Annotation of src/usr.bin/ssh/ssh-keygen.c, Revision 1.213
1.213 ! djm 1: /* $OpenBSD: ssh-keygen.c,v 1.212 2011/10/16 15:02:41 jmc 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 *);
1.211 dtucker 152: int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *);
1.115 djm 153:
1.63 itojun 154: static void
1.209 djm 155: type_bits_valid(int type, u_int32_t *bitsp)
1.206 stevesk 156: {
157: u_int maxbits;
158:
159: if (type == KEY_UNSPEC) {
160: fprintf(stderr, "unknown key type %s\n", key_type_name);
161: exit(1);
162: }
1.209 djm 163: if (*bitsp == 0) {
1.206 stevesk 164: if (type == KEY_DSA)
1.209 djm 165: *bitsp = DEFAULT_BITS_DSA;
1.206 stevesk 166: else if (type == KEY_ECDSA)
1.209 djm 167: *bitsp = DEFAULT_BITS_ECDSA;
1.206 stevesk 168: else
1.209 djm 169: *bitsp = DEFAULT_BITS;
1.206 stevesk 170: }
171: maxbits = (type == KEY_DSA) ?
172: OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
1.209 djm 173: if (*bitsp > maxbits) {
1.206 stevesk 174: fprintf(stderr, "key bits exceeds maximum %d\n", maxbits);
175: exit(1);
176: }
1.209 djm 177: if (type == KEY_DSA && *bitsp != 1024)
1.206 stevesk 178: fatal("DSA keys must be 1024 bits");
1.209 djm 179: else if (type != KEY_ECDSA && *bitsp < 768)
1.206 stevesk 180: fatal("Key must at least be 768 bits");
1.209 djm 181: else if (type == KEY_ECDSA && key_ecdsa_bits_to_nid(*bitsp) == -1)
1.206 stevesk 182: fatal("Invalid ECDSA key length - valid lengths are "
183: "256, 384 or 521 bits");
184: }
185:
186: static void
1.10 markus 187: ask_filename(struct passwd *pw, const char *prompt)
1.1 deraadt 188: {
1.12 markus 189: char buf[1024];
1.35 markus 190: char *name = NULL;
191:
1.92 stevesk 192: if (key_type_name == NULL)
1.40 markus 193: name = _PATH_SSH_CLIENT_ID_RSA;
1.140 deraadt 194: else {
1.92 stevesk 195: switch (key_type_from_name(key_type_name)) {
196: case KEY_RSA1:
197: name = _PATH_SSH_CLIENT_IDENTITY;
198: break;
1.186 djm 199: case KEY_DSA_CERT:
200: case KEY_DSA_CERT_V00:
1.92 stevesk 201: case KEY_DSA:
202: name = _PATH_SSH_CLIENT_ID_DSA;
203: break;
1.200 djm 204: case KEY_ECDSA_CERT:
205: case KEY_ECDSA:
206: name = _PATH_SSH_CLIENT_ID_ECDSA;
207: break;
1.186 djm 208: case KEY_RSA_CERT:
209: case KEY_RSA_CERT_V00:
1.92 stevesk 210: case KEY_RSA:
211: name = _PATH_SSH_CLIENT_ID_RSA;
212: break;
213: default:
1.173 tobias 214: fprintf(stderr, "bad key type\n");
1.92 stevesk 215: exit(1);
216: break;
217: }
1.140 deraadt 218: }
1.35 markus 219: snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
1.37 markus 220: fprintf(stderr, "%s (%s): ", prompt, identity_file);
1.12 markus 221: if (fgets(buf, sizeof(buf), stdin) == NULL)
222: exit(1);
1.162 gilles 223: buf[strcspn(buf, "\n")] = '\0';
1.12 markus 224: if (strcmp(buf, "") != 0)
225: strlcpy(identity_file, buf, sizeof(identity_file));
226: have_identity = 1;
1.7 markus 227: }
228:
1.63 itojun 229: static Key *
1.61 markus 230: load_identity(char *filename)
1.19 markus 231: {
1.52 markus 232: char *pass;
233: Key *prv;
234:
1.55 markus 235: prv = key_load_private(filename, "", NULL);
1.52 markus 236: if (prv == NULL) {
1.61 markus 237: if (identity_passphrase)
238: pass = xstrdup(identity_passphrase);
239: else
1.65 markus 240: pass = read_passphrase("Enter passphrase: ",
241: RP_ALLOW_STDIN);
1.52 markus 242: prv = key_load_private(filename, pass, NULL);
1.19 markus 243: memset(pass, 0, strlen(pass));
244: xfree(pass);
245: }
1.52 markus 246: return prv;
1.19 markus 247: }
248:
1.32 markus 249: #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
1.100 deraadt 250: #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
1.32 markus 251: #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
1.42 stevesk 252: #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
1.19 markus 253:
1.63 itojun 254: static void
1.193 djm 255: do_convert_to_ssh2(struct passwd *pw, Key *k)
1.19 markus 256: {
1.94 markus 257: u_int len;
1.36 markus 258: u_char *blob;
1.176 djm 259: char comment[61];
1.19 markus 260:
1.213 ! djm 261: if (k->type == KEY_RSA1) {
! 262: fprintf(stderr, "version 1 keys are not supported\n");
! 263: exit(1);
! 264: }
1.81 markus 265: if (key_to_blob(k, &blob, &len) <= 0) {
266: fprintf(stderr, "key_to_blob failed\n");
267: exit(1);
268: }
1.176 djm 269: /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
270: snprintf(comment, sizeof(comment),
271: "%u-bit %s, converted by %s@%s from OpenSSH",
1.59 markus 272: key_size(k), key_type(k),
1.19 markus 273: pw->pw_name, hostname);
1.176 djm 274:
275: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
276: fprintf(stdout, "Comment: \"%s\"\n", comment);
1.19 markus 277: dump_base64(stdout, blob, len);
1.32 markus 278: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
1.59 markus 279: key_free(k);
1.21 markus 280: xfree(blob);
1.19 markus 281: exit(0);
282: }
283:
1.63 itojun 284: static void
1.193 djm 285: do_convert_to_pkcs8(Key *k)
286: {
287: switch (key_type_plain(k->type)) {
1.213 ! djm 288: case KEY_RSA1:
1.193 djm 289: case KEY_RSA:
290: if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
291: fatal("PEM_write_RSA_PUBKEY failed");
292: break;
293: case KEY_DSA:
294: if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
295: fatal("PEM_write_DSA_PUBKEY failed");
296: break;
1.200 djm 297: case KEY_ECDSA:
298: if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
299: fatal("PEM_write_EC_PUBKEY failed");
300: break;
1.193 djm 301: default:
302: fatal("%s: unsupported key type %s", __func__, key_type(k));
303: }
304: exit(0);
305: }
306:
307: static void
308: do_convert_to_pem(Key *k)
309: {
310: switch (key_type_plain(k->type)) {
1.213 ! djm 311: case KEY_RSA1:
1.193 djm 312: case KEY_RSA:
313: if (!PEM_write_RSAPublicKey(stdout, k->rsa))
314: fatal("PEM_write_RSAPublicKey failed");
315: break;
316: #if notyet /* OpenSSH 0.9.8 lacks this function */
317: case KEY_DSA:
318: if (!PEM_write_DSAPublicKey(stdout, k->dsa))
319: fatal("PEM_write_DSAPublicKey failed");
320: break;
321: #endif
1.200 djm 322: /* XXX ECDSA? */
1.193 djm 323: default:
324: fatal("%s: unsupported key type %s", __func__, key_type(k));
325: }
326: exit(0);
327: }
328:
329: static void
330: do_convert_to(struct passwd *pw)
331: {
332: Key *k;
333: struct stat st;
334:
335: if (!have_identity)
336: ask_filename(pw, "Enter file in which the key is");
337: if (stat(identity_file, &st) < 0)
338: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
339: if ((k = key_load_public(identity_file, NULL)) == NULL) {
340: if ((k = load_identity(identity_file)) == NULL) {
341: fprintf(stderr, "load failed\n");
342: exit(1);
343: }
344: }
345:
346: switch (convert_format) {
347: case FMT_RFC4716:
348: do_convert_to_ssh2(pw, k);
349: break;
350: case FMT_PKCS8:
351: do_convert_to_pkcs8(k);
352: break;
353: case FMT_PEM:
354: do_convert_to_pem(k);
355: break;
356: default:
357: fatal("%s: unknown key format %d", __func__, convert_format);
358: }
359: exit(0);
360: }
361:
362: static void
1.32 markus 363: buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
364: {
1.116 avsm 365: u_int bignum_bits = buffer_get_int(b);
366: u_int bytes = (bignum_bits + 7) / 8;
1.53 markus 367:
1.32 markus 368: if (buffer_len(b) < bytes)
1.53 markus 369: fatal("buffer_get_bignum_bits: input buffer too small: "
370: "need %d have %d", bytes, buffer_len(b));
1.155 markus 371: if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL)
372: fatal("buffer_get_bignum_bits: BN_bin2bn failed");
1.32 markus 373: buffer_consume(b, bytes);
374: }
375:
1.63 itojun 376: static Key *
1.93 markus 377: do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
1.32 markus 378: {
379: Buffer b;
380: Key *key = NULL;
1.64 markus 381: char *type, *cipher;
1.69 stevesk 382: u_char *sig, data[] = "abcde12345";
1.62 markus 383: int magic, rlen, ktype, i1, i2, i3, i4;
1.64 markus 384: u_int slen;
1.62 markus 385: u_long e;
1.32 markus 386:
387: buffer_init(&b);
388: buffer_append(&b, blob, blen);
389:
1.160 stevesk 390: magic = buffer_get_int(&b);
1.32 markus 391: if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
392: error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC);
393: buffer_free(&b);
394: return NULL;
395: }
1.62 markus 396: i1 = buffer_get_int(&b);
1.32 markus 397: type = buffer_get_string(&b, NULL);
398: cipher = buffer_get_string(&b, NULL);
1.62 markus 399: i2 = buffer_get_int(&b);
400: i3 = buffer_get_int(&b);
401: i4 = buffer_get_int(&b);
1.158 stevesk 402: debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
1.32 markus 403: if (strcmp(cipher, "none") != 0) {
404: error("unsupported cipher %s", cipher);
405: xfree(cipher);
406: buffer_free(&b);
1.53 markus 407: xfree(type);
1.32 markus 408: return NULL;
409: }
410: xfree(cipher);
411:
