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sonic-openssh
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- markus@cvs.openbsd.org 2001/12/27 18:22:16 

[auth1.c authfile.c auth-rsa.c dh.c kexdh.c kexgex.c key.c rsa.c scard.c ssh-agent.c sshconnect1.c sshd.c ssh-dss.c]
     call fatal() for openssl allocation failures
This commit is contained in:
Damien Miller 2002-01-22 23:09:22 +11:00
Родитель 154dda73a8
Коммит da7551677b
14 изменённых файлов: 146 добавлений и 143 удалений
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6
ChangeLog
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@ -35,6 +35,10 @@
- markus@cvs.openbsd.org 2001/12/27 18:10:29
[ssh-keygen.c]
-t is only needed for key generation (unbreaks -i, -e, etc).
- markus@cvs.openbsd.org 2001/12/27 18:22:16
[auth1.c authfile.c auth-rsa.c dh.c kexdh.c kexgex.c key.c rsa.c]
[scard.c ssh-agent.c sshconnect1.c sshd.c ssh-dss.c]
call fatal() for openssl allocation failures
20020121
- (djm) Rework ssh-rand-helper:
@ -7182,4 +7186,4 @@
- Wrote replacements for strlcpy and mkdtemp
- Released 1.0pre1
$Id: ChangeLog,v 1.1732 2002/01/22 12:08:16 djm Exp $
$Id: ChangeLog,v 1.1733 2002/01/22 12:09:22 djm Exp $

11
auth-rsa.c
Просмотреть файл

@ -14,7 +14,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: auth-rsa.c,v 1.46 2001/12/18 10:06:24 jakob Exp $");
RCSID("$OpenBSD: auth-rsa.c,v 1.47 2001/12/27 18:22:16 markus Exp $");
#include <openssl/rsa.h>
#include <openssl/md5.h>
@ -68,12 +68,15 @@ auth_rsa_challenge_dialog(RSA *pk)
u_int i;
int plen, len;
encrypted_challenge = BN_new();
challenge = BN_new();
if ((encrypted_challenge = BN_new()) == NULL)
fatal("auth_rsa_challenge_dialog: BN_new() failed");
if ((challenge = BN_new()) == NULL)
fatal("auth_rsa_challenge_dialog: BN_new() failed");
/* Generate a random challenge. */
BN_rand(challenge, 256, 0, 0);
ctx = BN_CTX_new();
if ((ctx = BN_CTX_new()) == NULL)
fatal("auth_rsa_challenge_dialog: BN_CTX_new() failed");
BN_mod(challenge, challenge, pk->n, ctx);
BN_CTX_free(ctx);

31
auth1.c
Просмотреть файл

@ -10,7 +10,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: auth1.c,v 1.28 2001/12/25 18:53:00 markus Exp $");
RCSID("$OpenBSD: auth1.c,v 1.29 2001/12/27 18:22:16 markus Exp $");
#include "xmalloc.h"
#include "rsa.h"
@ -66,7 +66,7 @@ do_authloop(Authctxt *authctxt)
{
int authenticated = 0;
u_int bits;
RSA *client_host_key;
Key *client_host_key;
BIGNUM *n;
char *client_user, *password;
char info[1024];
@ -202,24 +202,20 @@ do_authloop(Authctxt *authctxt)
client_user = packet_get_string(&ulen);
/* Get the client host key. */
client_host_key = RSA_new();
if (client_host_key == NULL)
fatal("RSA_new failed");
client_host_key->e = BN_new();
client_host_key->n = BN_new();
if (client_host_key->e == NULL || client_host_key->n == NULL)
fatal("BN_new failed");
client_host_key = key_new(KEY_RSA1);
bits = packet_get_int();
packet_get_bignum(client_host_key->e, &elen);
packet_get_bignum(client_host_key->n, &nlen);
packet_get_bignum(client_host_key->rsa->e, &elen);
packet_get_bignum(client_host_key->rsa->n, &nlen);
if (bits != BN_num_bits(client_host_key->n))
if (bits != BN_num_bits(client_host_key->rsa->n))
verbose("Warning: keysize mismatch for client_host_key: "
"actual %d, announced %d", BN_num_bits(client_host_key->n), bits);
"actual %d, announced %d",
BN_num_bits(client_host_key->rsa->n), bits);
packet_integrity_check(plen, (4 + ulen) + 4 + elen + nlen, type);
authenticated = auth_rhosts_rsa(pw, client_user, client_host_key);
RSA_free(client_host_key);
authenticated = auth_rhosts_rsa(pw, client_user,
client_host_key->rsa);
key_free(client_host_key);
snprintf(info, sizeof info, " ruser %.100s", client_user);
break;
@ -230,9 +226,8 @@ do_authloop(Authctxt *authctxt)
break;
}
/* RSA authentication requested. */
n = BN_new();
if (n == NULL)
fatal("BN_new failed");
if ((n = BN_new()) == NULL)
fatal("do_authloop: BN_new failed");
packet_get_bignum(n, &nlen);
packet_integrity_check(plen, nlen, type);
authenticated = auth_rsa(pw, n);

