src/usr.bin/ssh/ssh-keygen.c - diff

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Diff for /src/usr.bin/ssh/ssh-keygen.c between version 1.406 and 1.421

version 1.406, 2020/04/17 07:16:07

version 1.421, 2020/10/18 11:32:02

Line 127

static char *certflags_src_addr = NULL;

/* Arbitrary extensions specified by user */

struct cert_userext {

struct cert_ext {

char *key;

char *val;

int crit;

};

static struct cert_userext *cert_userext;

static struct cert_ext *cert_ext;

static size_t ncert_userext;

static size_t ncert_ext;

/* Conversion to/from various formats */

enum {

Line 309

if ((r = sshkey_load_private(filename, "", &prv, commentp)) == 0)

return prv;

if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)

fatal("Load key \"%s\": %s", filename, ssh_err(r));

fatal_r(r, "Load key \"%s\"", filename);

if (identity_passphrase)

pass = xstrdup(identity_passphrase);

else

Line 317

r = sshkey_load_private(filename, pass, &prv, commentp);

freezero(pass, strlen(pass));

if (r != 0)

fatal("Load key \"%s\": %s", filename, ssh_err(r));

fatal_r(r, "Load key \"%s\"", filename);

return prv;

}

Line 335

int r;

if ((b = sshbuf_new()) == NULL)

fatal("%s: sshbuf_new failed", __func__);

fatal_f("sshbuf_new failed");

if ((r = sshkey_putb(k, b)) != 0)

fatal("key_to_blob failed: %s", ssh_err(r));

fatal_fr(r, "put key");

if ((b64 = sshbuf_dtob64_string(b, 1)) == NULL)

fatal("%s: sshbuf_dtob64_string failed", __func__);

fatal_f("sshbuf_dtob64_string failed");

/* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */

snprintf(comment, sizeof(comment),

Line 374

fatal("PEM_write_EC_PUBKEY failed");

break;

default:

fatal("%s: unsupported key type %s", __func__, sshkey_type(k));

fatal_f("unsupported key type %s", sshkey_type(k));

}

exit(0);

}

Line 396

fatal("PEM_write_EC_PUBKEY failed");

break;

default:

fatal("%s: unsupported key type %s", __func__, sshkey_type(k));

fatal_f("unsupported key type %s", sshkey_type(k));

}

exit(0);

}

Line 425

do_convert_to_pem(k);

break;

default:

fatal("%s: unknown key format %d", __func__, convert_format);

fatal_f("unknown key format %d", convert_format);

}

exit(0);

}

Line 441

int r;

if ((r = sshbuf_get_u32(b, &bignum_bits)) != 0)

fatal("%s: buffer error: %s", __func__, ssh_err(r));

fatal_fr(r, "parse");

bytes = (bignum_bits + 7) / 8;

if (sshbuf_len(b) < bytes)

fatal("%s: input buffer too small: need %d have %zu",

fatal_f("input buffer too small: need %d have %zu",

__func__, bytes, sshbuf_len(b));

bytes, sshbuf_len(b));

if (BN_bin2bn(sshbuf_ptr(b), bytes, value) == NULL)

fatal("%s: BN_bin2bn failed", __func__);

fatal_f("BN_bin2bn failed");

if ((r = sshbuf_consume(b, bytes)) != 0)

fatal("%s: buffer error: %s", __func__, ssh_err(r));

fatal_fr(r, "consume");

}

static struct sshkey *

Line 468

BIGNUM *rsa_p = NULL, *rsa_q = NULL, *rsa_iqmp = NULL;

if ((r = sshbuf_get_u32(b, &magic)) != 0)

fatal("%s: buffer error: %s", __func__, ssh_err(r));

fatal_fr(r, "parse magic");

if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {

error("bad magic 0x%x != 0x%x", magic,

Line 481

(r = sshbuf_get_u32(b, &i2)) != 0 ||

(r = sshbuf_get_u32(b, &i3)) != 0 ||

(r = sshbuf_get_u32(b, &i4)) != 0)

fatal("%s: buffer error: %s", __func__, ssh_err(r));

fatal_fr(r, "parse");

debug("ignore (%d %d %d %d)", i1, i2, i3, i4);

if (strcmp(cipher, "none") != 0) {

error("unsupported cipher %s", cipher);

Line 510

(dsa_g = BN_new()) == NULL ||

(dsa_pub_key = BN_new()) == NULL ||

(dsa_priv_key = BN_new()) == NULL)

fatal("%s: BN_new", __func__);

fatal_f("BN_new");

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);

if (!DSA_set0_pqg(key->dsa, dsa_p, dsa_q, dsa_g))

fatal("%s: DSA_set0_pqg failed", __func__);

fatal_f("DSA_set0_pqg failed");

dsa_p = dsa_q = dsa_g = NULL; /* transferred */

if (!DSA_set0_key(key->dsa, dsa_pub_key, dsa_priv_key))

fatal("%s: DSA_set0_key failed", __func__);

fatal_f("DSA_set0_key failed");

dsa_pub_key = dsa_priv_key = NULL; /* transferred */

break;

case KEY_RSA:

if ((r = sshbuf_get_u8(b, &e1)) != 0 ||

(e1 < 30 && (r = sshbuf_get_u8(b, &e2)) != 0) ||

(e1 < 30 && (r = sshbuf_get_u8(b, &e3)) != 0))

fatal("%s: buffer error: %s", __func__, ssh_err(r));

fatal_fr(r, "parse RSA");

e = e1;

debug("e %lx", e);

if (e < 30) {

Line 539

debug("e %lx", e);

}

if ((rsa_e = BN_new()) == NULL)

fatal("%s: BN_new", __func__);

fatal_f("BN_new");

if (!BN_set_word(rsa_e, e)) {

BN_clear_free(rsa_e);

sshkey_free(key);

Line 550

(rsa_p = BN_new()) == NULL ||

(rsa_q = BN_new()) == NULL ||

(rsa_iqmp = BN_new()) == NULL)

fatal("%s: BN_new", __func__);

fatal_f("BN_new");

buffer_get_bignum_bits(b, rsa_d);

buffer_get_bignum_bits(b, rsa_n);

buffer_get_bignum_bits(b, rsa_iqmp);

buffer_get_bignum_bits(b, rsa_q);

buffer_get_bignum_bits(b, rsa_p);

if (!RSA_set0_key(key->rsa, rsa_n, rsa_e, rsa_d))

fatal("%s: RSA_set0_key failed", __func__);

fatal_f("RSA_set0_key failed");

rsa_n = rsa_e = rsa_d = NULL; /* transferred */

if (!RSA_set0_factors(key->rsa, rsa_p, rsa_q))

fatal("%s: RSA_set0_factors failed", __func__);

fatal_f("RSA_set0_factors failed");

rsa_p = rsa_q = NULL; /* transferred */

if ((r = ssh_rsa_complete_crt_parameters(key, rsa_iqmp)) != 0)

fatal("generate RSA parameters failed: %s", ssh_err(r));

fatal_fr(r, "generate RSA parameters");

BN_clear_free(rsa_iqmp);

break;

}

rlen = sshbuf_len(b);

if (rlen != 0)

error("%s: remaining bytes in key blob %d", __func__, rlen);

error_f("remaining bytes in key blob %d", rlen);

