Annotation of src/usr.bin/ssh/ssh-keygen.c, Revision 1.215
1.215 ! dtucker 1: /* $OpenBSD: ssh-keygen.c,v 1.214 2012/05/23 03:28:28 djm Exp $ */
1.1 deraadt 2: /*
1.13 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Identity and host key generation and maintenance.
1.31 deraadt 7: *
8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.13 deraadt 13: */
1.1 deraadt 14:
1.136 stevesk 15: #include <sys/types.h>
1.174 dtucker 16: #include <sys/socket.h>
1.136 stevesk 17: #include <sys/stat.h>
1.151 stevesk 18: #include <sys/param.h>
1.19 markus 19:
20: #include <openssl/evp.h>
21: #include <openssl/pem.h>
1.145 stevesk 22:
1.148 stevesk 23: #include <errno.h>
1.147 stevesk 24: #include <fcntl.h>
1.145 stevesk 25: #include <pwd.h>
1.153 stevesk 26: #include <stdio.h>
1.152 stevesk 27: #include <stdlib.h>
1.150 stevesk 28: #include <string.h>
1.149 stevesk 29: #include <unistd.h>
1.1 deraadt 30:
31: #include "xmalloc.h"
1.19 markus 32: #include "key.h"
1.53 markus 33: #include "rsa.h"
1.19 markus 34: #include "authfile.h"
35: #include "uuencode.h"
1.32 markus 36: #include "buffer.h"
1.40 markus 37: #include "pathnames.h"
1.41 markus 38: #include "log.h"
1.114 djm 39: #include "misc.h"
1.119 djm 40: #include "match.h"
41: #include "hostfile.h"
1.146 stevesk 42: #include "dns.h"
1.179 djm 43: #include "ssh2.h"
1.32 markus 44:
1.177 markus 45: #ifdef ENABLE_PKCS11
46: #include "ssh-pkcs11.h"
1.106 djm 47: #endif
1.66 markus 48:
1.130 markus 49: /* Number of bits in the RSA/DSA key. This value can be set on the command line. */
50: #define DEFAULT_BITS 2048
51: #define DEFAULT_BITS_DSA 1024
1.203 naddy 52: #define DEFAULT_BITS_ECDSA 256
1.130 markus 53: u_int32_t bits = 0;
1.1 deraadt 54:
1.14 markus 55: /*
56: * Flag indicating that we just want to change the passphrase. This can be
57: * set on the command line.
58: */
1.1 deraadt 59: int change_passphrase = 0;
60:
1.14 markus 61: /*
62: * Flag indicating that we just want to change the comment. This can be set
63: * on the command line.
64: */
1.1 deraadt 65: int change_comment = 0;
66:
1.2 provos 67: int quiet = 0;
68:
1.169 grunk 69: int log_level = SYSLOG_LEVEL_INFO;
70:
1.119 djm 71: /* Flag indicating that we want to hash a known_hosts file */
72: int hash_hosts = 0;
73: /* Flag indicating that we want lookup a host in known_hosts file */
74: int find_host = 0;
75: /* Flag indicating that we want to delete a host from a known_hosts file */
76: int delete_host = 0;
77:
1.182 djm 78: /* Flag indicating that we want to show the contents of a certificate */
79: int show_cert = 0;
80:
1.8 markus 81: /* Flag indicating that we just want to see the key fingerprint */
82: int print_fingerprint = 0;
1.49 markus 83: int print_bubblebabble = 0;
1.8 markus 84:
1.10 markus 85: /* The identity file name, given on the command line or entered by the user. */
86: char identity_file[1024];
87: int have_identity = 0;
1.1 deraadt 88:
89: /* This is set to the passphrase if given on the command line. */
90: char *identity_passphrase = NULL;
91:
92: /* This is set to the new passphrase if given on the command line. */
93: char *identity_new_passphrase = NULL;
94:
95: /* This is set to the new comment if given on the command line. */
96: char *identity_comment = NULL;
97:
1.179 djm 98: /* Path to CA key when certifying keys. */
99: char *ca_key_path = NULL;
100:
1.186 djm 101: /* Certificate serial number */
102: long long cert_serial = 0;
103:
1.179 djm 104: /* Key type when certifying */
105: u_int cert_key_type = SSH2_CERT_TYPE_USER;
106:
107: /* "key ID" of signed key */
108: char *cert_key_id = NULL;
109:
110: /* Comma-separated list of principal names for certifying keys */
111: char *cert_principals = NULL;
112:
113: /* Validity period for certificates */
114: u_int64_t cert_valid_from = 0;
115: u_int64_t cert_valid_to = ~0ULL;
116:
1.186 djm 117: /* Certificate options */
1.190 djm 118: #define CERTOPT_X_FWD (1)
119: #define CERTOPT_AGENT_FWD (1<<1)
120: #define CERTOPT_PORT_FWD (1<<2)
121: #define CERTOPT_PTY (1<<3)
122: #define CERTOPT_USER_RC (1<<4)
123: #define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \
124: CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)
125: u_int32_t certflags_flags = CERTOPT_DEFAULT;
126: char *certflags_command = NULL;
127: char *certflags_src_addr = NULL;
1.179 djm 128:
1.193 djm 129: /* Conversion to/from various formats */
130: int convert_to = 0;
131: int convert_from = 0;
132: enum {
133: FMT_RFC4716,
134: FMT_PKCS8,
135: FMT_PEM
136: } convert_format = FMT_RFC4716;
1.19 markus 137: int print_public = 0;
1.105 jakob 138: int print_generic = 0;
1.33 markus 139:
1.87 djm 140: char *key_type_name = NULL;
1.19 markus 141:
1.197 djm 142: /* Load key from this PKCS#11 provider */
143: char *pkcs11provider = NULL;
1.193 djm 144:
1.10 markus 145: /* argv0 */
146: extern char *__progname;
1.1 deraadt 147:
1.19 markus 148: char hostname[MAXHOSTNAMELEN];
149:
1.115 djm 150: /* moduli.c */
1.124 avsm 151: int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
1.215 ! dtucker 152: int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *, unsigned long,
! 153: unsigned long);
1.115 djm 154:
1.63 itojun 155: static void
1.209 djm 156: type_bits_valid(int type, u_int32_t *bitsp)
1.206 stevesk 157: {
158: u_int maxbits;
159:
160: if (type == KEY_UNSPEC) {
161: fprintf(stderr, "unknown key type %s\n", key_type_name);
162: exit(1);
163: }
1.209 djm 164: if (*bitsp == 0) {
1.206 stevesk 165: if (type == KEY_DSA)
1.209 djm 166: *bitsp = DEFAULT_BITS_DSA;
1.206 stevesk 167: else if (type == KEY_ECDSA)
1.209 djm 168: *bitsp = DEFAULT_BITS_ECDSA;
1.206 stevesk 169: else
1.209 djm 170: *bitsp = DEFAULT_BITS;
1.206 stevesk 171: }
172: maxbits = (type == KEY_DSA) ?
173: OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
1.209 djm 174: if (*bitsp > maxbits) {
1.206 stevesk 175: fprintf(stderr, "key bits exceeds maximum %d\n", maxbits);
176: exit(1);
177: }
1.209 djm 178: if (type == KEY_DSA && *bitsp != 1024)
1.206 stevesk 179: fatal("DSA keys must be 1024 bits");
1.209 djm 180: else if (type != KEY_ECDSA && *bitsp < 768)
1.206 stevesk 181: fatal("Key must at least be 768 bits");
1.209 djm 182: else if (type == KEY_ECDSA && key_ecdsa_bits_to_nid(*bitsp) == -1)
1.206 stevesk 183: fatal("Invalid ECDSA key length - valid lengths are "
184: "256, 384 or 521 bits");
185: }
186:
187: static void
1.10 markus 188: ask_filename(struct passwd *pw, const char *prompt)
1.1 deraadt 189: {
1.12 markus 190: char buf[1024];
1.35 markus 191: char *name = NULL;
192:
1.92 stevesk 193: if (key_type_name == NULL)
1.40 markus 194: name = _PATH_SSH_CLIENT_ID_RSA;
1.140 deraadt 195: else {
1.92 stevesk 196: switch (key_type_from_name(key_type_name)) {
197: case KEY_RSA1:
198: name = _PATH_SSH_CLIENT_IDENTITY;
199: break;
1.186 djm 200: case KEY_DSA_CERT:
201: case KEY_DSA_CERT_V00:
1.92 stevesk 202: case KEY_DSA:
203: name = _PATH_SSH_CLIENT_ID_DSA;
204: break;
1.200 djm 205: case KEY_ECDSA_CERT:
206: case KEY_ECDSA:
207: name = _PATH_SSH_CLIENT_ID_ECDSA;
208: break;
1.186 djm 209: case KEY_RSA_CERT:
210: case KEY_RSA_CERT_V00:
1.92 stevesk 211: case KEY_RSA:
212: name = _PATH_SSH_CLIENT_ID_RSA;
213: break;
214: default:
1.173 tobias 215: fprintf(stderr, "bad key type\n");
1.92 stevesk 216: exit(1);
217: break;
218: }
1.140 deraadt 219: }
1.35 markus 220: snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
1.37 markus 221: fprintf(stderr, "%s (%s): ", prompt, identity_file);
1.12 markus 222: if (fgets(buf, sizeof(buf), stdin) == NULL)
223: exit(1);
1.162 gilles 224: buf[strcspn(buf, "\n")] = '\0';
1.12 markus 225: if (strcmp(buf, "") != 0)
226: strlcpy(identity_file, buf, sizeof(identity_file));
227: have_identity = 1;
1.7 markus 228: }
229:
1.63 itojun 230: static Key *
1.61 markus 231: load_identity(char *filename)
1.19 markus 232: {
1.52 markus 233: char *pass;
234: Key *prv;
235:
1.55 markus 236: prv = key_load_private(filename, "", NULL);
1.52 markus 237: if (prv == NULL) {
1.61 markus 238: if (identity_passphrase)
239: pass = xstrdup(identity_passphrase);
240: else
1.65 markus 241: pass = read_passphrase("Enter passphrase: ",
242: RP_ALLOW_STDIN);
1.52 markus 243: prv = key_load_private(filename, pass, NULL);
1.19 markus 244: memset(pass, 0, strlen(pass));
245: xfree(pass);
246: }
1.52 markus 247: return prv;
1.19 markus 248: }
249:
1.32 markus 250: #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
1.100 deraadt 251: #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
1.32 markus 252: #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
1.42 stevesk 253: #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
1.19 markus 254:
1.63 itojun 255: static void
1.193 djm 256: do_convert_to_ssh2(struct passwd *pw, Key *k)
1.19 markus 257: {
1.94 markus 258: u_int len;
1.36 markus 259: u_char *blob;