1.53 markus 412: if (strstr(type, "dsa")) {
413: ktype = KEY_DSA;
414: } else if (strstr(type, "rsa")) {
415: ktype = KEY_RSA;
416: } else {
1.118 markus 417: buffer_free(&b);
1.53 markus 418: xfree(type);
1.32 markus 419: return NULL;
420: }
1.53 markus 421: key = key_new_private(ktype);
422: xfree(type);
423:
424: switch (key->type) {
425: case KEY_DSA:
426: buffer_get_bignum_bits(&b, key->dsa->p);
427: buffer_get_bignum_bits(&b, key->dsa->g);
428: buffer_get_bignum_bits(&b, key->dsa->q);
429: buffer_get_bignum_bits(&b, key->dsa->pub_key);
430: buffer_get_bignum_bits(&b, key->dsa->priv_key);
431: break;
432: case KEY_RSA:
1.160 stevesk 433: e = buffer_get_char(&b);
1.62 markus 434: debug("e %lx", e);
435: if (e < 30) {
436: e <<= 8;
437: e += buffer_get_char(&b);
438: debug("e %lx", e);
439: e <<= 8;
440: e += buffer_get_char(&b);
441: debug("e %lx", e);
442: }
443: if (!BN_set_word(key->rsa->e, e)) {
1.53 markus 444: buffer_free(&b);
445: key_free(key);
446: return NULL;
447: }
448: buffer_get_bignum_bits(&b, key->rsa->d);
449: buffer_get_bignum_bits(&b, key->rsa->n);
450: buffer_get_bignum_bits(&b, key->rsa->iqmp);
451: buffer_get_bignum_bits(&b, key->rsa->q);
452: buffer_get_bignum_bits(&b, key->rsa->p);
1.68 markus 453: rsa_generate_additional_parameters(key->rsa);
1.53 markus 454: break;
455: }
1.32 markus 456: rlen = buffer_len(&b);
1.85 deraadt 457: if (rlen != 0)
1.53 markus 458: error("do_convert_private_ssh2_from_blob: "
459: "remaining bytes in key blob %d", rlen);
1.32 markus 460: buffer_free(&b);
1.64 markus 461:
462: /* try the key */
463: key_sign(key, &sig, &slen, data, sizeof(data));
464: key_verify(key, sig, slen, data, sizeof(data));
465: xfree(sig);
1.32 markus 466: return key;
467: }
468:
1.137 dtucker 469: static int
470: get_line(FILE *fp, char *line, size_t len)
471: {
472: int c;
473: size_t pos = 0;
474:
475: line[0] = '\0';
476: while ((c = fgetc(fp)) != EOF) {
477: if (pos >= len - 1) {
478: fprintf(stderr, "input line too long.\n");
479: exit(1);
480: }
1.140 deraadt 481: switch (c) {
1.137 dtucker 482: case '\r':
483: c = fgetc(fp);
484: if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) {
485: fprintf(stderr, "unget: %s\n", strerror(errno));
486: exit(1);
487: }
488: return pos;
489: case '\n':
490: return pos;
491: }
492: line[pos++] = c;
493: line[pos] = '\0';
494: }
1.157 stevesk 495: /* We reached EOF */
496: return -1;
1.137 dtucker 497: }
498:
1.63 itojun 499: static void
1.193 djm 500: do_convert_from_ssh2(struct passwd *pw, Key **k, int *private)
1.19 markus 501: {
502: int blen;
1.98 markus 503: u_int len;
1.137 dtucker 504: char line[1024];
1.80 stevesk 505: u_char blob[8096];
1.19 markus 506: char encoded[8096];
1.193 djm 507: int escaped = 0;
1.19 markus 508: FILE *fp;
509:
1.191 djm 510: if ((fp = fopen(identity_file, "r")) == NULL)
511: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.19 markus 512: encoded[0] = '\0';
1.137 dtucker 513: while ((blen = get_line(fp, line, sizeof(line))) != -1) {
514: if (line[blen - 1] == '\\')
1.25 markus 515: escaped++;
1.19 markus 516: if (strncmp(line, "----", 4) == 0 ||
517: strstr(line, ": ") != NULL) {
1.32 markus 518: if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
1.193 djm 519: *private = 1;
1.64 markus 520: if (strstr(line, " END ") != NULL) {
521: break;
522: }
1.60 markus 523: /* fprintf(stderr, "ignore: %s", line); */
1.19 markus 524: continue;
525: }
1.25 markus 526: if (escaped) {
527: escaped--;
1.60 markus 528: /* fprintf(stderr, "escaped: %s", line); */
1.25 markus 529: continue;
1.19 markus 530: }
531: strlcat(encoded, line, sizeof(encoded));
532: }
1.98 markus 533: len = strlen(encoded);
534: if (((len % 4) == 3) &&
535: (encoded[len-1] == '=') &&
536: (encoded[len-2] == '=') &&
537: (encoded[len-3] == '='))
538: encoded[len-3] = '\0';
1.91 stevesk 539: blen = uudecode(encoded, blob, sizeof(blob));
1.19 markus 540: if (blen < 0) {
541: fprintf(stderr, "uudecode failed.\n");
542: exit(1);
543: }
1.193 djm 544: *k = *private ?
1.32 markus 545: do_convert_private_ssh2_from_blob(blob, blen) :
1.33 markus 546: key_from_blob(blob, blen);
1.193 djm 547: if (*k == NULL) {
1.32 markus 548: fprintf(stderr, "decode blob failed.\n");
549: exit(1);
550: }
1.193 djm 551: fclose(fp);
552: }
553:
554: static void
555: do_convert_from_pkcs8(Key **k, int *private)
556: {
557: EVP_PKEY *pubkey;
558: FILE *fp;
559:
560: if ((fp = fopen(identity_file, "r")) == NULL)
561: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
562: if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
563: fatal("%s: %s is not a recognised public key format", __func__,
564: identity_file);
565: }
566: fclose(fp);
567: switch (EVP_PKEY_type(pubkey->type)) {
568: case EVP_PKEY_RSA:
569: *k = key_new(KEY_UNSPEC);
570: (*k)->type = KEY_RSA;
571: (*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
572: break;
573: case EVP_PKEY_DSA:
574: *k = key_new(KEY_UNSPEC);
575: (*k)->type = KEY_DSA;
576: (*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
577: break;
1.200 djm 578: case EVP_PKEY_EC:
579: *k = key_new(KEY_UNSPEC);
580: (*k)->type = KEY_ECDSA;
581: (*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
1.204 djm 582: (*k)->ecdsa_nid = key_ecdsa_key_to_nid((*k)->ecdsa);
1.200 djm 583: break;
1.193 djm 584: default:
585: fatal("%s: unsupported pubkey type %d", __func__,
586: EVP_PKEY_type(pubkey->type));
587: }
588: EVP_PKEY_free(pubkey);
589: return;
590: }
591:
592: static void
593: do_convert_from_pem(Key **k, int *private)
594: {
595: FILE *fp;
596: RSA *rsa;
597: #ifdef notyet
598: DSA *dsa;
599: #endif
600:
601: if ((fp = fopen(identity_file, "r")) == NULL)
602: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
603: if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
604: *k = key_new(KEY_UNSPEC);
605: (*k)->type = KEY_RSA;
606: (*k)->rsa = rsa;
607: fclose(fp);
608: return;
609: }
610: #if notyet /* OpenSSH 0.9.8 lacks this function */
611: rewind(fp);
612: if ((dsa = PEM_read_DSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
613: *k = key_new(KEY_UNSPEC);
614: (*k)->type = KEY_DSA;
615: (*k)->dsa = dsa;
616: fclose(fp);
617: return;
618: }
1.200 djm 619: /* XXX ECDSA */
1.193 djm 620: #endif
621: fatal("%s: unrecognised raw private key format", __func__);
622: }
623:
624: static void
625: do_convert_from(struct passwd *pw)
626: {
627: Key *k = NULL;
1.195 djm 628: int private = 0, ok = 0;
1.193 djm 629: struct stat st;
630:
631: if (!have_identity)
632: ask_filename(pw, "Enter file in which the key is");
633: if (stat(identity_file, &st) < 0)
634: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
635:
636: switch (convert_format) {
637: case FMT_RFC4716:
638: do_convert_from_ssh2(pw, &k, &private);
639: break;
640: case FMT_PKCS8:
641: do_convert_from_pkcs8(&k, &private);
642: break;
643: case FMT_PEM:
644: do_convert_from_pem(&k, &private);
645: break;
646: default:
647: fatal("%s: unknown key format %d", __func__, convert_format);
648: }
649:
650: if (!private)
651: ok = key_write(k, stdout);
652: if (ok)
653: fprintf(stdout, "\n");
654: else {
655: switch (k->type) {
656: case KEY_DSA:
657: ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
658: NULL, 0, NULL, NULL);
659: break;
1.200 djm 660: case KEY_ECDSA:
661: ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
662: NULL, 0, NULL, NULL);
663: break;
1.193 djm 664: case KEY_RSA:
665: ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
666: NULL, 0, NULL, NULL);
667: break;
668: default:
669: fatal("%s: unsupported key type %s", __func__,
670: key_type(k));
671: }
672: }
673:
1.32 markus 674: if (!ok) {
1.173 tobias 675: fprintf(stderr, "key write failed\n");
1.32 markus 676: exit(1);
677: }
1.19 markus 678: key_free(k);
679: exit(0);
680: }
681:
1.63 itojun 682: static void
1.19 markus 683: do_print_public(struct passwd *pw)
684: {
1.52 markus 685: Key *prv;
1.19 markus 686: struct stat st;
687:
688: if (!have_identity)
689: ask_filename(pw, "Enter file in which the key is");
690: if (stat(identity_file, &st) < 0) {
691: perror(identity_file);
692: exit(1);
693: }
1.61 markus 694: prv = load_identity(identity_file);
1.52 markus 695: if (prv == NULL) {
1.19 markus 696: fprintf(stderr, "load failed\n");
697: exit(1);
698: }
1.52 markus 699: if (!key_write(prv, stdout))
1.19 markus 700: fprintf(stderr, "key_write failed");
1.52 markus 701: key_free(prv);
1.19 markus 702: fprintf(stdout, "\n");
703: exit(0);
704: }
705:
1.66 markus 706: static void
1.197 djm 707: do_download(struct passwd *pw)
1.75 markus 708: {
1.177 markus 709: #ifdef ENABLE_PKCS11
1.97 markus 710: Key **keys = NULL;
1.177 markus 711: int i, nkeys;
1.75 markus 712:
1.177 markus 713: pkcs11_init(0);
714: nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