/* try the key */

if (sshkey_sign(key, &sig, &slen, data, sizeof(data),

NULL, NULL, 0) != 0 ||

NULL, NULL, NULL, 0) != 0 ||

sshkey_verify(key, sig, slen, data, sizeof(data),

NULL, 0, NULL) != 0) {

sshkey_free(key);

Line 652

(encoded[len-3] == '='))

encoded[len-3] = '\0';

if ((r = sshbuf_b64tod(buf, encoded)) != 0)

fatal("%s: base64 decoding failed: %s", __func__, ssh_err(r));

fatal_fr(r, "base64 decode");

if (*private)

if (*private) {

*k = do_convert_private_ssh2(buf);

if ((*k = do_convert_private_ssh2(buf)) == NULL)

else if ((r = sshkey_fromb(buf, k)) != 0)

fatal_f("private key conversion failed");

fatal("decode blob failed: %s", ssh_err(r));

} else if ((r = sshkey_fromb(buf, k)) != 0)

fatal_fr(r, "parse key");

sshbuf_free(buf);

fclose(fp);

}

Line 670

Line 671

if ((fp = fopen(identity_file, "r")) == NULL)

fatal("%s: %s: %s", __progname, identity_file, strerror(errno));

if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {

fatal("%s: %s is not a recognised public key format", __func__,

fatal_f("%s is not a recognised public key format",

identity_file);

}

fclose(fp);

Line 695

Line 696

(*k)->ecdsa_nid = sshkey_ecdsa_key_to_nid((*k)->ecdsa);

break;

default:

fatal("%s: unsupported pubkey type %d", __func__,

fatal_f("unsupported pubkey type %d",

EVP_PKEY_base_id(pubkey));

}

EVP_PKEY_free(pubkey);

Line 718

Line 719

fclose(fp);

return;

}

fatal("%s: unrecognised raw private key format", __func__);

fatal_f("unrecognised raw private key format");

}

static void

Line 744

Line 745

do_convert_from_pem(&k, &private);

break;

default:

fatal("%s: unknown key format %d", __func__, convert_format);

fatal_f("unknown key format %d", convert_format);

}

if (!private) {

Line 767

Line 768

NULL, 0, NULL, NULL);

break;

default:

fatal("%s: unsupported key type %s", __func__,

fatal_f("unsupported key type %s", sshkey_type(k));

sshkey_type(k));

}

Line 793

fatal("%s: %s", identity_file, strerror(errno));

prv = load_identity(identity_file, &comment);

if ((r = sshkey_write(prv, stdout)) != 0)

error("sshkey_write failed: %s", ssh_err(r));

fatal_fr(r, "write key");

sshkey_free(prv);

if (comment != NULL && *comment != '\0')

fprintf(stdout, " %s", comment);

fprintf(stdout, "\n");

if (sshkey_is_sk(prv)) {

debug("sk_application: \"%s\", sk_flags 0x%02x",

prv->sk_application, prv->sk_flags);

}

sshkey_free(prv);

free(comment);

exit(0);

}

Line 825

Line 829

ra = sshkey_fingerprint(keys[i], fingerprint_hash,

SSH_FP_RANDOMART);

if (fp == NULL || ra == NULL)

fatal("%s: sshkey_fingerprint fail", __func__);

fatal_f("sshkey_fingerprint fail");

printf("%u %s %s (PKCS11 key)\n", sshkey_size(keys[i]),

fp, sshkey_type(keys[i]));

if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)

Line 876

Line 880

fp = sshkey_fingerprint(public, fptype, rep);

ra = sshkey_fingerprint(public, fingerprint_hash, SSH_FP_RANDOMART);

if (fp == NULL || ra == NULL)

fatal("%s: sshkey_fingerprint failed", __func__);

fatal_f("sshkey_fingerprint failed");

mprintf("%u %s %s (%s)\n", sshkey_size(public), fp,

comment ? comment : "no comment", sshkey_type(public));

if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)

Line 890

Line 894

{

struct stat st;

char *comment = NULL;

struct sshkey *key = NULL;

struct sshkey *privkey = NULL, *pubkey = NULL;

int r;

if (stat(identity_file, &st) == -1)

fatal("%s: %s", path, strerror(errno));

if ((r = sshkey_load_private(path, NULL, &key, &comment)) != 0) {

if ((r = sshkey_load_public(path, &pubkey, &comment)) != 0)

debug("load private \"%s\": %s", path, ssh_err(r));

debug_r(r, "load public \"%s\"", path);

if ((r = sshkey_load_public(path, &key, &comment)) != 0) {

if (pubkey == NULL || comment == NULL || *comment == '\0') {

debug("load public \"%s\": %s", path, ssh_err(r));

free(comment);

fatal("%s is not a key file.", path);

if ((r = sshkey_load_private(path, NULL,

}

&privkey, &comment)) != 0)

debug_r(r, "load private \"%s\"", path);

}

if (pubkey == NULL && privkey == NULL)

fatal("%s is not a key file.", path);

fingerprint_one_key(key, comment);

fingerprint_one_key(pubkey == NULL ? privkey : pubkey, comment);

sshkey_free(key);

sshkey_free(pubkey);

sshkey_free(privkey);

free(comment);

}

Line 1030

Line 1038

struct sshkey *private, *public;

char comment[1024], *prv_tmp, *pub_tmp, *prv_file, *pub_file;

int i, type, fd, r;

FILE *f;

for (i = 0; key_types[i].key_type; i++) {

public = private = NULL;

Line 1068

Line 1075

fflush(stdout);

type = sshkey_type_from_name(key_types[i].key_type);

if ((fd = mkstemp(prv_tmp)) == -1) {

error("Could not save your public key in %s: %s",

error("Could not save your private key in %s: %s",

prv_tmp, strerror(errno));

goto failnext;

}

close(fd); /* just using mkstemp() to generate/reserve a name */

(void)close(fd); /* just using mkstemp() to reserve a name */

bits = 0;

type_bits_valid(type, NULL, &bits);

if ((r = sshkey_generate(type, bits, &private)) != 0) {

error("sshkey_generate failed: %s", ssh_err(r));

error_r(r, "sshkey_generate failed");

goto failnext;

}

if ((r = sshkey_from_private(private, &public)) != 0)

fatal("sshkey_from_private failed: %s", ssh_err(r));

fatal_fr(r, "sshkey_from_private");

snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,

hostname);

if ((r = sshkey_save_private(private, prv_tmp, "",

comment, private_key_format, openssh_format_cipher,

rounds)) != 0) {

error("Saving key \"%s\" failed: %s",

error_r(r, "Saving key \"%s\" failed", prv_tmp);

prv_tmp, ssh_err(r));

goto failnext;

}

if ((fd = mkstemp(pub_tmp)) == -1) {

Line 1096

Line 1102

goto failnext;

}

(void)fchmod(fd, 0644);

f = fdopen(fd, "w");

(void)close(fd);

if (f == NULL) {

if ((r = sshkey_save_public(public, pub_tmp, comment)) != 0) {

error("fdopen %s failed: %s", pub_tmp, strerror(errno));

error_r(r, "Unable to save public key to %s",

close(fd);

identity_file);

goto failnext;

}

if ((r = sshkey_write(public, f)) != 0) {

error("write key failed: %s", ssh_err(r));

fclose(f);

goto failnext;

}

fprintf(f, " %s\n", comment);

if (ferror(f) != 0) {

error("write key failed: %s", strerror(errno));

fclose(f);

goto failnext;