1.176 djm 260: char comment[61];
1.19 markus 261:
1.213 djm 262: if (k->type == KEY_RSA1) {
263: fprintf(stderr, "version 1 keys are not supported\n");
264: exit(1);
265: }
1.81 markus 266: if (key_to_blob(k, &blob, &len) <= 0) {
267: fprintf(stderr, "key_to_blob failed\n");
268: exit(1);
269: }
1.176 djm 270: /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
271: snprintf(comment, sizeof(comment),
272: "%u-bit %s, converted by %s@%s from OpenSSH",
1.59 markus 273: key_size(k), key_type(k),
1.19 markus 274: pw->pw_name, hostname);
1.176 djm 275:
276: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
277: fprintf(stdout, "Comment: \"%s\"\n", comment);
1.19 markus 278: dump_base64(stdout, blob, len);
1.32 markus 279: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
1.59 markus 280: key_free(k);
1.21 markus 281: xfree(blob);
1.19 markus 282: exit(0);
283: }
284:
1.63 itojun 285: static void
1.193 djm 286: do_convert_to_pkcs8(Key *k)
287: {
288: switch (key_type_plain(k->type)) {
1.213 djm 289: case KEY_RSA1:
1.193 djm 290: case KEY_RSA:
291: if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
292: fatal("PEM_write_RSA_PUBKEY failed");
293: break;
294: case KEY_DSA:
295: if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
296: fatal("PEM_write_DSA_PUBKEY failed");
297: break;
1.200 djm 298: case KEY_ECDSA:
299: if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
300: fatal("PEM_write_EC_PUBKEY failed");
301: break;
1.193 djm 302: default:
303: fatal("%s: unsupported key type %s", __func__, key_type(k));
304: }
305: exit(0);
306: }
307:
308: static void
309: do_convert_to_pem(Key *k)
310: {
311: switch (key_type_plain(k->type)) {
1.213 djm 312: case KEY_RSA1:
1.193 djm 313: case KEY_RSA:
314: if (!PEM_write_RSAPublicKey(stdout, k->rsa))
315: fatal("PEM_write_RSAPublicKey failed");
316: break;
317: #if notyet /* OpenSSH 0.9.8 lacks this function */
318: case KEY_DSA:
319: if (!PEM_write_DSAPublicKey(stdout, k->dsa))
320: fatal("PEM_write_DSAPublicKey failed");
321: break;
322: #endif
1.200 djm 323: /* XXX ECDSA? */
1.193 djm 324: default:
325: fatal("%s: unsupported key type %s", __func__, key_type(k));
326: }
327: exit(0);
328: }
329:
330: static void
331: do_convert_to(struct passwd *pw)
332: {
333: Key *k;
334: struct stat st;
335:
336: if (!have_identity)
337: ask_filename(pw, "Enter file in which the key is");
338: if (stat(identity_file, &st) < 0)
339: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
340: if ((k = key_load_public(identity_file, NULL)) == NULL) {
341: if ((k = load_identity(identity_file)) == NULL) {
342: fprintf(stderr, "load failed\n");
343: exit(1);
344: }
345: }
346:
347: switch (convert_format) {
348: case FMT_RFC4716:
349: do_convert_to_ssh2(pw, k);
350: break;
351: case FMT_PKCS8:
352: do_convert_to_pkcs8(k);
353: break;
354: case FMT_PEM:
355: do_convert_to_pem(k);
356: break;
357: default:
358: fatal("%s: unknown key format %d", __func__, convert_format);
359: }
360: exit(0);
361: }
362:
363: static void
1.32 markus 364: buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
365: {
1.116 avsm 366: u_int bignum_bits = buffer_get_int(b);
367: u_int bytes = (bignum_bits + 7) / 8;
1.53 markus 368:
1.32 markus 369: if (buffer_len(b) < bytes)
1.53 markus 370: fatal("buffer_get_bignum_bits: input buffer too small: "
371: "need %d have %d", bytes, buffer_len(b));
1.155 markus 372: if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL)
373: fatal("buffer_get_bignum_bits: BN_bin2bn failed");
1.32 markus 374: buffer_consume(b, bytes);
375: }
376:
1.63 itojun 377: static Key *
1.93 markus 378: do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
1.32 markus 379: {
380: Buffer b;
381: Key *key = NULL;
1.64 markus 382: char *type, *cipher;
1.69 stevesk 383: u_char *sig, data[] = "abcde12345";
1.62 markus 384: int magic, rlen, ktype, i1, i2, i3, i4;
1.64 markus 385: u_int slen;
1.62 markus 386: u_long e;
1.32 markus 387:
388: buffer_init(&b);
389: buffer_append(&b, blob, blen);
390:
1.160 stevesk 391: magic = buffer_get_int(&b);
1.32 markus 392: if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
393: error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC);
394: buffer_free(&b);
395: return NULL;
396: }
1.62 markus 397: i1 = buffer_get_int(&b);
1.32 markus 398: type = buffer_get_string(&b, NULL);
399: cipher = buffer_get_string(&b, NULL);
1.62 markus 400: i2 = buffer_get_int(&b);
401: i3 = buffer_get_int(&b);
402: i4 = buffer_get_int(&b);
1.158 stevesk 403: debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
1.32 markus 404: if (strcmp(cipher, "none") != 0) {
405: error("unsupported cipher %s", cipher);
406: xfree(cipher);
407: buffer_free(&b);
1.53 markus 408: xfree(type);
1.32 markus 409: return NULL;
410: }
411: xfree(cipher);
412:
1.53 markus 413: if (strstr(type, "dsa")) {
414: ktype = KEY_DSA;
415: } else if (strstr(type, "rsa")) {
416: ktype = KEY_RSA;
417: } else {
1.118 markus 418: buffer_free(&b);
1.53 markus 419: xfree(type);
1.32 markus 420: return NULL;
421: }
1.53 markus 422: key = key_new_private(ktype);
423: xfree(type);
424:
425: switch (key->type) {
426: case KEY_DSA:
427: buffer_get_bignum_bits(&b, key->dsa->p);
428: buffer_get_bignum_bits(&b, key->dsa->g);
429: buffer_get_bignum_bits(&b, key->dsa->q);
430: buffer_get_bignum_bits(&b, key->dsa->pub_key);
431: buffer_get_bignum_bits(&b, key->dsa->priv_key);
432: break;
433: case KEY_RSA:
1.160 stevesk 434: e = buffer_get_char(&b);
1.62 markus 435: debug("e %lx", e);
436: if (e < 30) {
437: e <<= 8;
438: e += buffer_get_char(&b);
439: debug("e %lx", e);
440: e <<= 8;
441: e += buffer_get_char(&b);
442: debug("e %lx", e);
443: }
444: if (!BN_set_word(key->rsa->e, e)) {
1.53 markus 445: buffer_free(&b);
446: key_free(key);
447: return NULL;
448: }
449: buffer_get_bignum_bits(&b, key->rsa->d);
450: buffer_get_bignum_bits(&b, key->rsa->n);
451: buffer_get_bignum_bits(&b, key->rsa->iqmp);
452: buffer_get_bignum_bits(&b, key->rsa->q);
453: buffer_get_bignum_bits(&b, key->rsa->p);
1.68 markus 454: rsa_generate_additional_parameters(key->rsa);
1.53 markus 455: break;
456: }
1.32 markus 457: rlen = buffer_len(&b);
1.85 deraadt 458: if (rlen != 0)
1.53 markus 459: error("do_convert_private_ssh2_from_blob: "
460: "remaining bytes in key blob %d", rlen);
1.32 markus 461: buffer_free(&b);
1.64 markus 462:
463: /* try the key */
464: key_sign(key, &sig, &slen, data, sizeof(data));
465: key_verify(key, sig, slen, data, sizeof(data));
466: xfree(sig);
1.32 markus 467: return key;
468: }
469:
1.137 dtucker 470: static int
471: get_line(FILE *fp, char *line, size_t len)
472: {
473: int c;
474: size_t pos = 0;
475:
476: line[0] = '\0';
477: while ((c = fgetc(fp)) != EOF) {
478: if (pos >= len - 1) {
479: fprintf(stderr, "input line too long.\n");
480: exit(1);
481: }
1.140 deraadt 482: switch (c) {
1.137 dtucker 483: case '\r':
484: c = fgetc(fp);
485: if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) {
486: fprintf(stderr, "unget: %s\n", strerror(errno));
487: exit(1);
488: }
489: return pos;
490: case '\n':
491: return pos;
492: }
493: line[pos++] = c;
494: line[pos] = '\0';
495: }
1.157 stevesk 496: /* We reached EOF */
497: return -1;
1.137 dtucker 498: }
499:
1.63 itojun 500: static void
1.193 djm 501: do_convert_from_ssh2(struct passwd *pw, Key **k, int *private)
1.19 markus 502: {
503: int blen;
1.98 markus 504: u_int len;
1.137 dtucker 505: char line[1024];
1.80 stevesk 506: u_char blob[8096];
1.19 markus 507: char encoded[8096];
1.193 djm 508: int escaped = 0;
1.19 markus 509: FILE *fp;
510:
1.191 djm 511: if ((fp = fopen(identity_file, "r")) == NULL)
512: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.19 markus 513: encoded[0] = '\0';
1.137 dtucker 514: while ((blen = get_line(fp, line, sizeof(line))) != -1) {
515: if (line[blen - 1] == '\\')
1.25 markus 516: escaped++;
1.19 markus 517: if (strncmp(line, "----", 4) == 0 ||
518: strstr(line, ": ") != NULL) {
1.32 markus 519: if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
1.193 djm 520: *private = 1;
1.64 markus 521: if (strstr(line, " END ") != NULL) {
522: break;
523: }
1.60 markus 524: /* fprintf(stderr, "ignore: %s", line); */
1.19 markus 525: continue;
526: }
1.25 markus 527: if (escaped) {
528: escaped--;
1.60 markus 529: /* fprintf(stderr, "escaped: %s", line); */
1.25 markus 530: continue;
1.19 markus 531: }
532: strlcat(encoded, line, sizeof(encoded));
533: }
1.98 markus 534: len = strlen(encoded);
535: if (((len % 4) == 3) &&
536: (encoded[len-1] == '=') &&
537: (encoded[len-2] == '=') &&
538: (encoded[len-3] == '='))
539: encoded[len-3] = '\0';
1.91 stevesk 540: blen = uudecode(encoded, blob, sizeof(blob));
1.19 markus 541: if (blen < 0) {
542: fprintf(stderr, "uudecode failed.\n");
543: exit(1);
544: }
1.193 djm 545: *k = *private ?