715: if (nkeys <= 0)
716: fatal("cannot read public key from pkcs11");
717: for (i = 0; i < nkeys; i++) {
1.97 markus 718: key_write(keys[i], stdout);
719: key_free(keys[i]);
720: fprintf(stdout, "\n");
721: }
722: xfree(keys);
1.177 markus 723: pkcs11_terminate();
1.75 markus 724: exit(0);
1.177 markus 725: #else
726: fatal("no pkcs11 support");
727: #endif /* ENABLE_PKCS11 */
1.75 markus 728: }
1.66 markus 729:
1.63 itojun 730: static void
1.8 markus 731: do_fingerprint(struct passwd *pw)
732: {
1.15 markus 733: FILE *f;
1.19 markus 734: Key *public;
1.167 grunk 735: char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra;
1.165 djm 736: int i, skip = 0, num = 0, invalid = 1;
1.84 stevesk 737: enum fp_rep rep;
738: enum fp_type fptype;
1.12 markus 739: struct stat st;
740:
1.52 markus 741: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
742: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
1.49 markus 743:
1.12 markus 744: if (!have_identity)
745: ask_filename(pw, "Enter file in which the key is");
746: if (stat(identity_file, &st) < 0) {
747: perror(identity_file);
748: exit(1);
749: }
1.52 markus 750: public = key_load_public(identity_file, &comment);
751: if (public != NULL) {
752: fp = key_fingerprint(public, fptype, rep);
1.175 djm 753: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.170 grunk 754: printf("%u %s %s (%s)\n", key_size(public), fp, comment,
755: key_type(public));
1.169 grunk 756: if (log_level >= SYSLOG_LEVEL_VERBOSE)
757: printf("%s\n", ra);
1.33 markus 758: key_free(public);
759: xfree(comment);
1.167 grunk 760: xfree(ra);
1.49 markus 761: xfree(fp);
1.15 markus 762: exit(0);
763: }
1.144 markus 764: if (comment) {
1.52 markus 765: xfree(comment);
1.144 markus 766: comment = NULL;
767: }
1.15 markus 768:
1.191 djm 769: if ((f = fopen(identity_file, "r")) == NULL)
770: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
771:
772: while (fgets(line, sizeof(line), f)) {
773: if ((cp = strchr(line, '\n')) == NULL) {
774: error("line %d too long: %.40s...",
775: num + 1, line);
776: skip = 1;
777: continue;
778: }
779: num++;
780: if (skip) {
781: skip = 0;
782: continue;
783: }
784: *cp = '\0';
785:
786: /* Skip leading whitespace, empty and comment lines. */
787: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
788: ;
789: if (!*cp || *cp == '\n' || *cp == '#')
790: continue;
791: i = strtol(cp, &ep, 10);
792: if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
793: int quoted = 0;
794: comment = cp;
795: for (; *cp && (quoted || (*cp != ' ' &&
796: *cp != '\t')); cp++) {
797: if (*cp == '\\' && cp[1] == '"')
798: cp++; /* Skip both */
799: else if (*cp == '"')
800: quoted = !quoted;
1.15 markus 801: }
1.191 djm 802: if (!*cp)
1.15 markus 803: continue;
1.191 djm 804: *cp++ = '\0';
805: }
806: ep = cp;
807: public = key_new(KEY_RSA1);
808: if (key_read(public, &cp) != 1) {
809: cp = ep;
810: key_free(public);
811: public = key_new(KEY_UNSPEC);
1.38 markus 812: if (key_read(public, &cp) != 1) {
813: key_free(public);
1.191 djm 814: continue;
1.12 markus 815: }
816: }
1.191 djm 817: comment = *cp ? cp : comment;
818: fp = key_fingerprint(public, fptype, rep);
819: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
820: printf("%u %s %s (%s)\n", key_size(public), fp,
821: comment ? comment : "no comment", key_type(public));
822: if (log_level >= SYSLOG_LEVEL_VERBOSE)
823: printf("%s\n", ra);
824: xfree(ra);
825: xfree(fp);
826: key_free(public);
827: invalid = 0;
1.15 markus 828: }
1.191 djm 829: fclose(f);
830:
1.15 markus 831: if (invalid) {
1.83 markus 832: printf("%s is not a public key file.\n", identity_file);
1.15 markus 833: exit(1);
1.12 markus 834: }
835: exit(0);
1.8 markus 836: }
837:
1.119 djm 838: static void
1.206 stevesk 839: do_gen_all_hostkeys(struct passwd *pw)
840: {
841: struct {
842: char *key_type;
843: char *key_type_display;
844: char *path;
845: } key_types[] = {
846: { "rsa1", "RSA1", _PATH_HOST_KEY_FILE },
847: { "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
848: { "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
849: { "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
850: { NULL, NULL, NULL }
851: };
852:
853: int first = 0;
854: struct stat st;
855: Key *private, *public;
856: char comment[1024];
857: int i, type, fd;
858: FILE *f;
859:
860: for (i = 0; key_types[i].key_type; i++) {
861: if (stat(key_types[i].path, &st) == 0)
862: continue;
863: if (errno != ENOENT) {
864: printf("Could not stat %s: %s", key_types[i].path,
865: strerror(errno));
866: first = 0;
867: continue;
868: }
869:
870: if (first == 0) {
871: first = 1;
872: printf("%s: generating new host keys: ", __progname);
873: }
874: printf("%s ", key_types[i].key_type_display);
875: fflush(stdout);
876: arc4random_stir();
877: type = key_type_from_name(key_types[i].key_type);
878: strlcpy(identity_file, key_types[i].path, sizeof(identity_file));
879: bits = 0;
880: type_bits_valid(type, &bits);
881: private = key_generate(type, bits);
882: if (private == NULL) {
883: fprintf(stderr, "key_generate failed\n");
884: first = 0;
885: continue;
886: }
887: public = key_from_private(private);
888: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
889: hostname);
890: if (!key_save_private(private, identity_file, "", comment)) {
891: printf("Saving the key failed: %s.\n", identity_file);
892: key_free(private);
893: key_free(public);
894: first = 0;
895: continue;
896: }
897: key_free(private);
898: arc4random_stir();
899: strlcat(identity_file, ".pub", sizeof(identity_file));
900: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
901: if (fd == -1) {
902: printf("Could not save your public key in %s\n",
903: identity_file);
904: key_free(public);
905: first = 0;
906: continue;
907: }
908: f = fdopen(fd, "w");
909: if (f == NULL) {
910: printf("fdopen %s failed\n", identity_file);
911: key_free(public);
912: first = 0;
913: continue;
914: }
915: if (!key_write(public, f)) {
916: fprintf(stderr, "write key failed\n");
917: key_free(public);
918: first = 0;
919: continue;
920: }
921: fprintf(f, " %s\n", comment);
922: fclose(f);
923: key_free(public);
924:
925: }
926: if (first != 0)
927: printf("\n");
928: }
929:
930: static void
1.179 djm 931: printhost(FILE *f, const char *name, Key *public, int ca, int hash)
1.119 djm 932: {
1.166 djm 933: if (print_fingerprint) {
934: enum fp_rep rep;
935: enum fp_type fptype;
1.167 grunk 936: char *fp, *ra;
1.166 djm 937:
938: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
939: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
940: fp = key_fingerprint(public, fptype, rep);
1.175 djm 941: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.171 sthen 942: printf("%u %s %s (%s)\n", key_size(public), fp, name,
943: key_type(public));
944: if (log_level >= SYSLOG_LEVEL_VERBOSE)
945: printf("%s\n", ra);
1.167 grunk 946: xfree(ra);
1.166 djm 947: xfree(fp);
948: } else {
949: if (hash && (name = host_hash(name, NULL, 0)) == NULL)
950: fatal("hash_host failed");
1.179 djm 951: fprintf(f, "%s%s%s ", ca ? CA_MARKER : "", ca ? " " : "", name);
1.166 djm 952: if (!key_write(public, f))
953: fatal("key_write failed");
954: fprintf(f, "\n");
955: }
1.119 djm 956: }
957:
958: static void
959: do_known_hosts(struct passwd *pw, const char *name)
960: {
961: FILE *in, *out = stdout;
1.179 djm 962: Key *pub;
1.119 djm 963: char *cp, *cp2, *kp, *kp2;
964: char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN];
1.165 djm 965: int c, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0;
1.179 djm 966: int ca;
1.119 djm 967:
968: if (!have_identity) {
969: cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
970: if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
971: sizeof(identity_file))
972: fatal("Specified known hosts path too long");
973: xfree(cp);
974: have_identity = 1;
975: }
976: if ((in = fopen(identity_file, "r")) == NULL)
1.191 djm 977: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.119 djm 978:
979: /*
980: * Find hosts goes to stdout, hash and deletions happen in-place
981: * A corner case is ssh-keygen -HF foo, which should go to stdout
982: */
983: if (!find_host && (hash_hosts || delete_host)) {
984: if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
985: strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
986: strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
987: strlcat(old, ".old", sizeof(old)) >= sizeof(old))
988: fatal("known_hosts path too long");
989: umask(077);
990: if ((c = mkstemp(tmp)) == -1)
991: fatal("mkstemp: %s", strerror(errno));
992: if ((out = fdopen(c, "w")) == NULL) {
993: c = errno;
994: unlink(tmp);
995: fatal("fdopen: %s", strerror(c));
996: }
997: inplace = 1;
998: }
999:
1000: while (fgets(line, sizeof(line), in)) {