16
authfile.c
Просмотреть файл

@ -36,7 +36,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: authfile.c,v 1.42 2001/12/19 17:16:13 stevesk Exp $");
RCSID("$OpenBSD: authfile.c,v 1.43 2001/12/27 18:22:16 markus Exp $");
#include <openssl/err.h>
#include <openssl/evp.h>
@ -316,8 +316,6 @@ key_load_private_rsa1(int fd, const char *filename, const char *passphrase,
char *cp;
CipherContext ciphercontext;
Cipher *cipher;
BN_CTX *ctx;
BIGNUM *aux;
Key *prv = NULL;
len = lseek(fd, (off_t) 0, SEEK_END);
@ -406,17 +404,7 @@ key_load_private_rsa1(int fd, const char *filename, const char *passphrase,
buffer_get_bignum(&decrypted, prv->rsa->p); /* q */
/* calculate p-1 and q-1 */
ctx = BN_CTX_new();
aux = BN_new();
BN_sub(aux, prv->rsa->q, BN_value_one());
BN_mod(prv->rsa->dmq1, prv->rsa->d, aux, ctx);
BN_sub(aux, prv->rsa->p, BN_value_one());
BN_mod(prv->rsa->dmp1, prv->rsa->d, aux, ctx);
BN_clear_free(aux);
BN_CTX_free(ctx);
rsa_generate_additional_parameters(prv->rsa);
buffer_free(&decrypted);
close(fd);

21
dh.c
Просмотреть файл

@ -23,7 +23,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: dh.c,v 1.17 2001/06/23 15:12:18 itojun Exp $");
RCSID("$OpenBSD: dh.c,v 1.18 2001/12/27 18:22:16 markus Exp $");
#include "xmalloc.h"
@ -78,8 +78,10 @@ parse_prime(int linenum, char *line, struct dhgroup *dhg)
if (cp != NULL || *prime == '\0')
goto fail;
dhg->g = BN_new();
dhg->p = BN_new();
if ((dhg->g = BN_new()) == NULL)
fatal("parse_prime: BN_new failed");
if ((dhg->p = BN_new()) == NULL)
fatal("parse_prime: BN_new failed");
if (BN_hex2bn(&dhg->g, gen) == 0)
goto failclean;
@ -202,8 +204,7 @@ dh_gen_key(DH *dh, int need)
do {
if (dh->priv_key != NULL)
BN_free(dh->priv_key);
dh->priv_key = BN_new();
if (dh->priv_key == NULL)
if ((dh->priv_key = BN_new()) == NULL)
fatal("dh_gen_key: BN_new failed");
/* generate a 2*need bits random private exponent */
if (!BN_rand(dh->priv_key, 2*need, 0, 0))
@ -225,9 +226,8 @@ dh_new_group_asc(const char *gen, const char *modulus)
{
DH *dh;
dh = DH_new();
if (dh == NULL)
fatal("DH_new");
if ((dh = DH_new()) == NULL)
fatal("dh_new_group_asc: DH_new");
if (BN_hex2bn(&dh->p, modulus) == 0)
fatal("BN_hex2bn p");
@ -247,9 +247,8 @@ dh_new_group(BIGNUM *gen, BIGNUM *modulus)
{
DH *dh;
dh = DH_new();
if (dh == NULL)
fatal("DH_new");
if ((dh = DH_new()) == NULL)
fatal("dh_new_group: DH_new");
dh->p = modulus;
dh->g = gen;

