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

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Diff for /src/usr.bin/ssh/ssh-keygen.c between version 1.282 and 1.374

version 1.282, 2015/11/19 01:12:32

version 1.374, 2019/12/10 22:37:20

Line 16

#include <sys/socket.h>

#include <sys/stat.h>

#ifdef WITH_OPENSSL

#include <openssl/evp.h>

#include <openssl/pem.h>

#endif

#include <stdint.h>

#include <errno.h>

#include <fcntl.h>

#include <netdb.h>

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#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdarg.h>

#include <unistd.h>

#include <limits.h>

#include <locale.h>

#include "xmalloc.h"

#include "sshkey.h"

#include "rsa.h"

#include "authfile.h"

#include "uuencode.h"

#include "sshbuf.h"

#include "pathnames.h"

#include "log.h"

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#include "atomicio.h"

#include "krl.h"

#include "digest.h"

#include "utf8.h"

#include "authfd.h"

#include "sshsig.h"

#include "ssh-sk.h"

#include "sk-api.h" /* XXX for SSH_SK_USER_PRESENCE_REQD; remove */

#ifdef ENABLE_PKCS11

#include "ssh-pkcs11.h"

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# define DEFAULT_KEY_TYPE_NAME "ed25519"

#endif

/* Number of bits in the RSA/DSA key. This value can be set on the command line. */

#define DEFAULT_BITS 2048

* Default number of bits in the RSA, DSA and ECDSA keys. These value can be

* overridden on the command line.

* These values, with the exception of DSA, provide security equivalent to at

* least 128 bits of security according to NIST Special Publication 800-57:

* Recommendation for Key Management Part 1 rev 4 section 5.6.1.

* For DSA it (and FIPS-186-4 section 4.2) specifies that the only size for

* which a 160bit hash is acceptable is 1kbit, and since ssh-dss specifies only

* SHA1 we limit the DSA key size 1k bits.

#define DEFAULT_BITS 3072

#define DEFAULT_BITS_DSA 1024

#define DEFAULT_BITS_ECDSA 256

u_int32_t bits = 0;

static int quiet = 0;

* Flag indicating that we just want to change the passphrase. This can be

* set on the command line.

int change_passphrase = 0;

* Flag indicating that we just want to change the comment. This can be set

* on the command line.

int change_comment = 0;

int quiet = 0;

int log_level = SYSLOG_LEVEL_INFO;

/* Flag indicating that we want to hash a known_hosts file */

int hash_hosts = 0;

/* Flag indicating that we want lookup a host in known_hosts file */

int find_host = 0;

/* Flag indicating that we want to delete a host from a known_hosts file */

int delete_host = 0;

/* Flag indicating that we want to show the contents of a certificate */

int show_cert = 0;

/* Flag indicating that we just want to see the key fingerprint */

int print_fingerprint = 0;

static int print_fingerprint = 0;

int print_bubblebabble = 0;

static int print_bubblebabble = 0;

/* Hash algorithm to use for fingerprints. */

int fingerprint_hash = SSH_FP_HASH_DEFAULT;

static int fingerprint_hash = SSH_FP_HASH_DEFAULT;

/* The identity file name, given on the command line or entered by the user. */

char identity_file[1024];

static char identity_file[PATH_MAX];

int have_identity = 0;

static int have_identity = 0;

/* This is set to the passphrase if given on the command line. */

char *identity_passphrase = NULL;

static char *identity_passphrase = NULL;

/* This is set to the new passphrase if given on the command line. */

char *identity_new_passphrase = NULL;

static char *identity_new_passphrase = NULL;

/* This is set to the new comment if given on the command line. */

char *identity_comment = NULL;

/* Path to CA key when certifying keys. */

char *ca_key_path = NULL;

/* Certificate serial number */

unsigned long long cert_serial = 0;

/* Key type when certifying */

u_int cert_key_type = SSH2_CERT_TYPE_USER;

static u_int cert_key_type = SSH2_CERT_TYPE_USER;

/* "key ID" of signed key */

char *cert_key_id = NULL;

static char *cert_key_id = NULL;

/* Comma-separated list of principal names for certifying keys */

char *cert_principals = NULL;

static char *cert_principals = NULL;

/* Validity period for certificates */

u_int64_t cert_valid_from = 0;

static u_int64_t cert_valid_from = 0;

u_int64_t cert_valid_to = ~0ULL;

static u_int64_t cert_valid_to = ~0ULL;

/* Certificate options */

#define CERTOPT_X_FWD (1)

#define CERTOPT_AGENT_FWD (1<<1)

#define CERTOPT_PORT_FWD (1<<2)

#define CERTOPT_PTY (1<<3)

#define CERTOPT_USER_RC (1<<4)

#define CERTOPT_NO_REQUIRE_USER_PRESENCE (1<<5)

#define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \

CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)

u_int32_t certflags_flags = CERTOPT_DEFAULT;

static u_int32_t certflags_flags = CERTOPT_DEFAULT;

char *certflags_command = NULL;

static char *certflags_command = NULL;

char *certflags_src_addr = NULL;

static char *certflags_src_addr = NULL;

/* Arbitrary extensions specified by user */

struct cert_userext {

char *key;

char *val;

int crit;

};

static struct cert_userext *cert_userext;

static size_t ncert_userext;

/* Conversion to/from various formats */

int convert_to = 0;

int convert_from = 0;

enum {

FMT_RFC4716,

FMT_PKCS8,

FMT_PEM

} convert_format = FMT_RFC4716;

int print_public = 0;

int print_generic = 0;

char *key_type_name = NULL;

static char *key_type_name = NULL;

/* Load key from this PKCS#11 provider */

char *pkcs11provider = NULL;

static char *pkcs11provider = NULL;

/* Use new OpenSSH private key format when writing SSH2 keys instead of PEM */

/* FIDO/U2F provider to use */

int use_new_format = 0;

static char *sk_provider = NULL;

/* Format for writing private keys */

static int private_key_format = SSHKEY_PRIVATE_OPENSSH;

/* Cipher for new-format private keys */

char *new_format_cipher = NULL;

static char *openssh_format_cipher = NULL;

* Number of KDF rounds to derive new format keys /

* number of primality trials when screening moduli.

int rounds = 0;

static int rounds = 0;

/* argv0 */

extern char *__progname;

char hostname[NI_MAXHOST];

static char hostname[NI_MAXHOST];

#ifdef WITH_OPENSSL

/* moduli.c */

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static void

type_bits_valid(int type, const char *name, u_int32_t *bitsp)

{

#ifdef WITH_OPENSSL

u_int maxbits, nid;

#endif

if (type == KEY_UNSPEC)

fatal("unknown key type %s", key_type_name);

if (*bitsp == 0) {

#ifdef WITH_OPENSSL

if (type == KEY_DSA)

u_int nid;

switch(type) {

case KEY_DSA:

*bitsp = DEFAULT_BITS_DSA;

else if (type == KEY_ECDSA) {

break;

case KEY_ECDSA:

if (name != NULL &&

(nid = sshkey_ecdsa_nid_from_name(name)) > 0)

*bitsp = sshkey_curve_nid_to_bits(nid);

if (*bitsp == 0)

*bitsp = DEFAULT_BITS_ECDSA;

break;

case KEY_RSA:

*bitsp = DEFAULT_BITS;

break;

}

else

#endif

*bitsp = DEFAULT_BITS;

}

#ifdef WITH_OPENSSL

maxbits = (type == KEY_DSA) ?

switch (type) {

OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;

case KEY_DSA:

if (*bitsp > maxbits)

if (*bitsp != 1024)

fatal("key bits exceeds maximum %d", maxbits);

fatal("Invalid DSA key length: must be 1024 bits");

if (type == KEY_DSA && *bitsp != 1024)

break;

fatal("DSA keys must be 1024 bits");

case KEY_RSA:

else if (type != KEY_ECDSA && type != KEY_ED25519 && *bitsp < 1024)

if (*bitsp < SSH_RSA_MINIMUM_MODULUS_SIZE)

fatal("Key must at least be 1024 bits");

fatal("Invalid RSA key length: minimum is %d bits",

else if (type == KEY_ECDSA && sshkey_ecdsa_bits_to_nid(*bitsp) == -1)

SSH_RSA_MINIMUM_MODULUS_SIZE);

fatal("Invalid ECDSA key length - valid lengths are "

else if (*bitsp > OPENSSL_RSA_MAX_MODULUS_BITS)

"256, 384 or 521 bits");

fatal("Invalid RSA key length: maximum is %d bits",

OPENSSL_RSA_MAX_MODULUS_BITS);

break;

case KEY_ECDSA:

if (sshkey_ecdsa_bits_to_nid(*bitsp) == -1)

fatal("Invalid ECDSA key length: valid lengths are "

"256, 384 or 521 bits");

}

#endif

}

* Checks whether a file exists and, if so, asks the user whether they wish

* to overwrite it.