}

if (fclose(f) != 0) {

error("key close failed: %s", strerror(errno));

goto failnext;

}

/* Rename temporary files to their permanent locations. */

if (rename(pub_tmp, pub_file) != 0) {

Line 1248

Line 1239

ra = sshkey_fingerprint(l->key,

fingerprint_hash, SSH_FP_RANDOMART);

if (fp == NULL || ra == NULL)

fatal("%s: sshkey_fingerprint failed",

fatal_f("sshkey_fingerprint failed");

__func__);

mprintf("%s %s %s%s%s\n", ctx->host,

sshkey_type(l->key), fp,

l->comment[0] ? " " : "",

Line 1281

Line 1271

int r, fd, oerrno, inplace = 0;

struct known_hosts_ctx ctx;

u_int foreach_options;

struct stat sb;

if (!have_identity) {

cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);

Line 1290

Line 1281

free(cp);

have_identity = 1;

}

if (stat(identity_file, &sb) != 0)

fatal("Cannot stat %s: %s", identity_file, strerror(errno));

memset(&ctx, 0, sizeof(ctx));

ctx.out = stdout;

Line 1316

Line 1309

unlink(tmp);

fatal("fdopen: %s", strerror(oerrno));

}

fchmod(fd, sb.st_mode & 0644);

inplace = 1;

}

/* XXX support identity_file == "-" for stdin */

Line 1326

Line 1320

foreach_options)) != 0) {

if (inplace)

unlink(tmp);

fatal("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));

fatal_fr(r, "hostkeys_foreach");

}

if (inplace)

Line 1405

Line 1399

goto badkey;

} else if (r != 0) {

badkey:

fatal("Failed to load key %s: %s", identity_file, ssh_err(r));

fatal_r(r, "Failed to load key %s", identity_file);

}

if (comment)

mprintf("Key has comment '%s'\n", comment);

Line 1437

Line 1431

/* Save the file using the new passphrase. */

if ((r = sshkey_save_private(private, identity_file, passphrase1,

comment, private_key_format, openssh_format_cipher, rounds)) != 0) {

error("Saving key \"%s\" failed: %s.",

error_r(r, "Saving key \"%s\" failed", identity_file);

identity_file, ssh_err(r));

freezero(passphrase1, strlen(passphrase1));

sshkey_free(private);

free(comment);

Line 1466

Line 1459

int r;

if (fname == NULL)

fatal("%s: no filename", __func__);

fatal_f("no filename");

if (stat(fname, &st) == -1) {

if (errno == ENOENT)

return 0;

fatal("%s: %s", fname, strerror(errno));

}

if ((r = sshkey_load_public(fname, &public, &comment)) != 0)

fatal("Failed to read v2 public key from \"%s\": %s.",

fatal_r(r, "Failed to read v2 public key from \"%s\"", fname);

fname, ssh_err(r));

export_dns_rr(hname, public, stdout, print_generic);

sshkey_free(public);

free(comment);

Line 1491

Line 1483

struct sshkey *private;

struct sshkey *public;

struct stat st;

FILE *f;

int r;

int r, fd;

if (!have_identity)

ask_filename(pw, "Enter file in which the key is");

Line 1502

Line 1493

&private, &comment)) == 0)

passphrase = xstrdup("");

else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)

fatal("Cannot load private key \"%s\": %s.",

fatal_r(r, "Cannot load private key \"%s\"", identity_file);

identity_file, ssh_err(r));

else {

if (identity_passphrase)

passphrase = xstrdup(identity_passphrase);

Line 1516

Line 1506

if ((r = sshkey_load_private(identity_file, passphrase,

&private, &comment)) != 0) {

freezero(passphrase, strlen(passphrase));

fatal("Cannot load private key \"%s\": %s.",

fatal_r(r, "Cannot load private key \"%s\"",

identity_file, ssh_err(r));

identity_file);

}

Line 1558

Line 1548

if ((r = sshkey_save_private(private, identity_file, passphrase,

new_comment, private_key_format, openssh_format_cipher,

rounds)) != 0) {

error("Saving key \"%s\" failed: %s",

error_r(r, "Saving key \"%s\" failed", identity_file);

identity_file, ssh_err(r));

freezero(passphrase, strlen(passphrase));

sshkey_free(private);

free(comment);

Line 1567

Line 1556

}

freezero(passphrase, strlen(passphrase));

if ((r = sshkey_from_private(private, &public)) != 0)

fatal("sshkey_from_private failed: %s", ssh_err(r));

fatal_fr(r, "sshkey_from_private");

sshkey_free(private);

strlcat(identity_file, ".pub", sizeof(identity_file));

fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);

if ((r = sshkey_save_public(public, identity_file, new_comment)) != 0)

if (fd == -1)

fatal_r(r, "Unable to save public key to %s", identity_file);

fatal("Could not save your public key in %s", identity_file);

f = fdopen(fd, "w");

if (f == NULL)

fatal("fdopen %s failed: %s", identity_file, strerror(errno));

if ((r = sshkey_write(public, f)) != 0)

fatal("write key failed: %s", ssh_err(r));

sshkey_free(public);

fprintf(f, " %s\n", new_comment);

fclose(f);

free(comment);

if (strlen(new_comment) > 0)

Line 1594

Line 1574

}

static void

add_flag_option(struct sshbuf *c, const char *name)

cert_ext_add(const char *key, const char *value, int iscrit)

{

int r;

cert_ext = xreallocarray(cert_ext, ncert_ext + 1, sizeof(*cert_ext));

cert_ext[ncert_ext].key = xstrdup(key);

debug3("%s: %s", __func__, name);

cert_ext[ncert_ext].val = value == NULL ? NULL : xstrdup(value);

if ((r = sshbuf_put_cstring(c, name)) != 0 ||

cert_ext[ncert_ext].crit = iscrit;

(r = sshbuf_put_string(c, NULL, 0)) != 0)

ncert_ext++;

fatal("%s: buffer error: %s", __func__, ssh_err(r));

}

static void

/* qsort(3) comparison function for certificate extensions */

add_string_option(struct sshbuf *c, const char *name, const char *value)

static int

cert_ext_cmp(const void *_a, const void *_b)

{

struct sshbuf *b;

const struct cert_ext *a = (const struct cert_ext *)_a;

const struct cert_ext *b = (const struct cert_ext *)_b;

int r;

debug3("%s: %s=%s", __func__, name, value);

if (a->crit != b->crit)

if ((b = sshbuf_new()) == NULL)

return (a->crit < b->crit) ? -1 : 1;

fatal("%s: sshbuf_new failed", __func__);

if ((r = strcmp(a->key, b->key)) != 0)

if ((r = sshbuf_put_cstring(b, value)) != 0 ||

return r;

(r = sshbuf_put_cstring(c, name)) != 0 ||

if ((a->val == NULL) != (b->val == NULL))

(r = sshbuf_put_stringb(c, b)) != 0)

return (a->val == NULL) ? -1 : 1;

fatal("%s: buffer error: %s", __func__, ssh_err(r));

if (a->val != NULL && (r = strcmp(a->val, b->val)) != 0)

return r;

sshbuf_free(b);

return 0;

}

#define OPTIONS_CRITICAL 1

Line 1626

Line 1607

static void

prepare_options_buf(struct sshbuf *c, int which)

