version 1.374, 2019/12/10 22:37:20 |
version 1.393, 2020/01/25 23:02:13 |
|
|
/* Cipher for new-format private keys */ |
/* Cipher for new-format private keys */ |
static char *openssh_format_cipher = NULL; |
static char *openssh_format_cipher = NULL; |
|
|
/* |
/* Number of KDF rounds to derive new format keys. */ |
* Number of KDF rounds to derive new format keys / |
|
* number of primality trials when screening moduli. |
|
*/ |
|
static int rounds = 0; |
static int rounds = 0; |
|
|
/* argv0 */ |
/* argv0 */ |
|
|
if (!PEM_write_RSAPublicKey(stdout, k->rsa)) |
if (!PEM_write_RSAPublicKey(stdout, k->rsa)) |
fatal("PEM_write_RSAPublicKey failed"); |
fatal("PEM_write_RSAPublicKey failed"); |
break; |
break; |
|
case KEY_DSA: |
|
if (!PEM_write_DSA_PUBKEY(stdout, k->dsa)) |
|
fatal("PEM_write_DSA_PUBKEY failed"); |
|
break; |
|
case KEY_ECDSA: |
|
if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa)) |
|
fatal("PEM_write_EC_PUBKEY failed"); |
|
break; |
default: |
default: |
fatal("%s: unsupported key type %s", __func__, sshkey_type(k)); |
fatal("%s: unsupported key type %s", __func__, sshkey_type(k)); |
} |
} |
|
|
int i, nkeys; |
int i, nkeys; |
enum sshkey_fp_rep rep; |
enum sshkey_fp_rep rep; |
int fptype; |
int fptype; |
char *fp, *ra; |
char *fp, *ra, **comments = NULL; |
|
|
fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash; |
fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash; |
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT; |
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT; |
|
|
pkcs11_init(1); |
pkcs11_init(1); |
nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys); |
nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys, &comments); |
if (nkeys <= 0) |
if (nkeys <= 0) |
fatal("cannot read public key from pkcs11"); |
fatal("cannot read public key from pkcs11"); |
for (i = 0; i < nkeys; i++) { |
for (i = 0; i < nkeys; i++) { |
|
|
free(fp); |
free(fp); |
} else { |
} else { |
(void) sshkey_write(keys[i], stdout); /* XXX check */ |
(void) sshkey_write(keys[i], stdout); /* XXX check */ |
fprintf(stdout, "\n"); |
fprintf(stdout, "%s%s\n", |
|
*(comments[i]) == '\0' ? "" : " ", comments[i]); |
} |
} |
|
free(comments[i]); |
sshkey_free(keys[i]); |
sshkey_free(keys[i]); |
} |
} |
|
free(comments); |
free(keys); |
free(keys); |
pkcs11_terminate(); |
pkcs11_terminate(); |
exit(0); |
exit(0); |
|
|
if (fp == NULL || ra == NULL) |
if (fp == NULL || ra == NULL) |
fatal("%s: sshkey_fingerprint failed", |
fatal("%s: sshkey_fingerprint failed", |
__func__); |
__func__); |
mprintf("%s %s %s %s\n", ctx->host, |
mprintf("%s %s %s%s%s\n", ctx->host, |
sshkey_type(l->key), fp, l->comment); |
sshkey_type(l->key), fp, |
|
l->comment[0] ? " " : "", |
|
l->comment); |
if (log_level_get() >= SYSLOG_LEVEL_VERBOSE) |
if (log_level_get() >= SYSLOG_LEVEL_VERBOSE) |
printf("%s\n", ra); |
printf("%s\n", ra); |
free(ra); |
free(ra); |
|
|
fatal("Couldn't load CA public key \"%s\": %s", |
fatal("Couldn't load CA public key \"%s\": %s", |
path, ssh_err(r)); |
path, ssh_err(r)); |
|
|
nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys); |
nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, |
|
&keys, NULL); |
debug3("%s: %d keys", __func__, nkeys); |
debug3("%s: %d keys", __func__, nkeys); |
if (nkeys <= 0) |
if (nkeys <= 0) |
fatal("cannot read public key from pkcs11"); |
fatal("cannot read public key from pkcs11"); |
|
|
} |
} |
free(tmp); |
free(tmp); |
|
|
if (key_type_name != NULL && |
if (key_type_name != NULL) { |
sshkey_type_from_name(key_type_name) != ca->type) { |
if (sshkey_type_from_name(key_type_name) != ca->type) { |
fatal("CA key type %s doesn't match specified %s", |
fatal("CA key type %s doesn't match specified %s", |
sshkey_ssh_name(ca), key_type_name); |
sshkey_ssh_name(ca), key_type_name); |
|
} |
|
} else if (ca->type == KEY_RSA) { |
|
/* Default to a good signature algorithm */ |
|
key_type_name = "rsa-sha2-512"; |
} |
} |
ca_fp = sshkey_fingerprint(ca, fingerprint_hash, SSH_FP_DEFAULT); |
ca_fp = sshkey_fingerprint(ca, fingerprint_hash, SSH_FP_DEFAULT); |
|
|
|
|
exit(ok ? 0 : 1); |
exit(ok ? 0 : 1); |
} |
} |
|
|
#ifdef WITH_OPENSSL |
|
static void |
static void |
load_krl(const char *path, struct ssh_krl **krlp) |
load_krl(const char *path, struct ssh_krl **krlp) |
{ |
{ |
struct sshbuf *krlbuf; |
struct sshbuf *krlbuf; |
int r, fd; |
int r; |
|
|
if ((krlbuf = sshbuf_new()) == NULL) |
if ((r = sshbuf_load_file(path, &krlbuf)) != 0) |
fatal("sshbuf_new failed"); |
|
if ((fd = open(path, O_RDONLY)) == -1) |
|
fatal("open %s: %s", path, strerror(errno)); |
|
if ((r = sshkey_load_file(fd, krlbuf)) != 0) |