* Returns nonzero if the file does not already exist or if the user agrees to

* overwrite, or zero otherwise.

static int

confirm_overwrite(const char *filename)

{

char yesno[3];

struct stat st;

if (stat(filename, &st) != 0)

return 1;

printf("%s already exists.\n", filename);

printf("Overwrite (y/n)? ");

fflush(stdout);

if (fgets(yesno, sizeof(yesno), stdin) == NULL)

return 0;

if (yesno[0] != 'y' && yesno[0] != 'Y')

return 0;

return 1;

}

static void

ask_filename(struct passwd *pw, const char *prompt)

{

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name = _PATH_SSH_CLIENT_ID_RSA;

else {

switch (sshkey_type_from_name(key_type_name)) {

case KEY_RSA1:

name = _PATH_SSH_CLIENT_IDENTITY;

break;

case KEY_DSA_CERT:

case KEY_DSA:

name = _PATH_SSH_CLIENT_ID_DSA;

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case KEY_ECDSA:

name = _PATH_SSH_CLIENT_ID_ECDSA;

break;

case KEY_ECDSA_SK_CERT:

case KEY_ECDSA_SK:

name = _PATH_SSH_CLIENT_ID_ECDSA_SK;

break;

case KEY_RSA_CERT:

case KEY_RSA:

name = _PATH_SSH_CLIENT_ID_RSA;

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case KEY_ED25519_CERT:

name = _PATH_SSH_CLIENT_ID_ED25519;

break;

case KEY_ED25519_SK:

case KEY_ED25519_SK_CERT:

name = _PATH_SSH_CLIENT_ID_ED25519_SK;

break;

case KEY_XMSS:

case KEY_XMSS_CERT:

name = _PATH_SSH_CLIENT_ID_XMSS;

break;

default:

fatal("bad key type");

}

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}

static struct sshkey *

load_identity(char *filename)

load_identity(const char *filename, char **commentp)

{

char *pass;

struct sshkey *prv;

int r;

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

if (commentp != NULL)

*commentp = NULL;

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));

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pass = xstrdup(identity_passphrase);

else

pass = read_passphrase("Enter passphrase: ", RP_ALLOW_STDIN);

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

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

explicit_bzero(pass, strlen(pass));

free(pass);

if (r != 0)

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static void

do_convert_to_ssh2(struct passwd *pw, struct sshkey *k)

{

size_t len;

struct sshbuf *b;

u_char *blob;

char comment[61], *b64;

char comment[61];

int r;

if (k->type == KEY_RSA1)

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

fatal("version 1 keys are not supported");

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

if ((r = sshkey_to_blob(k, &blob, &len)) != 0)

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

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

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

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

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

snprintf(comment, sizeof(comment),

"%u-bit %s, converted by %s@%s from OpenSSH",

sshkey_size(k), sshkey_type(k),

pw->pw_name, hostname);

sshkey_free(k);

sshbuf_free(b);

fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);

fprintf(stdout, "Comment: \"%s\"\n", comment);

fprintf(stdout, "Comment: \"%s\"\n%s", comment, b64);

dump_base64(stdout, blob, len);

fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);

sshkey_free(k);

free(b64);

free(blob);

exit(0);

}

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do_convert_to_pkcs8(struct sshkey *k)

{

switch (sshkey_type_plain(k->type)) {

case KEY_RSA1:

case KEY_RSA:

if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))

fatal("PEM_write_RSA_PUBKEY failed");

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do_convert_to_pem(struct sshkey *k)

{

switch (sshkey_type_plain(k->type)) {

case KEY_RSA1:

case KEY_RSA:

if (!PEM_write_RSAPublicKey(stdout, k->rsa))

fatal("PEM_write_RSAPublicKey failed");

break;

#if notyet /* OpenSSH 0.9.8 lacks this function */

case KEY_DSA:

if (!PEM_write_DSAPublicKey(stdout, k->dsa))

fatal("PEM_write_DSAPublicKey failed");

break;

#endif

/* XXX ECDSA? */

default:

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

}

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if (!have_identity)

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

if (stat(identity_file, &st) < 0)

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

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

if ((r = sshkey_load_public(identity_file, &k, NULL)) != 0)

k = load_identity(identity_file);

k = load_identity(identity_file, NULL);

switch (convert_format) {

case FMT_RFC4716:

do_convert_to_ssh2(pw, k);

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}

static struct sshkey *

do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)

do_convert_private_ssh2(struct sshbuf *b)

{

struct sshbuf *b;

struct sshkey *key = NULL;

char *type, *cipher;

u_char e1, e2, e3, *sig = NULL, data[] = "abcde12345";

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u_int magic, i1, i2, i3, i4;

size_t slen;

u_long e;

BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;

BIGNUM *dsa_pub_key = NULL, *dsa_priv_key = NULL;

BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL;

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

if ((b = sshbuf_from(blob, blen)) == NULL)

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

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

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

if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {

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

SSH_COM_PRIVATE_KEY_MAGIC);

sshbuf_free(b);

return NULL;

}

if ((r = sshbuf_get_u32(b, &i1)) != 0 ||

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

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

free(cipher);

sshbuf_free(b);

free(type);

return NULL;

}

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} else if (strstr(type, "rsa")) {

ktype = KEY_RSA;

} else {

sshbuf_free(b);

free(type);

return NULL;

}

if ((key = sshkey_new_private(ktype)) == NULL)

if ((key = sshkey_new(ktype)) == NULL)

fatal("key_new_private failed");

fatal("sshkey_new failed");

free(type);

switch (key->type) {

case KEY_DSA:

buffer_get_bignum_bits(b, key->dsa->p);

if ((dsa_p = BN_new()) == NULL ||

buffer_get_bignum_bits(b, key->dsa->g);

(dsa_q = BN_new()) == NULL ||

buffer_get_bignum_bits(b, key->dsa->q);

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

buffer_get_bignum_bits(b, key->dsa->pub_key);

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

buffer_get_bignum_bits(b, key->dsa->priv_key);

(dsa_priv_key = BN_new()) == NULL)

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

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__);

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__);

dsa_pub_key = dsa_priv_key = NULL; /* transferred */

break;

case KEY_RSA:

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

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e += e3;

debug("e %lx", e);

}

if (!BN_set_word(key->rsa->e, e)) {

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

sshbuf_free(b);

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

if (!BN_set_word(rsa_e, e)) {

BN_clear_free(rsa_e);

sshkey_free(key);

return NULL;

}

buffer_get_bignum_bits(b, key->rsa->d);

if ((rsa_n = BN_new()) == NULL ||

buffer_get_bignum_bits(b, key->rsa->n);

(rsa_d = BN_new()) == NULL ||

buffer_get_bignum_bits(b, key->rsa->iqmp);

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

buffer_get_bignum_bits(b, key->rsa->q);

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

buffer_get_bignum_bits(b, key->rsa->p);

(rsa_iqmp = BN_new()) == NULL)

if ((r = rsa_generate_additional_parameters(key->rsa)) != 0)

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

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__);

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__);

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));

BN_clear_free(rsa_iqmp);

break;

}

rlen = sshbuf_len(b);

if (rlen != 0)

error("do_convert_private_ssh2_from_blob: "

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

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

sshbuf_free(b);

/* try the key */

if (sshkey_sign(key, &sig, &slen, data, sizeof(data), 0) != 0 ||

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

sshkey_verify(key, sig, slen, data, sizeof(data), 0) != 0) {

NULL, NULL, 0) != 0 ||

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

NULL, 0, NULL) != 0) {

sshkey_free(key);

free(sig);

return NULL;

