]> andersk Git - openssh.git/blobdiff - ssh-keygen.c
- markus@cvs.openbsd.org 2004/12/23 17:38:07
[openssh.git] / ssh-keygen.c
index b3074e8def92f25ec79d31f2eea6dbbf30d8754a..7ed62a30c5d81aea2f6910d3d73ffc8d81edf2c4 100644 (file)
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: ssh-keygen.c,v 1.52 2001/03/26 08:07:09 markus Exp $");
+RCSID("$OpenBSD: ssh-keygen.c,v 1.118 2004/12/23 17:38:07 markus Exp $");
 
 #include <openssl/evp.h>
 #include <openssl/pem.h>
 
 #include "xmalloc.h"
 #include "key.h"
+#include "rsa.h"
 #include "authfile.h"
 #include "uuencode.h"
 #include "buffer.h"
 #include "bufaux.h"
 #include "pathnames.h"
 #include "log.h"
-#include "readpass.h"
+#include "misc.h"
+
+#ifdef SMARTCARD
+#include "scard.h"
+#endif
+#include "dns.h"
 
 /* Number of bits in the RSA/DSA key.  This value can be changed on the command line. */
 int bits = 1024;
@@ -65,43 +71,46 @@ char *identity_comment = NULL;
 int convert_to_ssh2 = 0;
 int convert_from_ssh2 = 0;
 int print_public = 0;
+int print_generic = 0;
 
-/* default to RSA for SSH-1 */
-char *key_type_name = "rsa1";
+char *key_type_name = NULL;
 
 /* argv0 */
-#ifdef HAVE___PROGNAME
 extern char *__progname;
-#else
-char *__progname;
-#endif
 
 char hostname[MAXHOSTNAMELEN];
 
-void
+/* moduli.c */
+int gen_candidates(FILE *, int, int, BIGNUM *);
+int prime_test(FILE *, FILE *, u_int32_t, u_int32_t);
+
+static void
 ask_filename(struct passwd *pw, const char *prompt)
 {
        char buf[1024];
        char *name = NULL;
 
-       switch (key_type_from_name(key_type_name)) {
-       case KEY_RSA1:
-               name = _PATH_SSH_CLIENT_IDENTITY;
-               break;
-       case KEY_DSA:
-               name = _PATH_SSH_CLIENT_ID_DSA;
-               break;
-       case KEY_RSA:
+       if (key_type_name == NULL)
                name = _PATH_SSH_CLIENT_ID_RSA;
-               break;
-       default:
-               fprintf(stderr, "bad key type");
-               exit(1);
-               break;
-       }
+       else
+               switch (key_type_from_name(key_type_name)) {
+               case KEY_RSA1:
+                       name = _PATH_SSH_CLIENT_IDENTITY;
+                       break;
+               case KEY_DSA:
+                       name = _PATH_SSH_CLIENT_ID_DSA;
+                       break;
+               case KEY_RSA:
+                       name = _PATH_SSH_CLIENT_ID_RSA;
+                       break;
+               default:
+                       fprintf(stderr, "bad key type");
+                       exit(1);
+                       break;
+               }
+
        snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
        fprintf(stderr, "%s (%s): ", prompt, identity_file);
-       fflush(stderr);
        if (fgets(buf, sizeof(buf), stdin) == NULL)
                exit(1);
        if (strchr(buf, '\n'))
@@ -111,15 +120,19 @@ ask_filename(struct passwd *pw, const char *prompt)
        have_identity = 1;
 }
 
-Key *
-try_load_pem_key(char *filename)
+static Key *
+load_identity(char *filename)
 {
        char *pass;
        Key *prv;
 
-       prv = key_load_private(filename, "", NULL);
+       prv = key_load_private(filename, "", NULL);
        if (prv == NULL) {
-               pass = read_passphrase("Enter passphrase: ", 1);
+               if (identity_passphrase)
+                       pass = xstrdup(identity_passphrase);
+               else
+                       pass = read_passphrase("Enter passphrase: ",
+                           RP_ALLOW_STDIN);
                prv = key_load_private(filename, pass, NULL);
                memset(pass, 0, strlen(pass));
                xfree(pass);
@@ -128,15 +141,15 @@ try_load_pem_key(char *filename)
 }
 
 #define SSH_COM_PUBLIC_BEGIN           "---- BEGIN SSH2 PUBLIC KEY ----"
-#define SSH_COM_PUBLIC_END             "---- END SSH2 PUBLIC KEY ----"
+#define SSH_COM_PUBLIC_END             "---- END SSH2 PUBLIC KEY ----"
 #define SSH_COM_PRIVATE_BEGIN          "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
 #define        SSH_COM_PRIVATE_KEY_MAGIC       0x3f6ff9eb
 
-void
+static void
 do_convert_to_ssh2(struct passwd *pw)
 {
-       Key *prv;
-       int len;
+       Key *k;
+       u_int len;
        u_char *blob;
        struct stat st;
 
@@ -146,43 +159,55 @@ do_convert_to_ssh2(struct passwd *pw)
                perror(identity_file);
                exit(1);
        }
-       prv = try_load_pem_key(identity_file);
-       if (prv == NULL) {
-               fprintf(stderr, "load failed\n");
+       if ((k = key_load_public(identity_file, NULL)) == NULL) {
+               if ((k = load_identity(identity_file)) == NULL) {
+                       fprintf(stderr, "load failed\n");
+                       exit(1);
+               }
+       }
+       if (k->type == KEY_RSA1) {
+               fprintf(stderr, "version 1 keys are not supported\n");
+               exit(1);
+       }
+       if (key_to_blob(k, &blob, &len) <= 0) {
+               fprintf(stderr, "key_to_blob failed\n");
                exit(1);
        }
-       key_to_blob(prv, &blob, &len);
        fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
        fprintf(stdout,
-           "Comment: \"%d-bit %s, converted from OpenSSH by %s@%s\"\n",
-           key_size(prv), key_type(prv),
+           "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n",
+           key_size(k), key_type(k),
            pw->pw_name, hostname);
        dump_base64(stdout, blob, len);
        fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
-       key_free(prv);
+       key_free(k);
        xfree(blob);
        exit(0);
 }
 
-void
+static void
 buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
 {
-       int bits = buffer_get_int(b);
-       int bytes = (bits + 7) / 8;
+       u_int bignum_bits = buffer_get_int(b);
+       u_int bytes = (bignum_bits + 7) / 8;
+
        if (buffer_len(b) < bytes)
-               fatal("buffer_get_bignum_bits: input buffer too small");
-       BN_bin2bn((u_char *)buffer_ptr(b), bytes, value);
+               fatal("buffer_get_bignum_bits: input buffer too small: "
+                   "need %d have %d", bytes, buffer_len(b));
+       BN_bin2bn(buffer_ptr(b), bytes, value);
        buffer_consume(b, bytes);
 }
 
-Key *
-do_convert_private_ssh2_from_blob(char *blob, int blen)
+static Key *
+do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
 {
        Buffer b;
-       DSA *dsa;
        Key *key = NULL;
-       int ignore, magic, rlen;
        char *type, *cipher;
+       u_char *sig, data[] = "abcde12345";
+       int magic, rlen, ktype, i1, i2, i3, i4;
+       u_int slen;
+       u_long e;
 
        buffer_init(&b);
        buffer_append(&b, blob, blen);
@@ -193,49 +218,87 @@ do_convert_private_ssh2_from_blob(char *blob, int blen)
                buffer_free(&b);
                return NULL;
        }
-       ignore = buffer_get_int(&b);
+       i1 = buffer_get_int(&b);
        type   = buffer_get_string(&b, NULL);
        cipher = buffer_get_string(&b, NULL);
-       ignore = buffer_get_int(&b);
-       ignore = buffer_get_int(&b);
-       ignore = buffer_get_int(&b);
-       xfree(type);
-
+       i2 = buffer_get_int(&b);
+       i3 = buffer_get_int(&b);
+       i4 = buffer_get_int(&b);
+       debug("ignore (%d %d %d %d)", i1,i2,i3,i4);
        if (strcmp(cipher, "none") != 0) {
                error("unsupported cipher %s", cipher);
                xfree(cipher);
                buffer_free(&b);
+               xfree(type);
                return NULL;
        }
        xfree(cipher);
 
-       key = key_new(KEY_DSA);
-       dsa = key->dsa;
-       dsa->priv_key = BN_new();
-       if (dsa->priv_key == NULL) {
-               error("alloc priv_key failed");
-               key_free(key);
+       if (strstr(type, "dsa")) {
+               ktype = KEY_DSA;
+       } else if (strstr(type, "rsa")) {
+               ktype = KEY_RSA;
+       } else {
+               buffer_free(&b);
+               xfree(type);
                return NULL;
        }
-       buffer_get_bignum_bits(&b, dsa->p);
-       buffer_get_bignum_bits(&b, dsa->g);
-       buffer_get_bignum_bits(&b, dsa->q);
-       buffer_get_bignum_bits(&b, dsa->pub_key);
-       buffer_get_bignum_bits(&b, dsa->priv_key);
+       key = key_new_private(ktype);
+       xfree(type);
+
+       switch (key->type) {
+       case KEY_DSA:
+               buffer_get_bignum_bits(&b, key->dsa->p);
+               buffer_get_bignum_bits(&b, key->dsa->g);
+               buffer_get_bignum_bits(&b, key->dsa->q);
+               buffer_get_bignum_bits(&b, key->dsa->pub_key);
+               buffer_get_bignum_bits(&b, key->dsa->priv_key);
+               break;
+       case KEY_RSA:
+               e  = buffer_get_char(&b);
+               debug("e %lx", e);
+               if (e < 30) {
+                       e <<= 8;
+                       e += buffer_get_char(&b);
+                       debug("e %lx", e);
+                       e <<= 8;
+                       e += buffer_get_char(&b);
+                       debug("e %lx", e);
+               }
+               if (!BN_set_word(key->rsa->e, e)) {
+                       buffer_free(&b);
+                       key_free(key);
+                       return NULL;
+               }
+               buffer_get_bignum_bits(&b, key->rsa->d);
+               buffer_get_bignum_bits(&b, key->rsa->n);
+               buffer_get_bignum_bits(&b, key->rsa->iqmp);
+               buffer_get_bignum_bits(&b, key->rsa->q);
+               buffer_get_bignum_bits(&b, key->rsa->p);
+               rsa_generate_additional_parameters(key->rsa);
+               break;
+       }
        rlen = buffer_len(&b);
-       if(rlen != 0)
-               error("do_convert_private_ssh2_from_blob: remaining bytes in key blob %d", rlen);
+       if (rlen != 0)
+               error("do_convert_private_ssh2_from_blob: "
+                   "remaining bytes in key blob %d", rlen);
        buffer_free(&b);
+
+       /* try the key */
+       key_sign(key, &sig, &slen, data, sizeof(data));
+       key_verify(key, sig, slen, data, sizeof(data));
+       xfree(sig);
        return key;
 }
 
-void
+static void
 do_convert_from_ssh2(struct passwd *pw)
 {
        Key *k;
        int blen;
+       u_int len;
        char line[1024], *p;
-       char blob[8096];
+       u_char blob[8096];
        char encoded[8096];
        struct stat st;
        int escaped = 0, private = 0, ok;
@@ -264,18 +327,27 @@ do_convert_from_ssh2(struct passwd *pw)
                    strstr(line, ": ") != NULL) {
                        if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
                                private = 1;
-                       fprintf(stderr, "ignore: %s", line);
+                       if (strstr(line, " END ") != NULL) {
+                               break;
+                       }
+                       /* fprintf(stderr, "ignore: %s", line); */
                        continue;
                }
                if (escaped) {
                        escaped--;
-                       fprintf(stderr, "escaped: %s", line);
+                       /* fprintf(stderr, "escaped: %s", line); */
                        continue;
                }
                *p = '\0';
                strlcat(encoded, line, sizeof(encoded));
        }
-       blen = uudecode(encoded, (u_char *)blob, sizeof(blob));
+       len = strlen(encoded);
+       if (((len % 4) == 3) &&
+           (encoded[len-1] == '=') &&
+           (encoded[len-2] == '=') &&
+           (encoded[len-3] == '='))
+               encoded[len-3] = '\0';
+       blen = uudecode(encoded, blob, sizeof(blob));
        if (blen < 0) {
                fprintf(stderr, "uudecode failed.\n");
                exit(1);
@@ -288,19 +360,22 @@ do_convert_from_ssh2(struct passwd *pw)
                exit(1);
        }
        ok = private ?
-           PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) :
+           (k->type == KEY_DSA ?
+                PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) :
+                PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) :
            key_write(k, stdout);
        if (!ok) {
                fprintf(stderr, "key write failed");
                exit(1);
        }
        key_free(k);
-       fprintf(stdout, "\n");
+       if (!private)
+               fprintf(stdout, "\n");
        fclose(fp);
        exit(0);
 }
 
-void
+static void
 do_print_public(struct passwd *pw)
 {
        Key *prv;
@@ -312,7 +387,7 @@ do_print_public(struct passwd *pw)
                perror(identity_file);
                exit(1);
        }
-       prv = try_load_pem_key(identity_file);
+       prv = load_identity(identity_file);
        if (prv == NULL) {
                fprintf(stderr, "load failed\n");
                exit(1);
@@ -324,13 +399,61 @@ do_print_public(struct passwd *pw)
        exit(0);
 }
 
-void
+#ifdef SMARTCARD
+static void
+do_upload(struct passwd *pw, const char *sc_reader_id)
+{
+       Key *prv = NULL;
+       struct stat st;
+       int ret;
+
+       if (!have_identity)
+               ask_filename(pw, "Enter file in which the key is");
+       if (stat(identity_file, &st) < 0) {
+               perror(identity_file);
+               exit(1);
+       }
+       prv = load_identity(identity_file);
+       if (prv == NULL) {
+               error("load failed");
+               exit(1);
+       }
+       ret = sc_put_key(prv, sc_reader_id);
+       key_free(prv);
+       if (ret < 0)
+               exit(1);
+       logit("loading key done");
+       exit(0);
+}
+
+static void
+do_download(struct passwd *pw, const char *sc_reader_id)
+{
+       Key **keys = NULL;
+       int i;
+
+       keys = sc_get_keys(sc_reader_id, NULL);
+       if (keys == NULL)
+               fatal("cannot read public key from smartcard");
+       for (i = 0; keys[i]; i++) {
+               key_write(keys[i], stdout);
+               key_free(keys[i]);
+               fprintf(stdout, "\n");
+       }
+       xfree(keys);
+       exit(0);
+}
+#endif /* SMARTCARD */
+
+static void
 do_fingerprint(struct passwd *pw)
 {
        FILE *f;
        Key *public;
        char *comment = NULL, *cp, *ep, line[16*1024], *fp;
-       int i, skip = 0, num = 1, invalid = 1, rep, fptype;
+       int i, skip = 0, num = 1, invalid = 1;
+       enum fp_rep rep;
+       enum fp_type fptype;
        struct stat st;
 
        fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
@@ -345,7 +468,7 @@ do_fingerprint(struct passwd *pw)
        public = key_load_public(identity_file, &comment);
        if (public != NULL) {
                fp = key_fingerprint(public, fptype, rep);
-               printf("%d %s %s\n", key_size(public), fp, comment);
+               printf("%u %s %s\n", key_size(public), fp, comment);
                key_free(public);
                xfree(comment);
                xfree(fp);
@@ -379,7 +502,8 @@ do_fingerprint(struct passwd *pw)
                        if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
                                int quoted = 0;
                                comment = cp;
-                               for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) {
+                               for (; *cp && (quoted || (*cp != ' ' &&
+                                   *cp != '\t')); cp++) {
                                        if (*cp == '\\' && cp[1] == '"')
                                                cp++;   /* Skip both */
                                        else if (*cp == '"')
@@ -402,7 +526,7 @@ do_fingerprint(struct passwd *pw)
                        }
                        comment = *cp ? cp : comment;
                        fp = key_fingerprint(public, fptype, rep);
-                       printf("%d %s %s\n", key_size(public), fp,
+                       printf("%u %s %s\n", key_size(public), fp,
                            comment ? comment : "no comment");
                        xfree(fp);
                        key_free(public);
@@ -411,7 +535,7 @@ do_fingerprint(struct passwd *pw)
                fclose(f);
        }
        if (invalid) {
-               printf("%s is not a valid key file.\n", identity_file);
+               printf("%s is not a public key file.\n", identity_file);
                exit(1);
        }
        exit(0);
@@ -421,7 +545,7 @@ do_fingerprint(struct passwd *pw)
  * Perform changing a passphrase.  The argument is the passwd structure
  * for the current user.
  */
-void
+static void
 do_change_passphrase(struct passwd *pw)
 {
        char *comment;
@@ -441,8 +565,11 @@ do_change_passphrase(struct passwd *pw)
                if (identity_passphrase)
                        old_passphrase = xstrdup(identity_passphrase);
                else
-                       old_passphrase = read_passphrase("Enter old passphrase: ", 1);
-               private = key_load_private(identity_file, old_passphrase , &comment);
+                       old_passphrase =
+                           read_passphrase("Enter old passphrase: ",
+                           RP_ALLOW_STDIN);
+               private = key_load_private(identity_file, old_passphrase,
+                   &comment);
                memset(old_passphrase, 0, strlen(old_passphrase));
                xfree(old_passphrase);
                if (private == NULL) {
@@ -458,8 +585,10 @@ do_change_passphrase(struct passwd *pw)
                passphrase2 = NULL;
        } else {
                passphrase1 =
-                       read_passphrase("Enter new passphrase (empty for no passphrase): ", 1);
-               passphrase2 = read_passphrase("Enter same passphrase again: ", 1);
+                       read_passphrase("Enter new passphrase (empty for no "
+                           "passphrase): ", RP_ALLOW_STDIN);
+               passphrase2 = read_passphrase("Enter same passphrase again: ",
+                   RP_ALLOW_STDIN);
 
                /* Verify that they are the same. */
                if (strcmp(passphrase1, passphrase2) != 0) {
@@ -477,8 +606,7 @@ do_change_passphrase(struct passwd *pw)
 
        /* Save the file using the new passphrase. */
        if (!key_save_private(private, identity_file, passphrase1, comment)) {
-               printf("Saving the key failed: %s: %s.\n",
-                      identity_file, strerror(errno));
+               printf("Saving the key failed: %s.\n", identity_file);
                memset(passphrase1, 0, strlen(passphrase1));
                xfree(passphrase1);
                key_free(private);
@@ -495,10 +623,40 @@ do_change_passphrase(struct passwd *pw)
        exit(0);
 }
 
+/*
+ * Print the SSHFP RR.
+ */
+static void
+do_print_resource_record(struct passwd *pw, char *hname)
+{
+       Key *public;
+       char *comment = NULL;
+       struct stat st;
+
+       if (!have_identity)
+               ask_filename(pw, "Enter file in which the key is");
+       if (stat(identity_file, &st) < 0) {
+               perror(identity_file);
+               exit(1);
+       }
+       public = key_load_public(identity_file, &comment);
+       if (public != NULL) {
+               export_dns_rr(hname, public, stdout, print_generic);
+               key_free(public);
+               xfree(comment);
+               exit(0);
+       }
+       if (comment)
+               xfree(comment);
+
+       printf("failed to read v2 public key from %s.\n", identity_file);
+       exit(1);
+}
+
 /*
  * Change the comment of a private key file.
  */
-void
+static void
 do_change_comment(struct passwd *pw)
 {
        char new_comment[1024], *comment, *passphrase;
@@ -521,7 +679,8 @@ do_change_comment(struct passwd *pw)
                else if (identity_new_passphrase)
                        passphrase = xstrdup(identity_new_passphrase);
                else
-                       passphrase = read_passphrase("Enter passphrase: ", 1);
+                       passphrase = read_passphrase("Enter passphrase: ",
+                           RP_ALLOW_STDIN);
                /* Try to load using the passphrase. */
                private = key_load_private(identity_file, passphrase, &comment);
                if (private == NULL) {
@@ -537,7 +696,7 @@ do_change_comment(struct passwd *pw)
                fprintf(stderr, "Comments are only supported for RSA1 keys.\n");
                key_free(private);
                exit(1);
-       }       
+       }
        printf("Key now has comment '%s'\n", comment);
 
        if (identity_comment) {
@@ -556,8 +715,7 @@ do_change_comment(struct passwd *pw)
 
        /* Save the file using the new passphrase. */
        if (!key_save_private(private, identity_file, passphrase, new_comment)) {
-               printf("Saving the key failed: %s: %s.\n",
-                      identity_file, strerror(errno));
+               printf("Saving the key failed: %s.\n", identity_file);
                memset(passphrase, 0, strlen(passphrase));
                xfree(passphrase);
                key_free(private);
@@ -592,11 +750,35 @@ do_change_comment(struct passwd *pw)
        exit(0);
 }
 
-void
+static void
 usage(void)
 {
-       printf("Usage: %s [-lBpqxXyc] [-t type] [-b bits] [-f file] [-C comment] "
-           "[-N new-pass] [-P pass]\n", __progname);
+       fprintf(stderr, "Usage: %s [options]\n", __progname);
+       fprintf(stderr, "Options:\n");
+       fprintf(stderr, "  -b bits     Number of bits in the key to create.\n");
+       fprintf(stderr, "  -c          Change comment in private and public key files.\n");
+       fprintf(stderr, "  -e          Convert OpenSSH to IETF SECSH key file.\n");
+       fprintf(stderr, "  -f filename Filename of the key file.\n");
+       fprintf(stderr, "  -g          Use generic DNS resource record format.\n");
+       fprintf(stderr, "  -i          Convert IETF SECSH to OpenSSH key file.\n");
+       fprintf(stderr, "  -l          Show fingerprint of key file.\n");
+       fprintf(stderr, "  -p          Change passphrase of private key file.\n");
+       fprintf(stderr, "  -q          Quiet.\n");
+       fprintf(stderr, "  -y          Read private key file and print public key.\n");
+       fprintf(stderr, "  -t type     Specify type of key to create.\n");
+       fprintf(stderr, "  -B          Show bubblebabble digest of key file.\n");
+       fprintf(stderr, "  -C comment  Provide new comment.\n");
+       fprintf(stderr, "  -N phrase   Provide new passphrase.\n");
+       fprintf(stderr, "  -P phrase   Provide old passphrase.\n");
+       fprintf(stderr, "  -r hostname Print DNS resource record.\n");
+#ifdef SMARTCARD
+       fprintf(stderr, "  -D reader   Download public key from smartcard.\n");
+       fprintf(stderr, "  -U reader   Upload private key to smartcard.\n");
+#endif /* SMARTCARD */
+
+       fprintf(stderr, "  -G file     Generate candidates for DH-GEX moduli\n");
+       fprintf(stderr, "  -T file     Screen candidates for DH-GEX moduli\n");
+
        exit(1);
 }
 