|
fatal("Unable to load KRL: %s", ssh_err(r)); |
fatal("Unable to load KRL: %s", ssh_err(r)); |
close(fd); |
|
/* XXX check sigs */ |
/* XXX check sigs */ |
if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 || |
if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 || |
*krlp == NULL) |
*krlp == NULL) |
|
|
struct ssh_krl *krl; |
struct ssh_krl *krl; |
struct stat sb; |
struct stat sb; |
struct sshkey *ca = NULL; |
struct sshkey *ca = NULL; |
int fd, i, r, wild_ca = 0; |
int i, r, wild_ca = 0; |
char *tmp; |
char *tmp; |
struct sshbuf *kbuf; |
struct sshbuf *kbuf; |
|
|
|
|
fatal("sshbuf_new failed"); |
fatal("sshbuf_new failed"); |
if (ssh_krl_to_blob(krl, kbuf, NULL, 0) != 0) |
if (ssh_krl_to_blob(krl, kbuf, NULL, 0) != 0) |
fatal("Couldn't generate KRL"); |
fatal("Couldn't generate KRL"); |
if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1) |
if ((r = sshbuf_write_file(identity_file, kbuf)) != 0) |
fatal("open %s: %s", identity_file, strerror(errno)); |
|
if (atomicio(vwrite, fd, sshbuf_mutable_ptr(kbuf), sshbuf_len(kbuf)) != |
|
sshbuf_len(kbuf)) |
|
fatal("write %s: %s", identity_file, strerror(errno)); |
fatal("write %s: %s", identity_file, strerror(errno)); |
close(fd); |
|
sshbuf_free(kbuf); |
sshbuf_free(kbuf); |
ssh_krl_free(krl); |
ssh_krl_free(krl); |
sshkey_free(ca); |
sshkey_free(ca); |
|
|
ssh_krl_free(krl); |
ssh_krl_free(krl); |
exit(ret); |
exit(ret); |
} |
} |
#endif |
|
|
|
static struct sshkey * |
static struct sshkey * |
load_sign_key(const char *keypath, const struct sshkey *pubkey) |
load_sign_key(const char *keypath, const struct sshkey *pubkey) |
|
|
} |
} |
|
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static int |
static int |
sign(const char *keypath, const char *sig_namespace, int argc, char **argv) |
sig_sign(const char *keypath, const char *sig_namespace, int argc, char **argv) |
{ |
{ |
int i, fd = -1, r, ret = -1; |
int i, fd = -1, r, ret = -1; |
int agent_fd = -1; |
int agent_fd = -1; |
|
|
} |
} |
|
|
static int |
static int |
verify(const char *signature, const char *sig_namespace, const char *principal, |
sig_verify(const char *signature, const char *sig_namespace, |
const char *allowed_keys, const char *revoked_keys) |
const char *principal, const char *allowed_keys, const char *revoked_keys) |
{ |
{ |
int r, ret = -1, sigfd = -1; |
int r, ret = -1; |
struct sshbuf *sigbuf = NULL, *abuf = NULL; |
struct sshbuf *sigbuf = NULL, *abuf = NULL; |
struct sshkey *sign_key = NULL; |
struct sshkey *sign_key = NULL; |
char *fp = NULL; |
char *fp = NULL; |
struct sshkey_sig_details *sig_details = NULL; |
struct sshkey_sig_details *sig_details = NULL; |
|
|
memset(&sig_details, 0, sizeof(sig_details)); |
memset(&sig_details, 0, sizeof(sig_details)); |
if ((abuf = sshbuf_new()) == NULL) |
if ((r = sshbuf_load_file(signature, &abuf)) != 0) { |
fatal("%s: sshbuf_new() failed", __func__); |
|
|
|
if ((sigfd = open(signature, O_RDONLY)) < 0) { |
|
error("Couldn't open signature file %s", signature); |
|
goto done; |
|
} |
|
|
|
if ((r = sshkey_load_file(sigfd, abuf)) != 0) { |
|
error("Couldn't read signature file: %s", ssh_err(r)); |
error("Couldn't read signature file: %s", ssh_err(r)); |
goto done; |
goto done; |
} |
} |
|
|
if ((r = sshsig_dearmor(abuf, &sigbuf)) != 0) { |
if ((r = sshsig_dearmor(abuf, &sigbuf)) != 0) { |
error("%s: sshsig_armor: %s", __func__, ssh_err(r)); |
error("%s: sshsig_armor: %s", __func__, ssh_err(r)); |
return r; |
goto done; |
} |
} |
if ((r = sshsig_verify_fd(sigbuf, STDIN_FILENO, sig_namespace, |
if ((r = sshsig_verify_fd(sigbuf, STDIN_FILENO, sig_namespace, |
&sign_key, &sig_details)) != 0) |
&sign_key, &sig_details)) != 0) |
|
|
printf("Could not verify signature.\n"); |
printf("Could not verify signature.\n"); |
} |
} |
} |
} |
if (sigfd != -1) |
|
close(sigfd); |
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sshbuf_free(sigbuf); |
sshbuf_free(sigbuf); |
sshbuf_free(abuf); |
sshbuf_free(abuf); |
sshkey_free(sign_key); |
sshkey_free(sign_key); |
|
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return ret; |
return ret; |
} |
} |
|
|
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static int |
|
sig_find_principals(const char *signature, const char *allowed_keys) { |
|
int r, ret = -1; |
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struct sshbuf *sigbuf = NULL, *abuf = NULL; |
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struct sshkey *sign_key = NULL; |
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char *principals = NULL, *cp, *tmp; |
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|
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if ((r = sshbuf_load_file(signature, &abuf)) != 0) { |
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error("Couldn't read signature file: %s", ssh_err(r)); |
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goto done; |
|
} |
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if ((r = sshsig_dearmor(abuf, &sigbuf)) != 0) { |
|
error("%s: sshsig_armor: %s", __func__, ssh_err(r)); |
|
goto done; |
|
} |
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if ((r = sshsig_get_pubkey(sigbuf, &sign_key)) != 0) { |
|
error("%s: sshsig_get_pubkey: %s", |
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__func__, ssh_err(r)); |
|
goto done; |
|
} |
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if ((r = sshsig_find_principals(allowed_keys, sign_key, |
|
&principals)) != 0) { |
|
error("%s: sshsig_get_principal: %s", |
|
__func__, ssh_err(r)); |
|
goto done; |
|
} |
|
ret = 0; |
|
done: |
|
if (ret == 0 ) { |
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/* Emit matching principals one per line */ |
|
tmp = principals; |
|
while ((cp = strsep(&tmp, ",")) != NULL && *cp != '\0') |
|
puts(cp); |
|
} else { |
|
fprintf(stderr, "No principal matched.\n"); |
|
} |
|
sshbuf_free(sigbuf); |
|
sshbuf_free(abuf); |
|
sshkey_free(sign_key); |
|
free(principals); |
|
return ret; |
|
} |
|
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static void |
static void |
|
do_moduli_gen(const char *out_file, char **opts, size_t nopts) |
|
{ |
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#ifdef WITH_OPENSSL |
|
/* Moduli generation/screening */ |
|
u_int32_t memory = 0; |
|
BIGNUM *start = NULL; |
|
int moduli_bits = 0; |
|
FILE *out; |
|
size_t i; |
|
const char *errstr; |
|
|
|
/* Parse options */ |
|
for (i = 0; i < nopts; i++) { |
|
if (strncmp(opts[i], "memory=", 7) == 0) { |
|
memory = (u_int32_t)strtonum(opts[i]+7, 1, |
|
UINT_MAX, &errstr); |
|
if (errstr) { |
|
fatal("Memory limit is %s: %s", |
|
errstr, opts[i]+7); |
|
} |
|
} else if (strncmp(opts[i], "start=", 6) == 0) { |
|
/* XXX - also compare length against bits */ |
|
if (BN_hex2bn(&start, opts[i]+6) == 0) |
|
fatal("Invalid start point."); |
|
} else if (strncmp(opts[i], "bits=", 5) == 0) { |
|
moduli_bits = (int)strtonum(opts[i]+5, 1, |
|
INT_MAX, &errstr); |
|
if (errstr) { |
|
fatal("Invalid number: %s (%s)", |
|
opts[i]+12, errstr); |
|
} |
|
} else { |
|
fatal("Option \"%s\" is unsupported for moduli " |
|
"generation", opts[i]); |
|
} |
|
} |
|
|
|
if ((out = fopen(out_file, "w")) == NULL) { |
|
fatal("Couldn't open modulus candidate file \"%s\": %s", |
|
out_file, strerror(errno)); |
|
} |
|
setvbuf(out, NULL, _IOLBF, 0); |
|
|
|
if (moduli_bits == 0) |
|
moduli_bits = DEFAULT_BITS; |
|
if (gen_candidates(out, memory, moduli_bits, start) != 0) |
|
fatal("modulus candidate generation failed"); |
|
#else /* WITH_OPENSSL */ |
|
fatal("Moduli generation is not supported"); |
|
#endif /* WITH_OPENSSL */ |
|
} |
|
|
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static void |
|
do_moduli_screen(const char *out_file, char **opts, size_t nopts) |
|
{ |
|
#ifdef WITH_OPENSSL |
|
/* Moduli generation/screening */ |
|
char *checkpoint = NULL; |
|
u_int32_t generator_wanted = 0; |
|
unsigned long start_lineno = 0, lines_to_process = 0; |
|
int prime_tests = 0; |
|
FILE *out, *in = stdin; |
|
size_t i; |
|
const char *errstr; |
|
|
|
/* Parse options */ |
|
for (i = 0; i < nopts; i++) { |
|
if (strncmp(opts[i], "lines=", 6) == 0) { |
|
lines_to_process = strtoul(opts[i]+6, NULL, 10); |
|
} else if (strncmp(opts[i], "start-line=", 11) == 0) { |
|
start_lineno = strtoul(opts[i]+11, NULL, 10); |
|
} else if (strncmp(opts[i], "checkpoint=", 11) == 0) { |
|
checkpoint = xstrdup(opts[i]+11); |
|
} else if (strncmp(opts[i], "generator=", 10) == 0) { |
|
generator_wanted = (u_int32_t)strtonum( |
|
opts[i]+10, 1, UINT_MAX, &errstr); |
|
if (errstr != NULL) { |
|
fatal("Generator invalid: %s (%s)", |
|
opts[i]+10, errstr); |
|
} |
|
} else if (strncmp(opts[i], "prime-tests=", 12) == 0) { |
|
prime_tests = (int)strtonum(opts[i]+12, 1, |
|
INT_MAX, &errstr); |
|
if (errstr) { |
|
fatal("Invalid number: %s (%s)", |
|
opts[i]+12, errstr); |
|
} |
|
} else { |
|
fatal("Option \"%s\" is unsupported for moduli " |
|
"screening", opts[i]); |
|
} |
|
} |
|
|
|
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)); |
|
} |
|
} |
|
|
|
if ((out = fopen(out_file, "a")) == NULL) { |
|
fatal("Couldn't open moduli file \"%s\": %s", |
|
out_file, strerror(errno)); |
|
} |
|
setvbuf(out, NULL, _IOLBF, 0); |
|
if (prime_test(in, out, prime_tests == 0 ? 100 : prime_tests, |
|
generator_wanted, checkpoint, |
|
start_lineno, lines_to_process) != 0) |
|
fatal("modulus screening failed"); |
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#else /* WITH_OPENSSL */ |
|
fatal("Moduli screening is not supported"); |
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#endif /* WITH_OPENSSL */ |
|
} |
|
|
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static char * |
|
private_key_passphrase(void) |
|
{ |
|
char *passphrase1, *passphrase2; |
|
|
|
/* Ask for a passphrase (twice). */ |
|
if (identity_passphrase) |
|
passphrase1 = xstrdup(identity_passphrase); |
|
else if (identity_new_passphrase) |
|
passphrase1 = xstrdup(identity_new_passphrase); |
|
else { |
|
passphrase_again: |
|
passphrase1 = |
|
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. |
|
*/ |
|
freezero(passphrase1, strlen(passphrase1)); |
|
freezero(passphrase2, strlen(passphrase2)); |
|
printf("Passphrases do not match. Try again.\n"); |
|
goto passphrase_again; |
|
} |
|
/* Clear the other copy of the passphrase. */ |
|
freezero(passphrase2, strlen(passphrase2)); |
|
} |
|
return passphrase1; |
|
} |
|
|
|
static const char * |
|
skip_ssh_url_preamble(const char *s) |
|
{ |
|
if (strncmp(s, "ssh://", 6) == 0) |
|
return s + 6; |
|
else if (strncmp(s, "ssh:", 4) == 0) |
|
return s + 4; |
|
return s; |
|
} |
|
|
|
static int |
|
do_download_sk(const char *skprovider, const char *device) |
|
{ |
|
struct sshkey **keys; |
|
size_t nkeys, i; |
|
int r, ok = -1; |
|
char *fp, *pin, *pass = NULL, *path, *pubpath; |
|
const char *ext; |
|
|
|
if (skprovider == NULL) |
|
fatal("Cannot download keys without provider"); |
|
|
|
pin = read_passphrase("Enter PIN for security key: ", RP_ALLOW_STDIN); |
|
if ((r = sshsk_load_resident(skprovider, device, pin, |
|
&keys, &nkeys)) != 0) { |
|
freezero(pin, strlen(pin)); |
|
error("Unable to load resident keys: %s", ssh_err(r)); |
|
return -1; |
|
} |
|
if (nkeys == 0) |
|
logit("No keys to download"); |
|
freezero(pin, strlen(pin)); |
|
|
|
for (i = 0; i < nkeys; i++) { |
|
if (keys[i]->type != KEY_ECDSA_SK && |
|
keys[i]->type != KEY_ED25519_SK) { |
|
error("Unsupported key type %s (%d)", |
|
sshkey_type(keys[i]), keys[i]->type); |
|
continue; |
|
} |
|
if ((fp = sshkey_fingerprint(keys[i], |
|
fingerprint_hash, SSH_FP_DEFAULT)) == NULL) |
|
fatal("%s: sshkey_fingerprint failed", __func__); |
|
debug("%s: key %zu: %s %s %s (flags 0x%02x)", __func__, i, |
|
sshkey_type(keys[i]), fp, keys[i]->sk_application, |
|
keys[i]->sk_flags); |
|
ext = skip_ssh_url_preamble(keys[i]->sk_application); |
|
xasprintf(&path, "id_%s_rk%s%s", |
|
keys[i]->type == KEY_ECDSA_SK ? "ecdsa_sk" : "ed25519_sk", |
|
*ext == '\0' ? "" : "_", ext); |
|
|
|
/* If the file already exists, ask the user to confirm. */ |
|
if (!confirm_overwrite(path)) { |
|
free(path); |
|
break; |
|
} |
|
|
|
/* Save the key with the application string as the comment */ |
|
if (pass == NULL) |
|
pass = private_key_passphrase(); |
|
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", |
|
path, ssh_err(r)); |
|
free(path); |
|
break; |
|
} |
|
if (!quiet) { |
|
printf("Saved %s key%s%s to %s\n", |
|
sshkey_type(keys[i]), |
|
*ext != '\0' ? " " : "", |
|
*ext != '\0' ? keys[i]->sk_application : "", |
|
path); |
|
} |
|
|
|
/* Save public key too */ |
|
xasprintf(&pubpath, "%s.pub", path); |
|
free(path); |
|
if ((r = sshkey_save_public(keys[i], pubpath, |
|
keys[i]->sk_application)) != 0) { |
|
free(pubpath); |
|
error("Saving public key \"%s\" failed: %s", |
|
pubpath, ssh_err(r)); |
|
break; |
|
} |
|
free(pubpath); |
|
} |
|
|
|
if (i >= nkeys) |
|
ok = 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; |
|
} |
|
|
|
static void |
usage(void) |
usage(void) |
{ |
{ |
fprintf(stderr, |
fprintf(stderr, |
"usage: ssh-keygen [-q] [-b bits] [-C comment] [-f output_keyfile] [-m format]\n" |
"usage: ssh-keygen [-q] [-b bits] [-C comment] [-f output_keyfile] [-m format]\n" |
" [-t dsa | ecdsa | ecdsa-sk | ed25519 | ed25519-sk | rsa]\n" |
" [-t dsa | ecdsa | ecdsa-sk | ed25519 | ed25519-sk | rsa]\n" |
" [-N new_passphrase] [-w provider] [-x flags]\n" |
" [-N new_passphrase] [-O option] [-w provider]\n" |
" ssh-keygen -p [-f keyfile] [-m format] [-N new_passphrase]\n" |
" ssh-keygen -p [-f keyfile] [-m format] [-N new_passphrase]\n" |
" [-P old_passphrase]\n" |
" [-P old_passphrase]\n" |
" ssh-keygen -i [-f input_keyfile] [-m key_format]\n" |
" ssh-keygen -i [-f input_keyfile] [-m key_format]\n" |
|
|
fprintf(stderr, |
fprintf(stderr, |
" ssh-keygen -F hostname [-lv] [-f known_hosts_file]\n" |
" ssh-keygen -F hostname [-lv] [-f known_hosts_file]\n" |
" ssh-keygen -H [-f known_hosts_file]\n" |
" ssh-keygen -H [-f known_hosts_file]\n" |
|
" ssh-keygen -K [-w provider]\n" |
" ssh-keygen -R hostname [-f known_hosts_file]\n" |
" ssh-keygen -R hostname [-f known_hosts_file]\n" |
" ssh-keygen -r hostname [-g] [-f input_keyfile]\n" |
" ssh-keygen -r hostname [-g] [-f input_keyfile]\n" |
#ifdef WITH_OPENSSL |
#ifdef WITH_OPENSSL |
" ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]\n" |
" ssh-keygen -M generate [-O option] output_file\n" |
" ssh-keygen -f input_file -T output_file [-v] [-a rounds] [-J num_lines]\n" |
" ssh-keygen -M screen [-f input_file] [-O option] output_file\n" |
" [-j start_line] [-K checkpt] [-W generator]\n" |
|
#endif |
#endif |
" ssh-keygen -I certificate_identity -s ca_key [-hU] [-D pkcs11_provider]\n" |
" ssh-keygen -I certificate_identity -s ca_key [-hU] [-D pkcs11_provider]\n" |
" [-n principals] [-O option] [-V validity_interval]\n" |
" [-n principals] [-O option] [-V validity_interval]\n" |
|
|
" ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n" |
" ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n" |
" file ...\n" |
" file ...\n" |
" ssh-keygen -Q -f krl_file file ...\n" |
" ssh-keygen -Q -f krl_file file ...\n" |
|
" ssh-keygen -Y find-principals -s signature_file -f allowed_signers_file\n" |
" ssh-keygen -Y check-novalidate -n namespace -s signature_file\n" |
" ssh-keygen -Y check-novalidate -n namespace -s signature_file\n" |
" ssh-keygen -Y sign -f key_file -n namespace file ...\n" |
" ssh-keygen -Y sign -f key_file -n namespace file ...\n" |
" ssh-keygen -Y verify -f allowed_signers_file -I signer_identity\n" |
" ssh-keygen -Y verify -f allowed_signers_file -I signer_identity\n" |
|
|
int |
int |
main(int argc, char **argv) |
main(int argc, char **argv) |
{ |
{ |
char dotsshdir[PATH_MAX], comment[1024], *passphrase1, *passphrase2; |
char dotsshdir[PATH_MAX], comment[1024], *passphrase; |
char *rr_hostname = NULL, *ep, *fp, *ra; |
char *rr_hostname = NULL, *ep, *fp, *ra; |
struct sshkey *private, *public; |
struct sshkey *private, *public; |
struct passwd *pw; |
struct passwd *pw; |
struct stat st; |
struct stat st; |
int r, opt, type, fd; |
int r, opt, type; |
int change_passphrase = 0, change_comment = 0, show_cert = 0; |
int change_passphrase = 0, change_comment = 0, show_cert = 0; |
int find_host = 0, delete_host = 0, hash_hosts = 0; |
int find_host = 0, delete_host = 0, hash_hosts = 0; |
int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0; |
int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0; |
int prefer_agent = 0, convert_to = 0, convert_from = 0; |
int prefer_agent = 0, convert_to = 0, convert_from = 0; |
int print_public = 0, print_generic = 0, cert_serial_autoinc = 0; |
int print_public = 0, print_generic = 0, cert_serial_autoinc = 0; |
unsigned long long ull, cert_serial = 0; |
int do_gen_candidates = 0, do_screen_candidates = 0, download_sk = 0; |
char *identity_comment = NULL, *ca_key_path = NULL; |
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; |
|
size_t i, nopts = 0; |
u_int32_t bits = 0; |
u_int32_t bits = 0; |
uint8_t sk_flags = SSH_SK_USER_PRESENCE_REQD; |
uint8_t sk_flags = SSH_SK_USER_PRESENCE_REQD; |
FILE *f; |
|
const char *errstr; |
const char *errstr; |
int log_level = SYSLOG_LEVEL_INFO; |
int log_level = SYSLOG_LEVEL_INFO; |
char *sign_op = NULL; |
char *sign_op = NULL; |
#ifdef WITH_OPENSSL |
|
/* Moduli generation/screening */ |
|
char out_file[PATH_MAX], *checkpoint = NULL; |
|
u_int32_t memory = 0, generator_wanted = 0; |
|
int do_gen_candidates = 0, do_screen_candidates = 0; |
|
unsigned long start_lineno = 0, lines_to_process = 0; |
|
BIGNUM *start = NULL; |
|
#endif |
|
|
|
extern int optind; |
extern int optind; |
extern char *optarg; |
extern char *optarg; |
|
|
|
|
sk_provider = getenv("SSH_SK_PROVIDER"); |
sk_provider = getenv("SSH_SK_PROVIDER"); |
|
|
/* Remaining character: d */ |
/* Remaining characters: dGjJSTWx */ |
while ((opt = getopt(argc, argv, "ABHLQUXceghiklopquvy" |
while ((opt = getopt(argc, argv, "ABHKLQUXceghiklopquvy" |
"C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Y:Z:" |
"C:D:E:F:I:M:N:O:P:R:V:Y:Z:" |
"a:b:f:g:j:m:n:r:s:t:w:x:z:")) != -1) { |
"a:b:f:g:m:n:r:s:t:w:z:")) != -1) { |
switch (opt) { |
switch (opt) { |
case 'A': |
case 'A': |
gen_all_hostkeys = 1; |
gen_all_hostkeys = 1; |
|
|
case 'g': |
case 'g': |
print_generic = 1; |
print_generic = 1; |
break; |
break; |
|
case 'K': |
|
download_sk = 1; |
|
break; |
case 'P': |
case 'P': |
identity_passphrase = optarg; |
identity_passphrase = optarg; |
break; |
break; |
|
|
check_krl = 1; |
check_krl = 1; |
break; |
break; |
case 'O': |
case 'O': |
add_cert_option(optarg); |
opts = xrecallocarray(opts, nopts, nopts + 1, |
|
sizeof(*opts)); |
|
opts[nopts++] = xstrdup(optarg); |
break; |
break; |
case 'Z': |
case 'Z': |
openssh_format_cipher = optarg; |
openssh_format_cipher = optarg; |
|
|
case 'w': |
case 'w': |
sk_provider = optarg; |
sk_provider = optarg; |
break; |
break; |
case 'x': |
|
if (*optarg == '\0') |
|
fatal("Missing security key flags"); |
|
if (strcasecmp(optarg, "no-touch-required") == 0) |
|
sk_flags &= ~SSH_SK_USER_PRESENCE_REQD; |
|
else { |
|
ull = strtoull(optarg, &ep, 0); |
|
if (*ep != '\0') |
|
fatal("Security key flags \"%s\" is " |
|
"not a number", optarg); |
|
if (ull > 0xff) { |
|
fatal("Invalid security key " |
|
"flags 0x%llx", ull); |
|
} |
|
sk_flags = (uint8_t)ull; |
|
} |
|
break; |
|
case 'z': |
case 'z': |
errno = 0; |
errno = 0; |
if (*optarg == '+') { |
if (*optarg == '+') { |
|
|
(errno == ERANGE && cert_serial == ULLONG_MAX)) |
(errno == ERANGE && cert_serial == ULLONG_MAX)) |
fatal("Invalid serial number \"%s\"", optarg); |
fatal("Invalid serial number \"%s\"", optarg); |
break; |
break; |
#ifdef WITH_OPENSSL |
|
/* Moduli generation/screening */ |
|
case 'G': |
|
do_gen_candidates = 1; |
|
if (strlcpy(out_file, optarg, sizeof(out_file)) >= |
|
sizeof(out_file)) |
|
fatal("Output filename too long"); |
|
break; |
|
case 'J': |
|
lines_to_process = strtoul(optarg, NULL, 10); |
|
break; |
|
case 'j': |
|
start_lineno = strtoul(optarg, NULL, 10); |
|
break; |
|
case 'K': |
|
if (strlen(optarg) >= PATH_MAX) |
|
fatal("Checkpoint filename too long"); |
|
checkpoint = xstrdup(optarg); |
|
break; |
|
case 'M': |
case 'M': |
memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX, |
if (strcmp(optarg, "generate") == 0) |
&errstr); |
do_gen_candidates = 1; |
if (errstr) |
else if (strcmp(optarg, "screen") == 0) |
fatal("Memory limit is %s: %s", errstr, optarg); |
do_screen_candidates = 1; |
|
else |
|
fatal("Unsupported moduli option %s", optarg); |
break; |
break; |
case 'S': |
|
/* XXX - also compare length against bits */ |
|
if (BN_hex2bn(&start, optarg) == 0) |
|
fatal("Invalid start point."); |
|
break; |
|
case 'T': |
|
do_screen_candidates = 1; |
|
if (strlcpy(out_file, optarg, sizeof(out_file)) >= |
|
sizeof(out_file)) |
|
fatal("Output filename too long"); |
|
break; |
|
case 'W': |
|
generator_wanted = (u_int32_t)strtonum(optarg, 1, |
|
UINT_MAX, &errstr); |
|
if (errstr != NULL) |
|
fatal("Desired generator invalid: %s (%s)", |
|
optarg, errstr); |
|
break; |
|
#endif /* WITH_OPENSSL */ |
|
case '?': |
case '?': |
default: |
default: |
usage(); |
usage(); |
|
|
argc -= optind; |
argc -= optind; |
|
|
if (sign_op != NULL) { |
if (sign_op != NULL) { |
if (cert_principals == NULL || *cert_principals == '\0') { |
if (strncmp(sign_op, "find-principals", 15) == 0) { |
error("Too few arguments for sign/verify: " |
if (ca_key_path == NULL) { |
"missing namespace"); |
error("Too few arguments for find-principals:" |
exit(1); |
"missing signature file"); |
} |
exit(1); |
if (strncmp(sign_op, "sign", 4) == 0) { |
} |
if (!have_identity) { |
if (!have_identity) { |
|
error("Too few arguments for find-principals:" |
|
"missing allowed keys file"); |
|
exit(1); |
|
} |
|
return sig_find_principals(ca_key_path, identity_file); |
|
} else if (strncmp(sign_op, "sign", 4) == 0) { |
|
if (cert_principals == NULL || |
|
*cert_principals == '\0') { |
error("Too few arguments for sign: " |
error("Too few arguments for sign: " |
|
"missing namespace"); |
|
exit(1); |
|
} |
|
if (!have_identity) { |
|
error("Too few arguments for sign: " |
"missing key"); |
"missing key"); |
exit(1); |
exit(1); |
} |
} |
return sign(identity_file, cert_principals, argc, argv); |
return sig_sign(identity_file, cert_principals, |
|
argc, argv); |
} else if (strncmp(sign_op, "check-novalidate", 16) == 0) { |
} else if (strncmp(sign_op, "check-novalidate", 16) == 0) { |
if (ca_key_path == NULL) { |
if (ca_key_path == NULL) { |
error("Too few arguments for check-novalidate: " |
error("Too few arguments for check-novalidate: " |
"missing signature file"); |
"missing signature file"); |
exit(1); |
exit(1); |
} |
} |
return verify(ca_key_path, cert_principals, |
return sig_verify(ca_key_path, cert_principals, |
NULL, NULL, NULL); |
NULL, NULL, NULL); |
} else if (strncmp(sign_op, "verify", 6) == 0) { |
} else if (strncmp(sign_op, "verify", 6) == 0) { |
|
if (cert_principals == NULL || |
|
*cert_principals == '\0') { |
|
error("Too few arguments for verify: " |
|
"missing namespace"); |
|
exit(1); |
