failed", identity_file); 1121 exit(1); 1122 } 1123 if (!key_write(public, f)) 1124 fprintf(stderr, "write key failed"); 1125 fprintf(f, " %s\n", comment); 1126 fclose(f); 1127 1128 if (!quiet) { 1129 char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX); 1130 printf("Your public key has been saved in %s.\n", 1131 identity_file); 1132 printf("The key fingerprint is:\n"); 1133 printf("%s %s\n", fp, comment); 1134 xfree(fp); 1135 } 1136 1137 key_free(public); 1138 exit(0); 1139}
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