1.163 chl 1001: if ((cp = strchr(line, '\n')) == NULL) {
1.165 djm 1002: error("line %d too long: %.40s...", num + 1, line);
1.119 djm 1003: skip = 1;
1004: invalid = 1;
1005: continue;
1006: }
1.163 chl 1007: num++;
1.119 djm 1008: if (skip) {
1009: skip = 0;
1010: continue;
1011: }
1.163 chl 1012: *cp = '\0';
1.119 djm 1013:
1014: /* Skip leading whitespace, empty and comment lines. */
1015: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
1016: ;
1017: if (!*cp || *cp == '\n' || *cp == '#') {
1018: if (inplace)
1019: fprintf(out, "%s\n", cp);
1020: continue;
1021: }
1.179 djm 1022: /* Check whether this is a CA key */
1023: if (strncasecmp(cp, CA_MARKER, sizeof(CA_MARKER) - 1) == 0 &&
1024: (cp[sizeof(CA_MARKER) - 1] == ' ' ||
1025: cp[sizeof(CA_MARKER) - 1] == '\t')) {
1026: ca = 1;
1027: cp += sizeof(CA_MARKER);
1028: } else
1029: ca = 0;
1030:
1.119 djm 1031: /* Find the end of the host name portion. */
1032: for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++)
1033: ;
1.179 djm 1034:
1.119 djm 1035: if (*kp == '\0' || *(kp + 1) == '\0') {
1036: error("line %d missing key: %.40s...",
1037: num, line);
1038: invalid = 1;
1039: continue;
1040: }
1041: *kp++ = '\0';
1042: kp2 = kp;
1043:
1.179 djm 1044: pub = key_new(KEY_RSA1);
1045: if (key_read(pub, &kp) != 1) {
1.119 djm 1046: kp = kp2;
1.179 djm 1047: key_free(pub);
1048: pub = key_new(KEY_UNSPEC);
1049: if (key_read(pub, &kp) != 1) {
1.119 djm 1050: error("line %d invalid key: %.40s...",
1051: num, line);
1.179 djm 1052: key_free(pub);
1.119 djm 1053: invalid = 1;
1054: continue;
1055: }
1056: }
1057:
1058: if (*cp == HASH_DELIM) {
1059: if (find_host || delete_host) {
1060: cp2 = host_hash(name, cp, strlen(cp));
1061: if (cp2 == NULL) {
1062: error("line %d: invalid hashed "
1063: "name: %.64s...", num, line);
1064: invalid = 1;
1065: continue;
1066: }
1067: c = (strcmp(cp2, cp) == 0);
1068: if (find_host && c) {
1069: printf("# Host %s found: "
1.179 djm 1070: "line %d type %s%s\n", name,
1071: num, key_type(pub),
1072: ca ? " (CA key)" : "");
1073: printhost(out, cp, pub, ca, 0);
1.119 djm 1074: }
1.179 djm 1075: if (delete_host && !c && !ca)
1076: printhost(out, cp, pub, ca, 0);
1.119 djm 1077: } else if (hash_hosts)
1.179 djm 1078: printhost(out, cp, pub, ca, 0);
1.119 djm 1079: } else {
1080: if (find_host || delete_host) {
1081: c = (match_hostname(name, cp,
1082: strlen(cp)) == 1);
1083: if (find_host && c) {
1084: printf("# Host %s found: "
1.179 djm 1085: "line %d type %s%s\n", name,
1086: num, key_type(pub),
1087: ca ? " (CA key)" : "");
1088: printhost(out, name, pub,
1089: ca, hash_hosts && !ca);
1.119 djm 1090: }
1.179 djm 1091: if (delete_host && !c && !ca)
1092: printhost(out, cp, pub, ca, 0);
1.119 djm 1093: } else if (hash_hosts) {
1.121 deraadt 1094: for (cp2 = strsep(&cp, ",");
1.119 djm 1095: cp2 != NULL && *cp2 != '\0';
1.120 djm 1096: cp2 = strsep(&cp, ",")) {
1.179 djm 1097: if (ca) {
1098: fprintf(stderr, "Warning: "
1099: "ignoring CA key for host: "
1100: "%.64s\n", cp2);
1101: printhost(out, cp2, pub, ca, 0);
1102: } else if (strcspn(cp2, "*?!") !=
1103: strlen(cp2)) {
1.120 djm 1104: fprintf(stderr, "Warning: "
1105: "ignoring host name with "
1106: "metacharacters: %.64s\n",
1107: cp2);
1.179 djm 1108: printhost(out, cp2, pub, ca, 0);
1109: } else
1110: printhost(out, cp2, pub, ca, 1);
1.120 djm 1111: }
1.119 djm 1112: has_unhashed = 1;
1113: }
1114: }
1.179 djm 1115: key_free(pub);
1.119 djm 1116: }
1117: fclose(in);
1118:
1119: if (invalid) {
1.165 djm 1120: fprintf(stderr, "%s is not a valid known_hosts file.\n",
1.119 djm 1121: identity_file);
1122: if (inplace) {
1123: fprintf(stderr, "Not replacing existing known_hosts "
1.122 markus 1124: "file because of errors\n");
1.119 djm 1125: fclose(out);
1126: unlink(tmp);
1127: }
1128: exit(1);
1129: }
1130:
1131: if (inplace) {
1132: fclose(out);
1133:
1134: /* Backup existing file */
1135: if (unlink(old) == -1 && errno != ENOENT)
1136: fatal("unlink %.100s: %s", old, strerror(errno));
1137: if (link(identity_file, old) == -1)
1138: fatal("link %.100s to %.100s: %s", identity_file, old,
1139: strerror(errno));
1140: /* Move new one into place */
1141: if (rename(tmp, identity_file) == -1) {
1142: error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
1143: strerror(errno));
1144: unlink(tmp);
1145: unlink(old);
1146: exit(1);
1147: }
1148:
1149: fprintf(stderr, "%s updated.\n", identity_file);
1150: fprintf(stderr, "Original contents retained as %s\n", old);
1151: if (has_unhashed) {
1152: fprintf(stderr, "WARNING: %s contains unhashed "
1153: "entries\n", old);
1154: fprintf(stderr, "Delete this file to ensure privacy "
1.128 djm 1155: "of hostnames\n");
1.119 djm 1156: }
1157: }
1158:
1159: exit(0);
1160: }
1161:
1.13 deraadt 1162: /*
1163: * Perform changing a passphrase. The argument is the passwd structure
1164: * for the current user.
1165: */
1.63 itojun 1166: static void
1.7 markus 1167: do_change_passphrase(struct passwd *pw)
1168: {
1.12 markus 1169: char *comment;
1170: char *old_passphrase, *passphrase1, *passphrase2;
1171: struct stat st;
1.19 markus 1172: Key *private;
1.12 markus 1173:
1174: if (!have_identity)
1175: ask_filename(pw, "Enter file in which the key is");
1176: if (stat(identity_file, &st) < 0) {
1177: perror(identity_file);
1178: exit(1);
1179: }
1180: /* Try to load the file with empty passphrase. */
1.52 markus 1181: private = key_load_private(identity_file, "", &comment);
1182: if (private == NULL) {
1.12 markus 1183: if (identity_passphrase)
1184: old_passphrase = xstrdup(identity_passphrase);
1185: else
1.65 markus 1186: old_passphrase =
1187: read_passphrase("Enter old passphrase: ",
1188: RP_ALLOW_STDIN);
1189: private = key_load_private(identity_file, old_passphrase,
1190: &comment);
1.52 markus 1191: memset(old_passphrase, 0, strlen(old_passphrase));
1192: xfree(old_passphrase);
1193: if (private == NULL) {
1.12 markus 1194: printf("Bad passphrase.\n");
1195: exit(1);
1196: }
1197: }
1198: printf("Key has comment '%s'\n", comment);
1199:
1200: /* Ask the new passphrase (twice). */
1201: if (identity_new_passphrase) {
1202: passphrase1 = xstrdup(identity_new_passphrase);
1203: passphrase2 = NULL;
1204: } else {
1205: passphrase1 =
1.65 markus 1206: read_passphrase("Enter new passphrase (empty for no "
1207: "passphrase): ", RP_ALLOW_STDIN);
1208: passphrase2 = read_passphrase("Enter same passphrase again: ",
1.86 deraadt 1209: RP_ALLOW_STDIN);
1.12 markus 1210:
1211: /* Verify that they are the same. */
1212: if (strcmp(passphrase1, passphrase2) != 0) {
1213: memset(passphrase1, 0, strlen(passphrase1));
1214: memset(passphrase2, 0, strlen(passphrase2));
1215: xfree(passphrase1);
1216: xfree(passphrase2);
1217: printf("Pass phrases do not match. Try again.\n");
1218: exit(1);
1219: }
1220: /* Destroy the other copy. */
1221: memset(passphrase2, 0, strlen(passphrase2));
1222: xfree(passphrase2);
1223: }
1224:
1225: /* Save the file using the new passphrase. */
1.52 markus 1226: if (!key_save_private(private, identity_file, passphrase1, comment)) {
1.56 markus 1227: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 1228: memset(passphrase1, 0, strlen(passphrase1));
1229: xfree(passphrase1);
1.19 markus 1230: key_free(private);
1.12 markus 1231: xfree(comment);
1232: exit(1);
1233: }
1234: /* Destroy the passphrase and the copy of the key in memory. */
1235: memset(passphrase1, 0, strlen(passphrase1));
1236: xfree(passphrase1);
1.19 markus 1237: key_free(private); /* Destroys contents */
1.12 markus 1238: xfree(comment);
1.1 deraadt 1239:
1.12 markus 1240: printf("Your identification has been saved with the new passphrase.\n");
1241: exit(0);
1.1 deraadt 1242: }
1243:
1.105 jakob 1244: /*
1245: * Print the SSHFP RR.
1246: */
1.138 jakob 1247: static int
1248: do_print_resource_record(struct passwd *pw, char *fname, char *hname)
1.105 jakob 1249: {
1250: Key *public;
1251: char *comment = NULL;
1252: struct stat st;
1253:
1.138 jakob 1254: if (fname == NULL)
1.105 jakob 1255: ask_filename(pw, "Enter file in which the key is");
1.138 jakob 1256: if (stat(fname, &st) < 0) {
1257: if (errno == ENOENT)
1258: return 0;
1259: perror(fname);
1.105 jakob 1260: exit(1);
1261: }
1.138 jakob 1262: public = key_load_public(fname, &comment);
1.105 jakob 1263: if (public != NULL) {
1.116 avsm 1264: export_dns_rr(hname, public, stdout, print_generic);
1.105 jakob 1265: key_free(public);
1266: xfree(comment);
1.138 jakob 1267: return 1;
1.105 jakob 1268: }
1269: if (comment)
1270: xfree(comment);
1271:
1.138 jakob 1272: printf("failed to read v2 public key from %s.\n", fname);
1.105 jakob 1273: exit(1);
1274: }
1275:
1.13 deraadt 1276: /*
1277: * Change the comment of a private key file.