|
} |
if (ca_key_path == NULL) { |
if (ca_key_path == NULL) { |
error("Too few arguments for verify: " |
error("Too few arguments for verify: " |
"missing signature file"); |
"missing signature file"); |
|
|
"missing principal ID"); |
"missing principal ID"); |
exit(1); |
exit(1); |
} |
} |
return verify(ca_key_path, cert_principals, |
return sig_verify(ca_key_path, cert_principals, |
cert_key_id, identity_file, rr_hostname); |
cert_key_id, identity_file, rr_hostname); |
} |
} |
|
error("Unsupported operation for -Y: \"%s\"", sign_op); |
usage(); |
usage(); |
/* NOTREACHED */ |
/* NOTREACHED */ |
} |
} |
|
|
error("Too few arguments."); |
error("Too few arguments."); |
usage(); |
usage(); |
} |
} |
} else if (argc > 0 && !gen_krl && !check_krl) { |
} else if (argc > 0 && !gen_krl && !check_krl && |
|
!do_gen_candidates && !do_screen_candidates) { |
error("Too many arguments."); |
error("Too many arguments."); |
usage(); |
usage(); |
} |
} |
|
|
error("Cannot use -l with -H or -R."); |
error("Cannot use -l with -H or -R."); |
usage(); |
usage(); |
} |
} |
#ifdef WITH_OPENSSL |
|
if (gen_krl) { |
if (gen_krl) { |
do_gen_krl(pw, update_krl, ca_key_path, |
do_gen_krl(pw, update_krl, ca_key_path, |
cert_serial, identity_comment, argc, argv); |
cert_serial, identity_comment, argc, argv); |
|
|
do_check_krl(pw, argc, argv); |
do_check_krl(pw, argc, argv); |
return (0); |
return (0); |
} |
} |
#endif |
|
if (ca_key_path != NULL) { |
if (ca_key_path != NULL) { |
if (cert_key_id == NULL) |
if (cert_key_id == NULL) |
fatal("Must specify key id (-I) when certifying"); |
fatal("Must specify key id (-I) when certifying"); |
|
for (i = 0; i < nopts; i++) |
|
add_cert_option(opts[i]); |
do_ca_sign(pw, ca_key_path, prefer_agent, |
do_ca_sign(pw, ca_key_path, prefer_agent, |
cert_serial, cert_serial_autoinc, argc, argv); |
cert_serial, cert_serial_autoinc, argc, argv); |
} |
} |
|
|
} |
} |
if (pkcs11provider != NULL) |
if (pkcs11provider != NULL) |
do_download(pw); |
do_download(pw); |
|
if (download_sk) { |
|
for (i = 0; i < nopts; i++) { |
|
if (strncasecmp(opts[i], "device=", 7) == 0) { |
|
sk_device = xstrdup(opts[i] + 7); |
|
} else { |
|
fatal("Option \"%s\" is unsupported for " |
|
"FIDO authenticator download", opts[i]); |
|
} |
|
} |
|
return do_download_sk(sk_provider, sk_device); |
|
} |
if (print_fingerprint || print_bubblebabble) |
if (print_fingerprint || print_bubblebabble) |
do_fingerprint(pw); |
do_fingerprint(pw); |
if (change_passphrase) |
if (change_passphrase) |
|
|
} |
} |
} |
} |
|
|
#ifdef WITH_OPENSSL |
if (do_gen_candidates || do_screen_candidates) { |
|
if (argc <= 0) |
|
fatal("No output file specified"); |
|
else if (argc > 1) |
|
fatal("Too many output files specified"); |
|
} |
if (do_gen_candidates) { |
if (do_gen_candidates) { |
FILE *out = fopen(out_file, "w"); |
do_moduli_gen(argv[0], opts, nopts); |
|
return 0; |
if (out == NULL) { |
|
error("Couldn't open modulus candidate file \"%s\": %s", |
|
out_file, strerror(errno)); |
|
return (1); |
|
} |
|
if (bits == 0) |
|
bits = DEFAULT_BITS; |
|
if (gen_candidates(out, memory, bits, start) != 0) |
|
fatal("modulus candidate generation failed"); |
|
|
|
return (0); |
|
} |
} |
|
|
if (do_screen_candidates) { |
if (do_screen_candidates) { |
FILE *in; |
do_moduli_screen(argv[0], opts, nopts); |
FILE *out = fopen(out_file, "a"); |
return 0; |
|
|
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, rounds == 0 ? 100 : rounds, |
|
generator_wanted, checkpoint, |
|
start_lineno, lines_to_process) != 0) |
|
fatal("modulus screening failed"); |
|
return (0); |
|
} |
} |
#endif |
|
|
|
if (gen_all_hostkeys) { |
if (gen_all_hostkeys) { |
do_gen_all_hostkeys(pw); |
do_gen_all_hostkeys(pw); |
|
|
switch (type) { |
switch (type) { |
case KEY_ECDSA_SK: |
case KEY_ECDSA_SK: |
case KEY_ED25519_SK: |
case KEY_ED25519_SK: |
|
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], "resident") == 0) { |
|
sk_flags |= SSH_SK_RESIDENT_KEY; |
|
} else if (strncasecmp(opts[i], "device=", 7) == 0) { |
|
sk_device = xstrdup(opts[i] + 7); |
|
} else if (strncasecmp(opts[i], "user=", 5) == 0) { |
|
sk_user = xstrdup(opts[i] + 5); |
|
} else if (strncasecmp(opts[i], |
|
"application=", 12) == 0) { |
|
sk_application = xstrdup(opts[i] + 12); |
|
} else { |
|
fatal("Option \"%s\" is unsupported for " |
|
"FIDO authenticator enrollment", opts[i]); |
|
} |
|
} |
if (!quiet) { |
if (!quiet) { |
printf("You may need to touch your security key " |
printf("You may need to touch your security key " |
"to authorize key generation.\n"); |
"to authorize key generation.\n"); |
} |
} |
fflush(stdout); |