14
kexdh.c
Просмотреть файл

@ -23,7 +23,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: kexdh.c,v 1.7 2001/09/17 19:27:15 stevesk Exp $");
RCSID("$OpenBSD: kexdh.c,v 1.8 2001/12/27 18:22:16 markus Exp $");
#include <openssl/crypto.h>
#include <openssl/bn.h>
@ -129,8 +129,7 @@ kexdh_client(Kex *kex)
fatal("server_host_key verification failed");
/* DH paramter f, server public DH key */
dh_server_pub = BN_new();
if (dh_server_pub == NULL)
if ((dh_server_pub = BN_new()) == NULL)
fatal("dh_server_pub == NULL");
packet_get_bignum2(dh_server_pub, &dlen);
@ -154,7 +153,8 @@ kexdh_client(Kex *kex)
#ifdef DEBUG_KEXDH
dump_digest("shared secret", kbuf, kout);
#endif
shared_secret = BN_new();
if ((shared_secret = BN_new()) == NULL)
fatal("kexdh_client: BN_new failed");
BN_bin2bn(kbuf, kout, shared_secret);
memset(kbuf, 0, klen);
xfree(kbuf);
@ -217,8 +217,7 @@ kexdh_server(Kex *kex)
fatal("Unsupported hostkey type %d", kex->hostkey_type);
/* key, cert */
dh_client_pub = BN_new();
if (dh_client_pub == NULL)
if ((dh_client_pub = BN_new()) == NULL)
fatal("dh_client_pub == NULL");
packet_get_bignum2(dh_client_pub, &dlen);
@ -244,7 +243,8 @@ kexdh_server(Kex *kex)
#ifdef DEBUG_KEXDH
dump_digest("shared secret", kbuf, kout);
#endif
shared_secret = BN_new();
if ((shared_secret = BN_new()) == NULL)
fatal("kexdh_server: BN_new failed");
BN_bin2bn(kbuf, kout, shared_secret);
memset(kbuf, 0, klen);
xfree(kbuf);

14
kexgex.c
Просмотреть файл

@ -24,7 +24,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: kexgex.c,v 1.10 2001/12/05 10:06:12 deraadt Exp $");
RCSID("$OpenBSD: kexgex.c,v 1.11 2001/12/27 18:22:16 markus Exp $");
#include <openssl/bn.h>
@ -183,8 +183,7 @@ kexgex_client(Kex *kex)
fatal("server_host_key verification failed");
/* DH paramter f, server public DH key */
dh_server_pub = BN_new();
if (dh_server_pub == NULL)
if ((dh_server_pub = BN_new()) == NULL)
fatal("dh_server_pub == NULL");
packet_get_bignum2(dh_server_pub, &dlen);
@ -208,7 +207,8 @@ kexgex_client(Kex *kex)
#ifdef DEBUG_KEXDH
dump_digest("shared secret", kbuf, kout);
#endif
shared_secret = BN_new();
if ((shared_secret = BN_new()) == NULL)
fatal("kexgex_client: BN_new failed");
BN_bin2bn(kbuf, kout, shared_secret);
memset(kbuf, 0, klen);
xfree(kbuf);
@ -315,8 +315,7 @@ kexgex_server(Kex *kex)
packet_read_expect(&plen, SSH2_MSG_KEX_DH_GEX_INIT);
/* key, cert */
dh_client_pub = BN_new();
if (dh_client_pub == NULL)
if ((dh_client_pub = BN_new()) == NULL)
fatal("dh_client_pub == NULL");
packet_get_bignum2(dh_client_pub, &dlen);
@ -342,7 +341,8 @@ kexgex_server(Kex *kex)
#ifdef DEBUG_KEXDH
dump_digest("shared secret", kbuf, kout);
#endif
shared_secret = BN_new();
if ((shared_secret = BN_new()) == NULL)
fatal("kexgex_server: BN_new failed");
BN_bin2bn(kbuf, kout, shared_secret);
memset(kbuf, 0, klen);
xfree(kbuf);

52
key.c
Просмотреть файл

@ -32,7 +32,7 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "includes.h"
RCSID("$OpenBSD: key.c,v 1.37 2001/12/25 18:49:56 markus Exp $");
RCSID("$OpenBSD: key.c,v 1.38 2001/12/27 18:22:16 markus Exp $");
#include <openssl/evp.h>
@ -60,22 +60,25 @@ key_new(int type)
switch (k->type) {
case KEY_RSA1:
case KEY_RSA:
rsa = RSA_new();
rsa->n = BN_new();
rsa->e = BN_new();
if (rsa == NULL || rsa->n == NULL || rsa->e == NULL)
fatal("key_new: malloc failure");
if ((rsa = RSA_new()) == NULL)
fatal("key_new: RSA_new failed");
if ((rsa->n = BN_new()) == NULL)
fatal("key_new: BN_new failed");
if ((rsa->e = BN_new()) == NULL)
fatal("key_new: BN_new failed");
k->rsa = rsa;
break;
case KEY_DSA:
dsa = DSA_new();
dsa->p = BN_new();
dsa->q = BN_new();
dsa->g = BN_new();
dsa->pub_key = BN_new();
if (dsa == NULL || dsa->p == NULL || dsa->q == NULL ||
dsa->g == NULL || dsa->pub_key == NULL)
fatal("key_new: malloc failure");
if ((dsa = DSA_new()) == NULL)
fatal("key_new: DSA_new failed");
if ((dsa->p = BN_new()) == NULL)
fatal("key_new: BN_new failed");
if ((dsa->q = BN_new()) == NULL)
fatal("key_new: BN_new failed");
if ((dsa->g = BN_new()) == NULL)
fatal("key_new: BN_new failed");
if ((dsa->pub_key = BN_new()) == NULL)
fatal("key_new: BN_new failed");
k->dsa = dsa;
break;
case KEY_UNSPEC:
@ -93,15 +96,22 @@ key_new_private(int type)
switch (k->type) {
case KEY_RSA1:
case KEY_RSA:
k->rsa->d = BN_new();
k->rsa->iqmp = BN_new();
k->rsa->q = BN_new();
k->rsa->p = BN_new();
k->rsa->dmq1 = BN_new();
k->rsa->dmp1 = BN_new();
if ((k->rsa->d = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->iqmp = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->q = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->p = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->dmq1 = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
if ((k->rsa->dmp1 = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
break;
case KEY_DSA:
k->dsa->priv_key = BN_new();
if ((k->dsa->priv_key = BN_new()) == NULL)
fatal("key_new_private: BN_new failed");
break;
case KEY_UNSPEC:
break;

11
rsa.c
Просмотреть файл

@ -60,7 +60,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: rsa.c,v 1.23 2001/06/27 05:42:24 markus Exp $");
RCSID("$OpenBSD: rsa.c,v 1.24 2001/12/27 18:22:16 markus Exp $");
#include "rsa.h"
#include "log.h"
@ -120,14 +120,17 @@ rsa_private_decrypt(BIGNUM *out, BIGNUM *in, RSA *key)
return len;
}
/* calculate p-1 and q-1 */
void
rsa_generate_additional_parameters(RSA *rsa)
{
BIGNUM *aux;
BN_CTX *ctx;
/* Generate additional parameters */
aux = BN_new();
ctx = BN_CTX_new();
if ((aux = BN_new()) == NULL)
fatal("rsa_generate_additional_parameters: BN_new failed");
if ((ctx = BN_CTX_new()) == NULL)
fatal("rsa_generate_additional_parameters: BN_CTX_new failed");
BN_sub(aux, rsa->q, BN_value_one());
BN_mod(rsa->dmq1, rsa->d, aux, ctx);

5
scard.c
Просмотреть файл

@ -24,7 +24,7 @@
#include "includes.h"
#ifdef SMARTCARD
RCSID("$OpenBSD: scard.c,v 1.16 2001/12/19 07:18:56 deraadt Exp $");
RCSID("$OpenBSD: scard.c,v 1.17 2001/12/27 18:22:16 markus Exp $");
#include <openssl/engine.h>
#include <sectok.h>
@ -320,7 +320,8 @@ sc_get_engine(void)
smart_rsa.rsa_sign = def->rsa_sign;
smart_rsa.rsa_verify = def->rsa_verify;
smart_engine = ENGINE_new();
if ((smart_engine = ENGINE_new()) == NULL)
fatal("ENGINE_new failed");
ENGINE_set_id(smart_engine, "sectok");
ENGINE_set_name(smart_engine, "libsectok");

7
ssh-agent.c
Просмотреть файл

@ -1,4 +1,4 @@
/* $OpenBSD: ssh-agent.c,v 1.75 2001/12/19 07:18:56 deraadt Exp $ */
/* $OpenBSD: ssh-agent.c,v 1.76 2001/12/27 18:22:16 markus Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
@ -36,7 +36,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: ssh-agent.c,v 1.75 2001/12/19 07:18:56 deraadt Exp $");
RCSID("$OpenBSD: ssh-agent.c,v 1.76 2001/12/27 18:22:16 markus Exp $");
#include <openssl/evp.h>
#include <openssl/md5.h>
@ -186,7 +186,8 @@ process_authentication_challenge1(SocketEntry *e)
buffer_init(&msg);
key = key_new(KEY_RSA1);
challenge = BN_new();
if ((challenge = BN_new()) == NULL)
fatal("process_authentication_challenge1: BN_new failed");
buffer_get_int(&e->input); /* ignored */
buffer_get_bignum(&e->input, key->rsa->e);

11
ssh-dss.c
Просмотреть файл

@ -23,7 +23,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: ssh-dss.c,v 1.10 2001/12/05 10:06:12 deraadt Exp $");
RCSID("$OpenBSD: ssh-dss.c,v 1.11 2001/12/27 18:22:16 markus Exp $");
#include <openssl/bn.h>
#include <openssl/evp.h>
@ -158,9 +158,12 @@ ssh_dss_verify(
}
/* parse signature */
sig = DSA_SIG_new();
sig->r = BN_new();
sig->s = BN_new();
if ((sig = DSA_SIG_new()) == NULL)
fatal("ssh_dss_verify: DSA_SIG_new failed");
if ((sig->r = BN_new()) == NULL)
fatal("ssh_dss_verify: BN_new failed");
if ((sig->s = BN_new()) == NULL)
fatal("ssh_dss_verify: BN_new failed");
BN_bin2bn(sigblob, INTBLOB_LEN, sig->r);
BN_bin2bn(sigblob+ INTBLOB_LEN, INTBLOB_LEN, sig->s);

85
sshconnect1.c
Просмотреть файл

@ -13,7 +13,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: sshconnect1.c,v 1.42 2001/12/19 07:18:56 deraadt Exp $");
RCSID("$OpenBSD: sshconnect1.c,v 1.43 2001/12/27 18:22:16 markus Exp $");
#include <openssl/bn.h>
#include <openssl/evp.h>
@ -76,8 +76,8 @@ try_agent_authentication(void)
if (!auth)
return 0;
challenge = BN_new();
if ((challenge = BN_new()) == NULL)
fatal("try_agent_authentication: BN_new failed");
/* Loop through identities served by the agent. */
for (key = ssh_get_first_identity(auth, &comment, 1);
key != NULL;
@ -241,7 +241,8 @@ try_rsa_authentication(int idx)
packet_disconnect("Protocol error during RSA authentication: %d", type);
/* Get the challenge from the packet. */
challenge = BN_new();
if ((challenge = BN_new()) == NULL)
fatal("try_rsa_authentication: BN_new failed");
packet_get_bignum(challenge, &clen);
packet_integrity_check(plen, clen, type);
@ -355,7 +356,8 @@ try_rhosts_rsa_authentication(const char *local_user, Key * host_key)
packet_disconnect("Protocol error during RSA authentication: %d", type);
/* Get the challenge from the packet. */
challenge = BN_new();
if ((challenge = BN_new()) == NULL)
fatal("try_rhosts_rsa_authentication: BN_new failed");
packet_get_bignum(challenge, &clen);
packet_integrity_check(plen, clen, type);
@ -912,9 +914,7 @@ ssh_kex(char *host, struct sockaddr *hostaddr)
{
int i;
BIGNUM *key;
RSA *host_key;
RSA *public_key;
Key k;
Key *host_key, *server_key;
int bits, rbits;
int ssh_cipher_default = SSH_CIPHER_3DES;
u_char session_key[SSH_SESSION_KEY_LENGTH];
@ -934,32 +934,28 @@ ssh_kex(char *host, struct sockaddr *hostaddr)
cookie[i] = packet_get_char();
/* Get the public key. */
public_key = RSA_new();
bits = packet_get_int();/* bits */
public_key->e = BN_new();
packet_get_bignum(public_key->e, &clen);
server_key = key_new(KEY_RSA1);
bits = packet_get_int();
packet_get_bignum(server_key->rsa->e, &clen);
sum_len += clen;
public_key->n = BN_new();
packet_get_bignum(public_key->n, &clen);
packet_get_bignum(server_key->rsa->n, &clen);
sum_len += clen;
rbits = BN_num_bits(public_key->n);
rbits = BN_num_bits(server_key->rsa->n);
if (bits != rbits) {
log("Warning: Server lies about size of server public key: "
"actual size is %d bits vs. announced %d.", rbits, bits);
log("Warning: This may be due to an old implementation of ssh.");
}
/* Get the host key. */
host_key = RSA_new();
bits = packet_get_int();/* bits */
host_key->e = BN_new();
packet_get_bignum(host_key->e, &clen);
host_key = key_new(KEY_RSA1);
bits = packet_get_int();
packet_get_bignum(host_key->rsa->e, &clen);
sum_len += clen;
host_key->n = BN_new();
packet_get_bignum(host_key->n, &clen);
packet_get_bignum(host_key->rsa->n, &clen);
sum_len += clen;
rbits = BN_num_bits(host_key->n);
rbits = BN_num_bits(host_key->rsa->n);
if (bits != rbits) {
log("Warning: Server lies about size of server host key: "
"actual size is %d bits vs. announced %d.", rbits, bits);
@ -974,19 +970,17 @@ ssh_kex(char *host, struct sockaddr *hostaddr)
supported_authentications = packet_get_int();
debug("Received server public key (%d bits) and host key (%d bits).",
BN_num_bits(public_key->n), BN_num_bits(host_key->n));
BN_num_bits(server_key->rsa->n), BN_num_bits(host_key->rsa->n));
packet_integrity_check(payload_len,
8 + 4 + sum_len + 0 + 4 + 0 + 0 + 4 + 4 + 4,
SSH_SMSG_PUBLIC_KEY);
k.type = KEY_RSA1;
k.rsa = host_key;
if (verify_host_key(host, hostaddr, &k) == -1)
if (verify_host_key(host, hostaddr, host_key) == -1)
fatal("Host key verification failed.");
client_flags = SSH_PROTOFLAG_SCREEN_NUMBER | SSH_PROTOFLAG_HOST_IN_FWD_OPEN;
compute_session_id(session_id, cookie, host_key->n, public_key->n);
compute_session_id(session_id, cookie, host_key->rsa->n, server_key->rsa->n);
/* Generate a session key. */
arc4random_stir();
@ -1008,7 +1002,8 @@ ssh_kex(char *host, struct sockaddr *hostaddr)
* is the highest byte of the integer. The session key is xored with
* the first 16 bytes of the session id.
*/
key = BN_new();
if ((key = BN_new()) == NULL)
fatal("respond_to_rsa_challenge: BN_new failed");
BN_set_word(key, 0);
for (i = 0; i < SSH_SESSION_KEY_LENGTH; i++) {
BN_lshift(key, key, 8);
@ -1022,35 +1017,35 @@ ssh_kex(char *host, struct sockaddr *hostaddr)
* Encrypt the integer using the public key and host key of the
* server (key with smaller modulus first).
*/
if (BN_cmp(public_key->n, host_key->n) < 0) {
if (BN_cmp(server_key->rsa->n, host_key->rsa->n) < 0) {
/* Public key has smaller modulus. */
if (BN_num_bits(host_key->n) <
BN_num_bits(public_key->n) + SSH_KEY_BITS_RESERVED) {
fatal("respond_to_rsa_challenge: host_key %d < public_key %d + "
if (BN_num_bits(host_key->rsa->n) <
BN_num_bits(server_key->rsa->n) + SSH_KEY_BITS_RESERVED) {
fatal("respond_to_rsa_challenge: host_key %d < server_key %d + "
"SSH_KEY_BITS_RESERVED %d",
BN_num_bits(host_key->n),
BN_num_bits(public_key->n),
BN_num_bits(host_key->rsa->n),
BN_num_bits(server_key->rsa->n),
SSH_KEY_BITS_RESERVED);
}
rsa_public_encrypt(key, key, public_key);
rsa_public_encrypt(key, key, host_key);
rsa_public_encrypt(key, key, server_key->rsa);
rsa_public_encrypt(key, key, host_key->rsa);
} else {
/* Host key has smaller modulus (or they are equal). */
if (BN_num_bits(public_key->n) <
BN_num_bits(host_key->n) + SSH_KEY_BITS_RESERVED) {
fatal("respond_to_rsa_challenge: public_key %d < host_key %d + "
if (BN_num_bits(server_key->rsa->n) <
BN_num_bits(host_key->rsa->n) + SSH_KEY_BITS_RESERVED) {
fatal("respond_to_rsa_challenge: server_key %d < host_key %d + "
"SSH_KEY_BITS_RESERVED %d",
BN_num_bits(public_key->n),
BN_num_bits(host_key->n),
BN_num_bits(server_key->rsa->n),
BN_num_bits(host_key->rsa->n),
SSH_KEY_BITS_RESERVED);
}
rsa_public_encrypt(key, key, host_key);
rsa_public_encrypt(key, key, public_key);
rsa_public_encrypt(key, key, host_key->rsa);
rsa_public_encrypt(key, key, server_key->rsa);
}
/* Destroy the public keys since we no longer need them. */
RSA_free(public_key);
RSA_free(host_key);
key_free(server_key);
key_free(host_key);
if (options.cipher == SSH_CIPHER_NOT_SET) {
if (cipher_mask_ssh1(1) & supported_ciphers & (1 << ssh_cipher_default))

5
sshd.c
Просмотреть файл

@ -40,7 +40,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: sshd.c,v 1.217 2001/12/19 07:18:56 deraadt Exp $");
RCSID("$OpenBSD: sshd.c,v 1.218 2001/12/27 18:22:16 markus Exp $");
#include <openssl/dh.h>
#include <openssl/bn.h>
@ -1352,7 +1352,8 @@ do_ssh1_kex(void)
debug("Encryption type: %.200s", cipher_name(cipher_type));
/* Get the encrypted integer. */
session_key_int = BN_new();
if ((session_key_int = BN_new()) == NULL)
fatal("do_ssh1_kex: BN_new failed");
packet_get_bignum(session_key_int, &slen);
protocol_flags = packet_get_int();