1278: */
1.63 itojun 1279: static void
1.2 provos 1280: do_change_comment(struct passwd *pw)
1.1 deraadt 1281: {
1.46 deraadt 1282: char new_comment[1024], *comment, *passphrase;
1.52 markus 1283: Key *private;
1284: Key *public;
1.12 markus 1285: struct stat st;
1286: FILE *f;
1.46 deraadt 1287: int fd;
1.12 markus 1288:
1289: if (!have_identity)
1290: ask_filename(pw, "Enter file in which the key is");
1291: if (stat(identity_file, &st) < 0) {
1292: perror(identity_file);
1293: exit(1);
1294: }
1.52 markus 1295: private = key_load_private(identity_file, "", &comment);
1296: if (private == NULL) {
1.12 markus 1297: if (identity_passphrase)
1298: passphrase = xstrdup(identity_passphrase);
1299: else if (identity_new_passphrase)
1300: passphrase = xstrdup(identity_new_passphrase);
1301: else
1.65 markus 1302: passphrase = read_passphrase("Enter passphrase: ",
1303: RP_ALLOW_STDIN);
1.12 markus 1304: /* Try to load using the passphrase. */
1.52 markus 1305: private = key_load_private(identity_file, passphrase, &comment);
1306: if (private == NULL) {
1.12 markus 1307: memset(passphrase, 0, strlen(passphrase));
1308: xfree(passphrase);
1309: printf("Bad passphrase.\n");
1310: exit(1);
1311: }
1.52 markus 1312: } else {
1313: passphrase = xstrdup("");
1.12 markus 1314: }
1.52 markus 1315: if (private->type != KEY_RSA1) {
1316: fprintf(stderr, "Comments are only supported for RSA1 keys.\n");
1317: key_free(private);
1318: exit(1);
1.86 deraadt 1319: }
1.12 markus 1320: printf("Key now has comment '%s'\n", comment);
1321:
1322: if (identity_comment) {
1323: strlcpy(new_comment, identity_comment, sizeof(new_comment));
1324: } else {
1325: printf("Enter new comment: ");
1326: fflush(stdout);
1327: if (!fgets(new_comment, sizeof(new_comment), stdin)) {
1328: memset(passphrase, 0, strlen(passphrase));
1.19 markus 1329: key_free(private);
1.12 markus 1330: exit(1);
1331: }
1.162 gilles 1332: new_comment[strcspn(new_comment, "\n")] = '\0';
1.12 markus 1333: }
1334:
1335: /* Save the file using the new passphrase. */
1.52 markus 1336: if (!key_save_private(private, identity_file, passphrase, new_comment)) {
1.56 markus 1337: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 1338: memset(passphrase, 0, strlen(passphrase));
1339: xfree(passphrase);
1.19 markus 1340: key_free(private);
1.12 markus 1341: xfree(comment);
1342: exit(1);
1343: }
1344: memset(passphrase, 0, strlen(passphrase));
1345: xfree(passphrase);
1.52 markus 1346: public = key_from_private(private);
1.19 markus 1347: key_free(private);
1.12 markus 1348:
1349: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 1350: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1351: if (fd == -1) {
1.12 markus 1352: printf("Could not save your public key in %s\n", identity_file);
1353: exit(1);
1354: }
1.46 deraadt 1355: f = fdopen(fd, "w");
1356: if (f == NULL) {
1.173 tobias 1357: printf("fdopen %s failed\n", identity_file);
1.46 deraadt 1358: exit(1);
1359: }
1.19 markus 1360: if (!key_write(public, f))
1.173 tobias 1361: fprintf(stderr, "write key failed\n");
1.19 markus 1362: key_free(public);
1363: fprintf(f, " %s\n", new_comment);
1.12 markus 1364: fclose(f);
1.1 deraadt 1365:
1.12 markus 1366: xfree(comment);
1.1 deraadt 1367:
1.12 markus 1368: printf("The comment in your key file has been changed.\n");
1369: exit(0);
1.1 deraadt 1370: }
1371:
1.179 djm 1372: static const char *
1.182 djm 1373: fmt_validity(u_int64_t valid_from, u_int64_t valid_to)
1.179 djm 1374: {
1375: char from[32], to[32];
1376: static char ret[64];
1377: time_t tt;
1378: struct tm *tm;
1379:
1380: *from = *to = '\0';
1.182 djm 1381: if (valid_from == 0 && valid_to == 0xffffffffffffffffULL)
1.179 djm 1382: return "forever";
1383:
1.182 djm 1384: if (valid_from != 0) {
1.179 djm 1385: /* XXX revisit INT_MAX in 2038 :) */
1.182 djm 1386: tt = valid_from > INT_MAX ? INT_MAX : valid_from;
1.179 djm 1387: tm = localtime(&tt);
1388: strftime(from, sizeof(from), "%Y-%m-%dT%H:%M:%S", tm);
1389: }
1.182 djm 1390: if (valid_to != 0xffffffffffffffffULL) {
1.179 djm 1391: /* XXX revisit INT_MAX in 2038 :) */
1.182 djm 1392: tt = valid_to > INT_MAX ? INT_MAX : valid_to;
1.179 djm 1393: tm = localtime(&tt);
1394: strftime(to, sizeof(to), "%Y-%m-%dT%H:%M:%S", tm);
1395: }
1396:
1.182 djm 1397: if (valid_from == 0) {
1.179 djm 1398: snprintf(ret, sizeof(ret), "before %s", to);
1399: return ret;
1400: }
1.182 djm 1401: if (valid_to == 0xffffffffffffffffULL) {
1.179 djm 1402: snprintf(ret, sizeof(ret), "after %s", from);
1403: return ret;
1404: }
1405:
1406: snprintf(ret, sizeof(ret), "from %s to %s", from, to);
1407: return ret;
1408: }
1409:
1410: static void
1.186 djm 1411: add_flag_option(Buffer *c, const char *name)
1.179 djm 1412: {
1413: debug3("%s: %s", __func__, name);
1414: buffer_put_cstring(c, name);
1415: buffer_put_string(c, NULL, 0);
1416: }
1417:
1418: static void
1.186 djm 1419: add_string_option(Buffer *c, const char *name, const char *value)
1.179 djm 1420: {
1421: Buffer b;
1422:
1423: debug3("%s: %s=%s", __func__, name, value);
1424: buffer_init(&b);
1425: buffer_put_cstring(&b, value);
1426:
1427: buffer_put_cstring(c, name);
1428: buffer_put_string(c, buffer_ptr(&b), buffer_len(&b));
1429:
1430: buffer_free(&b);
1431: }
1432:
1.190 djm 1433: #define OPTIONS_CRITICAL 1
1434: #define OPTIONS_EXTENSIONS 2
1.179 djm 1435: static void
1.190 djm 1436: prepare_options_buf(Buffer *c, int which)
1.179 djm 1437: {
1438: buffer_clear(c);
1.196 djm 1439: if ((which & OPTIONS_CRITICAL) != 0 &&
1440: certflags_command != NULL)
1441: add_string_option(c, "force-command", certflags_command);
1.190 djm 1442: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.210 djm 1443: (certflags_flags & CERTOPT_X_FWD) != 0)
1444: add_flag_option(c, "permit-X11-forwarding");
1445: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.190 djm 1446: (certflags_flags & CERTOPT_AGENT_FWD) != 0)
1.186 djm 1447: add_flag_option(c, "permit-agent-forwarding");
1.190 djm 1448: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1449: (certflags_flags & CERTOPT_PORT_FWD) != 0)
1.186 djm 1450: add_flag_option(c, "permit-port-forwarding");
1.190 djm 1451: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1452: (certflags_flags & CERTOPT_PTY) != 0)
1.186 djm 1453: add_flag_option(c, "permit-pty");
1.190 djm 1454: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1455: (certflags_flags & CERTOPT_USER_RC) != 0)
1.186 djm 1456: add_flag_option(c, "permit-user-rc");
1.190 djm 1457: if ((which & OPTIONS_CRITICAL) != 0 &&
1458: certflags_src_addr != NULL)
1459: add_string_option(c, "source-address", certflags_src_addr);
1.179 djm 1460: }
1461:
1.197 djm 1462: static Key *
1463: load_pkcs11_key(char *path)
1464: {
1465: #ifdef ENABLE_PKCS11
1466: Key **keys = NULL, *public, *private = NULL;
1467: int i, nkeys;
1468:
1469: if ((public = key_load_public(path, NULL)) == NULL)
1470: fatal("Couldn't load CA public key \"%s\"", path);
1471:
1472: nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
1473: debug3("%s: %d keys", __func__, nkeys);
1474: if (nkeys <= 0)
1475: fatal("cannot read public key from pkcs11");
1476: for (i = 0; i < nkeys; i++) {
1477: if (key_equal_public(public, keys[i])) {
1478: private = keys[i];
1479: continue;
1480: }
1481: key_free(keys[i]);
1482: }
1483: xfree(keys);
1484: key_free(public);
1485: return private;
1486: #else
1487: fatal("no pkcs11 support");
1488: #endif /* ENABLE_PKCS11 */
1489: }
1490:
1.179 djm 1491: static void
1492: do_ca_sign(struct passwd *pw, int argc, char **argv)
1493: {
1494: int i, fd;
1495: u_int n;
1496: Key *ca, *public;
1497: char *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
1498: FILE *f;
1.186 djm 1499: int v00 = 0; /* legacy keys */
1.179 djm 1500:
1.186 djm 1501: if (key_type_name != NULL) {
1502: switch (key_type_from_name(key_type_name)) {
1503: case KEY_RSA_CERT_V00:
1504: case KEY_DSA_CERT_V00:
1505: v00 = 1;
1506: break;
1507: case KEY_UNSPEC:
1508: if (strcasecmp(key_type_name, "v00") == 0) {
1509: v00 = 1;
1510: break;
1511: } else if (strcasecmp(key_type_name, "v01") == 0)
1512: break;
1513: /* FALLTHROUGH */
1514: default:
1515: fprintf(stderr, "unknown key type %s\n", key_type_name);
1516: exit(1);
1517: }
1518: }
1519:
1.197 djm 1520: pkcs11_init(1);
1521: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1522: if (pkcs11provider != NULL) {
1523: if ((ca = load_pkcs11_key(tmp)) == NULL)
1524: fatal("No PKCS#11 key matching %s found", ca_key_path);
1525: } else if ((ca = load_identity(tmp)) == NULL)
1526: fatal("Couldn't load CA key \"%s\"", tmp);
1527: xfree(tmp);
1528:
1.179 djm 1529: for (i = 0; i < argc; i++) {
1530: /* Split list of principals */
1531: n = 0;
1532: if (cert_principals != NULL) {
1533: otmp = tmp = xstrdup(cert_principals);
1534: plist = NULL;
1535: for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
1536: plist = xrealloc(plist, n + 1, sizeof(*plist));
1537: if (*(plist[n] = xstrdup(cp)) == '\0')
1538: fatal("Empty principal name");
1539: }
1540: xfree(otmp);
1541: }
1542:
1543: tmp = tilde_expand_filename(argv[i], pw->pw_uid);
1544: if ((public = key_load_public(tmp, &comment)) == NULL)
1545: fatal("%s: unable to open \"%s\"", __func__, tmp);
1.200 djm 1546: if (public->type != KEY_RSA && public->type != KEY_DSA &&
1547: public->type != KEY_ECDSA)
1.179 djm 1548: fatal("%s: key \"%s\" type %s cannot be certified",
1549: __func__, tmp, key_type(public));
1550:
1551: /* Prepare certificate to sign */
1.186 djm 1552: if (key_to_certified(public, v00) != 0)
1.179 djm 1553: fatal("Could not upgrade key %s to certificate", tmp);
1554: public->cert->type = cert_key_type;
1.186 djm 1555: public->cert->serial = (u_int64_t)cert_serial;
1.179 djm 1556: public->cert->key_id = xstrdup(cert_key_id);
1557: public->cert->nprincipals = n;
1558: public->cert->principals = plist;
1559: public->cert->valid_after = cert_valid_from;
1560: public->cert->valid_before = cert_valid_to;
1.190 djm 1561: if (v00) {
1562: prepare_options_buf(&public->cert->critical,
1563: OPTIONS_CRITICAL|OPTIONS_EXTENSIONS);
1564: } else {
1565: prepare_options_buf(&public->cert->critical,
1566: OPTIONS_CRITICAL);
1567: prepare_options_buf(&public->cert->extensions,
1568: OPTIONS_EXTENSIONS);
1569: }
1.179 djm 1570: public->cert->signature_key = key_from_private(ca);
1571:
1572: if (key_certify(public, ca) != 0)
1573: fatal("Couldn't not certify key %s", tmp);
1574:
1575: if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1576: *cp = '\0';
1577: xasprintf(&out, "%s-cert.pub", tmp);
1578: xfree(tmp);
1579:
1580: if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1581: fatal("Could not open \"%s\" for writing: %s", out,
1582: strerror(errno));
1583: if ((f = fdopen(fd, "w")) == NULL)
1584: fatal("%s: fdopen: %s", __func__, strerror(errno));
1585: if (!key_write(public, f))
1586: fatal("Could not write certified key to %s", out);
1587: fprintf(f, " %s\n", comment);
1588: fclose(f);
1589:
1.186 djm 1590: if (!quiet) {
1591: logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
1592: "valid %s", key_cert_type(public),
1.205 djm 1593: out, public->cert->key_id,
1594: (unsigned long long)public->cert->serial,
1.179 djm 1595: cert_principals != NULL ? " for " : "",
1596: cert_principals != NULL ? cert_principals : "",
1.182 djm 1597: fmt_validity(cert_valid_from, cert_valid_to));
1.186 djm 1598: }
1.179 djm 1599:
1600: key_free(public);
1601: xfree(out);
1602: }
1.197 djm 1603: pkcs11_terminate();
1.179 djm 1604: exit(0);
1605: }
1606:
1607: static u_int64_t
1608: parse_relative_time(const char *s, time_t now)
1609: {
1610: int64_t mul, secs;
1611:
1612: mul = *s == '-' ? -1 : 1;
1613:
1614: if ((secs = convtime(s + 1)) == -1)
1615: fatal("Invalid relative certificate time %s", s);
1616: if (mul == -1 && secs > now)
1617: fatal("Certificate time %s cannot be represented", s);
1618: return now + (u_int64_t)(secs * mul);
1619: }
1620:
1621: static u_int64_t
1622: parse_absolute_time(const char *s)
1623: {
1624: struct tm tm;
1625: time_t tt;
1.180 djm 1626: char buf[32], *fmt;
1.179 djm 1627:
1.180 djm 1628: /*
1629: * POSIX strptime says "The application shall ensure that there
1630: * is white-space or other non-alphanumeric characters between
1631: * any two conversion specifications" so arrange things this way.