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int r, blen, escaped = 0;

u_int len;

char line[1024];

u_char blob[8096];

struct sshbuf *buf;

char encoded[8096];

FILE *fp;

if ((buf = sshbuf_new()) == NULL)

fatal("sshbuf_new failed");

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

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

encoded[0] = '\0';

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(encoded[len-2] == '=') &&

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

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

blen = uudecode(encoded, blob, sizeof(blob));

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

if (blen < 0)

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

fatal("uudecode failed.");

if (*private)

*k = do_convert_private_ssh2_from_blob(blob, blen);

*k = do_convert_private_ssh2(buf);

else if ((r = sshkey_from_blob(blob, blen, k)) != 0)

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

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

sshbuf_free(buf);

fclose(fp);

}

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identity_file);

}

fclose(fp);

switch (EVP_PKEY_type(pubkey->type)) {

switch (EVP_PKEY_base_id(pubkey)) {

case EVP_PKEY_RSA:

if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)

fatal("sshkey_new failed");

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break;

default:

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

EVP_PKEY_type(pubkey->type));

EVP_PKEY_base_id(pubkey));

}

EVP_PKEY_free(pubkey);

return;

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{

FILE *fp;

RSA *rsa;

#ifdef notyet

DSA *dsa;

#endif

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

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

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fclose(fp);

return;

}

#if notyet /* OpenSSH 0.9.8 lacks this function */

rewind(fp);

if ((dsa = PEM_read_DSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {

if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)

fatal("sshkey_new failed");

(*k)->type = KEY_DSA;

(*k)->dsa = dsa;

fclose(fp);

return;

}

/* XXX ECDSA */

#endif

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

}

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if (!have_identity)

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

if (stat(identity_file, &st) < 0)

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

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

switch (convert_format) {

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struct sshkey *prv;

struct stat st;

int r;

char *comment = NULL;

if (!have_identity)

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

if (stat(identity_file, &st) < 0)

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

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

prv = load_identity(identity_file);

prv = load_identity(identity_file, &comment);

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

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

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

sshkey_free(prv);

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

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

fprintf(stdout, "\n");

free(comment);

exit(0);

}

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fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;

rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;

pkcs11_init(0);

pkcs11_init(1);

nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);

if (nkeys <= 0)

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

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Line 824

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

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

fp, sshkey_type(keys[i]));

if (log_level >= SYSLOG_LEVEL_VERBOSE)

if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)

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

free(ra);

free(fp);

Line 801

Line 848

struct sshkey *ret;

int r;

if ((ret = sshkey_new(KEY_RSA1)) == NULL)

fatal("sshkey_new failed");

/* Try RSA1 */

if ((r = sshkey_read(ret, cpp)) == 0)

return ret;

/* Try modern */

sshkey_free(ret);

if ((ret = sshkey_new(KEY_UNSPEC)) == NULL)

fatal("sshkey_new failed");

if ((r = sshkey_read(ret, cpp)) == 0)

Line 830

Line 870

ra = sshkey_fingerprint(public, fingerprint_hash, SSH_FP_RANDOMART);

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

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

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

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

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

if (log_level >= SYSLOG_LEVEL_VERBOSE)

if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)

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

free(ra);

free(fp);

Line 846

Line 886

struct sshkey *public = NULL;

int r;

if (stat(identity_file, &st) < 0)

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

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

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

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

Line 867

Line 907

{

FILE *f;

struct sshkey *public = NULL;

char *comment = NULL, *cp, *ep, line[16*1024];

char *comment = NULL, *cp, *ep, *line = NULL;

size_t linesize = 0;

int i, invalid = 1;

const char *path;

long int lnum = 0;

u_long lnum = 0;

if (!have_identity)

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

Line 882

Line 923

} else if ((f = fopen(path, "r")) == NULL)

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

while (read_keyfile_line(f, path, line, sizeof(line), &lnum) == 0) {

while (getline(&line, &linesize, f) != -1) {

lnum++;

cp = line;

cp[strcspn(cp, "\n")] = '\0';

/* Trim leading space and comments */

Line 902

Line 944

if (lnum == 1 && strcmp(identity_file, "-") != 0 &&

strstr(cp, "PRIVATE KEY") != NULL) {

free(line);

fclose(f);

fingerprint_private(path);

exit(0);

Line 933

Line 976

}

/* Retry after parsing leading hostname/key options */

if (public == NULL && (public = try_read_key(&cp)) == NULL) {

debug("%s:%ld: not a public key", path, lnum);

debug("%s:%lu: not a public key", path, lnum);

continue;

}

Line 948

Line 991

invalid = 0; /* One good key in the file is sufficient */

}

fclose(f);

free(line);

if (invalid)

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

Line 963

Line 1007

char *path;

} key_types[] = {

#ifdef WITH_OPENSSL

#ifdef WITH_SSH1

{ "rsa1", "RSA1", _PATH_HOST_KEY_FILE },

#endif /* WITH_SSH1 */

{ "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },

{ "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },

{ "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },

#endif /* WITH_OPENSSL */

{ "ed25519", "ED25519",_PATH_HOST_ED25519_KEY_FILE },

#ifdef WITH_XMSS

{ "xmss", "XMSS",_PATH_HOST_XMSS_KEY_FILE },

#endif /* WITH_XMSS */

{ NULL, NULL, NULL }

};

u_int32_t bits = 0;

int first = 0;

struct stat st;

struct sshkey *private, *public;

char comment[1024];

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++) {

if (stat(key_types[i].path, &st) == 0)

public = private = NULL;

continue;

prv_tmp = pub_tmp = prv_file = pub_file = NULL;

if (errno != ENOENT) {

xasprintf(&prv_file, "%s%s",

identity_file, key_types[i].path);

/* Check whether private key exists and is not zero-length */

if (stat(prv_file, &st) == 0) {

if (st.st_size != 0)

goto next;

} else if (errno != ENOENT) {

error("Could not stat %s: %s", key_types[i].path,

strerror(errno));

first = 0;

goto failnext;

continue;

}

* Private key doesn't exist or is invalid; proceed with

* key generation.

xasprintf(&prv_tmp, "%s%s.XXXXXXXXXX",

identity_file, key_types[i].path);

xasprintf(&pub_tmp, "%s%s.pub.XXXXXXXXXX",

identity_file, key_types[i].path);

xasprintf(&pub_file, "%s%s.pub",

identity_file, key_types[i].path);

if (first == 0) {

first = 1;

printf("%s: generating new host keys: ", __progname);

Line 998

Line 1061

printf("%s ", key_types[i].key_type_display);

fflush(stdout);

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

strlcpy(identity_file, key_types[i].path, sizeof(identity_file));

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

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

prv_tmp, strerror(errno));

goto failnext;

}

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

bits = 0;

type_bits_valid(type, NULL, &bits);

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

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

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

first = 0;

goto failnext;

continue;

}

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

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

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

hostname);

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

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

comment, use_new_format, new_format_cipher, rounds)) != 0) {

comment, private_key_format, openssh_format_cipher,

rounds)) != 0) {

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

identity_file, ssh_err(r));

prv_tmp, ssh_err(r));

sshkey_free(private);

goto failnext;

sshkey_free(public);

first = 0;

continue;

}

sshkey_free(private);

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

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

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

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

pub_tmp, strerror(errno));

if (fd == -1) {

goto failnext;

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

identity_file);

sshkey_free(public);

first = 0;

continue;

}

(void)fchmod(fd, 0644);

f = fdopen(fd, "w");

if (f == NULL) {

error("fdopen %s failed", identity_file);

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

close(fd);

sshkey_free(public);

goto failnext;

first = 0;

continue;

}

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

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

fclose(f);

sshkey_free(public);

goto failnext;

first = 0;

continue;

}

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

fclose(f);

if (ferror(f) != 0) {

sshkey_free(public);

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) {

error("Unable to move %s into position: %s",

pub_file, strerror(errno));

goto failnext;

}

if (rename(prv_tmp, prv_file) != 0) {

error("Unable to move %s into position: %s",

key_types[i].path, strerror(errno));

failnext:

first = 0;

goto next;

}

sshkey_free(private);

sshkey_free(public);

free(prv_tmp);

free(pub_tmp);

free(prv_file);

free(pub_file);

}

if (first != 0)

printf("\n");

Line 1059

Line 1143

int has_unhashed; /* When hashing, original had unhashed hosts */

int found_key; /* For find/delete, host was found */

int invalid; /* File contained invalid items; don't delete */

int hash_hosts; /* Hash hostnames as we go */

int find_host; /* Search for specific hostname */

int delete_host; /* Delete host from known_hosts */

};

static int

Line 1067

Line 1154

struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;

char *hashed, *cp, *hosts, *ohosts;

int has_wild = l->hosts && strcspn(l->hosts, "*?!") != strlen(l->hosts);

int was_hashed = l->hosts && l->hosts[0] == HASH_DELIM;

switch (l->status) {

case HKF_STATUS_OK:

Line 1075

Line 1163

* Don't hash hosts already already hashed, with wildcard

* characters or a CA/revocation marker.

if ((l->match & HKF_MATCH_HOST_HASHED) != 0 ||

if (was_hashed || has_wild || l->marker != MRK_NONE) {

has_wild || l->marker != MRK_NONE) {

fprintf(ctx->out, "%s\n", l->line);

if (has_wild && !find_host) {

if (has_wild && !ctx->find_host) {

logit("%s:%ld: ignoring host name "

logit("%s:%lu: ignoring host name "

"with wildcard: %.64s", l->path,

l->linenum, l->hosts);

}

Line 1091

Line 1178

ohosts = hosts = xstrdup(l->hosts);

while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {

lowercase(cp);

if ((hashed = host_hash(cp, NULL, 0)) == NULL)

fatal("hash_host failed");

fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);

Line 1101

Line 1189

case HKF_STATUS_INVALID:

/* Retain invalid lines, but mark file as invalid. */

ctx->invalid = 1;

logit("%s:%ld: invalid line", l->path, l->linenum);

logit("%s:%lu: invalid line", l->path, l->linenum);

/* FALLTHROUGH */

default:

fprintf(ctx->out, "%s\n", l->line);

Line 1117

Line 1205

struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;

enum sshkey_fp_rep rep;

int fptype;

char *fp;

char *fp = NULL, *ra = NULL;

fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;

rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;

if (l->status == HKF_STATUS_MATCHED) {

if (delete_host) {

if (ctx->delete_host) {

if (l->marker != MRK_NONE) {

/* Don't remove CA and revocation lines */

fprintf(ctx->out, "%s\n", l->line);

Line 1135

Line 1223

ctx->found_key = 1;

if (!quiet)

printf("# Host %s found: line %ld\n",

printf("# Host %s found: line %lu\n",

ctx->host, l->linenum);

}

return 0;

} else if (find_host) {

} else if (ctx->find_host) {

ctx->found_key = 1;

if (!quiet) {

printf("# Host %s found: line %ld %s\n",

printf("# Host %s found: line %lu %s\n",

ctx->host,

l->linenum, l->marker == MRK_CA ? "CA" :

(l->marker == MRK_REVOKE ? "REVOKED" : ""));

}

if (hash_hosts)

if (ctx->hash_hosts)

known_hosts_hash(l, ctx);

else if (print_fingerprint) {

fp = sshkey_fingerprint(l->key, fptype, rep);

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

ra = sshkey_fingerprint(l->key,

fingerprint_hash, SSH_FP_RANDOMART);

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

fatal("%s: sshkey_fingerprint failed",

__func__);

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

sshkey_type(l->key), fp, l->comment);

if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)

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

free(ra);

free(fp);

} else

fprintf(ctx->out, "%s\n", l->line);

return 0;

}

} else if (delete_host) {

} else if (ctx->delete_host) {

/* Retain non-matching hosts when deleting */

if (l->status == HKF_STATUS_INVALID) {

ctx->invalid = 1;

logit("%s:%ld: invalid line", l->path, l->linenum);

logit("%s:%lu: invalid line", l->path, l->linenum);

}

fprintf(ctx->out, "%s\n", l->line);

}

Line 1170

Line 1266

}

static void

do_known_hosts(struct passwd *pw, const char *name)

do_known_hosts(struct passwd *pw, const char *name, int find_host,

int delete_host, int hash_hosts)

{

char *cp, tmp[PATH_MAX], old[PATH_MAX];

int r, fd, oerrno, inplace = 0;

Line 1189

Line 1286

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

ctx.out = stdout;

ctx.host = name;

ctx.hash_hosts = hash_hosts;

ctx.find_host = find_host;

ctx.delete_host = delete_host;

* Find hosts goes to stdout, hash and deletions happen in-place

Line 1210

Line 1310

}

inplace = 1;

}

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

foreach_options = find_host ? HKF_WANT_MATCH : 0;

foreach_options |= print_fingerprint ? HKF_WANT_PARSE_KEY : 0;

if ((r = hostkeys_foreach(identity_file,

if ((r = hostkeys_foreach(identity_file, (find_host || !hash_hosts) ?

hash_hosts ? known_hosts_hash : known_hosts_find_delete, &ctx,

known_hosts_find_delete : known_hosts_hash, &ctx, name, NULL,

name, NULL, foreach_options)) != 0)

foreach_options)) != 0) {

if (inplace)

unlink(tmp);

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

}

if (inplace)

fclose(ctx.out);

Line 1277

Line 1379

if (!have_identity)

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

if (stat(identity_file, &st) < 0)

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

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

/* Try to load the file with empty passphrase. */

r = sshkey_load_private(identity_file, "", &private, &comment);

Line 1299

Line 1401

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

}

if (comment)

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

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

/* Ask the new passphrase (twice). */

if (identity_new_passphrase) {

Line 1328

Line 1430

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

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

comment, use_new_format, new_format_cipher, rounds)) != 0) {

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

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

identity_file, ssh_err(r));

explicit_bzero(passphrase1, strlen(passphrase1));

Line 1351

Line 1453

* Print the SSHFP RR.

static int

do_print_resource_record(struct passwd *pw, char *fname, char *hname)

do_print_resource_record(struct passwd *pw, char *fname, char *hname,

int print_generic)

{

struct sshkey *public;

char *comment = NULL;

Line 1360

Line 1463

if (fname == NULL)

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

if (stat(fname, &st) < 0) {

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

if (errno == ENOENT)

return 0;

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

Line 1378

Line 1481

* Change the comment of a private key file.

static void

do_change_comment(struct passwd *pw)

do_change_comment(struct passwd *pw, const char *identity_comment)

{

char new_comment[1024], *comment, *passphrase;

struct sshkey *private;

Line 1389

Line 1492

if (!have_identity)

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

if (stat(identity_file, &st) < 0)

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

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

if ((r = sshkey_load_private(identity_file, "",

&private, &comment)) == 0)

Line 1414

Line 1517

identity_file, ssh_err(r));

}

/* XXX what about new-format keys? */

if (private->type != KEY_RSA1) {

if (private->type != KEY_ED25519 && private->type != KEY_XMSS &&

error("Comments are only supported for RSA1 keys.");

private_key_format != SSHKEY_PRIVATE_OPENSSH) {

error("Comments are only supported for keys stored in "

"the new format (-o).");

explicit_bzero(passphrase, strlen(passphrase));

sshkey_free(private);

exit(1);

}

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

if (comment)

printf("Old comment: %s\n", comment);

else

printf("No existing comment\n");

if (identity_comment) {

strlcpy(new_comment, identity_comment, sizeof(new_comment));

} else {

printf("Enter new comment: ");

printf("New comment: ");

fflush(stdout);

if (!fgets(new_comment, sizeof(new_comment), stdin)) {

explicit_bzero(passphrase, strlen(passphrase));

Line 1435

Line 1543

}

new_comment[strcspn(new_comment, "\n")] = '\0';

}

if (comment != NULL && strcmp(comment, new_comment) == 0) {

printf("No change to comment\n");

free(passphrase);

sshkey_free(private);

free(comment);

exit(0);

}

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

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

new_comment, use_new_format, new_format_cipher, rounds)) != 0) {

new_comment, private_key_format, openssh_format_cipher,

rounds)) != 0) {

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

identity_file, ssh_err(r));

explicit_bzero(passphrase, strlen(passphrase));

Line 1450

Line 1566

explicit_bzero(passphrase, strlen(passphrase));

free(passphrase);

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

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

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

sshkey_free(private);

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

Line 1468

Line 1584

free(comment);

printf("The comment in your key file has been changed.\n");

if (strlen(new_comment) > 0)

printf("Comment '%s' applied\n", new_comment);

else

printf("Comment removed\n");

exit(0);

}

Line 1505

Line 1625

static void

prepare_options_buf(struct sshbuf *c, int which)

{

size_t i;

sshbuf_reset(c);

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

certflags_command != NULL)

Line 1525

Line 1647

(certflags_flags & CERTOPT_USER_RC) != 0)

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

if ((which & OPTIONS_CRITICAL) != 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)

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

else {

add_string_option(c, cert_userext[i].key,

cert_userext[i].val);

}

static struct sshkey *

Line 1559

Line 1695

#endif /* ENABLE_PKCS11 */

}

/* Signer for sshkey_certify_custom that uses the agent */

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)

{

int *agent_fdp = (int *)ctx;

return ssh_agent_sign(*agent_fdp, key, sigp, lenp,

data, datalen, alg, compat);

}

static void

do_ca_sign(struct passwd *pw, int argc, char **argv)

do_ca_sign(struct passwd *pw, const char *ca_key_path, int prefer_agent,

unsigned long long cert_serial, int cert_serial_autoinc,

int argc, char **argv)

{

int r, i, fd;

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

u_int n;

struct sshkey *ca, *public;

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

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

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

FILE *f;

struct ssh_identitylist *agent_ids;

size_t j;

struct notifier_ctx *notifier = NULL;

#ifdef ENABLE_PKCS11

pkcs11_init(1);

#endif

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

if (pkcs11provider != NULL) {

/* If a PKCS#11 token was specified then try to use it */

if ((ca = load_pkcs11_key(tmp)) == NULL)

fatal("No PKCS#11 key matching %s found", ca_key_path);

} else

} else if (prefer_agent) {

ca = load_identity(tmp);

* Agent signature requested. Try to use agent after making

* sure the public key specified is actually present in the

* agent.

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

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

tmp, ssh_err(r));

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

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

ssh_err(r));

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

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

found = 0;

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

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

found = 1;

break;

}

if (!found)

fatal("CA key %s not found in agent", tmp);

ssh_free_identitylist(agent_ids);

ca->flags |= SSHKEY_FLAG_EXT;

} else {

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

ca = load_identity(tmp, NULL);

}

free(tmp);

if (key_type_name != NULL &&

sshkey_type_from_name(key_type_name) != ca->type) {

fatal("CA key type %s doesn't match specified %s",

sshkey_ssh_name(ca), key_type_name);

}

ca_fp = sshkey_fingerprint(ca, fingerprint_hash, SSH_FP_DEFAULT);

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

/* Split list of principals */

n = 0;

Line 1592

Line 1781

}

free(otmp);

}

if (n > SSHKEY_CERT_MAX_PRINCIPALS)

fatal("Too many certificate principals specified");

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",

__func__, tmp, ssh_err(r));

if (public->type != KEY_RSA && public->type != KEY_DSA &&

if (sshkey_is_cert(public))

public->type != KEY_ECDSA && public->type != KEY_ED25519)

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

__func__, tmp, sshkey_type(public));

Line 1618

Line 1808

OPTIONS_EXTENSIONS);

if ((r = sshkey_from_private(ca,

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

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

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

if (sshkey_certify(public, ca) != 0)

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

fatal("Couldn't not certify key %s", tmp);

if ((r = sshkey_certify_custom(public, ca,

key_type_name, sk_provider, agent_signer,

&agent_fd)) != 0)

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

tmp, ssh_err(r));

} else {

if (sshkey_is_sk(ca) &&

(ca->sk_flags & SSH_SK_USER_PRESENCE_REQD)) {

notifier = notify_start(0,

"Confirm user presence for key %s %s",

sshkey_type(ca), ca_fp);

}

r = sshkey_certify(public, ca, key_type_name,

sk_provider);

notify_complete(notifier);

if (r != 0)

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

tmp, ssh_err(r));

}

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

*cp = '\0';

Line 1653

Line 1861

sshkey_free(public);

free(out);

if (cert_serial_autoinc)

cert_serial++;

}

free(ca_fp);

#ifdef ENABLE_PKCS11

pkcs11_terminate();

#endif

Line 1674

Line 1885

return now + (u_int64_t)(secs * mul);

}

static u_int64_t

parse_absolute_time(const char *s)

{

struct tm tm;

time_t tt;

char buf[32], *fmt;

* POSIX strptime says "The application shall ensure that there

* is white-space or other non-alphanumeric characters between

* any two conversion specifications" so arrange things this way.

switch (strlen(s)) {

case 8:

fmt = "%Y-%m-%d";

snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2s", s, s + 4, s + 6);

break;

case 14:

fmt = "%Y-%m-%dT%H:%M:%S";

snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s:%.2s",

s, s + 4, s + 6, s + 8, s + 10, s + 12);

break;

default:

fatal("Invalid certificate time format %s", s);

}

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

if (strptime(buf, fmt, &tm) == NULL)

fatal("Invalid certificate time %s", s);

if ((tt = mktime(&tm)) < 0)

fatal("Certificate time %s cannot be represented", s);

return (u_int64_t)tt;

}

static void

parse_cert_times(char *timespec)

{

Line 1730

Line 1907

* from:to, where

* from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS

* from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "always"

* to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS

* to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "forever"

from = xstrdup(timespec);

to = strchr(from, ':');

Line 1741

Line 1918

if (*from == '-' || *from == '+')

cert_valid_from = parse_relative_time(from, now);

else

else if (strcmp(from, "always") == 0)

cert_valid_from = parse_absolute_time(from);

cert_valid_from = 0;

else if (parse_absolute_time(from, &cert_valid_from) != 0)

fatal("Invalid from time \"%s\"", from);

if (*to == '-' || *to == '+')

cert_valid_to = parse_relative_time(to, now);

else

else if (strcmp(to, "forever") == 0)

cert_valid_to = parse_absolute_time(to);

cert_valid_to = ~(u_int64_t)0;

else if (parse_absolute_time(to, &cert_valid_to) != 0)

fatal("Invalid to time \"%s\"", to);

if (cert_valid_to <= cert_valid_from)

fatal("Empty certificate validity interval");

Line 1757

Line 1938

static void

add_cert_option(char *opt)

{

char *val;

char *val, *cp;

int iscrit = 0;

if (strcasecmp(opt, "clear") == 0)

certflags_flags = 0;

Line 1781

Line 1963

certflags_flags &= ~CERTOPT_USER_RC;

else if (strcasecmp(opt, "permit-user-rc") == 0)

certflags_flags |= CERTOPT_USER_RC;

else if (strcasecmp(opt, "touch-required") == 0)

certflags_flags &= ~CERTOPT_NO_REQUIRE_USER_PRESENCE;

else if (strcasecmp(opt, "no-touch-required") == 0)

certflags_flags |= CERTOPT_NO_REQUIRE_USER_PRESENCE;

else if (strncasecmp(opt, "force-command=", 14) == 0) {

val = opt + 14;

if (*val == '\0')

Line 1797

Line 1983

if (addr_match_cidr_list(NULL, val) != 0)

fatal("Invalid source-address list");

certflags_src_addr = xstrdup(val);

} else if (strncasecmp(opt, "extension:", 10) == 0 ||

(iscrit = (strncasecmp(opt, "critical:", 9) == 0))) {

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

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

*cp++ = '\0';

cert_userext = xreallocarray(cert_userext, ncert_userext + 1,

sizeof(*cert_userext));

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 1822

Line 2020

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

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

strcmp(name, "permit-pty") == 0 ||

strcmp(name, "permit-user-rc") == 0))

strcmp(name, "permit-user-rc") == 0 ||

strcmp(name, "no-touch-required") == 0)) {

printf("\n");

else if (in_critical &&

} else if (in_critical &&

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

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

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

Line 1861

Line 2060

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

sshkey_cert_type(key));

printf(" Public key: %s %s\n", sshkey_type(key), key_fp);

printf(" Signing CA: %s %s\n",

printf(" Signing CA: %s %s (using %s)\n",

sshkey_type(key->cert->signature_key), ca_fp);

sshkey_type(key->cert->signature_key), ca_fp,

key->cert->signature_type);

printf(" Key ID: \"%s\"\n", key->cert->key_id);

printf(" Serial: %llu\n", (unsigned long long)key->cert->serial);

printf(" Valid: %s\n", valid);

Line 1898

Line 2098

struct stat st;

int r, is_stdin = 0, ok = 0;

FILE *f;

char *cp, line[2048];

char *cp, *line = NULL;

const char *path;

long int lnum = 0;

size_t linesize = 0;

u_long lnum = 0;

if (!have_identity)

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

if (strcmp(identity_file, "-") != 0 && stat(identity_file, &st) < 0)

if (strcmp(identity_file, "-") != 0 && stat(identity_file, &st) == -1)

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

path = identity_file;

Line 1915

Line 2116

} else if ((f = fopen(identity_file, "r")) == NULL)

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

while (read_keyfile_line(f, path, line, sizeof(line), &lnum) == 0) {

while (getline(&line, &linesize, f) != -1) {

lnum++;

sshkey_free(key);

key = NULL;

/* Trim leading space and comments */

Line 1923

Line 2125

if (*cp == '#' || *cp == '\0')

continue;

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

fatal("key_new");

fatal("sshkey_new");

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

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

lnum, ssh_err(r));

Line 1940

Line 2142

printf("%s:%lu:\n", path, lnum);

print_cert(key);

}

free(line);

sshkey_free(key);

fclose(f);

exit(ok ? 0 : 1);

Line 1967

Line 2170

}

static void

hash_to_blob(const char *cp, u_char **blobp, size_t *lenp,

const char *file, u_long lnum)

{

char *tmp;

size_t tlen;

struct sshbuf *b;

int r;

if (strncmp(cp, "SHA256:", 7) != 0)

fatal("%s:%lu: unsupported hash algorithm", file, lnum);

cp += 7;

* OpenSSH base64 hashes omit trailing '='

* characters; put them back for decode.

tlen = strlen(cp);

tmp = xmalloc(tlen + 4 + 1);

strlcpy(tmp, cp, tlen + 1);

while ((tlen % 4) != 0) {

tmp[tlen++] = '=';

tmp[tlen] = '\0';

}

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

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

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

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

free(tmp);

*lenp = sshbuf_len(b);

*blobp = xmalloc(*lenp);

memcpy(*blobp, sshbuf_ptr(b), *lenp);

sshbuf_free(b);

}

static void

update_krl_from_file(struct passwd *pw, const char *file, int wild_ca,

const struct sshkey *ca, struct ssh_krl *krl)

{

struct sshkey *key = NULL;

u_long lnum = 0;

char *path, *cp, *ep, line[SSH_MAX_PUBKEY_BYTES];

char *path, *cp, *ep, *line = NULL;

u_char *blob = NULL;

size_t blen = 0, linesize = 0;

unsigned long long serial, serial2;

int i, was_explicit_key, was_sha1, r;

int i, was_explicit_key, was_sha1, was_sha256, was_hash, r;

FILE *krl_spec;

path = tilde_expand_filename(file, pw->pw_uid);

Line 1987

Line 2227

if (!quiet)

printf("Revoking from %s\n", path);

while (read_keyfile_line(krl_spec, path, line, sizeof(line),

while (getline(&line, &linesize, krl_spec) != -1) {

&lnum) == 0) {

lnum++;

was_explicit_key = was_sha1 = 0;

was_explicit_key = was_sha1 = was_sha256 = was_hash = 0;

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

/* Trim trailing space, comments and strip \n */

for (i = 0, r = -1; cp[i] != '\0'; i++) {

Line 2054

Line 2294

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

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

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

} 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);

} else {

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

cp += 4;

Line 2063

Line 2308

cp += 5;

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

was_sha1 = 1;

} else {

} else if (strncasecmp(cp, "sha256:", 7) == 0) {

cp += 7;

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

was_sha256 = 1;

* Just try to process the line as a key.

* Parsing will fail if it isn't.

}

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

fatal("key_new");

fatal("sshkey_new");

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

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

path, lnum, ssh_err(r));

if (was_explicit_key)

r = ssh_krl_revoke_key_explicit(krl, key);

else if (was_sha1)

else if (was_sha1) {

r = ssh_krl_revoke_key_sha1(krl, key);

if (sshkey_fingerprint_raw(key,

else

SSH_DIGEST_SHA1, &blob, &blen) != 0) {

fatal("%s:%lu: fingerprint failed",

file, lnum);

}

r = ssh_krl_revoke_key_sha1(krl, blob, blen);

} else if (was_sha256) {

if (sshkey_fingerprint_raw(key,

SSH_DIGEST_SHA256, &blob, &blen) != 0) {

fatal("%s:%lu: fingerprint failed",

file, lnum);

}

r = ssh_krl_revoke_key_sha256(krl, blob, blen);

} else

r = ssh_krl_revoke_key(krl, key);

if (r != 0)

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

__func__, ssh_err(r));

freezero(blob, blen);

blob = NULL;

blen = 0;

sshkey_free(key);

}

if (strcmp(path, "-") != 0)

fclose(krl_spec);

free(line);

free(path);

}

static void

do_gen_krl(struct passwd *pw, int updating, int argc, char **argv)

do_gen_krl(struct passwd *pw, int updating, const char *ca_key_path,

unsigned long long krl_version, const char *krl_comment,

int argc, char **argv)

{

struct ssh_krl *krl;

struct stat sb;

Line 2127

Line 2393

else if ((krl = ssh_krl_init()) == NULL)

fatal("couldn't create KRL");

if (cert_serial != 0)

if (krl_version != 0)

ssh_krl_set_version(krl, cert_serial);

ssh_krl_set_version(krl, krl_version);

if (identity_comment != NULL)

if (krl_comment != NULL)

ssh_krl_set_comment(krl, identity_comment);

ssh_krl_set_comment(krl, krl_comment);

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

update_krl_from_file(pw, argv[i], wild_ca, ca, krl);

Line 2141

Line 2407

fatal("Couldn't generate KRL");

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

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

if (atomicio(vwrite, fd, (void *)sshbuf_ptr(kbuf), sshbuf_len(kbuf)) !=

if (atomicio(vwrite, fd, sshbuf_mutable_ptr(kbuf), sshbuf_len(kbuf)) !=

sshbuf_len(kbuf))

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

close(fd);

sshbuf_free(kbuf);

ssh_krl_free(krl);

if (ca != NULL)

sshkey_free(ca);

}

static void

Line 2180

Line 2445

}

#endif

static struct sshkey *

load_sign_key(const char *keypath, const struct sshkey *pubkey)

{

size_t i, slen, plen = strlen(keypath);

char *privpath = xstrdup(keypath);

const char *suffixes[] = { "-cert.pub", ".pub", NULL };

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

int r;

* If passed a public key filename, then try to locate the correponding

* private key. This lets us specify certificates on the command-line

* and have ssh-keygen find the appropriate private key.

for (i = 0; suffixes[i]; i++) {

slen = strlen(suffixes[i]);

if (plen <= slen ||

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

continue;

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

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

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

}

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

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

goto done;

}

if (!sshkey_equal_public(pubkey, privkey)) {

error("Public key %s doesn't match private %s",

keypath, privpath);

goto done;

}

if (sshkey_is_cert(pubkey) && !sshkey_is_cert(privkey)) {

* Graft the certificate onto the private key to make

* it capable of signing.

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

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

ssh_err(r));

goto done;

}

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

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

goto done;

}

/* success */

ret = privkey;

privkey = NULL;

done:

sshkey_free(privkey);

free(privpath);

return ret;

}

static int

sign_one(struct sshkey *signkey, const char *filename, int fd,

const char *sig_namespace, sshsig_signer *signer, void *signer_ctx)

{

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

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

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

if (!quiet) {

if (fd == STDIN_FILENO)

fprintf(stderr, "Signing data on standard input\n");

else

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

}

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

(signkey->sk_flags & SSH_SK_USER_PRESENCE_REQD)) {

if ((fp = sshkey_fingerprint(signkey, fingerprint_hash,

SSH_FP_DEFAULT)) == NULL)

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

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,

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

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

goto out;

}

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

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

goto out;

}

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

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

r = SSH_ERR_ALLOC_FAIL;

goto out;

}

if (fd == STDIN_FILENO) {

fputs(asig, stdout);

fflush(stdout);

} else {

xasprintf(&wfile, "%s.sig", filename);

if (confirm_overwrite(wfile)) {

if ((wfd = open(wfile, O_WRONLY|O_CREAT|O_TRUNC,

0666)) == -1) {

oerrno = errno;

error("Cannot open %s: %s",

wfile, strerror(errno));

errno = oerrno;

r = SSH_ERR_SYSTEM_ERROR;

goto out;

}

if (atomicio(vwrite, wfd, asig,

strlen(asig)) != strlen(asig)) {

oerrno = errno;

error("Cannot write to %s: %s",

wfile, strerror(errno));

errno = oerrno;

r = SSH_ERR_SYSTEM_ERROR;

goto out;

}

if (!quiet) {

fprintf(stderr, "Write signature to %s\n",

wfile);

}

/* success */

r = 0;

out:

free(wfile);

free(asig);

sshbuf_free(abuf);

sshbuf_free(sigbuf);

if (wfd != -1)

close(wfd);

return r;

}

static int

sign(const char *keypath, const char *sig_namespace, int argc, char **argv)

{

int i, fd = -1, r, ret = -1;

int agent_fd = -1;

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

sshsig_signer *signer = NULL;

/* Check file arguments. */

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

if (strcmp(argv[i], "-") != 0)

continue;

if (i > 0 || argc > 1)

fatal("Cannot sign mix of paths and standard input");

}

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

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

goto done;

}

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

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

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));

}

if (signer == NULL) {

/* Not using agent - try to load private key */

if ((privkey = load_sign_key(keypath, pubkey)) == NULL)

goto done;

signkey = privkey;

} else {

/* Will use key in agent */

signkey = pubkey;

}

if (argc == 0) {

if ((r = sign_one(signkey, "(stdin)", STDIN_FILENO,

sig_namespace, signer, &agent_fd)) != 0)

goto done;

} else {

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

if (strcmp(argv[i], "-") == 0)

fd = STDIN_FILENO;

else if ((fd = open(argv[i], O_RDONLY)) == -1) {

error("Cannot open %s for signing: %s",

argv[i], strerror(errno));

goto done;

}

if ((r = sign_one(signkey, argv[i], fd, sig_namespace,

signer, &agent_fd)) != 0)

goto done;

if (fd != STDIN_FILENO)

close(fd);

fd = -1;

}

ret = 0;

done:

if (fd != -1 && fd != STDIN_FILENO)

close(fd);

sshkey_free(pubkey);

sshkey_free(privkey);

return ret;

}

static int

verify(const char *signature, const char *sig_namespace, const char *principal,

const char *allowed_keys, const char *revoked_keys)

{

int r, ret = -1, sigfd = -1;

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

struct sshkey *sign_key = NULL;

char *fp = NULL;

struct sshkey_sig_details *sig_details = NULL;

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

if ((abuf = sshbuf_new()) == NULL)

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));

goto done;

}

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

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

return r;

}

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

&sign_key, &sig_details)) != 0)

goto done; /* sshsig_verify() prints error */

if ((fp = sshkey_fingerprint(sign_key, fingerprint_hash,

SSH_FP_DEFAULT)) == NULL)

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

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

if (sig_details != NULL) {

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

__func__, 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));

goto done;

}

if (allowed_keys != NULL &&

(r = sshsig_check_allowed_keys(allowed_keys, sign_key,

principal, sig_namespace)) != 0) {

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

goto done;

}

/* success */

ret = 0;

done:

if (!quiet) {

if (ret == 0) {

if ((fp = sshkey_fingerprint(sign_key, fingerprint_hash,

SSH_FP_DEFAULT)) == NULL) {

fatal("%s: sshkey_fingerprint failed",

__func__);

}

if (principal == NULL) {

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

sig_namespace, sshkey_type(sign_key), fp);

} else {

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

sig_namespace, principal,

sshkey_type(sign_key), fp);

}

} else {

printf("Could not verify signature.\n");

}

if (sigfd != -1)

close(sigfd);

sshbuf_free(sigbuf);

sshbuf_free(abuf);

sshkey_free(sign_key);

sshkey_sig_details_free(sig_details);

free(fp);

return ret;

}

static void

usage(void)

{

fprintf(stderr,

"usage: ssh-keygen [-q] [-b bits] [-t dsa | ecdsa | ed25519 | rsa | rsa1]\n"

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

" [-N new_passphrase] [-C comment] [-f output_keyfile]\n"

" ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]\n"

" [-N new_passphrase] [-w provider] [-x flags]\n"

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

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

" ssh-keygen -e [-m key_format] [-f input_keyfile]\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 [-P passphrase] [-C comment] [-f keyfile]\n"

" ssh-keygen -c [-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 2198

Line 2760

" ssh-keygen -D pkcs11\n");

#endif

fprintf(stderr,

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

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

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

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

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

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

#ifdef WITH_OPENSSL

" ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]\n"

" ssh-keygen -T output_file -f input_file [-v] [-a rounds] [-J num_lines]\n"

" ssh-keygen -f input_file -T output_file [-v] [-a rounds] [-J num_lines]\n"

" [-j start_line] [-K checkpt] [-W generator]\n"

#endif

" ssh-keygen -s ca_key -I certificate_identity [-h] [-n principals]\n"

" ssh-keygen -I certificate_identity -s ca_key [-hU] [-D pkcs11_provider]\n"

" [-O option] [-V validity_interval] [-z serial_number] file ...\n"

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

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

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

" ssh-keygen -A\n"

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

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

" file ...\n"

" ssh-keygen -Q -f krl_file file ...\n");

" ssh-keygen -Q -f krl_file 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 verify -f allowed_signers_file -I signer_identity\n"

" -n namespace -s signature_file [-r revocation_file]\n");

exit(1);

}

Line 2229

Line 2796

struct passwd *pw;

struct stat st;

int r, opt, type, fd;

int change_passphrase = 0, change_comment = 0, show_cert = 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 prefer_agent = 0, convert_to = 0, convert_from = 0;

int print_public = 0, print_generic = 0, cert_serial_autoinc = 0;

unsigned long long ull, cert_serial = 0;

char *identity_comment = NULL, *ca_key_path = NULL;

u_int32_t bits = 0;

uint8_t sk_flags = SSH_SK_USER_PRESENCE_REQD;

FILE *f;

const char *errstr;

int log_level = SYSLOG_LEVEL_INFO;

char *sign_op = NULL;

#ifdef WITH_OPENSSL

/* Moduli generation/screening */

char out_file[PATH_MAX], *checkpoint = NULL;

Line 2247

Line 2824

/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */

sanitise_stdfd();

#ifdef WITH_OPENSSL

OpenSSL_add_all_algorithms();

#endif

log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);

setlocale(LC_CTYPE, "");

/* we need this for the home * directory. */

pw = getpwuid(getuid());

if (!pw)

fatal("No user exists for uid %lu", (u_long)getuid());

if (gethostname(hostname, sizeof(hostname)) < 0)

if (gethostname(hostname, sizeof(hostname)) == -1)

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

/* Remaining characters: UYdw */

sk_provider = getenv("SSH_SK_PROVIDER");

while ((opt = getopt(argc, argv, "ABHLQXceghiklopquvxy"

"C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Z:"

/* Remaining character: d */

"a:b:f:g:j:m:n:r:s:t:z:")) != -1) {

while ((opt = getopt(argc, argv, "ABHLQUXceghiklopquvy"

"C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Y:Z:"

"a:b:f:g:j:m:n:r:s:t:w:x:z:")) != -1) {

switch (opt) {

case 'A':

gen_all_hostkeys = 1;

break;

case 'b':

bits = (u_int32_t)strtonum(optarg, 256, 32768, &errstr);

bits = (u_int32_t)strtonum(optarg, 1, UINT32_MAX,

&errstr);

if (errstr)

fatal("Bits has bad value %s (%s)",

optarg, errstr);

Line 2307

Line 2891

}

if (strcasecmp(optarg, "PKCS8") == 0) {

convert_format = FMT_PKCS8;

private_key_format = SSHKEY_PRIVATE_PKCS8;

break;

}

if (strcasecmp(optarg, "PEM") == 0) {

convert_format = FMT_PEM;

private_key_format = SSHKEY_PRIVATE_PEM;

break;

}

fatal("Unsupported conversion format \"%s\"", optarg);

Line 2318

Line 2904

cert_principals = optarg;

break;

case 'o':

use_new_format = 1;

/* no-op; new format is already the default */

break;

case 'p':

change_passphrase = 1;

Line 2348

Line 2934

add_cert_option(optarg);

break;

case 'Z':

new_format_cipher = optarg;

openssh_format_cipher = optarg;

break;

case 'C':

identity_comment = optarg;

Line 2357

Line 2943

quiet = 1;

break;

case 'e':

case 'x':

/* export key */

convert_to = 1;

break;

Line 2385

Line 2970

case 'D':

pkcs11provider = optarg;

break;

case 'U':

prefer_agent = 1;

break;

case 'u':

update_krl = 1;

break;

Line 2409

Line 2997

case 'V':

parse_cert_times(optarg);

break;

case 'Y':

sign_op = optarg;

break;

case 'w':

sk_provider = optarg;

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':

errno = 0;

if (*optarg == '+') {

cert_serial_autoinc = 1;

optarg++;

}

cert_serial = strtoull(optarg, &ep, 10);

if (*optarg < '0' || *optarg > '9' || *ep != '\0' ||

(errno == ERANGE && cert_serial == ULLONG_MAX))

Line 2426

Line 3041

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");

Line 2466

Line 3081

}

if (sk_provider == NULL)

sk_provider = "internal";

/* reinit */

log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);

argv += optind;

argc -= optind;

if (sign_op != NULL) {

if (cert_principals == NULL || *cert_principals == '\0') {

error("Too few arguments for sign/verify: "

"missing namespace");

exit(1);

}

if (strncmp(sign_op, "sign", 4) == 0) {

if (!have_identity) {

error("Too few arguments for sign: "

"missing key");

exit(1);

}

return sign(identity_file, cert_principals, argc, argv);

} else if (strncmp(sign_op, "check-novalidate", 16) == 0) {

if (ca_key_path == NULL) {

error("Too few arguments for check-novalidate: "

"missing signature file");

exit(1);

}

return verify(ca_key_path, cert_principals,

NULL, NULL, NULL);

} else if (strncmp(sign_op, "verify", 6) == 0) {

if (ca_key_path == NULL) {

error("Too few arguments for verify: "

"missing signature file");

exit(1);

}

if (!have_identity) {

error("Too few arguments for sign: "

"missing allowed keys file");

exit(1);

}

if (cert_key_id == NULL) {

error("Too few arguments for verify: "

"missing principal ID");

exit(1);

}

return verify(ca_key_path, cert_principals,

cert_key_id, identity_file, rr_hostname);

}

usage();

/* NOTREACHED */

}

if (ca_key_path != NULL) {

if (argc < 1 && !gen_krl) {

error("Too few arguments.");

Line 2491

Line 3153

}

#ifdef WITH_OPENSSL

if (gen_krl) {

do_gen_krl(pw, update_krl, argc, argv);

do_gen_krl(pw, update_krl, ca_key_path,

cert_serial, identity_comment, argc, argv);

return (0);

}

if (check_krl) {

Line 2502

Line 3165

if (ca_key_path != NULL) {

if (cert_key_id == NULL)

fatal("Must specify key id (-I) when certifying");

do_ca_sign(pw, argc, argv);

do_ca_sign(pw, ca_key_path, prefer_agent,

cert_serial, cert_serial_autoinc, argc, argv);

}

if (show_cert)

do_show_cert(pw);

if (delete_host || hash_hosts || find_host)

if (delete_host || hash_hosts || find_host) {

do_known_hosts(pw, rr_hostname);

do_known_hosts(pw, rr_hostname, find_host,

delete_host, hash_hosts);

}

if (pkcs11provider != NULL)

do_download(pw);

if (print_fingerprint || print_bubblebabble)

Line 2515

Line 3181

if (change_passphrase)

do_change_passphrase(pw);

if (change_comment)

do_change_comment(pw);

do_change_comment(pw, identity_comment);

#ifdef WITH_OPENSSL

if (convert_to)

do_convert_to(pw);

if (convert_from)

do_convert_from(pw);

#endif

#else /* WITH_OPENSSL */

if (convert_to || convert_from)

fatal("key conversion disabled at compile time");

#endif /* WITH_OPENSSL */

if (print_public)

do_print_public(pw);

if (rr_hostname != NULL) {

unsigned int n = 0;

if (have_identity) {

n = do_print_resource_record(pw,

n = do_print_resource_record(pw, identity_file,

identity_file, rr_hostname);

rr_hostname, print_generic);

if (n == 0)

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

exit(0);

} else {

n += do_print_resource_record(pw,

_PATH_HOST_RSA_KEY_FILE, rr_hostname);

_PATH_HOST_RSA_KEY_FILE, rr_hostname,

print_generic);

n += do_print_resource_record(pw,

_PATH_HOST_DSA_KEY_FILE, rr_hostname);

_PATH_HOST_DSA_KEY_FILE, rr_hostname,

print_generic);

n += do_print_resource_record(pw,

_PATH_HOST_ECDSA_KEY_FILE, rr_hostname);

_PATH_HOST_ECDSA_KEY_FILE, rr_hostname,

print_generic);

n += do_print_resource_record(pw,

_PATH_HOST_ED25519_KEY_FILE, rr_hostname);

_PATH_HOST_ED25519_KEY_FILE, rr_hostname,

print_generic);

n += do_print_resource_record(pw,

_PATH_HOST_XMSS_KEY_FILE, rr_hostname,

print_generic);

if (n == 0)

fatal("no keys found.");

exit(0);

Line 2605

Line 3281

if (!quiet)

printf("Generating public/private %s key pair.\n",

key_type_name);

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

switch (type) {

fatal("key_generate failed");

case KEY_ECDSA_SK:

case KEY_ED25519_SK:

if (!quiet) {

printf("You may need to touch your security key "

"to authorize key generation.\n");

}

fflush(stdout);

if (sshsk_enroll(type, sk_provider,

cert_key_id == NULL ? "ssh:" : cert_key_id,

sk_flags, NULL, &private, NULL) != 0)

exit(1); /* error message already printed */

break;

default:

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

fatal("sshkey_generate failed");

break;

}

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

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

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

if (!have_identity)

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

Line 2617

Line 3309

snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",

pw->pw_dir, _PATH_SSH_USER_DIR);

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

if (stat(dotsshdir, &st) < 0) {

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

if (errno != ENOENT) {

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

strerror(errno));

} else if (mkdir(dotsshdir, 0700) < 0) {

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

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

dotsshdir, strerror(errno));

} else if (!quiet)

Line 2629

Line 3321

}

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

if (stat(identity_file, &st) >= 0) {

if (!confirm_overwrite(identity_file))

char yesno[3];

exit(1);

printf("%s already exists.\n", identity_file);

printf("Overwrite (y/n)? ");

fflush(stdout);

if (fgets(yesno, sizeof(yesno), stdin) == NULL)

exit(1);

if (yesno[0] != 'y' && yesno[0] != 'Y')

exit(1);

}

/* Ask for a passphrase (twice). */

if (identity_passphrase)

passphrase1 = xstrdup(identity_passphrase);

Line 2677

Line 3361

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

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

comment, use_new_format, new_format_cipher, rounds)) != 0) {

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

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

identity_file, ssh_err(r));

explicit_bzero(passphrase1, strlen(passphrase1));

Line 2703

Line 3387

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

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

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

fclose(f);

if (ferror(f) || fclose(f) != 0)

fatal("write public failed: %s", strerror(errno));

if (!quiet) {

fp = sshkey_fingerprint(public, fingerprint_hash,