1.32 markus 546: do_convert_private_ssh2_from_blob(blob, blen) :
1.33 markus 547: key_from_blob(blob, blen);
1.193 djm 548: if (*k == NULL) {
1.32 markus 549: fprintf(stderr, "decode blob failed.\n");
550: exit(1);
551: }
1.193 djm 552: fclose(fp);
553: }
554:
555: static void
556: do_convert_from_pkcs8(Key **k, int *private)
557: {
558: EVP_PKEY *pubkey;
559: FILE *fp;
560:
561: if ((fp = fopen(identity_file, "r")) == NULL)
562: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
563: if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
564: fatal("%s: %s is not a recognised public key format", __func__,
565: identity_file);
566: }
567: fclose(fp);
568: switch (EVP_PKEY_type(pubkey->type)) {
569: case EVP_PKEY_RSA:
570: *k = key_new(KEY_UNSPEC);
571: (*k)->type = KEY_RSA;
572: (*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
573: break;
574: case EVP_PKEY_DSA:
575: *k = key_new(KEY_UNSPEC);
576: (*k)->type = KEY_DSA;
577: (*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
578: break;
1.200 djm 579: case EVP_PKEY_EC:
580: *k = key_new(KEY_UNSPEC);
581: (*k)->type = KEY_ECDSA;
582: (*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
1.204 djm 583: (*k)->ecdsa_nid = key_ecdsa_key_to_nid((*k)->ecdsa);
1.200 djm 584: break;
1.193 djm 585: default:
586: fatal("%s: unsupported pubkey type %d", __func__,
587: EVP_PKEY_type(pubkey->type));
588: }
589: EVP_PKEY_free(pubkey);
590: return;
591: }
592:
593: static void
594: do_convert_from_pem(Key **k, int *private)
595: {
596: FILE *fp;
597: RSA *rsa;
598: #ifdef notyet
599: DSA *dsa;
600: #endif
601:
602: if ((fp = fopen(identity_file, "r")) == NULL)
603: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
604: if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
605: *k = key_new(KEY_UNSPEC);
606: (*k)->type = KEY_RSA;
607: (*k)->rsa = rsa;
608: fclose(fp);
609: return;
610: }
611: #if notyet /* OpenSSH 0.9.8 lacks this function */
612: rewind(fp);
613: if ((dsa = PEM_read_DSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
614: *k = key_new(KEY_UNSPEC);
615: (*k)->type = KEY_DSA;
616: (*k)->dsa = dsa;
617: fclose(fp);
618: return;
619: }
1.200 djm 620: /* XXX ECDSA */
1.193 djm 621: #endif
622: fatal("%s: unrecognised raw private key format", __func__);
623: }
624:
625: static void
626: do_convert_from(struct passwd *pw)
627: {
628: Key *k = NULL;
1.195 djm 629: int private = 0, ok = 0;
1.193 djm 630: struct stat st;
631:
632: if (!have_identity)
633: ask_filename(pw, "Enter file in which the key is");
634: if (stat(identity_file, &st) < 0)
635: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
636:
637: switch (convert_format) {
638: case FMT_RFC4716:
639: do_convert_from_ssh2(pw, &k, &private);
640: break;
641: case FMT_PKCS8:
642: do_convert_from_pkcs8(&k, &private);
643: break;
644: case FMT_PEM:
645: do_convert_from_pem(&k, &private);
646: break;
647: default:
648: fatal("%s: unknown key format %d", __func__, convert_format);
649: }
650:
651: if (!private)
652: ok = key_write(k, stdout);
653: if (ok)
654: fprintf(stdout, "\n");
655: else {
656: switch (k->type) {
657: case KEY_DSA:
658: ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
659: NULL, 0, NULL, NULL);
660: break;
1.200 djm 661: case KEY_ECDSA:
662: ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
663: NULL, 0, NULL, NULL);
664: break;
1.193 djm 665: case KEY_RSA:
666: ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
667: NULL, 0, NULL, NULL);
668: break;
669: default:
670: fatal("%s: unsupported key type %s", __func__,
671: key_type(k));
672: }
673: }
674:
1.32 markus 675: if (!ok) {
1.173 tobias 676: fprintf(stderr, "key write failed\n");
1.32 markus 677: exit(1);
678: }
1.19 markus 679: key_free(k);
680: exit(0);
681: }
682:
1.63 itojun 683: static void
1.19 markus 684: do_print_public(struct passwd *pw)
685: {
1.52 markus 686: Key *prv;
1.19 markus 687: struct stat st;
688:
689: if (!have_identity)
690: ask_filename(pw, "Enter file in which the key is");
691: if (stat(identity_file, &st) < 0) {
692: perror(identity_file);
693: exit(1);
694: }
1.61 markus 695: prv = load_identity(identity_file);
1.52 markus 696: if (prv == NULL) {
1.19 markus 697: fprintf(stderr, "load failed\n");
698: exit(1);
699: }
1.52 markus 700: if (!key_write(prv, stdout))
1.19 markus 701: fprintf(stderr, "key_write failed");
1.52 markus 702: key_free(prv);
1.19 markus 703: fprintf(stdout, "\n");
704: exit(0);
705: }
706:
1.66 markus 707: static void
1.197 djm 708: do_download(struct passwd *pw)
1.75 markus 709: {
1.177 markus 710: #ifdef ENABLE_PKCS11
1.97 markus 711: Key **keys = NULL;
1.177 markus 712: int i, nkeys;
1.75 markus 713:
1.177 markus 714: pkcs11_init(0);
715: nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
716: if (nkeys <= 0)
717: fatal("cannot read public key from pkcs11");
718: for (i = 0; i < nkeys; i++) {
1.97 markus 719: key_write(keys[i], stdout);
720: key_free(keys[i]);
721: fprintf(stdout, "\n");
722: }
723: xfree(keys);
1.177 markus 724: pkcs11_terminate();
1.75 markus 725: exit(0);
1.177 markus 726: #else
727: fatal("no pkcs11 support");
728: #endif /* ENABLE_PKCS11 */
1.75 markus 729: }
1.66 markus 730:
1.63 itojun 731: static void
1.8 markus 732: do_fingerprint(struct passwd *pw)
733: {
1.15 markus 734: FILE *f;
1.19 markus 735: Key *public;
1.167 grunk 736: char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra;
1.165 djm 737: int i, skip = 0, num = 0, invalid = 1;
1.84 stevesk 738: enum fp_rep rep;
739: enum fp_type fptype;
1.12 markus 740: struct stat st;
741:
1.52 markus 742: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
743: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
1.49 markus 744:
1.12 markus 745: if (!have_identity)
746: ask_filename(pw, "Enter file in which the key is");
747: if (stat(identity_file, &st) < 0) {
748: perror(identity_file);
749: exit(1);
750: }
1.52 markus 751: public = key_load_public(identity_file, &comment);
752: if (public != NULL) {
753: fp = key_fingerprint(public, fptype, rep);
1.175 djm 754: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.170 grunk 755: printf("%u %s %s (%s)\n", key_size(public), fp, comment,
756: key_type(public));
1.169 grunk 757: if (log_level >= SYSLOG_LEVEL_VERBOSE)
758: printf("%s\n", ra);
1.33 markus 759: key_free(public);
760: xfree(comment);
1.167 grunk 761: xfree(ra);
1.49 markus 762: xfree(fp);
1.15 markus 763: exit(0);
764: }
1.144 markus 765: if (comment) {
1.52 markus 766: xfree(comment);
1.144 markus 767: comment = NULL;
768: }
1.15 markus 769:
1.191 djm 770: if ((f = fopen(identity_file, "r")) == NULL)
771: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
772:
773: while (fgets(line, sizeof(line), f)) {
774: if ((cp = strchr(line, '\n')) == NULL) {
775: error("line %d too long: %.40s...",
776: num + 1, line);
777: skip = 1;
778: continue;
779: }
780: num++;
781: if (skip) {
782: skip = 0;
783: continue;
784: }
785: *cp = '\0';
786:
787: /* Skip leading whitespace, empty and comment lines. */
788: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
789: ;
790: if (!*cp || *cp == '\n' || *cp == '#')
791: continue;
792: i = strtol(cp, &ep, 10);
793: if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
794: int quoted = 0;
795: comment = cp;
796: for (; *cp && (quoted || (*cp != ' ' &&
797: *cp != '\t')); cp++) {
798: if (*cp == '\\' && cp[1] == '"')
799: cp++; /* Skip both */
800: else if (*cp == '"')
801: quoted = !quoted;
1.15 markus 802: }
1.191 djm 803: if (!*cp)
1.15 markus 804: continue;
1.191 djm 805: *cp++ = '\0';
806: }
807: ep = cp;
808: public = key_new(KEY_RSA1);
809: if (key_read(public, &cp) != 1) {
810: cp = ep;
811: key_free(public);
812: public = key_new(KEY_UNSPEC);
1.38 markus 813: if (key_read(public, &cp) != 1) {
814: key_free(public);
1.191 djm 815: continue;
1.12 markus 816: }
817: }
1.191 djm 818: comment = *cp ? cp : comment;
819: fp = key_fingerprint(public, fptype, rep);
820: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
821: printf("%u %s %s (%s)\n", key_size(public), fp,
822: comment ? comment : "no comment", key_type(public));
823: if (log_level >= SYSLOG_LEVEL_VERBOSE)
824: printf("%s\n", ra);
825: xfree(ra);
826: xfree(fp);
827: key_free(public);
828: invalid = 0;
1.15 markus 829: }
1.191 djm 830: fclose(f);
831:
1.15 markus 832: if (invalid) {
1.83 markus 833: printf("%s is not a public key file.\n", identity_file);
1.15 markus 834: exit(1);
1.12 markus 835: }
836: exit(0);
1.8 markus 837: }
838:
1.119 djm 839: static void
1.206 stevesk 840: do_gen_all_hostkeys(struct passwd *pw)
841: {
842: struct {
843: char *key_type;
844: char *key_type_display;
845: char *path;
846: } key_types[] = {
847: { "rsa1", "RSA1", _PATH_HOST_KEY_FILE },
848: { "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
849: { "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
850: { "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
851: { NULL, NULL, NULL }
852: };
853:
854: int first = 0;
855: struct stat st;
856: Key *private, *public;
857: char comment[1024];
858: int i, type, fd;
859: FILE *f;
860:
861: for (i = 0; key_types[i].key_type; i++) {
862: if (stat(key_types[i].path, &st) == 0)
863: continue;
864: if (errno != ENOENT) {
865: printf("Could not stat %s: %s", key_types[i].path,
866: strerror(errno));
867: first = 0;
868: continue;
869: }
870:
871: if (first == 0) {
872: first = 1;
873: printf("%s: generating new host keys: ", __progname);
874: }
875: printf("%s ", key_types[i].key_type_display);
876: fflush(stdout);
877: arc4random_stir();
878: type = key_type_from_name(key_types[i].key_type);
879: strlcpy(identity_file, key_types[i].path, sizeof(identity_file));
880: bits = 0;
881: type_bits_valid(type, &bits);
882: private = key_generate(type, bits);
883: if (private == NULL) {
884: fprintf(stderr, "key_generate failed\n");
885: first = 0;
886: continue;
887: }
888: public = key_from_private(private);
889: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
890: hostname);
891: if (!key_save_private(private, identity_file, "", comment)) {
892: printf("Saving the key failed: %s.\n", identity_file);
893: key_free(private);
894: key_free(public);
895: first = 0;
896: continue;
897: }
898: key_free(private);
899: arc4random_stir();
900: strlcat(identity_file, ".pub", sizeof(identity_file));
901: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
902: if (fd == -1) {
903: printf("Could not save your public key in %s\n",
904: identity_file);
905: key_free(public);
906: first = 0;
907: continue;
908: }
909: f = fdopen(fd, "w");
910: if (f == NULL) {
911: printf("fdopen %s failed\n", identity_file);
912: key_free(public);
913: first = 0;
914: continue;
915: }
916: if (!key_write(public, f)) {
917: fprintf(stderr, "write key failed\n");
918: key_free(public);
919: first = 0;
920: continue;
921: }
922: fprintf(f, " %s\n", comment);
923: fclose(f);
924: key_free(public);
925:
926: }
927: if (first != 0)
928: printf("\n");
929: }
930:
931: static void
1.179 djm 932: printhost(FILE *f, const char *name, Key *public, int ca, int hash)
1.119 djm 933: {
1.166 djm 934: if (print_fingerprint) {
935: enum fp_rep rep;
936: enum fp_type fptype;
1.167 grunk 937: char *fp, *ra;
1.166 djm 938:
939: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
940: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
941: fp = key_fingerprint(public, fptype, rep);
1.175 djm 942: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.171 sthen 943: printf("%u %s %s (%s)\n", key_size(public), fp, name,
944: key_type(public));
945: if (log_level >= SYSLOG_LEVEL_VERBOSE)
946: printf("%s\n", ra);
1.167 grunk 947: xfree(ra);
1.166 djm 948: xfree(fp);
949: } else {
950: if (hash && (name = host_hash(name, NULL, 0)) == NULL)
951: fatal("hash_host failed");
1.179 djm 952: fprintf(f, "%s%s%s ", ca ? CA_MARKER : "", ca ? " " : "", name);
1.166 djm 953: if (!key_write(public, f))
954: fatal("key_write failed");
955: fprintf(f, "\n");
956: }
1.119 djm 957: }
958:
959: static void
960: do_known_hosts(struct passwd *pw, const char *name)
961: {
962: FILE *in, *out = stdout;
1.179 djm 963: Key *pub;
1.119 djm 964: char *cp, *cp2, *kp, *kp2;
965: char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN];
1.165 djm 966: int c, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0;
1.179 djm 967: int ca;
1.119 djm 968:
969: if (!have_identity) {
970: cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
971: if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
972: sizeof(identity_file))
973: fatal("Specified known hosts path too long");
974: xfree(cp);
975: have_identity = 1;
976: }
977: if ((in = fopen(identity_file, "r")) == NULL)
1.191 djm 978: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.119 djm 979:
980: /*
981: * Find hosts goes to stdout, hash and deletions happen in-place
982: * A corner case is ssh-keygen -HF foo, which should go to stdout
983: */
984: if (!find_host && (hash_hosts || delete_host)) {
985: if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
986: strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
987: strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
988: strlcat(old, ".old", sizeof(old)) >= sizeof(old))
989: fatal("known_hosts path too long");
990: umask(077);
991: if ((c = mkstemp(tmp)) == -1)
992: fatal("mkstemp: %s", strerror(errno));
993: if ((out = fdopen(c, "w")) == NULL) {
994: c = errno;
995: unlink(tmp);
996: fatal("fdopen: %s", strerror(c));
997: }
998: inplace = 1;
999: }
1000:
1001: while (fgets(line, sizeof(line), in)) {
1.163 chl 1002: if ((cp = strchr(line, '\n')) == NULL) {
1.165 djm 1003: error("line %d too long: %.40s...", num + 1, line);
1.119 djm 1004: skip = 1;
1005: invalid = 1;
1006: continue;
1007: }
1.163 chl 1008: num++;
1.119 djm 1009: if (skip) {
1010: skip = 0;
1011: continue;
1012: }
1.163 chl 1013: *cp = '\0';
1.119 djm 1014:
1015: /* Skip leading whitespace, empty and comment lines. */
1016: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
1017: ;
1018: if (!*cp || *cp == '\n' || *cp == '#') {
1019: if (inplace)
1020: fprintf(out, "%s\n", cp);
1021: continue;
1022: }
1.179 djm 1023: /* Check whether this is a CA key */
1024: if (strncasecmp(cp, CA_MARKER, sizeof(CA_MARKER) - 1) == 0 &&
1025: (cp[sizeof(CA_MARKER) - 1] == ' ' ||
1026: cp[sizeof(CA_MARKER) - 1] == '\t')) {
1027: ca = 1;
1028: cp += sizeof(CA_MARKER);
1029: } else
1030: ca = 0;
1031:
1.119 djm 1032: /* Find the end of the host name portion. */
1033: for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++)
1034: ;
1.179 djm 1035:
1.119 djm 1036: if (*kp == '\0' || *(kp + 1) == '\0') {
1037: error("line %d missing key: %.40s...",
1038: num, line);
1039: invalid = 1;
1040: continue;
1041: }
1042: *kp++ = '\0';
1043: kp2 = kp;
1044:
1.179 djm 1045: pub = key_new(KEY_RSA1);
1046: if (key_read(pub, &kp) != 1) {
1.119 djm 1047: kp = kp2;
1.179 djm 1048: key_free(pub);
1049: pub = key_new(KEY_UNSPEC);
1050: if (key_read(pub, &kp) != 1) {
1.119 djm 1051: error("line %d invalid key: %.40s...",
1052: num, line);
1.179 djm 1053: key_free(pub);
1.119 djm 1054: invalid = 1;
1055: continue;
1056: }
1057: }
1058:
1059: if (*cp == HASH_DELIM) {
1060: if (find_host || delete_host) {
1061: cp2 = host_hash(name, cp, strlen(cp));
1062: if (cp2 == NULL) {
1063: error("line %d: invalid hashed "
1064: "name: %.64s...", num, line);
1065: invalid = 1;
1066: continue;
1067: }
1068: c = (strcmp(cp2, cp) == 0);
1069: if (find_host && c) {
1070: printf("# Host %s found: "
1.179 djm 1071: "line %d type %s%s\n", name,
1072: num, key_type(pub),
1073: ca ? " (CA key)" : "");
1074: printhost(out, cp, pub, ca, 0);
1.119 djm 1075: }
1.179 djm 1076: if (delete_host && !c && !ca)
1077: printhost(out, cp, pub, ca, 0);
1.119 djm 1078: } else if (hash_hosts)
1.179 djm 1079: printhost(out, cp, pub, ca, 0);
1.119 djm 1080: } else {
1081: if (find_host || delete_host) {
1082: c = (match_hostname(name, cp,
1083: strlen(cp)) == 1);
1084: if (find_host && c) {
1085: printf("# Host %s found: "
1.179 djm 1086: "line %d type %s%s\n", name,
1087: num, key_type(pub),
1088: ca ? " (CA key)" : "");
1089: printhost(out, name, pub,
1090: ca, hash_hosts && !ca);
1.119 djm 1091: }
1.179 djm 1092: if (delete_host && !c && !ca)
1093: printhost(out, cp, pub, ca, 0);
1.119 djm 1094: } else if (hash_hosts) {
1.121 deraadt 1095: for (cp2 = strsep(&cp, ",");
1.119 djm 1096: cp2 != NULL && *cp2 != '\0';
1.120 djm 1097: cp2 = strsep(&cp, ",")) {
1.179 djm 1098: if (ca) {
1099: fprintf(stderr, "Warning: "
1100: "ignoring CA key for host: "
1101: "%.64s\n", cp2);
1102: printhost(out, cp2, pub, ca, 0);
1103: } else if (strcspn(cp2, "*?!") !=
1104: strlen(cp2)) {
1.120 djm 1105: fprintf(stderr, "Warning: "
1106: "ignoring host name with "
1107: "metacharacters: %.64s\n",
1108: cp2);
1.179 djm 1109: printhost(out, cp2, pub, ca, 0);
1110: } else
1111: printhost(out, cp2, pub, ca, 1);
1.120 djm 1112: }
1.119 djm 1113: has_unhashed = 1;
1114: }
1115: }
1.179 djm 1116: key_free(pub);
1.119 djm 1117: }
1118: fclose(in);
1119:
1120: if (invalid) {
1.165 djm 1121: fprintf(stderr, "%s is not a valid known_hosts file.\n",
1.119 djm 1122: identity_file);
1123: if (inplace) {
1124: fprintf(stderr, "Not replacing existing known_hosts "
1.122 markus 1125: "file because of errors\n");
1.119 djm 1126: fclose(out);
1127: unlink(tmp);
1128: }
1129: exit(1);
1130: }
1131:
1132: if (inplace) {
1133: fclose(out);
1134:
1135: /* Backup existing file */
1136: if (unlink(old) == -1 && errno != ENOENT)
1137: fatal("unlink %.100s: %s", old, strerror(errno));
1138: if (link(identity_file, old) == -1)
1139: fatal("link %.100s to %.100s: %s", identity_file, old,
1140: strerror(errno));
1141: /* Move new one into place */
1142: if (rename(tmp, identity_file) == -1) {
1143: error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
1144: strerror(errno));
1145: unlink(tmp);
1146: unlink(old);
1147: exit(1);
1148: }
1149:
1150: fprintf(stderr, "%s updated.\n", identity_file);
1151: fprintf(stderr, "Original contents retained as %s\n", old);
1152: if (has_unhashed) {
1153: fprintf(stderr, "WARNING: %s contains unhashed "
1154: "entries\n", old);
1155: fprintf(stderr, "Delete this file to ensure privacy "
1.128 djm 1156: "of hostnames\n");
1.119 djm 1157: }
1158: }
1159:
1160: exit(0);
1161: }
1162:
1.13 deraadt 1163: /*
1164: * Perform changing a passphrase. The argument is the passwd structure
1165: * for the current user.
1166: */
1.63 itojun 1167: static void
1.7 markus 1168: do_change_passphrase(struct passwd *pw)
1169: {
1.12 markus 1170: char *comment;
1171: char *old_passphrase, *passphrase1, *passphrase2;
1172: struct stat st;
1.19 markus 1173: Key *private;
1.12 markus 1174:
1175: if (!have_identity)
1176: ask_filename(pw, "Enter file in which the key is");
1177: if (stat(identity_file, &st) < 0) {
1178: perror(identity_file);
1179: exit(1);
1180: }
1181: /* Try to load the file with empty passphrase. */
1.52 markus 1182: private = key_load_private(identity_file, "", &comment);
1183: if (private == NULL) {
1.12 markus 1184: if (identity_passphrase)
1185: old_passphrase = xstrdup(identity_passphrase);
1186: else
1.65 markus 1187: old_passphrase =
1188: read_passphrase("Enter old passphrase: ",
1189: RP_ALLOW_STDIN);
1190: private = key_load_private(identity_file, old_passphrase,
1191: &comment);
1.52 markus 1192: memset(old_passphrase, 0, strlen(old_passphrase));
1193: xfree(old_passphrase);
1194: if (private == NULL) {
1.12 markus 1195: printf("Bad passphrase.\n");
1196: exit(1);
1197: }
1198: }
1199: printf("Key has comment '%s'\n", comment);
1200:
1201: /* Ask the new passphrase (twice). */
1202: if (identity_new_passphrase) {
1203: passphrase1 = xstrdup(identity_new_passphrase);
1204: passphrase2 = NULL;
1205: } else {
1206: passphrase1 =
1.65 markus 1207: read_passphrase("Enter new passphrase (empty for no "
1208: "passphrase): ", RP_ALLOW_STDIN);
1209: passphrase2 = read_passphrase("Enter same passphrase again: ",
1.86 deraadt 1210: RP_ALLOW_STDIN);
1.12 markus 1211:
1212: /* Verify that they are the same. */
1213: if (strcmp(passphrase1, passphrase2) != 0) {
1214: memset(passphrase1, 0, strlen(passphrase1));
1215: memset(passphrase2, 0, strlen(passphrase2));
1216: xfree(passphrase1);
1217: xfree(passphrase2);
1218: printf("Pass phrases do not match. Try again.\n");
1219: exit(1);
1220: }
1221: /* Destroy the other copy. */
1222: memset(passphrase2, 0, strlen(passphrase2));
1223: xfree(passphrase2);
1224: }
1225:
1226: /* Save the file using the new passphrase. */
1.52 markus 1227: if (!key_save_private(private, identity_file, passphrase1, comment)) {
1.56 markus 1228: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 1229: memset(passphrase1, 0, strlen(passphrase1));
1230: xfree(passphrase1);
1.19 markus 1231: key_free(private);
1.12 markus 1232: xfree(comment);
1233: exit(1);
1234: }
1235: /* Destroy the passphrase and the copy of the key in memory. */
1236: memset(passphrase1, 0, strlen(passphrase1));
1237: xfree(passphrase1);
1.19 markus 1238: key_free(private); /* Destroys contents */
1.12 markus 1239: xfree(comment);
1.1 deraadt 1240:
1.12 markus 1241: printf("Your identification has been saved with the new passphrase.\n");
1242: exit(0);
1.1 deraadt 1243: }
1244:
1.105 jakob 1245: /*
1246: * Print the SSHFP RR.
1247: */
1.138 jakob 1248: static int
1249: do_print_resource_record(struct passwd *pw, char *fname, char *hname)
1.105 jakob 1250: {
1251: Key *public;
1252: char *comment = NULL;
1253: struct stat st;
1254:
1.138 jakob 1255: if (fname == NULL)
1.105 jakob 1256: ask_filename(pw, "Enter file in which the key is");
1.138 jakob 1257: if (stat(fname, &st) < 0) {
1258: if (errno == ENOENT)
1259: return 0;
1260: perror(fname);
1.105 jakob 1261: exit(1);
1262: }
1.138 jakob 1263: public = key_load_public(fname, &comment);
1.105 jakob 1264: if (public != NULL) {
1.116 avsm 1265: export_dns_rr(hname, public, stdout, print_generic);
1.105 jakob 1266: key_free(public);
1267: xfree(comment);
1.138 jakob 1268: return 1;
1.105 jakob 1269: }
1270: if (comment)
1271: xfree(comment);
1272:
1.138 jakob 1273: printf("failed to read v2 public key from %s.\n", fname);
1.105 jakob 1274: exit(1);
1275: }
1276:
1.13 deraadt 1277: /*
1278: * Change the comment of a private key file.
1279: */
1.63 itojun 1280: static void
1.2 provos 1281: do_change_comment(struct passwd *pw)
1.1 deraadt 1282: {
1.46 deraadt 1283: char new_comment[1024], *comment, *passphrase;
1.52 markus 1284: Key *private;
1285: Key *public;
1.12 markus 1286: struct stat st;
1287: FILE *f;
1.46 deraadt 1288: int fd;
1.12 markus 1289:
1290: if (!have_identity)
1291: ask_filename(pw, "Enter file in which the key is");
1292: if (stat(identity_file, &st) < 0) {
1293: perror(identity_file);
1294: exit(1);
1295: }
1.52 markus 1296: private = key_load_private(identity_file, "", &comment);
1297: if (private == NULL) {
1.12 markus 1298: if (identity_passphrase)
1299: passphrase = xstrdup(identity_passphrase);
1300: else if (identity_new_passphrase)
1301: passphrase = xstrdup(identity_new_passphrase);
1302: else
1.65 markus 1303: passphrase = read_passphrase("Enter passphrase: ",
1304: RP_ALLOW_STDIN);
1.12 markus 1305: /* Try to load using the passphrase. */
1.52 markus 1306: private = key_load_private(identity_file, passphrase, &comment);
1307: if (private == NULL) {
1.12 markus 1308: memset(passphrase, 0, strlen(passphrase));
1309: xfree(passphrase);
1310: printf("Bad passphrase.\n");
1311: exit(1);
1312: }
1.52 markus 1313: } else {
1314: passphrase = xstrdup("");
1.12 markus 1315: }
1.52 markus 1316: if (private->type != KEY_RSA1) {
1317: fprintf(stderr, "Comments are only supported for RSA1 keys.\n");
1318: key_free(private);
1319: exit(1);
1.86 deraadt 1320: }
1.12 markus 1321: printf("Key now has comment '%s'\n", comment);
1322:
1323: if (identity_comment) {
1324: strlcpy(new_comment, identity_comment, sizeof(new_comment));
1325: } else {
1326: printf("Enter new comment: ");
1327: fflush(stdout);
1328: if (!fgets(new_comment, sizeof(new_comment), stdin)) {
1329: memset(passphrase, 0, strlen(passphrase));
1.19 markus 1330: key_free(private);
1.12 markus 1331: exit(1);
1332: }
1.162 gilles 1333: new_comment[strcspn(new_comment, "\n")] = '\0';
1.12 markus 1334: }
1335:
1336: /* Save the file using the new passphrase. */
1.52 markus 1337: if (!key_save_private(private, identity_file, passphrase, new_comment)) {
1.56 markus 1338: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 1339: memset(passphrase, 0, strlen(passphrase));
1340: xfree(passphrase);
1.19 markus 1341: key_free(private);
1.12 markus 1342: xfree(comment);
1343: exit(1);
1344: }
1345: memset(passphrase, 0, strlen(passphrase));
1346: xfree(passphrase);
1.52 markus 1347: public = key_from_private(private);
1.19 markus 1348: key_free(private);
1.12 markus 1349:
1350: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 1351: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1352: if (fd == -1) {
1.12 markus 1353: printf("Could not save your public key in %s\n", identity_file);
1354: exit(1);
1355: }
1.46 deraadt 1356: f = fdopen(fd, "w");
1357: if (f == NULL) {
1.173 tobias 1358: printf("fdopen %s failed\n", identity_file);
1.46 deraadt 1359: exit(1);
1360: }
1.19 markus 1361: if (!key_write(public, f))
1.173 tobias 1362: fprintf(stderr, "write key failed\n");
1.19 markus 1363: key_free(public);
1364: fprintf(f, " %s\n", new_comment);
1.12 markus 1365: fclose(f);
1.1 deraadt 1366:
1.12 markus 1367: xfree(comment);
1.1 deraadt 1368:
1.12 markus 1369: printf("The comment in your key file has been changed.\n");
1370: exit(0);
1.1 deraadt 1371: }
1372:
1.179 djm 1373: static const char *
1.182 djm 1374: fmt_validity(u_int64_t valid_from, u_int64_t valid_to)
1.179 djm 1375: {
1376: char from[32], to[32];
1377: static char ret[64];
1378: time_t tt;
1379: struct tm *tm;
1380:
1381: *from = *to = '\0';
1.182 djm 1382: if (valid_from == 0 && valid_to == 0xffffffffffffffffULL)
1.179 djm 1383: return "forever";
1384:
1.182 djm 1385: if (valid_from != 0) {
1.179 djm 1386: /* XXX revisit INT_MAX in 2038 :) */
1.182 djm 1387: tt = valid_from > INT_MAX ? INT_MAX : valid_from;
1.179 djm 1388: tm = localtime(&tt);
1389: strftime(from, sizeof(from), "%Y-%m-%dT%H:%M:%S", tm);
1390: }
1.182 djm 1391: if (valid_to != 0xffffffffffffffffULL) {
1.179 djm 1392: /* XXX revisit INT_MAX in 2038 :) */
1.182 djm 1393: tt = valid_to > INT_MAX ? INT_MAX : valid_to;
1.179 djm 1394: tm = localtime(&tt);
1395: strftime(to, sizeof(to), "%Y-%m-%dT%H:%M:%S", tm);
1396: }
1397:
1.182 djm 1398: if (valid_from == 0) {
1.179 djm 1399: snprintf(ret, sizeof(ret), "before %s", to);
1400: return ret;
1401: }
1.182 djm 1402: if (valid_to == 0xffffffffffffffffULL) {
1.179 djm 1403: snprintf(ret, sizeof(ret), "after %s", from);
1404: return ret;
1405: }
1406:
1407: snprintf(ret, sizeof(ret), "from %s to %s", from, to);
1408: return ret;
1409: }
1410:
1411: static void
1.186 djm 1412: add_flag_option(Buffer *c, const char *name)
1.179 djm 1413: {
1414: debug3("%s: %s", __func__, name);
1415: buffer_put_cstring(c, name);
1416: buffer_put_string(c, NULL, 0);
1417: }
1418:
1419: static void
1.186 djm 1420: add_string_option(Buffer *c, const char *name, const char *value)
1.179 djm 1421: {
1422: Buffer b;
1423:
1424: debug3("%s: %s=%s", __func__, name, value);
1425: buffer_init(&b);
1426: buffer_put_cstring(&b, value);
1427:
1428: buffer_put_cstring(c, name);
1429: buffer_put_string(c, buffer_ptr(&b), buffer_len(&b));
1430:
1431: buffer_free(&b);
1432: }
1433:
1.190 djm 1434: #define OPTIONS_CRITICAL 1
1435: #define OPTIONS_EXTENSIONS 2
1.179 djm 1436: static void
1.190 djm 1437: prepare_options_buf(Buffer *c, int which)
1.179 djm 1438: {
1439: buffer_clear(c);
1.196 djm 1440: if ((which & OPTIONS_CRITICAL) != 0 &&
1441: certflags_command != NULL)
1442: add_string_option(c, "force-command", certflags_command);
1.190 djm 1443: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.210 djm 1444: (certflags_flags & CERTOPT_X_FWD) != 0)
1445: add_flag_option(c, "permit-X11-forwarding");
1446: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.190 djm 1447: (certflags_flags & CERTOPT_AGENT_FWD) != 0)
1.186 djm 1448: add_flag_option(c, "permit-agent-forwarding");
1.190 djm 1449: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1450: (certflags_flags & CERTOPT_PORT_FWD) != 0)
1.186 djm 1451: add_flag_option(c, "permit-port-forwarding");
1.190 djm 1452: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1453: (certflags_flags & CERTOPT_PTY) != 0)
1.186 djm 1454: add_flag_option(c, "permit-pty");
1.190 djm 1455: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1456: (certflags_flags & CERTOPT_USER_RC) != 0)
1.186 djm 1457: add_flag_option(c, "permit-user-rc");
1.190 djm 1458: if ((which & OPTIONS_CRITICAL) != 0 &&
1459: certflags_src_addr != NULL)
1460: add_string_option(c, "source-address", certflags_src_addr);
1.179 djm 1461: }
1462:
1.197 djm 1463: static Key *
1464: load_pkcs11_key(char *path)
1465: {
1466: #ifdef ENABLE_PKCS11
1467: Key **keys = NULL, *public, *private = NULL;
1468: int i, nkeys;
1469:
1470: if ((public = key_load_public(path, NULL)) == NULL)
1471: fatal("Couldn't load CA public key \"%s\"", path);
1472:
1473: nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
1474: debug3("%s: %d keys", __func__, nkeys);
1475: if (nkeys <= 0)
1476: fatal("cannot read public key from pkcs11");
1477: for (i = 0; i < nkeys; i++) {
1478: if (key_equal_public(public, keys[i])) {
1479: private = keys[i];
1480: continue;
1481: }
1482: key_free(keys[i]);
1483: }
1484: xfree(keys);
1485: key_free(public);
1486: return private;
1487: #else
1488: fatal("no pkcs11 support");
1489: #endif /* ENABLE_PKCS11 */
1490: }
1491:
1.179 djm 1492: static void
1493: do_ca_sign(struct passwd *pw, int argc, char **argv)
1494: {
1495: int i, fd;
1496: u_int n;
1497: Key *ca, *public;
1498: char *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
1499: FILE *f;
1.186 djm 1500: int v00 = 0; /* legacy keys */
1.179 djm 1501:
1.186 djm 1502: if (key_type_name != NULL) {
1503: switch (key_type_from_name(key_type_name)) {
1504: case KEY_RSA_CERT_V00:
1505: case KEY_DSA_CERT_V00:
1506: v00 = 1;
1507: break;
1508: case KEY_UNSPEC:
1509: if (strcasecmp(key_type_name, "v00") == 0) {
1510: v00 = 1;
1511: break;
1512: } else if (strcasecmp(key_type_name, "v01") == 0)
1513: break;
1514: /* FALLTHROUGH */
1515: default:
1516: fprintf(stderr, "unknown key type %s\n", key_type_name);
1517: exit(1);
1518: }
1519: }
1520:
1.197 djm 1521: pkcs11_init(1);
1522: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1523: if (pkcs11provider != NULL) {
1524: if ((ca = load_pkcs11_key(tmp)) == NULL)
1525: fatal("No PKCS#11 key matching %s found", ca_key_path);
1526: } else if ((ca = load_identity(tmp)) == NULL)
1527: fatal("Couldn't load CA key \"%s\"", tmp);
1528: xfree(tmp);
1529:
1.179 djm 1530: for (i = 0; i < argc; i++) {
1531: /* Split list of principals */
1532: n = 0;
1533: if (cert_principals != NULL) {
1534: otmp = tmp = xstrdup(cert_principals);
1535: plist = NULL;
1536: for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
1537: plist = xrealloc(plist, n + 1, sizeof(*plist));
1538: if (*(plist[n] = xstrdup(cp)) == '\0')
1539: fatal("Empty principal name");
1540: }
1541: xfree(otmp);
1542: }
1543:
1544: tmp = tilde_expand_filename(argv[i], pw->pw_uid);
1545: if ((public = key_load_public(tmp, &comment)) == NULL)
1546: fatal("%s: unable to open \"%s\"", __func__, tmp);
1.200 djm 1547: if (public->type != KEY_RSA && public->type != KEY_DSA &&
1548: public->type != KEY_ECDSA)
1.179 djm 1549: fatal("%s: key \"%s\" type %s cannot be certified",
1550: __func__, tmp, key_type(public));
1551:
1552: /* Prepare certificate to sign */
1.186 djm 1553: if (key_to_certified(public, v00) != 0)
1.179 djm 1554: fatal("Could not upgrade key %s to certificate", tmp);
1555: public->cert->type = cert_key_type;
1.186 djm 1556: public->cert->serial = (u_int64_t)cert_serial;
1.179 djm 1557: public->cert->key_id = xstrdup(cert_key_id);
1558: public->cert->nprincipals = n;
1559: public->cert->principals = plist;
1560: public->cert->valid_after = cert_valid_from;
1561: public->cert->valid_before = cert_valid_to;
1.190 djm 1562: if (v00) {
1563: prepare_options_buf(&public->cert->critical,
1564: OPTIONS_CRITICAL|OPTIONS_EXTENSIONS);
1565: } else {
1566: prepare_options_buf(&public->cert->critical,
1567: OPTIONS_CRITICAL);
1568: prepare_options_buf(&public->cert->extensions,
1569: OPTIONS_EXTENSIONS);
1570: }
1.179 djm 1571: public->cert->signature_key = key_from_private(ca);
1572:
1573: if (key_certify(public, ca) != 0)
1574: fatal("Couldn't not certify key %s", tmp);
1575:
1576: if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1577: *cp = '\0';
1578: xasprintf(&out, "%s-cert.pub", tmp);
1579: xfree(tmp);
1580:
1581: if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1582: fatal("Could not open \"%s\" for writing: %s", out,
1583: strerror(errno));
1584: if ((f = fdopen(fd, "w")) == NULL)
1585: fatal("%s: fdopen: %s", __func__, strerror(errno));
1586: if (!key_write(public, f))
1587: fatal("Could not write certified key to %s", out);
1588: fprintf(f, " %s\n", comment);
1589: fclose(f);
1590:
1.186 djm 1591: if (!quiet) {
1592: logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
1593: "valid %s", key_cert_type(public),
1.205 djm 1594: out, public->cert->key_id,
1595: (unsigned long long)public->cert->serial,
1.179 djm 1596: cert_principals != NULL ? " for " : "",
1597: cert_principals != NULL ? cert_principals : "",
1.182 djm 1598: fmt_validity(cert_valid_from, cert_valid_to));
1.186 djm 1599: }
1.179 djm 1600:
1601: key_free(public);
1602: xfree(out);
1603: }
1.197 djm 1604: pkcs11_terminate();
1.179 djm 1605: exit(0);
1606: }
1607:
1608: static u_int64_t
1609: parse_relative_time(const char *s, time_t now)
1610: {
1611: int64_t mul, secs;
1612:
1613: mul = *s == '-' ? -1 : 1;
1614:
1615: if ((secs = convtime(s + 1)) == -1)
1616: fatal("Invalid relative certificate time %s", s);
1617: if (mul == -1 && secs > now)
1618: fatal("Certificate time %s cannot be represented", s);
1619: return now + (u_int64_t)(secs * mul);
1620: }
1621:
1622: static u_int64_t
1623: parse_absolute_time(const char *s)
1624: {
1625: struct tm tm;
1626: time_t tt;
1.180 djm 1627: char buf[32], *fmt;
1.179 djm 1628:
1.180 djm 1629: /*
1630: * POSIX strptime says "The application shall ensure that there
1631: * is white-space or other non-alphanumeric characters between
1632: * any two conversion specifications" so arrange things this way.
1633: */
1634: switch (strlen(s)) {
1635: case 8:
1.184 djm 1636: fmt = "%Y-%m-%d";
1637: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2s", s, s + 4, s + 6);
1.180 djm 1638: break;
1639: case 14:
1.184 djm 1640: fmt = "%Y-%m-%dT%H:%M:%S";
1641: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s:%.2s",
1.180 djm 1642: s, s + 4, s + 6, s + 8, s + 10, s + 12);
1643: break;
1644: default:
1.179 djm 1645: fatal("Invalid certificate time format %s", s);
1.180 djm 1646: }
1.179 djm 1647:
1648: bzero(&tm, sizeof(tm));
1.180 djm 1649: if (strptime(buf, fmt, &tm) == NULL)
1.179 djm 1650: fatal("Invalid certificate time %s", s);
1651: if ((tt = mktime(&tm)) < 0)
1652: fatal("Certificate time %s cannot be represented", s);
1653: return (u_int64_t)tt;
1654: }
1655:
1656: static void
1657: parse_cert_times(char *timespec)
1658: {
1659: char *from, *to;
1660: time_t now = time(NULL);
1661: int64_t secs;
1662:
1663: /* +timespec relative to now */
1664: if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1665: if ((secs = convtime(timespec + 1)) == -1)
1666: fatal("Invalid relative certificate life %s", timespec);
1667: cert_valid_to = now + secs;
1668: /*
1669: * Backdate certificate one minute to avoid problems on hosts
1670: * with poorly-synchronised clocks.
1671: */
1672: cert_valid_from = ((now - 59)/ 60) * 60;
1673: return;
1674: }
1675:
1676: /*
1677: * from:to, where
1678: * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1679: * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1680: */
1681: from = xstrdup(timespec);
1682: to = strchr(from, ':');
1683: if (to == NULL || from == to || *(to + 1) == '\0')
1.181 djm 1684: fatal("Invalid certificate life specification %s", timespec);
1.179 djm 1685: *to++ = '\0';
1686:
1687: if (*from == '-' || *from == '+')
1688: cert_valid_from = parse_relative_time(from, now);
1689: else
1690: cert_valid_from = parse_absolute_time(from);
1691:
1692: if (*to == '-' || *to == '+')
1693: cert_valid_to = parse_relative_time(to, cert_valid_from);
1694: else
1695: cert_valid_to = parse_absolute_time(to);
1696:
1697: if (cert_valid_to <= cert_valid_from)
1698: fatal("Empty certificate validity interval");
1699: xfree(from);
1700: }
1701:
1702: static void
1.186 djm 1703: add_cert_option(char *opt)
1.179 djm 1704: {
1705: char *val;
1706:
1.208 stevesk 1707: if (strcasecmp(opt, "clear") == 0)
1.190 djm 1708: certflags_flags = 0;
1.179 djm 1709: else if (strcasecmp(opt, "no-x11-forwarding") == 0)
1.190 djm 1710: certflags_flags &= ~CERTOPT_X_FWD;
1.179 djm 1711: else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
1.190 djm 1712: certflags_flags |= CERTOPT_X_FWD;
1.179 djm 1713: else if (strcasecmp(opt, "no-agent-forwarding") == 0)
1.190 djm 1714: certflags_flags &= ~CERTOPT_AGENT_FWD;
1.179 djm 1715: else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
1.190 djm 1716: certflags_flags |= CERTOPT_AGENT_FWD;
1.179 djm 1717: else if (strcasecmp(opt, "no-port-forwarding") == 0)
1.190 djm 1718: certflags_flags &= ~CERTOPT_PORT_FWD;
1.179 djm 1719: else if (strcasecmp(opt, "permit-port-forwarding") == 0)
1.190 djm 1720: certflags_flags |= CERTOPT_PORT_FWD;
1.179 djm 1721: else if (strcasecmp(opt, "no-pty") == 0)
1.190 djm 1722: certflags_flags &= ~CERTOPT_PTY;
1.179 djm 1723: else if (strcasecmp(opt, "permit-pty") == 0)
1.190 djm 1724: certflags_flags |= CERTOPT_PTY;
1.179 djm 1725: else if (strcasecmp(opt, "no-user-rc") == 0)
1.190 djm 1726: certflags_flags &= ~CERTOPT_USER_RC;
1.179 djm 1727: else if (strcasecmp(opt, "permit-user-rc") == 0)
1.190 djm 1728: certflags_flags |= CERTOPT_USER_RC;
1.179 djm 1729: else if (strncasecmp(opt, "force-command=", 14) == 0) {
1730: val = opt + 14;
1731: if (*val == '\0')
1.186 djm 1732: fatal("Empty force-command option");
1.190 djm 1733: if (certflags_command != NULL)
1.179 djm 1734: fatal("force-command already specified");
1.190 djm 1735: certflags_command = xstrdup(val);
1.179 djm 1736: } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1737: val = opt + 15;
1738: if (*val == '\0')
1.186 djm 1739: fatal("Empty source-address option");
1.190 djm 1740: if (certflags_src_addr != NULL)
1.179 djm 1741: fatal("source-address already specified");
1742: if (addr_match_cidr_list(NULL, val) != 0)
1743: fatal("Invalid source-address list");
1.190 djm 1744: certflags_src_addr = xstrdup(val);
1.179 djm 1745: } else
1.186 djm 1746: fatal("Unsupported certificate option \"%s\"", opt);
1.179 djm 1747: }
1748:
1.63 itojun 1749: static void
1.192 djm 1750: show_options(const Buffer *optbuf, int v00, int in_critical)
1751: {
1752: u_char *name, *data;
1753: u_int dlen;
1754: Buffer options, option;
1755:
1756: buffer_init(&options);
1757: buffer_append(&options, buffer_ptr(optbuf), buffer_len(optbuf));
1758:
1759: buffer_init(&option);
1760: while (buffer_len(&options) != 0) {
1761: name = buffer_get_string(&options, NULL);
1762: data = buffer_get_string_ptr(&options, &dlen);
1763: buffer_append(&option, data, dlen);
1764: printf(" %s", name);
1765: if ((v00 || !in_critical) &&
1766: (strcmp(name, "permit-X11-forwarding") == 0 ||
1767: strcmp(name, "permit-agent-forwarding") == 0 ||
1768: strcmp(name, "permit-port-forwarding") == 0 ||
1769: strcmp(name, "permit-pty") == 0 ||
1770: strcmp(name, "permit-user-rc") == 0))
1771: printf("\n");
1772: else if ((v00 || in_critical) &&
1773: (strcmp(name, "force-command") == 0 ||
1774: strcmp(name, "source-address") == 0)) {
1775: data = buffer_get_string(&option, NULL);
1776: printf(" %s\n", data);
1777: xfree(data);
1778: } else {
1779: printf(" UNKNOWN OPTION (len %u)\n",
1780: buffer_len(&option));
1781: buffer_clear(&option);
1782: }
1783: xfree(name);
1784: if (buffer_len(&option) != 0)
1785: fatal("Option corrupt: extra data at end");
1786: }
1787: buffer_free(&option);
1788: buffer_free(&options);
1789: }
1790:
1791: static void
1.182 djm 1792: do_show_cert(struct passwd *pw)
1793: {
1794: Key *key;
1795: struct stat st;
1796: char *key_fp, *ca_fp;
1.192 djm 1797: u_int i, v00;
1.182 djm 1798:
1799: if (!have_identity)
1800: ask_filename(pw, "Enter file in which the key is");
1.191 djm 1801: if (stat(identity_file, &st) < 0)
1802: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.182 djm 1803: if ((key = key_load_public(identity_file, NULL)) == NULL)
1804: fatal("%s is not a public key", identity_file);
1805: if (!key_is_cert(key))
1806: fatal("%s is not a certificate", identity_file);
1.186 djm 1807: v00 = key->type == KEY_RSA_CERT_V00 || key->type == KEY_DSA_CERT_V00;
1808:
1.182 djm 1809: key_fp = key_fingerprint(key, SSH_FP_MD5, SSH_FP_HEX);
1810: ca_fp = key_fingerprint(key->cert->signature_key,
1811: SSH_FP_MD5, SSH_FP_HEX);
1812:
1813: printf("%s:\n", identity_file);
1.186 djm 1814: printf(" Type: %s %s certificate\n", key_ssh_name(key),
1815: key_cert_type(key));
1816: printf(" Public key: %s %s\n", key_type(key), key_fp);
1817: printf(" Signing CA: %s %s\n",
1.182 djm 1818: key_type(key->cert->signature_key), ca_fp);
1.186 djm 1819: printf(" Key ID: \"%s\"\n", key->cert->key_id);
1.205 djm 1820: if (!v00) {
1821: printf(" Serial: %llu\n",
1822: (unsigned long long)key->cert->serial);
1823: }
1.182 djm 1824: printf(" Valid: %s\n",
1825: fmt_validity(key->cert->valid_after, key->cert->valid_before));
1826: printf(" Principals: ");
1827: if (key->cert->nprincipals == 0)
1828: printf("(none)\n");
1829: else {
1830: for (i = 0; i < key->cert->nprincipals; i++)
1831: printf("\n %s",
1832: key->cert->principals[i]);
1833: printf("\n");
1834: }
1.186 djm 1835: printf(" Critical Options: ");
1836: if (buffer_len(&key->cert->critical) == 0)
1.182 djm 1837: printf("(none)\n");
1838: else {
1839: printf("\n");
1.192 djm 1840: show_options(&key->cert->critical, v00, 1);
1.186 djm 1841: }
1842: if (!v00) {
1843: printf(" Extensions: ");
1844: if (buffer_len(&key->cert->extensions) == 0)
1845: printf("(none)\n");
1846: else {
1847: printf("\n");
1.192 djm 1848: show_options(&key->cert->extensions, v00, 0);
1.182 djm 1849: }
1850: }
1851: exit(0);
1852: }
1853:
1854: static void
1.10 markus 1855: usage(void)
1856: {
1.161 sobrado 1857: fprintf(stderr, "usage: %s [options]\n", __progname);
1.77 jakob 1858: fprintf(stderr, "Options:\n");
1.206 stevesk 1859: fprintf(stderr, " -A Generate non-existent host keys for all key types.\n");
1.123 otto 1860: fprintf(stderr, " -a trials Number of trials for screening DH-GEX moduli.\n");
1861: fprintf(stderr, " -B Show bubblebabble digest of key file.\n");
1.77 jakob 1862: fprintf(stderr, " -b bits Number of bits in the key to create.\n");
1.123 otto 1863: fprintf(stderr, " -C comment Provide new comment.\n");
1.77 jakob 1864: fprintf(stderr, " -c Change comment in private and public key files.\n");
1.177 markus 1865: #ifdef ENABLE_PKCS11
1866: fprintf(stderr, " -D pkcs11 Download public key from pkcs11 token.\n");
1867: #endif
1.193 djm 1868: fprintf(stderr, " -e Export OpenSSH to foreign format key file.\n");
1.123 otto 1869: fprintf(stderr, " -F hostname Find hostname in known hosts file.\n");
1.77 jakob 1870: fprintf(stderr, " -f filename Filename of the key file.\n");
1.123 otto 1871: fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n");
1.105 jakob 1872: fprintf(stderr, " -g Use generic DNS resource record format.\n");
1.123 otto 1873: fprintf(stderr, " -H Hash names in known_hosts file.\n");
1.179 djm 1874: fprintf(stderr, " -h Generate host certificate instead of a user certificate.\n");
1875: fprintf(stderr, " -I key_id Key identifier to include in certificate.\n");
1.193 djm 1876: fprintf(stderr, " -i Import foreign format to OpenSSH key file.\n");
1.215 ! dtucker 1877: fprintf(stderr, " -J number Screen this number of moduli lines\n");
! 1878: fprintf(stderr, " -j number Start screening moduli at specified line.\n");
1.212 jmc 1879: fprintf(stderr, " -K checkpt Write checkpoints to this file.\n");
1.182 djm 1880: fprintf(stderr, " -L Print the contents of a certificate.\n");
1.77 jakob 1881: fprintf(stderr, " -l Show fingerprint of key file.\n");
1.194 jmc 1882: fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n");
1.193 djm 1883: fprintf(stderr, " -m key_fmt Conversion format for -e/-i (PEM|PKCS8|RFC4716).\n");
1.194 jmc 1884: fprintf(stderr, " -N phrase Provide new passphrase.\n");
1.179 djm 1885: fprintf(stderr, " -n name,... User/host principal names to include in certificate\n");
1.187 jmc 1886: fprintf(stderr, " -O option Specify a certificate option.\n");
1.123 otto 1887: fprintf(stderr, " -P phrase Provide old passphrase.\n");
1.77 jakob 1888: fprintf(stderr, " -p Change passphrase of private key file.\n");
1889: fprintf(stderr, " -q Quiet.\n");
1.123 otto 1890: fprintf(stderr, " -R hostname Remove host from known_hosts file.\n");
1891: fprintf(stderr, " -r hostname Print DNS resource record.\n");
1.194 jmc 1892: fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n");
1.179 djm 1893: fprintf(stderr, " -s ca_key Certify keys with CA key.\n");
1.123 otto 1894: fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n");
1.77 jakob 1895: fprintf(stderr, " -t type Specify type of key to create.\n");
1.179 djm 1896: fprintf(stderr, " -V from:to Specify certificate validity interval.\n");
1.123 otto 1897: fprintf(stderr, " -v Verbose.\n");
1898: fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n");
1899: fprintf(stderr, " -y Read private key file and print public key.\n");
1.187 jmc 1900: fprintf(stderr, " -z serial Specify a serial number.\n");
1.107 djm 1901:
1.12 markus 1902: exit(1);
1.10 markus 1903: }
1904:
1.13 deraadt 1905: /*
1906: * Main program for key management.
1907: */
1.2 provos 1908: int
1.156 deraadt 1909: main(int argc, char **argv)
1.1 deraadt 1910: {
1.87 djm 1911: char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
1.211 dtucker 1912: char *checkpoint = NULL;
1.197 djm 1913: char out_file[MAXPATHLEN], *rr_hostname = NULL;
1.46 deraadt 1914: Key *private, *public;
1.12 markus 1915: struct passwd *pw;
1916: struct stat st;
1.177 markus 1917: int opt, type, fd;
1.126 dtucker 1918: u_int32_t memory = 0, generator_wanted = 0, trials = 100;
1.107 djm 1919: int do_gen_candidates = 0, do_screen_candidates = 0;
1.206 stevesk 1920: int gen_all_hostkeys = 0;
1.215 ! dtucker 1921: unsigned long start_lineno = 0, lines_to_process = 0;
1.107 djm 1922: BIGNUM *start = NULL;
1.12 markus 1923: FILE *f;
1.125 avsm 1924: const char *errstr;
1.33 markus 1925:
1.12 markus 1926: extern int optind;
1927: extern char *optarg;
1.129 djm 1928:
1929: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
1930: sanitise_stdfd();
1.12 markus 1931:
1.201 djm 1932: OpenSSL_add_all_algorithms();
1.156 deraadt 1933: log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1.19 markus 1934:
1.14 markus 1935: /* we need this for the home * directory. */
1.12 markus 1936: pw = getpwuid(getuid());
1937: if (!pw) {
1938: printf("You don't exist, go away!\n");
1939: exit(1);
1940: }
1.19 markus 1941: if (gethostname(hostname, sizeof(hostname)) < 0) {
1942: perror("gethostname");
1943: exit(1);
1944: }
1.14 markus 1945:
1.215 ! dtucker 1946: while ((opt = getopt(argc, argv, "AegiqpclBHLhvxXyF:b:f:t:D:I:J:j:K:P:"
! 1947: "m:N:n:O:C:r:g:R:T:G:M:S:s:a:V:W:z")) != -1) {
1.12 markus 1948: switch (opt) {
1.206 stevesk 1949: case 'A':
1950: gen_all_hostkeys = 1;
1951: break;
1.12 markus 1952: case 'b':
1.202 markus 1953: bits = (u_int32_t)strtonum(optarg, 256, 32768, &errstr);
1.125 avsm 1954: if (errstr)
1955: fatal("Bits has bad value %s (%s)",
1956: optarg, errstr);
1.12 markus 1957: break;
1.119 djm 1958: case 'F':
1959: find_host = 1;
1960: rr_hostname = optarg;
1961: break;
1962: case 'H':
1963: hash_hosts = 1;
1964: break;
1.179 djm 1965: case 'I':
1966: cert_key_id = optarg;
1967: break;
1.215 ! dtucker 1968: case 'J':
! 1969: lines_to_process = strtoul(optarg, NULL, 10);
! 1970: break;
! 1971: case 'j':
! 1972: start_lineno = strtoul(optarg, NULL, 10);
! 1973: break;
1.119 djm 1974: case 'R':
1975: delete_host = 1;
1976: rr_hostname = optarg;
1977: break;
1.182 djm 1978: case 'L':
1979: show_cert = 1;
1980: break;
1.12 markus 1981: case 'l':
1982: print_fingerprint = 1;
1983: break;
1.49 markus 1984: case 'B':
1985: print_bubblebabble = 1;
1986: break;
1.193 djm 1987: case 'm':
1988: if (strcasecmp(optarg, "RFC4716") == 0 ||
1989: strcasecmp(optarg, "ssh2") == 0) {
1990: convert_format = FMT_RFC4716;
1991: break;
1992: }
1993: if (strcasecmp(optarg, "PKCS8") == 0) {
1994: convert_format = FMT_PKCS8;
1995: break;
1996: }
1997: if (strcasecmp(optarg, "PEM") == 0) {
1998: convert_format = FMT_PEM;
1999: break;
2000: }
2001: fatal("Unsupported conversion format \"%s\"", optarg);
1.179 djm 2002: case 'n':
2003: cert_principals = optarg;
2004: break;
1.12 markus 2005: case 'p':
2006: change_passphrase = 1;
2007: break;
2008: case 'c':
2009: change_comment = 1;
2010: break;
2011: case 'f':
1.124 avsm 2012: if (strlcpy(identity_file, optarg, sizeof(identity_file)) >=
2013: sizeof(identity_file))
2014: fatal("Identity filename too long");
1.12 markus 2015: have_identity = 1;
2016: break;
1.105 jakob 2017: case 'g':
2018: print_generic = 1;
2019: break;
1.12 markus 2020: case 'P':
2021: identity_passphrase = optarg;
2022: break;
2023: case 'N':
2024: identity_new_passphrase = optarg;
2025: break;
1.179 djm 2026: case 'O':
1.186 djm 2027: add_cert_option(optarg);
1.179 djm 2028: break;
1.12 markus 2029: case 'C':
2030: identity_comment = optarg;
2031: break;
2032: case 'q':
2033: quiet = 1;
1.20 deraadt 2034: break;
1.57 markus 2035: case 'e':
1.19 markus 2036: case 'x':
1.57 markus 2037: /* export key */
1.193 djm 2038: convert_to = 1;
1.19 markus 2039: break;
1.179 djm 2040: case 'h':
2041: cert_key_type = SSH2_CERT_TYPE_HOST;
1.190 djm 2042: certflags_flags = 0;
1.179 djm 2043: break;
1.57 markus 2044: case 'i':
1.19 markus 2045: case 'X':
1.57 markus 2046: /* import key */
1.193 djm 2047: convert_from = 1;
1.19 markus 2048: break;
2049: case 'y':
2050: print_public = 1;
2051: break;
1.179 djm 2052: case 's':
2053: ca_key_path = optarg;
2054: break;
1.33 markus 2055: case 't':
2056: key_type_name = optarg;
2057: break;
1.75 markus 2058: case 'D':
1.177 markus 2059: pkcs11provider = optarg;
1.66 markus 2060: break;
1.113 djm 2061: case 'v':
2062: if (log_level == SYSLOG_LEVEL_INFO)
2063: log_level = SYSLOG_LEVEL_DEBUG1;
2064: else {
1.117 deraadt 2065: if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
1.113 djm 2066: log_level < SYSLOG_LEVEL_DEBUG3)
2067: log_level++;
2068: }
2069: break;
1.105 jakob 2070: case 'r':
1.119 djm 2071: rr_hostname = optarg;
1.105 jakob 2072: break;
1.107 djm 2073: case 'W':
1.142 deraadt 2074: generator_wanted = (u_int32_t)strtonum(optarg, 1,
2075: UINT_MAX, &errstr);
1.124 avsm 2076: if (errstr)
2077: fatal("Desired generator has bad value: %s (%s)",
2078: optarg, errstr);
1.107 djm 2079: break;
2080: case 'a':
1.142 deraadt 2081: trials = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1.124 avsm 2082: if (errstr)
2083: fatal("Invalid number of trials: %s (%s)",
2084: optarg, errstr);
1.107 djm 2085: break;
2086: case 'M':
1.142 deraadt 2087: memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1.186 djm 2088: if (errstr)
1.124 avsm 2089: fatal("Memory limit is %s: %s", errstr, optarg);
1.107 djm 2090: break;
2091: case 'G':
2092: do_gen_candidates = 1;
1.124 avsm 2093: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2094: sizeof(out_file))
2095: fatal("Output filename too long");
1.107 djm 2096: break;
2097: case 'T':
2098: do_screen_candidates = 1;
1.124 avsm 2099: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2100: sizeof(out_file))
2101: fatal("Output filename too long");
1.107 djm 2102: break;
1.211 dtucker 2103: case 'K':
2104: if (strlen(optarg) >= MAXPATHLEN)
2105: fatal("Checkpoint filename too long");
2106: checkpoint = xstrdup(optarg);
2107: break;
1.107 djm 2108: case 'S':
2109: /* XXX - also compare length against bits */
2110: if (BN_hex2bn(&start, optarg) == 0)
2111: fatal("Invalid start point.");
2112: break;
1.179 djm 2113: case 'V':
2114: parse_cert_times(optarg);
1.186 djm 2115: break;
2116: case 'z':
2117: cert_serial = strtonum(optarg, 0, LLONG_MAX, &errstr);
2118: if (errstr)
2119: fatal("Invalid serial number: %s", errstr);
1.179 djm 2120: break;
1.12 markus 2121: case '?':
2122: default:
2123: usage();
2124: }
2125: }
1.113 djm 2126:
2127: /* reinit */
1.156 deraadt 2128: log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
1.113 djm 2129:
1.179 djm 2130: argv += optind;
2131: argc -= optind;
2132:
2133: if (ca_key_path != NULL) {
2134: if (argc < 1) {
2135: printf("Too few arguments.\n");
2136: usage();
2137: }
2138: } else if (argc > 0) {
1.12 markus 2139: printf("Too many arguments.\n");
1.87 djm 2140: usage();
2141: }
1.12 markus 2142: if (change_passphrase && change_comment) {
2143: printf("Can only have one of -p and -c.\n");
1.166 djm 2144: usage();
2145: }
2146: if (print_fingerprint && (delete_host || hash_hosts)) {
2147: printf("Cannot use -l with -D or -R.\n");
1.12 markus 2148: usage();
1.179 djm 2149: }
2150: if (ca_key_path != NULL) {
2151: if (cert_key_id == NULL)
2152: fatal("Must specify key id (-I) when certifying");
2153: do_ca_sign(pw, argc, argv);
1.12 markus 2154: }
1.182 djm 2155: if (show_cert)
2156: do_show_cert(pw);
1.119 djm 2157: if (delete_host || hash_hosts || find_host)
2158: do_known_hosts(pw, rr_hostname);
1.49 markus 2159: if (print_fingerprint || print_bubblebabble)
1.12 markus 2160: do_fingerprint(pw);
2161: if (change_passphrase)
2162: do_change_passphrase(pw);
2163: if (change_comment)
2164: do_change_comment(pw);
1.193 djm 2165: if (convert_to)
2166: do_convert_to(pw);
2167: if (convert_from)
2168: do_convert_from(pw);
1.19 markus 2169: if (print_public)
2170: do_print_public(pw);
1.119 djm 2171: if (rr_hostname != NULL) {
1.138 jakob 2172: unsigned int n = 0;
2173:
2174: if (have_identity) {
2175: n = do_print_resource_record(pw,
2176: identity_file, rr_hostname);
2177: if (n == 0) {
2178: perror(identity_file);
2179: exit(1);
2180: }
2181: exit(0);
2182: } else {
2183:
2184: n += do_print_resource_record(pw,
2185: _PATH_HOST_RSA_KEY_FILE, rr_hostname);
2186: n += do_print_resource_record(pw,
2187: _PATH_HOST_DSA_KEY_FILE, rr_hostname);
1.214 djm 2188: n += do_print_resource_record(pw,
2189: _PATH_HOST_ECDSA_KEY_FILE, rr_hostname);
1.138 jakob 2190:
2191: if (n == 0)
2192: fatal("no keys found.");
2193: exit(0);
2194: }
1.105 jakob 2195: }
1.177 markus 2196: if (pkcs11provider != NULL)
1.197 djm 2197: do_download(pw);
1.107 djm 2198:
2199: if (do_gen_candidates) {
2200: FILE *out = fopen(out_file, "w");
1.111 djm 2201:
1.107 djm 2202: if (out == NULL) {
2203: error("Couldn't open modulus candidate file \"%s\": %s",
2204: out_file, strerror(errno));
2205: return (1);
2206: }
1.130 markus 2207: if (bits == 0)
2208: bits = DEFAULT_BITS;
1.107 djm 2209: if (gen_candidates(out, memory, bits, start) != 0)
1.131 stevesk 2210: fatal("modulus candidate generation failed");
1.107 djm 2211:
2212: return (0);
2213: }
2214:
2215: if (do_screen_candidates) {
2216: FILE *in;
2217: FILE *out = fopen(out_file, "w");
2218:
2219: if (have_identity && strcmp(identity_file, "-") != 0) {
2220: if ((in = fopen(identity_file, "r")) == NULL) {
2221: fatal("Couldn't open modulus candidate "
1.111 djm 2222: "file \"%s\": %s", identity_file,
1.107 djm 2223: strerror(errno));
2224: }
2225: } else
2226: in = stdin;
2227:
2228: if (out == NULL) {
2229: fatal("Couldn't open moduli file \"%s\": %s",
2230: out_file, strerror(errno));
2231: }
1.215 ! dtucker 2232: if (prime_test(in, out, trials, generator_wanted, checkpoint,
! 2233: start_lineno, lines_to_process) != 0)
1.131 stevesk 2234: fatal("modulus screening failed");
1.108 markus 2235: return (0);
1.75 markus 2236: }
1.12 markus 2237:
1.206 stevesk 2238: if (gen_all_hostkeys) {
2239: do_gen_all_hostkeys(pw);
2240: return (0);
2241: }
2242:
1.12 markus 2243: arc4random_stir();
2244:
1.133 djm 2245: if (key_type_name == NULL)
2246: key_type_name = "rsa";
2247:
1.35 markus 2248: type = key_type_from_name(key_type_name);
1.206 stevesk 2249: type_bits_valid(type, &bits);
2250:
1.33 markus 2251: if (!quiet)
1.35 markus 2252: printf("Generating public/private %s key pair.\n", key_type_name);
1.33 markus 2253: private = key_generate(type, bits);
2254: if (private == NULL) {
1.173 tobias 2255: fprintf(stderr, "key_generate failed\n");
1.33 markus 2256: exit(1);
2257: }
2258: public = key_from_private(private);
1.12 markus 2259:
2260: if (!have_identity)
2261: ask_filename(pw, "Enter file in which to save the key");
2262:
1.132 djm 2263: /* Create ~/.ssh directory if it doesn't already exist. */
1.188 djm 2264: snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
2265: pw->pw_dir, _PATH_SSH_USER_DIR);
2266: if (strstr(identity_file, dotsshdir) != NULL) {
2267: if (stat(dotsshdir, &st) < 0) {
2268: if (errno != ENOENT) {
2269: error("Could not stat %s: %s", dotsshdir,
2270: strerror(errno));
2271: } else if (mkdir(dotsshdir, 0700) < 0) {
2272: error("Could not create directory '%s': %s",
2273: dotsshdir, strerror(errno));
2274: } else if (!quiet)
2275: printf("Created directory '%s'.\n", dotsshdir);
2276: }
1.12 markus 2277: }
2278: /* If the file already exists, ask the user to confirm. */
2279: if (stat(identity_file, &st) >= 0) {
2280: char yesno[3];
2281: printf("%s already exists.\n", identity_file);
2282: printf("Overwrite (y/n)? ");
2283: fflush(stdout);
2284: if (fgets(yesno, sizeof(yesno), stdin) == NULL)
2285: exit(1);
2286: if (yesno[0] != 'y' && yesno[0] != 'Y')
2287: exit(1);
2288: }
2289: /* Ask for a passphrase (twice). */
2290: if (identity_passphrase)
2291: passphrase1 = xstrdup(identity_passphrase);
2292: else if (identity_new_passphrase)
2293: passphrase1 = xstrdup(identity_new_passphrase);
2294: else {
2295: passphrase_again:
2296: passphrase1 =
1.65 markus 2297: read_passphrase("Enter passphrase (empty for no "
2298: "passphrase): ", RP_ALLOW_STDIN);
2299: passphrase2 = read_passphrase("Enter same passphrase again: ",
2300: RP_ALLOW_STDIN);
1.12 markus 2301: if (strcmp(passphrase1, passphrase2) != 0) {
1.65 markus 2302: /*
2303: * The passphrases do not match. Clear them and
2304: * retry.
2305: */
1.12 markus 2306: memset(passphrase1, 0, strlen(passphrase1));
2307: memset(passphrase2, 0, strlen(passphrase2));
2308: xfree(passphrase1);
2309: xfree(passphrase2);
2310: printf("Passphrases do not match. Try again.\n");
2311: goto passphrase_again;
2312: }
2313: /* Clear the other copy of the passphrase. */
2314: memset(passphrase2, 0, strlen(passphrase2));
2315: xfree(passphrase2);
2316: }
2317:
2318: if (identity_comment) {
2319: strlcpy(comment, identity_comment, sizeof(comment));
2320: } else {
1.172 stevesk 2321: /* Create default comment field for the passphrase. */
1.12 markus 2322: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
2323: }
2324:
2325: /* Save the key with the given passphrase and comment. */
1.52 markus 2326: if (!key_save_private(private, identity_file, passphrase1, comment)) {
1.56 markus 2327: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 2328: memset(passphrase1, 0, strlen(passphrase1));
2329: xfree(passphrase1);
2330: exit(1);
2331: }
2332: /* Clear the passphrase. */
2333: memset(passphrase1, 0, strlen(passphrase1));
2334: xfree(passphrase1);
2335:
2336: /* Clear the private key and the random number generator. */
1.33 markus 2337: key_free(private);
1.12 markus 2338: arc4random_stir();
2339:
2340: if (!quiet)
2341: printf("Your identification has been saved in %s.\n", identity_file);
2342:
2343: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 2344: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
2345: if (fd == -1) {
1.12 markus 2346: printf("Could not save your public key in %s\n", identity_file);
1.46 deraadt 2347: exit(1);
2348: }
2349: f = fdopen(fd, "w");
2350: if (f == NULL) {
1.173 tobias 2351: printf("fdopen %s failed\n", identity_file);
1.12 markus 2352: exit(1);
2353: }
1.19 markus 2354: if (!key_write(public, f))
1.173 tobias 2355: fprintf(stderr, "write key failed\n");
1.19 markus 2356: fprintf(f, " %s\n", comment);
1.12 markus 2357: fclose(f);
2358:
2359: if (!quiet) {
1.50 markus 2360: char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX);
1.167 grunk 2361: char *ra = key_fingerprint(public, SSH_FP_MD5,
2362: SSH_FP_RANDOMART);
1.19 markus 2363: printf("Your public key has been saved in %s.\n",
2364: identity_file);
1.12 markus 2365: printf("The key fingerprint is:\n");
1.50 markus 2366: printf("%s %s\n", fp, comment);
1.167 grunk 2367: printf("The key's randomart image is:\n");
2368: printf("%s\n", ra);
2369: xfree(ra);
1.50 markus 2370: xfree(fp);
1.12 markus 2371: }
1.19 markus 2372:
2373: key_free(public);
1.12 markus 2374: exit(0);
1.1 deraadt 2375: }
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