1632: */
1633: switch (strlen(s)) {
1634: case 8:
1.184 djm 1635: fmt = "%Y-%m-%d";
1636: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2s", s, s + 4, s + 6);
1.180 djm 1637: break;
1638: case 14:
1.184 djm 1639: fmt = "%Y-%m-%dT%H:%M:%S";
1640: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s:%.2s",
1.180 djm 1641: s, s + 4, s + 6, s + 8, s + 10, s + 12);
1642: break;
1643: default:
1.179 djm 1644: fatal("Invalid certificate time format %s", s);
1.180 djm 1645: }
1.179 djm 1646:
1647: bzero(&tm, sizeof(tm));
1.180 djm 1648: if (strptime(buf, fmt, &tm) == NULL)
1.179 djm 1649: fatal("Invalid certificate time %s", s);
1650: if ((tt = mktime(&tm)) < 0)
1651: fatal("Certificate time %s cannot be represented", s);
1652: return (u_int64_t)tt;
1653: }
1654:
1655: static void
1656: parse_cert_times(char *timespec)
1657: {
1658: char *from, *to;
1659: time_t now = time(NULL);
1660: int64_t secs;
1661:
1662: /* +timespec relative to now */
1663: if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1664: if ((secs = convtime(timespec + 1)) == -1)
1665: fatal("Invalid relative certificate life %s", timespec);
1666: cert_valid_to = now + secs;
1667: /*
1668: * Backdate certificate one minute to avoid problems on hosts
1669: * with poorly-synchronised clocks.
1670: */
1671: cert_valid_from = ((now - 59)/ 60) * 60;
1672: return;
1673: }
1674:
1675: /*
1676: * from:to, where
1677: * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1678: * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1679: */
1680: from = xstrdup(timespec);
1681: to = strchr(from, ':');
1682: if (to == NULL || from == to || *(to + 1) == '\0')
1.181 djm 1683: fatal("Invalid certificate life specification %s", timespec);
1.179 djm 1684: *to++ = '\0';
1685:
1686: if (*from == '-' || *from == '+')
1687: cert_valid_from = parse_relative_time(from, now);
1688: else
1689: cert_valid_from = parse_absolute_time(from);
1690:
1691: if (*to == '-' || *to == '+')
1692: cert_valid_to = parse_relative_time(to, cert_valid_from);
1693: else
1694: cert_valid_to = parse_absolute_time(to);
1695:
1696: if (cert_valid_to <= cert_valid_from)
1697: fatal("Empty certificate validity interval");
1698: xfree(from);
1699: }
1700:
1701: static void
1.186 djm 1702: add_cert_option(char *opt)
1.179 djm 1703: {
1704: char *val;
1705:
1.208 stevesk 1706: if (strcasecmp(opt, "clear") == 0)
1.190 djm 1707: certflags_flags = 0;
1.179 djm 1708: else if (strcasecmp(opt, "no-x11-forwarding") == 0)
1.190 djm 1709: certflags_flags &= ~CERTOPT_X_FWD;
1.179 djm 1710: else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
1.190 djm 1711: certflags_flags |= CERTOPT_X_FWD;
1.179 djm 1712: else if (strcasecmp(opt, "no-agent-forwarding") == 0)
1.190 djm 1713: certflags_flags &= ~CERTOPT_AGENT_FWD;
1.179 djm 1714: else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
1.190 djm 1715: certflags_flags |= CERTOPT_AGENT_FWD;
1.179 djm 1716: else if (strcasecmp(opt, "no-port-forwarding") == 0)
1.190 djm 1717: certflags_flags &= ~CERTOPT_PORT_FWD;
1.179 djm 1718: else if (strcasecmp(opt, "permit-port-forwarding") == 0)
1.190 djm 1719: certflags_flags |= CERTOPT_PORT_FWD;
1.179 djm 1720: else if (strcasecmp(opt, "no-pty") == 0)
1.190 djm 1721: certflags_flags &= ~CERTOPT_PTY;
1.179 djm 1722: else if (strcasecmp(opt, "permit-pty") == 0)
1.190 djm 1723: certflags_flags |= CERTOPT_PTY;
1.179 djm 1724: else if (strcasecmp(opt, "no-user-rc") == 0)
1.190 djm 1725: certflags_flags &= ~CERTOPT_USER_RC;
1.179 djm 1726: else if (strcasecmp(opt, "permit-user-rc") == 0)
1.190 djm 1727: certflags_flags |= CERTOPT_USER_RC;
1.179 djm 1728: else if (strncasecmp(opt, "force-command=", 14) == 0) {
1729: val = opt + 14;
1730: if (*val == '\0')
1.186 djm 1731: fatal("Empty force-command option");
1.190 djm 1732: if (certflags_command != NULL)
1.179 djm 1733: fatal("force-command already specified");
1.190 djm 1734: certflags_command = xstrdup(val);
1.179 djm 1735: } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1736: val = opt + 15;
1737: if (*val == '\0')
1.186 djm 1738: fatal("Empty source-address option");
1.190 djm 1739: if (certflags_src_addr != NULL)
1.179 djm 1740: fatal("source-address already specified");
1741: if (addr_match_cidr_list(NULL, val) != 0)
1742: fatal("Invalid source-address list");
1.190 djm 1743: certflags_src_addr = xstrdup(val);
1.179 djm 1744: } else
1.186 djm 1745: fatal("Unsupported certificate option \"%s\"", opt);
1.179 djm 1746: }
1747:
1.63 itojun 1748: static void
1.192 djm 1749: show_options(const Buffer *optbuf, int v00, int in_critical)
1750: {
1751: u_char *name, *data;
1752: u_int dlen;
1753: Buffer options, option;
1754:
1755: buffer_init(&options);
1756: buffer_append(&options, buffer_ptr(optbuf), buffer_len(optbuf));
1757:
1758: buffer_init(&option);
1759: while (buffer_len(&options) != 0) {
1760: name = buffer_get_string(&options, NULL);
1761: data = buffer_get_string_ptr(&options, &dlen);
1762: buffer_append(&option, data, dlen);
1763: printf(" %s", name);
1764: if ((v00 || !in_critical) &&
1765: (strcmp(name, "permit-X11-forwarding") == 0 ||
1766: strcmp(name, "permit-agent-forwarding") == 0 ||
1767: strcmp(name, "permit-port-forwarding") == 0 ||
1768: strcmp(name, "permit-pty") == 0 ||
1769: strcmp(name, "permit-user-rc") == 0))
1770: printf("\n");
1771: else if ((v00 || in_critical) &&
1772: (strcmp(name, "force-command") == 0 ||
1773: strcmp(name, "source-address") == 0)) {
1774: data = buffer_get_string(&option, NULL);
1775: printf(" %s\n", data);
1776: xfree(data);
1777: } else {
1778: printf(" UNKNOWN OPTION (len %u)\n",
1779: buffer_len(&option));
1780: buffer_clear(&option);
1781: }
1782: xfree(name);
1783: if (buffer_len(&option) != 0)
1784: fatal("Option corrupt: extra data at end");
1785: }
1786: buffer_free(&option);
1787: buffer_free(&options);
1788: }
1789:
1790: static void
1.182 djm 1791: do_show_cert(struct passwd *pw)
1792: {
1793: Key *key;
1794: struct stat st;
1795: char *key_fp, *ca_fp;
1.192 djm 1796: u_int i, v00;
1.182 djm 1797:
1798: if (!have_identity)
1799: ask_filename(pw, "Enter file in which the key is");
1.191 djm 1800: if (stat(identity_file, &st) < 0)
1801: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.182 djm 1802: if ((key = key_load_public(identity_file, NULL)) == NULL)
1803: fatal("%s is not a public key", identity_file);
1804: if (!key_is_cert(key))
1805: fatal("%s is not a certificate", identity_file);
1.186 djm 1806: v00 = key->type == KEY_RSA_CERT_V00 || key->type == KEY_DSA_CERT_V00;
1807:
1.182 djm 1808: key_fp = key_fingerprint(key, SSH_FP_MD5, SSH_FP_HEX);
1809: ca_fp = key_fingerprint(key->cert->signature_key,
1810: SSH_FP_MD5, SSH_FP_HEX);
1811:
1812: printf("%s:\n", identity_file);
1.186 djm 1813: printf(" Type: %s %s certificate\n", key_ssh_name(key),
1814: key_cert_type(key));
1815: printf(" Public key: %s %s\n", key_type(key), key_fp);
1816: printf(" Signing CA: %s %s\n",
1.182 djm 1817: key_type(key->cert->signature_key), ca_fp);
1.186 djm 1818: printf(" Key ID: \"%s\"\n", key->cert->key_id);
1.205 djm 1819: if (!v00) {
1820: printf(" Serial: %llu\n",
1821: (unsigned long long)key->cert->serial);
1822: }
1.182 djm 1823: printf(" Valid: %s\n",
1824: fmt_validity(key->cert->valid_after, key->cert->valid_before));
1825: printf(" Principals: ");
1826: if (key->cert->nprincipals == 0)
1827: printf("(none)\n");
1828: else {
1829: for (i = 0; i < key->cert->nprincipals; i++)
1830: printf("\n %s",
1831: key->cert->principals[i]);
1832: printf("\n");
1833: }
1.186 djm 1834: printf(" Critical Options: ");
1835: if (buffer_len(&key->cert->critical) == 0)
1.182 djm 1836: printf("(none)\n");
1837: else {
1838: printf("\n");
1.192 djm 1839: show_options(&key->cert->critical, v00, 1);
1.186 djm 1840: }
1841: if (!v00) {
1842: printf(" Extensions: ");
1843: if (buffer_len(&key->cert->extensions) == 0)
1844: printf("(none)\n");
1845: else {
1846: printf("\n");
1.192 djm 1847: show_options(&key->cert->extensions, v00, 0);
1.182 djm 1848: }
1849: }
1850: exit(0);
1851: }
1852:
1853: static void
1.10 markus 1854: usage(void)
1855: {
1.161 sobrado 1856: fprintf(stderr, "usage: %s [options]\n", __progname);
1.77 jakob 1857: fprintf(stderr, "Options:\n");
1.206 stevesk 1858: fprintf(stderr, " -A Generate non-existent host keys for all key types.\n");
1.123 otto 1859: fprintf(stderr, " -a trials Number of trials for screening DH-GEX moduli.\n");
1860: fprintf(stderr, " -B Show bubblebabble digest of key file.\n");
1.77 jakob 1861: fprintf(stderr, " -b bits Number of bits in the key to create.\n");
1.123 otto 1862: fprintf(stderr, " -C comment Provide new comment.\n");
1.77 jakob 1863: fprintf(stderr, " -c Change comment in private and public key files.\n");
1.177 markus 1864: #ifdef ENABLE_PKCS11