@@ -606,21 +788,29 @@ usage(void)
 int
 main(int ac, char **av)
 {
-       char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2;
+       char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
+       char out_file[MAXPATHLEN], *reader_id = NULL;
+       char *resource_record_hostname = NULL;
        Key *private, *public;
        struct passwd *pw;
-       int opt, type, fd;
        struct stat st;
+       int opt, type, fd, download = 0, memory = 0;
+       int generator_wanted = 0, trials = 100;
+       int do_gen_candidates = 0, do_screen_candidates = 0;
+       int log_level = SYSLOG_LEVEL_INFO;
+       BIGNUM *start = NULL;
        FILE *f;
 
        extern int optind;
        extern char *optarg;
 
-       __progname = get_progname(av[0]);
-       init_rng();
-       seed_rng();
+       __progname = ssh_get_progname(av[0]);
 
        SSLeay_add_all_algorithms();
+       log_init(av[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
+
+       init_rng();
+       seed_rng();
 
        /* we need this for the home * directory.  */
        pw = getpwuid(getuid());
@@ -633,7 +823,8 @@ main(int ac, char **av)
                exit(1);
        }
 
-       while ((opt = getopt(ac, av, "dqpclBRxXyb:f:t:P:N:C:")) != -1) {
+       while ((opt = getopt(ac, av,
+           "degiqpclBRvxXyb:f:t:U:D:P:N:C:r:g:T:G:M:S:a:W:")) != -1) {
                switch (opt) {
                case 'b':
                        bits = atoi(optarg);
@@ -642,74 +833,110 @@ main(int ac, char **av)
                                exit(1);
                        }
                        break;
-
                case 'l':
                        print_fingerprint = 1;
                        break;
-
                case 'B':
                        print_bubblebabble = 1;
                        break;
-
                case 'p':
                        change_passphrase = 1;
                        break;
-
                case 'c':
                        change_comment = 1;
                        break;
-
                case 'f':
                        strlcpy(identity_file, optarg, sizeof(identity_file));
                        have_identity = 1;
                        break;
-
+               case 'g':
+                       print_generic = 1;
+                       break;
                case 'P':
                        identity_passphrase = optarg;
                        break;
-
                case 'N':
                        identity_new_passphrase = optarg;
                        break;
-
                case 'C':
                        identity_comment = optarg;
                        break;
-
                case 'q':
                        quiet = 1;
                        break;
-
                case 'R':
                        /* unused */
                        exit(0);
                        break;
-
+               case 'e':
                case 'x':
+                       /* export key */
                        convert_to_ssh2 = 1;
                        break;
-
+               case 'i':
                case 'X':
+                       /* import key */
                        convert_from_ssh2 = 1;
                        break;
-
                case 'y':
                        print_public = 1;
                        break;
-
                case 'd':
                        key_type_name = "dsa";
                        break;
-
                case 't':
                        key_type_name = optarg;
                        break;
-
+               case 'D':
+                       download = 1;
+               case 'U':
+                       reader_id = optarg;
+                       break;
+               case 'v':
+                       if (log_level == SYSLOG_LEVEL_INFO)
+                               log_level = SYSLOG_LEVEL_DEBUG1;
+                       else {
+                               if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
+                                   log_level < SYSLOG_LEVEL_DEBUG3)
+                                       log_level++;
+                       }
+                       break;
+               case 'r':
+                       resource_record_hostname = optarg;
+                       break;
+               case 'W':
+                       generator_wanted = atoi(optarg);
+                       if (generator_wanted < 1)
+                               fatal("Desired generator has bad value.");
+                       break;
+               case 'a':
+                       trials = atoi(optarg);
+                       break;
+               case 'M':
+                       memory = atoi(optarg);
+                       break;
+               case 'G':
+                       do_gen_candidates = 1;
+                       strlcpy(out_file, optarg, sizeof(out_file));
+                       break;
+               case 'T':
+                       do_screen_candidates = 1;
+                       strlcpy(out_file, optarg, sizeof(out_file));
+                       break;
+               case 'S':
+                       /* XXX - also compare length against bits */
+                       if (BN_hex2bn(&start, optarg) == 0)
+                               fatal("Invalid start point.");
+                       break;
                case '?':
                default:
                        usage();
                }
        }
+
+       /* reinit */
+       log_init(av[0], log_level, SYSLOG_FACILITY_USER, 1);
+
        if (optind < ac) {
                printf("Too many arguments.\n");
                usage();
@@ -730,9 +957,62 @@ main(int ac, char **av)
                do_convert_from_ssh2(pw);
        if (print_public)
                do_print_public(pw);
+       if (resource_record_hostname != NULL) {
+               do_print_resource_record(pw, resource_record_hostname);
+       }
+       if (reader_id != NULL) {
+#ifdef SMARTCARD
+               if (download)
+                       do_download(pw, reader_id);
+               else
+                       do_upload(pw, reader_id);
+#else /* SMARTCARD */
+               fatal("no support for smartcards.");
+#endif /* SMARTCARD */
+       }
+
+       if (do_gen_candidates) {
+               FILE *out = fopen(out_file, "w");
+
+               if (out == NULL) {
+                       error("Couldn't open modulus candidate file \"%s\": %s",
+                           out_file, strerror(errno));
+                       return (1);
+               }
+               if (gen_candidates(out, memory, bits, start) != 0)
+                       fatal("modulus candidate generation failed\n");
+
+               return (0);
+       }
+
+       if (do_screen_candidates) {
+               FILE *in;
+               FILE *out = fopen(out_file, "w");
+
+               if (have_identity && strcmp(identity_file, "-") != 0) {
+                       if ((in = fopen(identity_file, "r")) == NULL) {
+                               fatal("Couldn't open modulus candidate "
+                                   "file \"%s\": %s", identity_file,
+                                   strerror(errno));
+                       }
+               } else
+                       in = stdin;
+
+               if (out == NULL) {
+                       fatal("Couldn't open moduli file \"%s\": %s",
+                           out_file, strerror(errno));
+               }
+               if (prime_test(in, out, trials, generator_wanted) != 0)
+                       fatal("modulus screening failed\n");
+               return (0);
+       }
 
        arc4random_stir();
 
+       if (key_type_name == NULL) {
+               printf("You must specify a key type (-t).\n");
+               usage();
+       }
        type = key_type_from_name(key_type_name);
        if (type == KEY_UNSPEC) {
                fprintf(stderr, "unknown key type %s\n", key_type_name);
@@ -778,10 +1058,15 @@ main(int ac, char **av)
        else {
 passphrase_again:
                passphrase1 =
-                       read_passphrase("Enter passphrase (empty for no passphrase): ", 1);
-               passphrase2 = read_passphrase("Enter same passphrase again: ", 1);
+                       read_passphrase("Enter passphrase (empty for no "
+                           "passphrase): ", RP_ALLOW_STDIN);
+               passphrase2 = read_passphrase("Enter same passphrase again: ",
+                   RP_ALLOW_STDIN);
                if (strcmp(passphrase1, passphrase2) != 0) {
-                       /* The passphrases do not match.  Clear them and retry. */
+                       /*
+                        * The passphrases do not match.  Clear them and
+                        * retry.
+                        */
                        memset(passphrase1, 0, strlen(passphrase1));
                        memset(passphrase2, 0, strlen(passphrase2));
                        xfree(passphrase1);
@@ -803,8 +1088,7 @@ passphrase_again:
 
        /* Save the key with the given passphrase and comment. */
        if (!key_save_private(private, identity_file, passphrase1, comment)) {
-               printf("Saving the key failed: %s: %s.\n",
-                   identity_file, strerror(errno));
+               printf("Saving the key failed: %s.\n", identity_file);
                memset(passphrase1, 0, strlen(passphrase1));
                xfree(passphrase1);
                exit(1);
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