=================================================================== RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/ssh-keygen.c,v retrieving revision 1.25.2.4 retrieving revision 1.32 diff -u -r1.25.2.4 -r1.32 --- src/usr.bin/ssh/ssh-keygen.c 2001/03/12 15:44:16 1.25.2.4 +++ src/usr.bin/ssh/ssh-keygen.c 2000/10/09 21:30:44 1.32 @@ -12,20 +12,23 @@ */ #include "includes.h" -RCSID("$OpenBSD: ssh-keygen.c,v 1.25.2.4 2001/03/12 15:44:16 jason Exp $"); +RCSID("$OpenBSD: ssh-keygen.c,v 1.32 2000/10/09 21:30:44 markus Exp $"); #include #include +#include +#include +#include "ssh.h" #include "xmalloc.h" #include "key.h" +#include "rsa.h" +#include "dsa.h" #include "authfile.h" #include "uuencode.h" + #include "buffer.h" #include "bufaux.h" -#include "pathnames.h" -#include "log.h" -#include "readpass.h" /* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ int bits = 1024; @@ -64,10 +67,8 @@ int convert_to_ssh2 = 0; int convert_from_ssh2 = 0; int print_public = 0; +int dsa_mode = 0; -/* default to RSA for SSH-1 */ -char *key_type_name = "rsa1"; - /* argv0 */ extern char *__progname; @@ -77,26 +78,11 @@ 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: - 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); + snprintf(identity_file, sizeof(identity_file), "%s/%s", + pw->pw_dir, + dsa_mode ? SSH_CLIENT_ID_DSA: SSH_CLIENT_IDENTITY); + printf("%s (%s): ", prompt, identity_file); + fflush(stdout); if (fgets(buf, sizeof(buf), stdin) == NULL) exit(1); if (strchr(buf, '\n')) @@ -124,14 +110,14 @@ #define SSH_COM_PUBLIC_BEGIN "---- BEGIN 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 +#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb void do_convert_to_ssh2(struct passwd *pw) { Key *k; int len; - u_char *blob; + unsigned char *blob; struct stat st; if (!have_identity) @@ -140,12 +126,12 @@ perror(identity_file); exit(1); } - k = key_new(KEY_UNSPEC); + k = key_new(KEY_DSA); if (!try_load_key(identity_file, k)) { fprintf(stderr, "load failed\n"); exit(1); } - key_to_blob(k, &blob, &len); + dsa_make_key_blob(k, &blob, &len); fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); fprintf(stdout, "Comment: \"%d-bit %s, converted from OpenSSH by %s@%s\"\n", @@ -165,7 +151,7 @@ int bytes = (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); + BN_bin2bn((unsigned char *)buffer_ptr(b), bytes, value); buffer_consume(b, bytes); } @@ -269,14 +255,14 @@ *p = '\0'; strlcat(encoded, line, sizeof(encoded)); } - blen = uudecode(encoded, (u_char *)blob, sizeof(blob)); + blen = uudecode(encoded, (unsigned char *)blob, sizeof(blob)); if (blen < 0) { fprintf(stderr, "uudecode failed.\n"); exit(1); } k = private ? do_convert_private_ssh2_from_blob(blob, blen) : - key_from_blob(blob, blen); + dsa_key_from_blob(blob, blen); if (k == NULL) { fprintf(stderr, "decode blob failed.\n"); exit(1); @@ -298,6 +284,8 @@ do_print_public(struct passwd *pw) { Key *k; + int len; + unsigned char *blob; struct stat st; if (!have_identity) @@ -306,14 +294,16 @@ perror(identity_file); exit(1); } - k = key_new(KEY_UNSPEC); + k = key_new(KEY_DSA); if (!try_load_key(identity_file, k)) { fprintf(stderr, "load failed\n"); exit(1); } + dsa_make_key_blob(k, &blob, &len); if (!key_write(k, stdout)) fprintf(stderr, "key_write failed"); key_free(k); + xfree(blob); fprintf(stdout, "\n"); exit(0); } @@ -321,11 +311,13 @@ void do_fingerprint(struct passwd *pw) { + /* XXX RSA1 only */ FILE *f; Key *public; char *comment = NULL, *cp, *ep, line[16*1024]; - int i, skip = 0, num = 1, invalid = 1, success = 0; + int i, skip = 0, num = 1, invalid = 1; + unsigned int ignore; struct stat st; if (!have_identity) @@ -334,21 +326,11 @@ perror(identity_file); exit(1); } - public = key_new(KEY_RSA1); + public = key_new(KEY_RSA); if (load_public_key(identity_file, public, &comment)) { - success = 1; - } else { + printf("%d %s %s\n", BN_num_bits(public->rsa->n), + key_fingerprint(public), comment); key_free(public); - public = key_new(KEY_UNSPEC); - if (try_load_public_key(identity_file, public, &comment)) - success = 1; - else - debug("try_load_public_key KEY_UNSPEC failed"); - } - if (success) { - printf("%d %s %s\n", key_size(public), key_fingerprint(public), comment); - key_free(public); - xfree(comment); exit(0); } @@ -388,21 +370,13 @@ *cp++ = '\0'; } ep = cp; - public = key_new(KEY_RSA1); - if (key_read(public, &cp) != 1) { - cp = ep; - key_free(public); - public = key_new(KEY_UNSPEC); - if (key_read(public, &cp) != 1) { - key_free(public); - continue; - } + if (auth_rsa_read_key(&cp, &ignore, public->rsa->e, public->rsa->n)) { + invalid = 0; + comment = *cp ? cp : comment; + printf("%d %s %s\n", key_size(public), + key_fingerprint(public), + comment ? comment : "no comment"); } - comment = *cp ? cp : comment; - printf("%d %s %s\n", key_size(public), - key_fingerprint(public), - comment ? comment : "no comment"); - invalid = 0; } fclose(f); } @@ -426,7 +400,7 @@ struct stat st; Key *private; Key *public; - int type = KEY_RSA1; + int type = dsa_mode ? KEY_DSA : KEY_RSA; if (!have_identity) ask_filename(pw, "Enter file in which the key is"); @@ -434,13 +408,18 @@ perror(identity_file); exit(1); } - public = key_new(type); - if (!load_public_key(identity_file, public, NULL)) { - type = KEY_UNSPEC; - } else { + + if (type == KEY_RSA) { + /* XXX this works currently only for RSA */ + public = key_new(type); + if (!load_public_key(identity_file, public, NULL)) { + printf("%s is not a valid key file.\n", identity_file); + exit(1); + } /* Clear the public key since we are just about to load the whole file. */ key_free(public); } + /* Try to load the file with empty passphrase. */ private = key_new(type); if (!load_private_key(identity_file, "", private, &comment)) { @@ -525,14 +504,13 @@ * Try to load the public key from the file the verify that it is * readable and of the proper format. */ - public = key_new(KEY_RSA1); + public = key_new(KEY_RSA); if (!load_public_key(identity_file, public, NULL)) { printf("%s is not a valid key file.\n", identity_file); - printf("Comments are only supported in RSA1 keys\n"); exit(1); } - private = key_new(KEY_RSA1); + private = key_new(KEY_RSA); if (load_private_key(identity_file, "", private, &comment)) passphrase = xstrdup(""); else { @@ -601,7 +579,7 @@ void usage(void) { - printf("Usage: %s [-lpqxXyc] [-t type] [-b bits] [-f file] [-C comment] [-N new-pass] [-P pass]\n", __progname); + printf("Usage: %s [-lpqxXydc] [-b bits] [-f file] [-C comment] [-N new-pass] [-P pass]\n", __progname); exit(1); } @@ -613,12 +591,11 @@ { char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2; struct passwd *pw; - int opt, type; + int opt; struct stat st; FILE *f; Key *private; Key *public; - extern int optind; extern char *optarg; @@ -635,7 +612,7 @@ exit(1); } - while ((opt = getopt(ac, av, "dqpclRxXyb:f:t:P:N:C:")) != -1) { + while ((opt = getopt(ac, av, "dqpclRxXyb:f:P:N:C:")) != EOF) { switch (opt) { case 'b': bits = atoi(optarg); @@ -679,8 +656,10 @@ break; case 'R': - /* unused */ - exit(0); + if (rsa_alive() == 0) + exit(1); + else + exit(0); break; case 'x': @@ -696,13 +675,9 @@ break; case 'd': - key_type_name = "dsa"; + dsa_mode = 1; break; - case 't': - key_type_name = optarg; - break; - case '?': default: usage(); @@ -716,6 +691,13 @@ printf("Can only have one of -p and -c.\n"); usage(); } + /* check if RSA support is needed and exists */ + if (dsa_mode == 0 && rsa_alive() == 0) { + fprintf(stderr, + "%s: no RSA support in libssl and libcrypto. See ssl(8).\n", + __progname); + exit(1); + } if (print_fingerprint) do_fingerprint(pw); if (change_passphrase) @@ -731,25 +713,28 @@ arc4random_stir(); - type = key_type_from_name(key_type_name); - if (type == KEY_UNSPEC) { - fprintf(stderr, "unknown key type %s\n", key_type_name); - exit(1); + if (dsa_mode != 0) { + if (!quiet) + printf("Generating DSA parameter and key.\n"); + public = private = dsa_generate_key(bits); + if (private == NULL) { + fprintf(stderr, "dsa_generate_keys failed"); + exit(1); + } + } else { + if (quiet) + rsa_set_verbose(0); + /* Generate the rsa key pair. */ + public = key_new(KEY_RSA); + private = key_new(KEY_RSA); + rsa_generate_key(private->rsa, public->rsa, bits); } - if (!quiet) - printf("Generating public/private %s key pair.\n", key_type_name); - private = key_generate(type, bits); - if (private == NULL) { - fprintf(stderr, "key_generate failed"); - exit(1); - } - public = key_from_private(private); if (!have_identity) ask_filename(pw, "Enter file in which to save the key"); /* Create ~/.ssh directory if it doesn\'t already exist. */ - snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR); + snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, SSH_USER_DIR); if (strstr(identity_file, dotsshdir) != NULL && stat(dotsshdir, &st) < 0) { if (mkdir(dotsshdir, 0700) < 0) @@ -812,7 +797,9 @@ xfree(passphrase1); /* Clear the private key and the random number generator. */ - key_free(private); + if (private != public) { + key_free(private); + } arc4random_stir(); if (!quiet)