1865: fprintf(stderr, " -D pkcs11 Download public key from pkcs11 token.\n");
1866: #endif
1.193 djm 1867: fprintf(stderr, " -e Export OpenSSH to foreign format key file.\n");
1.123 otto 1868: fprintf(stderr, " -F hostname Find hostname in known hosts file.\n");
1.77 jakob 1869: fprintf(stderr, " -f filename Filename of the key file.\n");
1.123 otto 1870: fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n");
1.105 jakob 1871: fprintf(stderr, " -g Use generic DNS resource record format.\n");
1.123 otto 1872: fprintf(stderr, " -H Hash names in known_hosts file.\n");
1.179 djm 1873: fprintf(stderr, " -h Generate host certificate instead of a user certificate.\n");
1874: fprintf(stderr, " -I key_id Key identifier to include in certificate.\n");
1.193 djm 1875: fprintf(stderr, " -i Import foreign format to OpenSSH key file.\n");
1.212 jmc 1876: fprintf(stderr, " -K checkpt Write checkpoints to this file.\n");
1.182 djm 1877: fprintf(stderr, " -L Print the contents of a certificate.\n");
1.77 jakob 1878: fprintf(stderr, " -l Show fingerprint of key file.\n");
1.194 jmc 1879: fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n");
1.193 djm 1880: fprintf(stderr, " -m key_fmt Conversion format for -e/-i (PEM|PKCS8|RFC4716).\n");
1.194 jmc 1881: fprintf(stderr, " -N phrase Provide new passphrase.\n");
1.179 djm 1882: fprintf(stderr, " -n name,... User/host principal names to include in certificate\n");
1.187 jmc 1883: fprintf(stderr, " -O option Specify a certificate option.\n");
1.123 otto 1884: fprintf(stderr, " -P phrase Provide old passphrase.\n");
1.77 jakob 1885: fprintf(stderr, " -p Change passphrase of private key file.\n");
1886: fprintf(stderr, " -q Quiet.\n");
1.123 otto 1887: fprintf(stderr, " -R hostname Remove host from known_hosts file.\n");
1888: fprintf(stderr, " -r hostname Print DNS resource record.\n");
1.194 jmc 1889: fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n");
1.179 djm 1890: fprintf(stderr, " -s ca_key Certify keys with CA key.\n");
1.123 otto 1891: fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n");
1.77 jakob 1892: fprintf(stderr, " -t type Specify type of key to create.\n");
1.179 djm 1893: fprintf(stderr, " -V from:to Specify certificate validity interval.\n");
1.123 otto 1894: fprintf(stderr, " -v Verbose.\n");
1895: fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n");
1896: fprintf(stderr, " -y Read private key file and print public key.\n");
1.187 jmc 1897: fprintf(stderr, " -z serial Specify a serial number.\n");
1.107 djm 1898:
1.12 markus 1899: exit(1);
1.10 markus 1900: }
1901:
1.13 deraadt 1902: /*
1903: * Main program for key management.
1904: */
1.2 provos 1905: int
1.156 deraadt 1906: main(int argc, char **argv)
1.1 deraadt 1907: {
1.87 djm 1908: char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
1.211 dtucker 1909: char *checkpoint = NULL;
1.197 djm 1910: char out_file[MAXPATHLEN], *rr_hostname = NULL;
1.46 deraadt 1911: Key *private, *public;
1.12 markus 1912: struct passwd *pw;
1913: struct stat st;
1.177 markus 1914: int opt, type, fd;
1.126 dtucker 1915: u_int32_t memory = 0, generator_wanted = 0, trials = 100;
1.107 djm 1916: int do_gen_candidates = 0, do_screen_candidates = 0;
1.206 stevesk 1917: int gen_all_hostkeys = 0;
1.107 djm 1918: BIGNUM *start = NULL;
1.12 markus 1919: FILE *f;
1.125 avsm 1920: const char *errstr;
1.33 markus 1921:
1.12 markus 1922: extern int optind;
1923: extern char *optarg;
1.129 djm 1924:
1925: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
1926: sanitise_stdfd();
1.12 markus 1927:
1.201 djm 1928: OpenSSL_add_all_algorithms();
1.156 deraadt 1929: log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1.19 markus 1930:
1.14 markus 1931: /* we need this for the home * directory. */
1.12 markus 1932: pw = getpwuid(getuid());
1933: if (!pw) {
1934: printf("You don't exist, go away!\n");
1935: exit(1);
1936: }
1.19 markus 1937: if (gethostname(hostname, sizeof(hostname)) < 0) {
1938: perror("gethostname");
1939: exit(1);
1940: }
1.14 markus 1941:
1.211 dtucker 1942: while ((opt = getopt(argc, argv, "AegiqpclBHLhvxXyF:b:f:t:D:I:K:P:m:N:n:"
1.186 djm 1943: "O:C:r:g:R:T:G:M:S:s:a:V:W:z:")) != -1) {
1.12 markus 1944: switch (opt) {
1.206 stevesk 1945: case 'A':
1946: gen_all_hostkeys = 1;
1947: break;
1.12 markus 1948: case 'b':
1.202 markus 1949: bits = (u_int32_t)strtonum(optarg, 256, 32768, &errstr);
1.125 avsm 1950: if (errstr)
1951: fatal("Bits has bad value %s (%s)",
1952: optarg, errstr);
1.12 markus 1953: break;
1.119 djm 1954: case 'F':
1955: find_host = 1;
1956: rr_hostname = optarg;
1957: break;
1958: case 'H':
1959: hash_hosts = 1;
1960: break;
1.179 djm 1961: case 'I':
1962: cert_key_id = optarg;
1963: break;
1.119 djm 1964: case 'R':
1965: delete_host = 1;
1966: rr_hostname = optarg;
1967: break;
1.182 djm 1968: case 'L':
1969: show_cert = 1;
1970: break;
1.12 markus 1971: case 'l':
1972: print_fingerprint = 1;
1973: break;
1.49 markus 1974: case 'B':
1975: print_bubblebabble = 1;
1976: break;
1.193 djm 1977: case 'm':
1978: if (strcasecmp(optarg, "RFC4716") == 0 ||
1979: strcasecmp(optarg, "ssh2") == 0) {
1980: convert_format = FMT_RFC4716;
1981: break;
1982: }
1983: if (strcasecmp(optarg, "PKCS8") == 0) {
1984: convert_format = FMT_PKCS8;
1985: break;
1986: }
1987: if (strcasecmp(optarg, "PEM") == 0) {
1988: convert_format = FMT_PEM;
1989: break;
1990: }
1991: fatal("Unsupported conversion format \"%s\"", optarg);
1.179 djm 1992: case 'n':
1993: cert_principals = optarg;
1994: break;
1.12 markus 1995: case 'p':
1996: change_passphrase = 1;
1997: break;
1998: case 'c':
1999: change_comment = 1;
2000: break;
2001: case 'f':
1.124 avsm 2002: if (strlcpy(identity_file, optarg, sizeof(identity_file)) >=
2003: sizeof(identity_file))
2004: fatal("Identity filename too long");
1.12 markus 2005: have_identity = 1;
2006: break;
1.105 jakob 2007: case 'g':
2008: print_generic = 1;
2009: break;
1.12 markus 2010: case 'P':
2011: identity_passphrase = optarg;
2012: break;
2013: case 'N':
2014: identity_new_passphrase = optarg;
2015: break;
1.179 djm 2016: case 'O':
1.186 djm 2017: add_cert_option(optarg);
1.179 djm 2018: break;
1.12 markus 2019: case 'C':
2020: identity_comment = optarg;
2021: break;
2022: case 'q':
2023: quiet = 1;
1.20 deraadt 2024: break;
1.57 markus 2025: case 'e':
1.19 markus 2026: case 'x':
1.57 markus 2027: /* export key */
1.193 djm 2028: convert_to = 1;
1.19 markus 2029: break;
1.179 djm 2030: case 'h':
2031: cert_key_type = SSH2_CERT_TYPE_HOST;
1.190 djm 2032: certflags_flags = 0;
1.179 djm 2033: break;
1.57 markus 2034: case 'i':
1.19 markus 2035: case 'X':
1.57 markus 2036: /* import key */
1.193 djm 2037: convert_from = 1;
1.19 markus 2038: break;
2039: case 'y':
2040: print_public = 1;
2041: break;
1.179 djm 2042: case 's':
2043: ca_key_path = optarg;
2044: break;
1.33 markus 2045: case 't':
2046: key_type_name = optarg;
2047: break;
1.75 markus 2048: case 'D':
1.177 markus 2049: pkcs11provider = optarg;
1.66 markus 2050: break;
1.113 djm 2051: case 'v':
2052: if (log_level == SYSLOG_LEVEL_INFO)
2053: log_level = SYSLOG_LEVEL_DEBUG1;
2054: else {
1.117 deraadt 2055: if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
1.113 djm 2056: log_level < SYSLOG_LEVEL_DEBUG3)
2057: log_level++;
2058: }
2059: break;
1.105 jakob 2060: case 'r':
1.119 djm 2061: rr_hostname = optarg;
1.105 jakob 2062: break;
1.107 djm 2063: case 'W':
1.142 deraadt 2064: generator_wanted = (u_int32_t)strtonum(optarg, 1,
2065: UINT_MAX, &errstr);
1.124 avsm 2066: if (errstr)
2067: fatal("Desired generator has bad value: %s (%s)",
2068: optarg, errstr);
1.107 djm 2069: break;
2070: case 'a':
1.142 deraadt 2071: trials = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1.124 avsm 2072: if (errstr)
2073: fatal("Invalid number of trials: %s (%s)",
2074: optarg, errstr);
1.107 djm 2075: break;
2076: case 'M':
1.142 deraadt 2077: memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1.186 djm 2078: if (errstr)
1.124 avsm 2079: fatal("Memory limit is %s: %s", errstr, optarg);
1.107 djm 2080: break;
2081: case 'G':
2082: do_gen_candidates = 1;
1.124 avsm 2083: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2084: sizeof(out_file))
2085: fatal("Output filename too long");
1.107 djm 2086: break;
2087: case 'T':
2088: do_screen_candidates = 1;
1.124 avsm 2089: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2090: sizeof(out_file))
2091: fatal("Output filename too long");
1.107 djm 2092: break;
1.211 dtucker 2093: case 'K':
2094: if (strlen(optarg) >= MAXPATHLEN)
2095: fatal("Checkpoint filename too long");
2096: checkpoint = xstrdup(optarg);
2097: break;
1.107 djm 2098: case 'S':
2099: /* XXX - also compare length against bits */
2100: if (BN_hex2bn(&start, optarg) == 0)
2101: fatal("Invalid start point.");