passphrase = NULL; |
if (sshsk_enroll(type, sk_provider, |
for (i = 0 ; i < 3; i++) { |
cert_key_id == NULL ? "ssh:" : cert_key_id, |
fflush(stdout); |
sk_flags, NULL, &private, NULL) != 0) |
r = sshsk_enroll(type, sk_provider, sk_device, |
exit(1); /* error message already printed */ |
sk_application == NULL ? "ssh:" : sk_application, |
|
sk_user, sk_flags, passphrase, NULL, |
|
&private, NULL); |
|
if (r == 0) |
|
break; |
|
if (r != SSH_ERR_KEY_WRONG_PASSPHRASE) |
|
exit(1); /* error message already printed */ |
|
if (passphrase != NULL) |
|
freezero(passphrase, strlen(passphrase)); |
|
passphrase = read_passphrase("Enter PIN for security " |
|
"key: ", RP_ALLOW_STDIN); |
|
} |
|
if (passphrase != NULL) |
|
freezero(passphrase, strlen(passphrase)); |
|
if (i > 3) |
|
fatal("Too many incorrect PINs"); |
break; |
break; |
default: |
default: |
if ((r = sshkey_generate(type, bits, &private)) != 0) |
if ((r = sshkey_generate(type, bits, &private)) != 0) |
|
|
/* If the file already exists, ask the user to confirm. */ |
/* If the file already exists, ask the user to confirm. */ |
if (!confirm_overwrite(identity_file)) |
if (!confirm_overwrite(identity_file)) |
exit(1); |
exit(1); |
/* Ask for a passphrase (twice). */ |
|
if (identity_passphrase) |
|
passphrase1 = xstrdup(identity_passphrase); |
|
else if (identity_new_passphrase) |
|
passphrase1 = xstrdup(identity_new_passphrase); |
|
else { |
|
passphrase_again: |
|
passphrase1 = |
|
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. |
|
*/ |
|
explicit_bzero(passphrase1, strlen(passphrase1)); |
|
explicit_bzero(passphrase2, strlen(passphrase2)); |
|
free(passphrase1); |
|
free(passphrase2); |
|
printf("Passphrases do not match. Try again.\n"); |
|
goto passphrase_again; |
|
} |
|
/* Clear the other copy of the passphrase. */ |
|
explicit_bzero(passphrase2, strlen(passphrase2)); |
|
free(passphrase2); |
|
} |
|
|
|
|
/* Determine the passphrase for the private key */ |
|
passphrase = private_key_passphrase(); |
if (identity_comment) { |
if (identity_comment) { |
strlcpy(comment, identity_comment, sizeof(comment)); |
strlcpy(comment, identity_comment, sizeof(comment)); |
} else { |
} else { |
|
|
} |
} |
|
|
/* Save the key with the given passphrase and comment. */ |
/* Save the key with the given passphrase and comment. */ |
if ((r = sshkey_save_private(private, identity_file, passphrase1, |
if ((r = sshkey_save_private(private, identity_file, passphrase, |
comment, private_key_format, openssh_format_cipher, rounds)) != 0) { |
comment, private_key_format, openssh_format_cipher, rounds)) != 0) { |
error("Saving key \"%s\" failed: %s", |
error("Saving key \"%s\" failed: %s", |
identity_file, ssh_err(r)); |
identity_file, ssh_err(r)); |
explicit_bzero(passphrase1, strlen(passphrase1)); |
freezero(passphrase, strlen(passphrase)); |
free(passphrase1); |
|
exit(1); |
exit(1); |
} |
} |
/* Clear the passphrase. */ |
freezero(passphrase, strlen(passphrase)); |
explicit_bzero(passphrase1, strlen(passphrase1)); |
|
free(passphrase1); |
|
|
|
/* Clear the private key and the random number generator. */ |
|
sshkey_free(private); |
sshkey_free(private); |
|
|
if (!quiet) |
if (!quiet) { |
printf("Your identification has been saved in %s.\n", identity_file); |
printf("Your identification has been saved in %s\n", |
|
identity_file); |
|
} |
|
|
strlcat(identity_file, ".pub", sizeof(identity_file)); |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1) |
if ((r = sshkey_save_public(public, identity_file, comment)) != 0) { |
fatal("Unable to save public key to %s: %s", |
fatal("Unable to save public key to %s: %s", |
identity_file, strerror(errno)); |
identity_file, strerror(errno)); |
if ((f = fdopen(fd, "w")) == NULL) |
} |
fatal("fdopen %s failed: %s", identity_file, strerror(errno)); |
|
if ((r = sshkey_write(public, f)) != 0) |
|
error("write key failed: %s", ssh_err(r)); |
|
fprintf(f, " %s\n", comment); |
|
if (ferror(f) || fclose(f) != 0) |
|
fatal("write public failed: %s", strerror(errno)); |
|
|
|
if (!quiet) { |
if (!quiet) { |
fp = sshkey_fingerprint(public, fingerprint_hash, |
fp = sshkey_fingerprint(public, fingerprint_hash, |
|
|
SSH_FP_RANDOMART); |
SSH_FP_RANDOMART); |
if (fp == NULL || ra == NULL) |
if (fp == NULL || ra == NULL) |
fatal("sshkey_fingerprint failed"); |
fatal("sshkey_fingerprint failed"); |
printf("Your public key has been saved in %s.\n", |
printf("Your public key has been saved in %s\n", |
identity_file); |
identity_file); |
printf("The key fingerprint is:\n"); |
printf("The key fingerprint is:\n"); |
printf("%s %s\n", fp, comment); |
printf("%s %s\n", fp, comment); |