{

struct sshbuf *b;

size_t i;

int r;

const struct cert_ext *ext;

if ((b = sshbuf_new()) == NULL)

fatal_f("sshbuf_new failed");

sshbuf_reset(c);

if ((which & OPTIONS_CRITICAL) != 0 &&

for (i = 0; i < ncert_ext; i++) {

certflags_command != NULL)

ext = &cert_ext[i];

add_string_option(c, "force-command", certflags_command);

if ((ext->crit && (which & OPTIONS_EXTENSIONS)) ||

if ((which & OPTIONS_EXTENSIONS) != 0 &&

(!ext->crit && (which & OPTIONS_CRITICAL)))

(certflags_flags & CERTOPT_X_FWD) != 0)

add_flag_option(c, "permit-X11-forwarding");

if ((which & OPTIONS_EXTENSIONS) != 0 &&

(certflags_flags & CERTOPT_AGENT_FWD) != 0)

add_flag_option(c, "permit-agent-forwarding");

if ((which & OPTIONS_EXTENSIONS) != 0 &&

(certflags_flags & CERTOPT_PORT_FWD) != 0)

add_flag_option(c, "permit-port-forwarding");

if ((which & OPTIONS_EXTENSIONS) != 0 &&

(certflags_flags & CERTOPT_PTY) != 0)

add_flag_option(c, "permit-pty");

if ((which & OPTIONS_EXTENSIONS) != 0 &&

(certflags_flags & CERTOPT_USER_RC) != 0)

add_flag_option(c, "permit-user-rc");

if ((which & OPTIONS_EXTENSIONS) != 0 &&

(certflags_flags & CERTOPT_NO_REQUIRE_USER_PRESENCE) != 0)

add_flag_option(c, "no-touch-required");

if ((which & OPTIONS_CRITICAL) != 0 &&

certflags_src_addr != NULL)

add_string_option(c, "source-address", certflags_src_addr);

for (i = 0; i < ncert_userext; i++) {

if ((cert_userext[i].crit && (which & OPTIONS_EXTENSIONS)) ||

(!cert_userext[i].crit && (which & OPTIONS_CRITICAL)))

continue;

if (cert_userext[i].val == NULL)

if (ext->val == NULL) {

add_flag_option(c, cert_userext[i].key);

/* flag option */

else {

debug3_f("%s", ext->key);

add_string_option(c, cert_userext[i].key,

if ((r = sshbuf_put_cstring(c, ext->key)) != 0 ||

cert_userext[i].val);

(r = sshbuf_put_string(c, NULL, 0)) != 0)

fatal_fr(r, "prepare flag");

} else {

/* key/value option */

debug3_f("%s=%s", ext->key, ext->val);

sshbuf_reset(b);

if ((r = sshbuf_put_cstring(c, ext->key)) != 0 ||

(r = sshbuf_put_cstring(b, ext->val)) != 0 ||

(r = sshbuf_put_stringb(c, b)) != 0)

fatal_fr(r, "prepare k/v");

}

sshbuf_free(b);

}

static void

finalise_cert_exts(void)

{

/* critical options */

if (certflags_command != NULL)

cert_ext_add("force-command", certflags_command, 1);

if (certflags_src_addr != NULL)

cert_ext_add("source-address", certflags_src_addr, 1);

/* extensions */

if ((certflags_flags & CERTOPT_X_FWD) != 0)

cert_ext_add("permit-X11-forwarding", NULL, 0);

if ((certflags_flags & CERTOPT_AGENT_FWD) != 0)

cert_ext_add("permit-agent-forwarding", NULL, 0);

if ((certflags_flags & CERTOPT_PORT_FWD) != 0)

cert_ext_add("permit-port-forwarding", NULL, 0);

if ((certflags_flags & CERTOPT_PTY) != 0)

cert_ext_add("permit-pty", NULL, 0);

if ((certflags_flags & CERTOPT_USER_RC) != 0)

cert_ext_add("permit-user-rc", NULL, 0);

if ((certflags_flags & CERTOPT_NO_REQUIRE_USER_PRESENCE) != 0)

cert_ext_add("no-touch-required", NULL, 0);

/* order lexically by key */

if (ncert_ext > 0)

qsort(cert_ext, ncert_ext, sizeof(*cert_ext), cert_ext_cmp);

}

static struct sshkey *

load_pkcs11_key(char *path)

{

Line 1674

Line 1673

int r, i, nkeys;

if ((r = sshkey_load_public(path, &public, NULL)) != 0)

fatal("Couldn't load CA public key \"%s\": %s",

fatal_r(r, "Couldn't load CA public key \"%s\"", path);

path, ssh_err(r));

nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase,

&keys, NULL);

debug3("%s: %d keys", __func__, nkeys);

debug3_f("%d keys", nkeys);

if (nkeys <= 0)

fatal("cannot read public key from pkcs11");

for (i = 0; i < nkeys; i++) {

Line 1701

Line 1699

static int

agent_signer(struct sshkey *key, u_char **sigp, size_t *lenp,

const u_char *data, size_t datalen,

const char *alg, const char *provider, u_int compat, void *ctx)

const char *alg, const char *provider, const char *pin,

u_int compat, void *ctx)

{

int *agent_fdp = (int *)ctx;

Line 1714

Line 1713

unsigned long long cert_serial, int cert_serial_autoinc,

int argc, char **argv)

{

int r, i, fd, found, agent_fd = -1;

int r, i, found, agent_fd = -1;

u_int n;

struct sshkey *ca, *public;

char valid[64], *otmp, *tmp, *cp, *out, *comment;

char *ca_fp = NULL, **plist = NULL;

char *ca_fp = NULL, **plist = NULL, *pin = NULL;

FILE *f;

struct ssh_identitylist *agent_ids;

size_t j;

struct notifier_ctx *notifier = NULL;

Line 1739

Line 1737

* agent.

if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)

fatal("Cannot load CA public key %s: %s",

fatal_r(r, "Cannot load CA public key %s", tmp);

tmp, ssh_err(r));

if ((r = ssh_get_authentication_socket(&agent_fd)) != 0)

fatal("Cannot use public key for CA signature: %s",

fatal_r(r, "Cannot use public key for CA signature");

ssh_err(r));

if ((r = ssh_fetch_identitylist(agent_fd, &agent_ids)) != 0)

fatal("Retrieve agent key list: %s", ssh_err(r));

fatal_r(r, "Retrieve agent key list");

found = 0;

for (j = 0; j < agent_ids->nkeys; j++) {

if (sshkey_equal(ca, agent_ids->keys[j])) {

Line 1760

Line 1756

} else {

/* CA key is assumed to be a private key on the filesystem */

ca = load_identity(tmp, NULL);

if (sshkey_is_sk(ca) &&

(ca->sk_flags & SSH_SK_USER_VERIFICATION_REQD)) {

if ((pin = read_passphrase("Enter PIN for CA key: ",

RP_ALLOW_STDIN)) == NULL)

fatal_f("couldn't read PIN");

}

free(tmp);

Line 1774

Line 1776

}

ca_fp = sshkey_fingerprint(ca, fingerprint_hash, SSH_FP_DEFAULT);

finalise_cert_exts();

for (i = 0; i < argc; i++) {

/* Split list of principals */

n = 0;

Line 1792

Line 1795

tmp = tilde_expand_filename(argv[i], pw->pw_uid);

if ((r = sshkey_load_public(tmp, &public, &comment)) != 0)

fatal("%s: unable to open \"%s\": %s",

fatal_r(r, "load pubkey \"%s\"", tmp);

__func__, tmp, ssh_err(r));

if (sshkey_is_cert(public))

fatal("%s: key \"%s\" type %s cannot be certified",

fatal_f("key \"%s\" type %s cannot be certified",

__func__, tmp, sshkey_type(public));

tmp, sshkey_type(public));

/* Prepare certificate to sign */

if ((r = sshkey_to_certified(public)) != 0)

fatal("Could not upgrade key %s to certificate: %s",

fatal_r(r, "Could not upgrade key %s to certificate", tmp);

tmp, ssh_err(r));

public->cert->type = cert_key_type;

public->cert->serial = (u_int64_t)cert_serial;

public->cert->key_id = xstrdup(cert_key_id);

Line 1814

Line 1815

OPTIONS_EXTENSIONS);

if ((r = sshkey_from_private(ca,

&public->cert->signature_key)) != 0)

fatal("sshkey_from_private (ca key): %s", ssh_err(r));

fatal_r(r, "sshkey_from_private (ca key)");

if (agent_fd != -1 && (ca->flags & SSHKEY_FLAG_EXT) != 0) {

if ((r = sshkey_certify_custom(public, ca,

key_type_name, sk_provider, agent_signer,

key_type_name, sk_provider, NULL, agent_signer,

&agent_fd)) != 0)

fatal("Couldn't certify key %s via agent: %s",

fatal_r(r, "Couldn't certify %s via agent", tmp);

tmp, ssh_err(r));

} else {

if (sshkey_is_sk(ca) &&

(ca->sk_flags & SSH_SK_USER_PRESENCE_REQD)) {

Line 1830

sshkey_type(ca), ca_fp);

}

r = sshkey_certify(public, ca, key_type_name,

sk_provider);

sk_provider, pin);

notify_complete(notifier);

if (r != 0)

fatal("Couldn't certify key %s: %s",

fatal_r(r, "Couldn't certify key %s", tmp);

tmp, ssh_err(r));

}

if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)

Line 1842

Line 1841

xasprintf(&out, "%s-cert.pub", tmp);

free(tmp);

if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)

if ((r = sshkey_save_public(public, out, comment)) != 0) {

fatal("Could not open \"%s\" for writing: %s", out,

fatal_r(r, "Unable to save public key to %s",

strerror(errno));

identity_file);

if ((f = fdopen(fd, "w")) == NULL)

}

fatal("%s: fdopen: %s", __func__, strerror(errno));

if ((r = sshkey_write(public, f)) != 0)

fatal("Could not write certified key to %s: %s",

out, ssh_err(r));

fprintf(f, " %s\n", comment);

fclose(f);

if (!quiet) {

sshkey_format_cert_validity(public->cert,

Line 1870

Line 1863

if (cert_serial_autoinc)

cert_serial++;

}

if (pin != NULL)

freezero(pin, strlen(pin));

free(ca_fp);

#ifdef ENABLE_PKCS11

pkcs11_terminate();

Line 1994

Line 1989

val = xstrdup(strchr(opt, ':') + 1);

if ((cp = strchr(val, '=')) != NULL)

*cp++ = '\0';

cert_userext = xreallocarray(cert_userext, ncert_userext + 1,

cert_ext_add(val, cp, iscrit);

sizeof(*cert_userext));

free(val);

cert_userext[ncert_userext].key = val;

cert_userext[ncert_userext].val = cp == NULL ?

NULL : xstrdup(cp);

cert_userext[ncert_userext].crit = iscrit;

ncert_userext++;

} else

fatal("Unsupported certificate option \"%s\"", opt);

}

Line 2008

Line 1998

static void

show_options(struct sshbuf *optbuf, int in_critical)

{

char *name, *arg;

char *name, *arg, *hex;

struct sshbuf *options, *option = NULL;

int r;

if ((options = sshbuf_fromb(optbuf)) == NULL)

fatal("%s: sshbuf_fromb failed", __func__);

fatal_f("sshbuf_fromb failed");

while (sshbuf_len(options) != 0) {

sshbuf_free(option);

option = NULL;

if ((r = sshbuf_get_cstring(options, &name, NULL)) != 0 ||

(r = sshbuf_froms(options, &option)) != 0)

fatal("%s: buffer error: %s", __func__, ssh_err(r));

fatal_fr(r, "parse option");

printf(" %s", name);

if (!in_critical &&

(strcmp(name, "permit-X11-forwarding") == 0 ||

Line 2033

Line 2023

(strcmp(name, "force-command") == 0 ||

strcmp(name, "source-address") == 0)) {

if ((r = sshbuf_get_cstring(option, &arg, NULL)) != 0)

fatal("%s: buffer error: %s",

fatal_fr(r, "parse critical");

__func__, ssh_err(r));

printf(" %s\n", arg);

free(arg);

} else {

} else if (sshbuf_len(option) > 0) {

printf(" UNKNOWN OPTION (len %zu)\n",

hex = sshbuf_dtob16(option);

sshbuf_len(option));

printf(" UNKNOWN OPTION: %s (len %zu)\n",

hex, sshbuf_len(option));

sshbuf_reset(option);

}

free(hex);

} else

printf(" UNKNOWN FLAG OPTION\n");

free(name);

if (sshbuf_len(option) != 0)

fatal("Option corrupt: extra data at end");

Line 2060

Line 2052

ca_fp = sshkey_fingerprint(key->cert->signature_key,

fingerprint_hash, SSH_FP_DEFAULT);

if (key_fp == NULL || ca_fp == NULL)

fatal("%s: sshkey_fingerprint fail", __func__);

fatal_f("sshkey_fingerprint fail");

sshkey_format_cert_validity(key->cert, valid, sizeof(valid));

printf(" Type: %s %s certificate\n", sshkey_ssh_name(key),

Line 2133

Line 2125

if ((key = sshkey_new(KEY_UNSPEC)) == NULL)

fatal("sshkey_new");

if ((r = sshkey_read(key, &cp)) != 0) {

error("%s:%lu: invalid key: %s", path,

error_r(r, "%s:%lu: invalid key", path, lnum);

lnum, ssh_err(r));

continue;

}

if (!sshkey_is_cert(key)) {

Line 2161

Line 2152

int r;

if ((r = sshbuf_load_file(path, &krlbuf)) != 0)

fatal("Unable to load KRL: %s", ssh_err(r));

fatal_r(r, "Unable to load KRL %s", path);

/* XXX check sigs */

if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 ||

*krlp == NULL)

fatal("Invalid KRL file: %s", ssh_err(r));

fatal_r(r, "Invalid KRL file %s", path);

sshbuf_free(krlbuf);

}

Line 2194

Line 2185

tmp[tlen] = '\0';

}

if ((b = sshbuf_new()) == NULL)

fatal("%s: sshbuf_new failed", __func__);

fatal_f("sshbuf_new failed");

if ((r = sshbuf_b64tod(b, tmp)) != 0)

fatal("%s:%lu: decode hash failed: %s", file, lnum, ssh_err(r));

fatal_r(r, "%s:%lu: decode hash failed", file, lnum);

free(tmp);

*lenp = sshbuf_len(b);

*blobp = xmalloc(*lenp);

Line 2282

Line 2273

}

if (ssh_krl_revoke_cert_by_serial_range(krl,

ca, serial, serial2) != 0) {

fatal("%s: revoke serial failed",

fatal_f("revoke serial failed");

__func__);

}

} else if (strncasecmp(cp, "id:", 3) == 0) {

if (ca == NULL && !wild_ca) {

Line 2293

Line 2283

cp += 3;

cp = cp + strspn(cp, " \t");

if (ssh_krl_revoke_cert_by_key_id(krl, ca, cp) != 0)

fatal("%s: revoke key ID failed", __func__);

fatal_f("revoke key ID failed");

} else if (strncasecmp(cp, "hash:", 5) == 0) {

cp += 5;

cp = cp + strspn(cp, " \t");

hash_to_blob(cp, &blob, &blen, file, lnum);

r = ssh_krl_revoke_key_sha256(krl, blob, blen);

if (r != 0)

fatal("%s: revoke key failed: %s",

fatal_fr(r, "revoke key failed");

__func__, ssh_err(r));

} else {

if (strncasecmp(cp, "key:", 4) == 0) {

cp += 4;

Line 2323

Line 2312

if ((key = sshkey_new(KEY_UNSPEC)) == NULL)

fatal("sshkey_new");

if ((r = sshkey_read(key, &cp)) != 0)

fatal("%s:%lu: invalid key: %s",

fatal_r(r, "%s:%lu: invalid key", path, lnum);

path, lnum, ssh_err(r));

if (was_explicit_key)

r = ssh_krl_revoke_key_explicit(krl, key);

else if (was_sha1) {

Line 2344

Line 2332

} else

r = ssh_krl_revoke_key(krl, key);

if (r != 0)

fatal("%s: revoke key failed: %s",

fatal_fr(r, "revoke key failed");

__func__, ssh_err(r));

freezero(blob, blen);

blob = NULL;

blen = 0;

Line 2385

Line 2372

else {

tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);

if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)

fatal("Cannot load CA public key %s: %s",

fatal_r(r, "Cannot load CA public key %s", tmp);

tmp, ssh_err(r));

free(tmp);

}

Line 2430

Line 2416

krl_dump(krl, stdout);

for (i = 0; i < argc; i++) {

if ((r = sshkey_load_public(argv[i], &k, &comment)) != 0)

fatal("Cannot load public key %s: %s",

fatal_r(r, "Cannot load public key %s", argv[i]);

argv[i], ssh_err(r));

r = ssh_krl_check_key(krl, k);

printf("%s%s%s%s: %s\n", argv[i],

*comment ? " (" : "", comment, *comment ? ")" : "",

Line 2465

Line 2450

strcmp(privpath + plen - slen, suffixes[i]) != 0)

continue;

privpath[plen - slen] = '\0';

debug("%s: %s looks like a public key, using private key "

debug_f("%s looks like a public key, using private key "

"path %s instead", __func__, keypath, privpath);

"path %s instead", keypath, privpath);

}

if ((privkey = load_identity(privpath, NULL)) == NULL) {

error("Couldn't load identity %s", keypath);

Line 2483

Line 2468

* it capable of signing.

if ((r = sshkey_to_certified(privkey)) != 0) {

error("%s: sshkey_to_certified: %s", __func__,

error_fr(r, "sshkey_to_certified");

ssh_err(r));

goto done;

}

if ((r = sshkey_cert_copy(pubkey, privkey)) != 0) {

error("%s: sshkey_cert_copy: %s", __func__, ssh_err(r));

error_fr(r, "sshkey_cert_copy");

goto done;

}

Line 2508

Line 2492

struct sshbuf *sigbuf = NULL, *abuf = NULL;

int r = SSH_ERR_INTERNAL_ERROR, wfd = -1, oerrno;

char *wfile = NULL, *asig = NULL, *fp = NULL;

char *pin = NULL, *prompt = NULL;

if (!quiet) {

if (fd == STDIN_FILENO)

Line 2515

Line 2500

else

fprintf(stderr, "Signing file %s\n", filename);

}

if (signer == NULL && sshkey_is_sk(signkey) &&

if (signer == NULL && sshkey_is_sk(signkey)) {

(signkey->sk_flags & SSH_SK_USER_PRESENCE_REQD)) {

if ((signkey->sk_flags & SSH_SK_USER_VERIFICATION_REQD)) {

if ((fp = sshkey_fingerprint(signkey, fingerprint_hash,

xasprintf(&prompt, "Enter PIN for %s key: ",

SSH_FP_DEFAULT)) == NULL)

sshkey_type(signkey));

fatal("%s: sshkey_fingerprint failed", __func__);

if ((pin = read_passphrase(prompt,

fprintf(stderr, "Confirm user presence for key %s %s\n",

RP_ALLOW_STDIN)) == NULL)

sshkey_type(signkey), fp);

fatal_f("couldn't read PIN");

free(fp);

}

if ((signkey->sk_flags & SSH_SK_USER_PRESENCE_REQD)) {

if ((fp = sshkey_fingerprint(signkey, fingerprint_hash,

SSH_FP_DEFAULT)) == NULL)

fatal_f("fingerprint failed");

fprintf(stderr, "Confirm user presence for key %s %s\n",

sshkey_type(signkey), fp);

free(fp);

}

if ((r = sshsig_sign_fd(signkey, NULL, sk_provider, fd, sig_namespace,

if ((r = sshsig_sign_fd(signkey, NULL, sk_provider, pin,

&sigbuf, signer, signer_ctx)) != 0) {

fd, sig_namespace, &sigbuf, signer, signer_ctx)) != 0) {

error("Signing %s failed: %s", filename, ssh_err(r));

error_r(r, "Signing %s failed", filename);

goto out;

}

if ((r = sshsig_armor(sigbuf, &abuf)) != 0) {

error("%s: sshsig_armor: %s", __func__, ssh_err(r));

error_fr(r, "sshsig_armor");

goto out;

}

if ((asig = sshbuf_dup_string(abuf)) == NULL) {

error("%s: buffer error", __func__);

error_f("buffer error");

r = SSH_ERR_ALLOC_FAIL;

goto out;

}

Line 2573

Line 2566

r = 0;

out:

free(wfile);

free(prompt);

free(asig);

if (pin != NULL)

freezero(pin, strlen(pin));

sshbuf_free(abuf);

sshbuf_free(sigbuf);

if (wfd != -1)

Line 2598

Line 2594

}

if ((r = sshkey_load_public(keypath, &pubkey, NULL)) != 0) {

error("Couldn't load public key %s: %s", keypath, ssh_err(r));

error_r(r, "Couldn't load public key %s", keypath);

goto done;

}

if ((r = ssh_get_authentication_socket(&agent_fd)) != 0)

debug("Couldn't get agent socket: %s", ssh_err(r));

debug_r(r, "Couldn't get agent socket");

else {

if ((r = ssh_agent_has_key(agent_fd, pubkey)) == 0)

signer = agent_signer;

else

debug("Couldn't find key in agent: %s", ssh_err(r));

debug_r(r, "Couldn't find key in agent");

}

if (signer == NULL) {

Line 2664

Line 2660

memset(&sig_details, 0, sizeof(sig_details));

if ((r = sshbuf_load_file(signature, &abuf)) != 0) {

error("Couldn't read signature file: %s", ssh_err(r));

error_r(r, "Couldn't read signature file");

goto done;

}

if ((r = sshsig_dearmor(abuf, &sigbuf)) != 0) {

error("%s: sshsig_armor: %s", __func__, ssh_err(r));

error_fr(r, "sshsig_armor");

goto done;

}

if ((r = sshsig_verify_fd(sigbuf, STDIN_FILENO, sig_namespace,

Line 2678

Line 2674

if ((fp = sshkey_fingerprint(sign_key, fingerprint_hash,

SSH_FP_DEFAULT)) == NULL)

fatal("%s: sshkey_fingerprint failed", __func__);

fatal_f("sshkey_fingerprint failed");

debug("Valid (unverified) signature from key %s", fp);

if (sig_details != NULL) {

debug2("%s: signature details: counter = %u, flags = 0x%02x",

debug2_f("signature details: counter = %u, flags = 0x%02x",

__func__, sig_details->sk_counter, sig_details->sk_flags);

sig_details->sk_counter, sig_details->sk_flags);

}

free(fp);

fp = NULL;

if (revoked_keys != NULL) {

if ((r = sshkey_check_revoked(sign_key, revoked_keys)) != 0) {

debug3("sshkey_check_revoked failed: %s", ssh_err(r));

debug3_fr(r, "sshkey_check_revoked");

goto done;

}

if (allowed_keys != NULL &&

if (allowed_keys != NULL && (r = sshsig_check_allowed_keys(allowed_keys,

(r = sshsig_check_allowed_keys(allowed_keys, sign_key,

sign_key, principal, sig_namespace)) != 0) {

principal, sig_namespace)) != 0) {

debug3_fr(r, "sshsig_check_allowed_keys");

debug3("sshsig_check_allowed_keys failed: %s", ssh_err(r));

goto done;

}

/* success */

Line 2706

Line 2701

if (!quiet) {

if (ret == 0) {

if ((fp = sshkey_fingerprint(sign_key, fingerprint_hash,

SSH_FP_DEFAULT)) == NULL) {

SSH_FP_DEFAULT)) == NULL)

fatal("%s: sshkey_fingerprint failed",

fatal_f("sshkey_fingerprint failed");

__func__);

}

if (principal == NULL) {

printf("Good \"%s\" signature with %s key %s\n",

sig_namespace, sshkey_type(sign_key), fp);

Line 2739

Line 2732

char *principals = NULL, *cp, *tmp;

if ((r = sshbuf_load_file(signature, &abuf)) != 0) {

error("Couldn't read signature file: %s", ssh_err(r));

error_r(r, "Couldn't read signature file");

goto done;

}

if ((r = sshsig_dearmor(abuf, &sigbuf)) != 0) {

error("%s: sshsig_armor: %s", __func__, ssh_err(r));

error_fr(r, "sshsig_armor");

goto done;

}

if ((r = sshsig_get_pubkey(sigbuf, &sign_key)) != 0) {

error("%s: sshsig_get_pubkey: %s",

error_fr(r, "sshsig_get_pubkey");

__func__, ssh_err(r));

goto done;

}

if ((r = sshsig_find_principals(allowed_keys, sign_key,

&principals)) != 0) {

error("%s: sshsig_get_principal: %s",

error_fr(r, "sshsig_get_principal");

__func__, ssh_err(r));

goto done;

}

ret = 0;

Line 2938

Line 2929

{

struct sshkey **keys;

size_t nkeys, i;

int r, ok = -1;

int r, ret = -1;

char *fp, *pin = NULL, *pass = NULL, *path, *pubpath;

const char *ext;

if (skprovider == NULL)

fatal("Cannot download keys without provider");

for (i = 0; i < 2; i++) {

pin = read_passphrase("Enter PIN for authenticator: ", RP_ALLOW_STDIN);

if (i == 1) {

if (!quiet) {

pin = read_passphrase("Enter PIN for authenticator: ",

printf("You may need to touch your authenticator "

RP_ALLOW_STDIN);

"to authorize key download.\n");

}

if ((r = sshsk_load_resident(skprovider, device, pin,

&keys, &nkeys)) != 0) {

if (i == 0 && r == SSH_ERR_KEY_WRONG_PASSPHRASE)

if (pin != NULL)

continue;

freezero(pin, strlen(pin));

error("Unable to load resident keys: %s", ssh_err(r));

error_r(r, "Unable to load resident keys");

return -1;

}

if (nkeys == 0)

logit("No keys to download");

freezero(pin, strlen(pin));

if (pin != NULL)

freezero(pin, strlen(pin));

for (i = 0; i < nkeys; i++) {

if (keys[i]->type != KEY_ECDSA_SK &&

Line 2972

Line 2962

}

if ((fp = sshkey_fingerprint(keys[i],

fingerprint_hash, SSH_FP_DEFAULT)) == NULL)

fatal("%s: sshkey_fingerprint failed", __func__);

fatal_f("sshkey_fingerprint failed");

debug("%s: key %zu: %s %s %s (flags 0x%02x)", __func__, i,

debug_f("key %zu: %s %s %s (flags 0x%02x)", i,

sshkey_type(keys[i]), fp, keys[i]->sk_application,

keys[i]->sk_flags);

ext = skip_ssh_url_preamble(keys[i]->sk_application);

Line 2993

Line 2983

if ((r = sshkey_save_private(keys[i], path, pass,

keys[i]->sk_application, private_key_format,

openssh_format_cipher, rounds)) != 0) {

error("Saving key \"%s\" failed: %s",

error_r(r, "Saving key \"%s\" failed", path);

path, ssh_err(r));

free(path);

break;

}

Line 3011

Line 3000

free(path);

if ((r = sshkey_save_public(keys[i], pubpath,

keys[i]->sk_application)) != 0) {

error("Saving public key \"%s\" failed: %s",

error_r(r, "Saving public key \"%s\" failed", pubpath);

pubpath, ssh_err(r));

free(pubpath);

break;

}

Line 3020

Line 3008

}

if (i >= nkeys)

ok = 0; /* success */

ret = 0; /* success */

if (pass != NULL)

freezero(pass, strlen(pass));

for (i = 0; i < nkeys; i++)

sshkey_free(keys[i]);

free(keys);

return ok ? 0 : -1;

return ret;

}

static void

save_attestation(struct sshbuf *attest, const char *path)

{

mode_t omask;

int r;

if (path == NULL)

return; /* nothing to do */

if (attest == NULL || sshbuf_len(attest) == 0)

fatal("Enrollment did not return attestation data");

omask = umask(077);

r = sshbuf_write_file(path, attest);

umask(omask);

if (r != 0)

fatal_r(r, "Unable to write attestation data \"%s\"", path);

if (!quiet)

printf("Your FIDO attestation certificate has been saved in "

"%s\n", path);

}

static void

usage(void)

{

fprintf(stderr,

"usage: ssh-keygen [-q] [-b bits] [-C comment] [-f output_keyfile] [-m format]\n"

"usage: ssh-keygen [-q] [-a rounds] [-b bits] [-C comment] [-f output_keyfile]\n"

" [-m format] [-N new_passphrase] [-O option]\n"

" [-N new_passphrase] [-O option] [-w provider]\n"

" [-w provider]\n"

" ssh-keygen -p [-f keyfile] [-m format] [-N new_passphrase]\n"

" ssh-keygen -p [-a rounds] [-f keyfile] [-m format] [-N new_passphrase]\n"

" [-P old_passphrase]\n"

" ssh-keygen -i [-f input_keyfile] [-m key_format]\n"

" ssh-keygen -e [-f input_keyfile] [-m key_format]\n"

" ssh-keygen -y [-f input_keyfile]\n"

" ssh-keygen -c [-C comment] [-f keyfile] [-P passphrase]\n"

" ssh-keygen -c [-a rounds] [-C comment] [-f keyfile] [-P passphrase]\n"

" ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]\n"

" ssh-keygen -B [-f input_keyfile]\n");

#ifdef ENABLE_PKCS11

Line 3051

Line 3060

fprintf(stderr,

" ssh-keygen -F hostname [-lv] [-f known_hosts_file]\n"

" ssh-keygen -H [-f known_hosts_file]\n"

" ssh-keygen -K [-w provider]\n"

" ssh-keygen -K [-a rounds] [-w provider]\n"

" ssh-keygen -R hostname [-f known_hosts_file]\n"

" ssh-keygen -r hostname [-g] [-f input_keyfile]\n"

#ifdef WITH_OPENSSL

Line 3062

Line 3071

" [-n principals] [-O option] [-V validity_interval]\n"

" [-z serial_number] file ...\n"

" ssh-keygen -L [-f input_keyfile]\n"

" ssh-keygen -A [-f prefix_path]\n"

" ssh-keygen -A [-a rounds] [-f prefix_path]\n"

" ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n"

" file ...\n"

" ssh-keygen -Q [-l] -f krl_file [file ...]\n"

Line 3080

Line 3089

int

main(int argc, char **argv)

{

char dotsshdir[PATH_MAX], comment[1024], *passphrase;

char comment[1024], *passphrase;

char *rr_hostname = NULL, *ep, *fp, *ra;

struct sshkey *private, *public;

struct passwd *pw;

struct stat st;

int r, opt, type;

int change_passphrase = 0, change_comment = 0, show_cert = 0;

int find_host = 0, delete_host = 0, hash_hosts = 0;

Line 3095

Line 3103

unsigned long long cert_serial = 0;

char *identity_comment = NULL, *ca_key_path = NULL, **opts = NULL;

char *sk_application = NULL, *sk_device = NULL, *sk_user = NULL;

char *sk_attestaion_path = NULL;

char *sk_attestation_path = NULL;

struct sshbuf *challenge = NULL, *attest = NULL;

size_t i, nopts = 0;

u_int32_t bits = 0;

Line 3531

Line 3539

for (i = 0; i < nopts; i++) {

if (strcasecmp(opts[i], "no-touch-required") == 0) {

sk_flags &= ~SSH_SK_USER_PRESENCE_REQD;

} else if (strcasecmp(opts[i], "verify-required") == 0) {

sk_flags |= SSH_SK_USER_VERIFICATION_REQD;

} else if (strcasecmp(opts[i], "resident") == 0) {

sk_flags |= SSH_SK_RESIDENT_KEY;

} else if (strncasecmp(opts[i], "device=", 7) == 0) {

Line 3540

Line 3550

} else if (strncasecmp(opts[i], "challenge=", 10) == 0) {

if ((r = sshbuf_load_file(opts[i] + 10,

&challenge)) != 0) {

fatal("Unable to load FIDO enrollment "

fatal_r(r, "Unable to load FIDO "

"challenge \"%s\": %s",

"enrollment challenge \"%s\"",

opts[i] + 10, ssh_err(r));

opts[i] + 10);

}

} else if (strncasecmp(opts[i],

"write-attestation=", 18) == 0) {

sk_attestaion_path = opts[i] + 18;

sk_attestation_path = opts[i] + 18;

} else if (strncasecmp(opts[i],

"application=", 12) == 0) {

sk_application = xstrdup(opts[i] + 12);

Line 3563

Line 3573

printf("You may need to touch your authenticator "

"to authorize key generation.\n");

}

passphrase = NULL;

if ((attest = sshbuf_new()) == NULL)

fatal("sshbuf_new failed");

if ((sk_flags &

(SSH_SK_USER_VERIFICATION_REQD|SSH_SK_RESIDENT_KEY))) {

passphrase = read_passphrase("Enter PIN for "

"authenticator: ", RP_ALLOW_STDIN);

} else {

passphrase = NULL;

}

for (i = 0 ; ; i++) {

fflush(stdout);

r = sshsk_enroll(type, sk_provider, sk_device,

Line 3575

Line 3591

if (r == 0)

break;

if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)

fatal("Key enrollment failed: %s", ssh_err(r));

fatal_r(r, "Key enrollment failed");

else if (i > 0)

else if (passphrase != NULL) {

error("PIN incorrect");

if (passphrase != NULL) {

freezero(passphrase, strlen(passphrase));

passphrase = NULL;

}

Line 3586

Line 3601

fatal("Too many incorrect PINs");

passphrase = read_passphrase("Enter PIN for "

"authenticator: ", RP_ALLOW_STDIN);

if (!quiet) {

printf("You may need to touch your "

"authenticator (again) to authorize "

"key generation.\n");

}

if (passphrase != NULL) {

freezero(passphrase, strlen(passphrase));

Line 3598

Line 3618

break;

}

if ((r = sshkey_from_private(private, &public)) != 0)

fatal("sshkey_from_private failed: %s\n", ssh_err(r));

fatal_r(r, "sshkey_from_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",

hostfile_create_user_ssh_dir(identity_file, !quiet);

pw->pw_dir, _PATH_SSH_USER_DIR);

if (strstr(identity_file, dotsshdir) != NULL) {

if (stat(dotsshdir, &st) == -1) {

if (errno != ENOENT) {

error("Could not stat %s: %s", dotsshdir,

strerror(errno));

} else if (mkdir(dotsshdir, 0700) == -1) {

error("Could not create directory '%s': %s",

dotsshdir, strerror(errno));

} else if (!quiet)

printf("Created directory '%s'.\n", dotsshdir);

}

/* If the file already exists, ask the user to confirm. */

if (!confirm_overwrite(identity_file))

exit(1);

Line 3634

Line 3642

/* Save the key with the given passphrase and comment. */

if ((r = sshkey_save_private(private, identity_file, passphrase,

comment, private_key_format, openssh_format_cipher, rounds)) != 0) {

error("Saving key \"%s\" failed: %s",

error_r(r, "Saving key \"%s\" failed", identity_file);

identity_file, ssh_err(r));

freezero(passphrase, strlen(passphrase));

exit(1);

}

Line 3648

Line 3655

}

strlcat(identity_file, ".pub", sizeof(identity_file));

if ((r = sshkey_save_public(public, identity_file, comment)) != 0) {

if ((r = sshkey_save_public(public, identity_file, comment)) != 0)

fatal("Unable to save public key to %s: %s",

fatal_r(r, "Unable to save public key to %s", identity_file);

identity_file, strerror(errno));

}

if (!quiet) {

fp = sshkey_fingerprint(public, fingerprint_hash,

Line 3670

Line 3675

free(fp);

}

if (sk_attestaion_path != NULL) {

if (sk_attestation_path != NULL)

if (attest == NULL || sshbuf_len(attest) == 0) {

save_attestation(attest, sk_attestation_path);

fatal("Enrollment did not return attestation "

"certificate");

}

if ((r = sshbuf_write_file(sk_attestaion_path, attest)) != 0) {

fatal("Unable to write attestation certificate "

"\"%s\": %s", sk_attestaion_path, ssh_err(r));

}

if (!quiet) {

printf("Your FIDO attestation certificate has been "

"saved in %s\n", sk_attestaion_path);

}

sshbuf_free(attest);

sshkey_free(public);