2102: break;
1.179 djm 2103: case 'V':
2104: parse_cert_times(optarg);
1.186 djm 2105: break;
2106: case 'z':
2107: cert_serial = strtonum(optarg, 0, LLONG_MAX, &errstr);
2108: if (errstr)
2109: fatal("Invalid serial number: %s", errstr);
1.179 djm 2110: break;
1.12 markus 2111: case '?':
2112: default:
2113: usage();
2114: }
2115: }
1.113 djm 2116:
2117: /* reinit */
1.156 deraadt 2118: log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
1.113 djm 2119:
1.179 djm 2120: argv += optind;
2121: argc -= optind;
2122:
2123: if (ca_key_path != NULL) {
2124: if (argc < 1) {
2125: printf("Too few arguments.\n");
2126: usage();
2127: }
2128: } else if (argc > 0) {
1.12 markus 2129: printf("Too many arguments.\n");
1.87 djm 2130: usage();
2131: }
1.12 markus 2132: if (change_passphrase && change_comment) {
2133: printf("Can only have one of -p and -c.\n");
1.166 djm 2134: usage();
2135: }
2136: if (print_fingerprint && (delete_host || hash_hosts)) {
2137: printf("Cannot use -l with -D or -R.\n");
1.12 markus 2138: usage();
1.179 djm 2139: }
2140: if (ca_key_path != NULL) {
2141: if (cert_key_id == NULL)
2142: fatal("Must specify key id (-I) when certifying");
2143: do_ca_sign(pw, argc, argv);
1.12 markus 2144: }
1.182 djm 2145: if (show_cert)
2146: do_show_cert(pw);
1.119 djm 2147: if (delete_host || hash_hosts || find_host)
2148: do_known_hosts(pw, rr_hostname);
1.49 markus 2149: if (print_fingerprint || print_bubblebabble)
1.12 markus 2150: do_fingerprint(pw);
2151: if (change_passphrase)
2152: do_change_passphrase(pw);
2153: if (change_comment)
2154: do_change_comment(pw);
1.193 djm 2155: if (convert_to)
2156: do_convert_to(pw);
2157: if (convert_from)
2158: do_convert_from(pw);
1.19 markus 2159: if (print_public)
2160: do_print_public(pw);
1.119 djm 2161: if (rr_hostname != NULL) {
1.138 jakob 2162: unsigned int n = 0;
2163:
2164: if (have_identity) {
2165: n = do_print_resource_record(pw,
2166: identity_file, rr_hostname);
2167: if (n == 0) {
2168: perror(identity_file);
2169: exit(1);
2170: }
2171: exit(0);
2172: } else {
2173:
2174: n += do_print_resource_record(pw,
2175: _PATH_HOST_RSA_KEY_FILE, rr_hostname);
2176: n += do_print_resource_record(pw,
2177: _PATH_HOST_DSA_KEY_FILE, rr_hostname);
2178:
2179: if (n == 0)
2180: fatal("no keys found.");
2181: exit(0);
2182: }
1.105 jakob 2183: }
1.177 markus 2184: if (pkcs11provider != NULL)
1.197 djm 2185: do_download(pw);
1.107 djm 2186:
2187: if (do_gen_candidates) {
2188: FILE *out = fopen(out_file, "w");
1.111 djm 2189:
1.107 djm 2190: if (out == NULL) {
2191: error("Couldn't open modulus candidate file \"%s\": %s",
2192: out_file, strerror(errno));
2193: return (1);
2194: }
1.130 markus 2195: if (bits == 0)
2196: bits = DEFAULT_BITS;
1.107 djm 2197: if (gen_candidates(out, memory, bits, start) != 0)
1.131 stevesk 2198: fatal("modulus candidate generation failed");
1.107 djm 2199:
2200: return (0);
2201: }
2202:
2203: if (do_screen_candidates) {
2204: FILE *in;
2205: FILE *out = fopen(out_file, "w");
2206:
2207: if (have_identity && strcmp(identity_file, "-") != 0) {
2208: if ((in = fopen(identity_file, "r")) == NULL) {
2209: fatal("Couldn't open modulus candidate "
1.111 djm 2210: "file \"%s\": %s", identity_file,
1.107 djm 2211: strerror(errno));
2212: }
2213: } else
2214: in = stdin;
2215:
2216: if (out == NULL) {
2217: fatal("Couldn't open moduli file \"%s\": %s",
2218: out_file, strerror(errno));
2219: }
1.211 dtucker 2220: if (prime_test(in, out, trials, generator_wanted, checkpoint)
2221: != 0)
1.131 stevesk 2222: fatal("modulus screening failed");
1.108 markus 2223: return (0);
1.75 markus 2224: }
1.12 markus 2225:
1.206 stevesk 2226: if (gen_all_hostkeys) {
2227: do_gen_all_hostkeys(pw);
2228: return (0);
2229: }
2230:
1.12 markus 2231: arc4random_stir();
2232:
1.133 djm 2233: if (key_type_name == NULL)
2234: key_type_name = "rsa";
2235:
1.35 markus 2236: type = key_type_from_name(key_type_name);
1.206 stevesk 2237: type_bits_valid(type, &bits);
2238:
1.33 markus 2239: if (!quiet)
1.35 markus 2240: printf("Generating public/private %s key pair.\n", key_type_name);
1.33 markus 2241: private = key_generate(type, bits);
2242: if (private == NULL) {
1.173 tobias 2243: fprintf(stderr, "key_generate failed\n");
1.33 markus 2244: exit(1);
2245: }
2246: public = key_from_private(private);
1.12 markus 2247:
2248: if (!have_identity)
2249: ask_filename(pw, "Enter file in which to save the key");
2250:
1.132 djm 2251: /* Create ~/.ssh directory if it doesn't already exist. */
1.188 djm 2252: snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
2253: pw->pw_dir, _PATH_SSH_USER_DIR);
2254: if (strstr(identity_file, dotsshdir) != NULL) {
2255: if (stat(dotsshdir, &st) < 0) {
2256: if (errno != ENOENT) {
2257: error("Could not stat %s: %s", dotsshdir,
2258: strerror(errno));
2259: } else if (mkdir(dotsshdir, 0700) < 0) {
2260: error("Could not create directory '%s': %s",
2261: dotsshdir, strerror(errno));
2262: } else if (!quiet)
2263: printf("Created directory '%s'.\n", dotsshdir);
2264: }
1.12 markus 2265: }
2266: /* If the file already exists, ask the user to confirm. */
2267: if (stat(identity_file, &st) >= 0) {
2268: char yesno[3];
2269: printf("%s already exists.\n", identity_file);
2270: printf("Overwrite (y/n)? ");
2271: fflush(stdout);
2272: if (fgets(yesno, sizeof(yesno), stdin) == NULL)
2273: exit(1);
2274: if (yesno[0] != 'y' && yesno[0] != 'Y')
2275: exit(1);
2276: }
2277: /* Ask for a passphrase (twice). */
2278: if (identity_passphrase)
2279: passphrase1 = xstrdup(identity_passphrase);
2280: else if (identity_new_passphrase)
2281: passphrase1 = xstrdup(identity_new_passphrase);
2282: else {
2283: passphrase_again:
2284: passphrase1 =
1.65 markus 2285: read_passphrase("Enter passphrase (empty for no "
2286: "passphrase): ", RP_ALLOW_STDIN);
2287: passphrase2 = read_passphrase("Enter same passphrase again: ",
2288: RP_ALLOW_STDIN);
1.12 markus 2289: if (strcmp(passphrase1, passphrase2) != 0) {
1.65 markus 2290: /*
2291: * The passphrases do not match. Clear them and
2292: * retry.
2293: */
1.12 markus 2294: memset(passphrase1, 0, strlen(passphrase1));
2295: memset(passphrase2, 0, strlen(passphrase2));
2296: xfree(passphrase1);
2297: xfree(passphrase2);
2298: printf("Passphrases do not match. Try again.\n");
2299: goto passphrase_again;
2300: }
2301: /* Clear the other copy of the passphrase. */
2302: memset(passphrase2, 0, strlen(passphrase2));
2303: xfree(passphrase2);
2304: }
2305:
2306: if (identity_comment) {
2307: strlcpy(comment, identity_comment, sizeof(comment));
2308: } else {
1.172 stevesk 2309: /* Create default comment field for the passphrase. */
1.12 markus 2310: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
2311: }
2312:
2313: /* Save the key with the given passphrase and comment. */
1.52 markus 2314: if (!key_save_private(private, identity_file, passphrase1, comment)) {
1.56 markus 2315: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 2316: memset(passphrase1, 0, strlen(passphrase1));
2317: xfree(passphrase1);
2318: exit(1);
2319: }
2320: /* Clear the passphrase. */
2321: memset(passphrase1, 0, strlen(passphrase1));
2322: xfree(passphrase1);
2323:
2324: /* Clear the private key and the random number generator. */
1.33 markus 2325: key_free(private);
1.12 markus 2326: arc4random_stir();
2327:
2328: if (!quiet)
2329: printf("Your identification has been saved in %s.\n", identity_file);
2330:
2331: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 2332: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
2333: if (fd == -1) {
1.12 markus 2334: printf("Could not save your public key in %s\n", identity_file);
1.46 deraadt 2335: exit(1);
2336: }
2337: f = fdopen(fd, "w");
2338: if (f == NULL) {
1.173 tobias 2339: printf("fdopen %s failed\n", identity_file);
1.12 markus 2340: exit(1);
2341: }
1.19 markus 2342: if (!key_write(public, f))
1.173 tobias 2343: fprintf(stderr, "write key failed\n");
1.19 markus 2344: fprintf(f, " %s\n", comment);
1.12 markus 2345: fclose(f);
2346:
2347: if (!quiet) {
1.50 markus 2348: char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX);
1.167 grunk 2349: char *ra = key_fingerprint(public, SSH_FP_MD5,
2350: SSH_FP_RANDOMART);
1.19 markus 2351: printf("Your public key has been saved in %s.\n",
2352: identity_file);
1.12 markus 2353: printf("The key fingerprint is:\n");
1.50 markus 2354: printf("%s %s\n", fp, comment);
1.167 grunk 2355: printf("The key's randomart image is:\n");
2356: printf("%s\n", ra);
2357: xfree(ra);
1.50 markus 2358: xfree(fp);
1.12 markus 2359: }
1.19 markus 2360:
2361: key_free(public);
1.12 markus 2362: exit(0);
1.1 deraadt 2363: }
![[BACK]](/icons/back.gif){kind=icon}
Return to ssh-keygen.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh