*/
#include "includes.h"
-RCSID("$OpenBSD: sshconnect1.c,v 1.41 2001/10/06 11:18:19 markus Exp $");
+RCSID("$OpenBSD: sshconnect1.c,v 1.48 2002/02/11 16:15:46 markus Exp $");
#include <openssl/bn.h>
-#include <openssl/evp.h>
+#include <openssl/md5.h>
#ifdef KRB4
#include <krb.h>
AuthenticationConnection *auth;
u_char response[16];
u_int i;
- int plen, clen;
Key *key;
BIGNUM *challenge;
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;
- key = ssh_get_next_identity(auth, &comment, 1)) {
+ key != NULL;
+ key = ssh_get_next_identity(auth, &comment, 1)) {
/* Try this identity. */
debug("Trying RSA authentication via agent with '%.100s'", comment);
packet_write_wait();
/* Wait for server's response. */
- type = packet_read(&plen);
+ type = packet_read();
/* The server sends failure if it doesn\'t like our key or
does not support RSA authentication. */
packet_disconnect("Protocol error during RSA authentication: %d",
type);
- packet_get_bignum(challenge, &clen);
-
- packet_integrity_check(plen, clen, type);
+ packet_get_bignum(challenge);
+ packet_check_eom();
debug("Received RSA challenge from server.");
packet_write_wait();
/* Wait for response from the server. */
- type = packet_read(&plen);
+ type = packet_read();
/* The server returns success if it accepted the authentication. */
if (type == SSH_SMSG_SUCCESS) {
BIGNUM *challenge;
Key *public, *private;
char buf[300], *passphrase, *comment, *authfile;
- int i, type, quit, plen, clen;
+ int i, type, quit;
public = options.identity_keys[idx];
authfile = options.identity_files[idx];
packet_write_wait();
/* Wait for server's response. */
- type = packet_read(&plen);
+ type = packet_read();
/*
* The server responds with failure if it doesn\'t like our key or
packet_disconnect("Protocol error during RSA authentication: %d", type);
/* Get the challenge from the packet. */
- challenge = BN_new();
- packet_get_bignum(challenge, &clen);
-
- packet_integrity_check(plen, clen, type);
+ if ((challenge = BN_new()) == NULL)
+ fatal("try_rsa_authentication: BN_new failed");
+ packet_get_bignum(challenge);
+ packet_check_eom();
debug("Received RSA challenge from server.");
packet_write_wait();
/* Expect the server to reject it... */
- packet_read_expect(&plen, SSH_SMSG_FAILURE);
+ packet_read_expect(SSH_SMSG_FAILURE);
BN_clear_free(challenge);
return 0;
}
BN_clear_free(challenge);
/* Wait for response from the server. */
- type = packet_read(&plen);
+ type = packet_read();
if (type == SSH_SMSG_SUCCESS) {
debug("RSA authentication accepted by server.");
return 1;
{
int type;
BIGNUM *challenge;
- int plen, clen;
debug("Trying rhosts or /etc/hosts.equiv with RSA host authentication.");
packet_write_wait();
/* Wait for server's response. */
- type = packet_read(&plen);
+ type = packet_read();
/* The server responds with failure if it doesn't admit our
.rhosts authentication or doesn't know our host key. */
packet_disconnect("Protocol error during RSA authentication: %d", type);
/* Get the challenge from the packet. */
- challenge = BN_new();
- packet_get_bignum(challenge, &clen);
-
- packet_integrity_check(plen, clen, type);
+ if ((challenge = BN_new()) == NULL)
+ fatal("try_rhosts_rsa_authentication: BN_new failed");
+ packet_get_bignum(challenge);
+ packet_check_eom();
debug("Received RSA challenge for host key from server.");
BN_clear_free(challenge);
/* Wait for response from the server. */
- type = packet_read(&plen);
+ type = packet_read();
if (type == SSH_SMSG_SUCCESS) {
debug("Rhosts or /etc/hosts.equiv with RSA host authentication accepted by server.");
return 1;
char inst[INST_SZ];
char *realm;
CREDENTIALS cred;
- int r, type, plen;
+ int r, type;
socklen_t slen;
Key_schedule schedule;
u_long checksum, cksum;
/* Don't do anything if we don't have any tickets. */
if (stat(tkt_string(), &st) < 0)
return 0;
-
+
strlcpy(inst, (char *)krb_get_phost(get_canonical_hostname(1)),
INST_SZ);
-
+
realm = (char *)krb_realmofhost(get_canonical_hostname(1));
if (!realm) {
debug("Kerberos v4: no realm for %s", get_canonical_hostname(1));
}
/* This can really be anything. */
checksum = (u_long)getpid();
-
+
r = krb_mk_req(&auth, KRB4_SERVICE_NAME, inst, realm, checksum);
if (r != KSUCCESS) {
debug("Kerberos v4 krb_mk_req failed: %s", krb_err_txt[r]);
return 0;
}
des_key_sched((des_cblock *) cred.session, schedule);
-
+
/* Send authentication info to server. */
packet_start(SSH_CMSG_AUTH_KERBEROS);
packet_put_string((char *) auth.dat, auth.length);
packet_send();
packet_write_wait();
-
+
/* Zero the buffer. */
(void) memset(auth.dat, 0, MAX_KTXT_LEN);
-
+
slen = sizeof(local);
memset(&local, 0, sizeof(local));
if (getsockname(packet_get_connection_in(),
(struct sockaddr *)&local, &slen) < 0)
debug("getsockname failed: %s", strerror(errno));
-
+
slen = sizeof(foreign);
memset(&foreign, 0, sizeof(foreign));
if (getpeername(packet_get_connection_in(),
fatal_cleanup();
}
/* Get server reply. */
- type = packet_read(&plen);
+ type = packet_read();
switch (type) {
case SSH_SMSG_FAILURE:
/* Should really be SSH_SMSG_AUTH_KERBEROS_FAILURE */
debug("Kerberos v4 authentication failed.");
return 0;
break;
-
+
case SSH_SMSG_AUTH_KERBEROS_RESPONSE:
/* SSH_SMSG_AUTH_KERBEROS_SUCCESS */
debug("Kerberos v4 authentication accepted.");
-
+
/* Get server's response. */
reply = packet_get_string((u_int *) &auth.length);
memcpy(auth.dat, reply, auth.length);
xfree(reply);
-
- packet_integrity_check(plen, 4 + auth.length, type);
-
+
+ packet_check_eom();
+
/*
* If his response isn't properly encrypted with the session
* key, and the decrypted checksum fails to match, he's
memcpy((char *)&cksum, (char *)msg_data.app_data,
sizeof(cksum));
cksum = ntohl(cksum);
-
+
/* If it matches, we're golden. */
if (cksum == checksum + 1) {
debug("Kerberos v4 challenge successful.");
} else
packet_disconnect("Kerberos v4 challenge failed!");
break;
-
+
default:
packet_disconnect("Protocol error on Kerberos v4 response: %d", type);
}
krb5_ccache ccache = NULL;
const char *remotehost;
krb5_data ap;
- int type, payload_len;
+ int type;
krb5_ap_rep_enc_part *reply = NULL;
int ret;
-
+
memset(&ap, 0, sizeof(ap));
-
+
problem = krb5_init_context(context);
if (problem) {
debug("Kerberos v5: krb5_init_context failed");
goto out;
}
-#ifndef HEIMDAL
+#ifndef HEIMDAL
problem = krb5_auth_con_setflags(*context, *auth_context,
KRB5_AUTH_CONTEXT_RET_TIME);
if (problem) {
- debug("Kerberos v5: krb5_auth_con_setflags failed");
+ debug("Keberos v5: krb5_auth_con_setflags failed");
ret = 0;
goto out;
- }
+ }
#endif
tkfile = krb5_cc_default_name(*context);
if (strncmp(tkfile, "FILE:", 5) == 0)
tkfile += 5;
-
+
if (stat(tkfile, &buf) == 0 && getuid() != buf.st_uid) {
debug("Kerberos v5: could not get default ccache (permission denied).");
ret = 0;
goto out;
}
-
+
problem = krb5_cc_default(*context, &ccache);
if (problem) {
debug("Kerberos v5: krb5_cc_default failed: %s",
ret = 0;
goto out;
}
-
+
remotehost = get_canonical_hostname(1);
-
+
problem = krb5_mk_req(*context, auth_context, AP_OPTS_MUTUAL_REQUIRED,
"host", remotehost, NULL, ccache, &ap);
if (problem) {
ret = 0;
goto out;
}
-
+
packet_start(SSH_CMSG_AUTH_KERBEROS);
packet_put_string((char *) ap.data, ap.length);
packet_send();
packet_write_wait();
-
+
xfree(ap.data);
ap.length = 0;
-
- type = packet_read(&payload_len);
+
+ type = packet_read();
switch (type) {
- case SSH_SMSG_FAILURE:
- /* Should really be SSH_SMSG_AUTH_KERBEROS_FAILURE */
- debug("Kerberos v5 authentication failed.");
- ret = 0;
- break;
-
+ case SSH_SMSG_FAILURE:
+ /* Should really be SSH_SMSG_AUTH_KERBEROS_FAILURE */
+ debug("Kerberos v5 authentication failed.");
+ ret = 0;
+ break;
+
case SSH_SMSG_AUTH_KERBEROS_RESPONSE:
- /* SSH_SMSG_AUTH_KERBEROS_SUCCESS */
- debug("Kerberos v5 authentication accepted.");
-
- /* Get server's response. */
- ap.data = packet_get_string((unsigned int *) &ap.length);
-
- packet_integrity_check(payload_len, 4 + ap.length, type);
- /* XXX je to dobre? */
-
- problem = krb5_rd_rep(*context, *auth_context, &ap, &reply);
- if (problem) {
+ /* SSH_SMSG_AUTH_KERBEROS_SUCCESS */
+ debug("Kerberos v5 authentication accepted.");
+
+ /* Get server's response. */
+ ap.data = packet_get_string((unsigned int *) &ap.length);
+ packet_check_eom();
+ /* XXX je to dobre? */
+
+ problem = krb5_rd_rep(*context, *auth_context, &ap, &reply);
+ if (problem) {
ret = 0;
}
ret = 1;
break;
-
+
default:
packet_disconnect("Protocol error on Kerberos v5 response: %d",
type);
ret = 0;
break;
-
+
}
-
+
out:
if (ccache != NULL)
krb5_cc_close(*context, ccache);
#ifdef HEIMDAL
krb5_data_free(&ap);
#else
- xfree(ap.data);
-#endif
-
+ krb5_free_data_contents(*context, &ap);
+#endif
+
return (ret);
}
static void
send_krb5_tgt(krb5_context context, krb5_auth_context auth_context)
{
- int fd, type, payload_len;
+ int fd, type;
krb5_error_code problem;
krb5_data outbuf;
krb5_ccache ccache = NULL;
int forwardable;
#endif
const char *remotehost;
-
+
memset(&creds, 0, sizeof(creds));
memset(&outbuf, 0, sizeof(outbuf));
-
+
fd = packet_get_connection_in();
-
-#ifdef HEIMDAL
+
+#ifdef HEIMDAL
problem = krb5_auth_con_setaddrs_from_fd(context, auth_context, &fd);
- if (problem)
- goto out;
#else
- problem = krb5_auth_con_genaddrs(context, auth_context, fd,
+ problem = krb5_auth_con_genaddrs(context, auth_context, fd,
KRB5_AUTH_CONTEXT_GENERATE_REMOTE_FULL_ADDR |
KRB5_AUTH_CONTEXT_GENERATE_LOCAL_FULL_ADDR);
- if (problem) {
- debug("krb5_auth_con_genaddrs: %.100s", error_message(problem));
- goto out;
- }
#endif
-
+ if (problem)
+ goto out;
+
problem = krb5_cc_default(context, &ccache);
if (problem)
goto out;
-
+
problem = krb5_cc_get_principal(context, ccache, &creds.client);
if (problem)
goto out;
+
+ remotehost = get_canonical_hostname(1);
#ifdef HEIMDAL
problem = krb5_build_principal(context, &creds.server,
#else
problem = krb5_build_principal(context, &creds.server,
creds.client->realm.length, creds.client->realm.data,
- "krbtgt", creds.client->realm.data, NULL);
+ "host", remotehost, NULL);
#endif
-
if (problem)
goto out;
-
+
creds.times.endtime = 0;
-
-#ifdef HEIMDAL
+
+#ifdef HEIMDAL
flags.i = 0;
flags.b.forwarded = 1;
flags.b.forwardable = krb5_config_get_bool(context, NULL,
"libdefaults", "forwardable", NULL);
-
- remotehost = get_canonical_hostname(1);
-
problem = krb5_get_forwarded_creds(context, auth_context,
ccache, flags.i, remotehost, &creds, &outbuf);
- if (problem)
- goto out;
#else
forwardable = 1;
+ problem = krb5_fwd_tgt_creds(context, auth_context, remotehost,
+ creds.client, creds.server, ccache, forwardable, &outbuf);
+#endif
- remotehost = get_canonical_hostname(1);
+ if (problem)
+ goto out;
- problem = krb5_fwd_tgt_creds (context, auth_context,
- remotehost, creds.client, creds.server, ccache, forwardable,
- &outbuf);
- if (problem)
- goto out;
-#endif
-
packet_start(SSH_CMSG_HAVE_KERBEROS_TGT);
packet_put_string((char *)outbuf.data, outbuf.length);
packet_send();
packet_write_wait();
-
- type = packet_read(&payload_len);
-
+
+ type = packet_read();
+
if (type == SSH_SMSG_SUCCESS) {
char *pname;
-
+
krb5_unparse_name(context, creds.client, &pname);
debug("Kerberos v5 TGT forwarded (%s).", pname);
xfree(pname);
} else
debug("Kerberos v5 TGT forwarding failed.");
-
+
return;
-
+
out:
if (problem)
debug("Kerberos v5 TGT forwarding failed: %s",
CREDENTIALS *creds;
struct stat st;
char buffer[4096], pname[ANAME_SZ], pinst[INST_SZ], prealm[REALM_SZ];
- int problem, type, len;
-
+ int problem, type;
+
/* Don't do anything if we don't have any tickets. */
if (stat(tkt_string(), &st) < 0)
return;
-
+
creds = xmalloc(sizeof(*creds));
-
+
problem = krb_get_tf_fullname(TKT_FILE, pname, pinst, prealm);
if (problem)
goto out;
-
+
problem = krb_get_cred("krbtgt", prealm, prealm, creds);
if (problem)
goto out;
-
+
if (time(0) > krb_life_to_time(creds->issue_date, creds->lifetime)) {
problem = RD_AP_EXP;
goto out;
}
creds_to_radix(creds, (u_char *)buffer, sizeof(buffer));
-
+
packet_start(SSH_CMSG_HAVE_KERBEROS_TGT);
packet_put_cstring(buffer);
packet_send();
packet_write_wait();
-
- type = packet_read(&len);
-
+
+ type = packet_read();
+
if (type == SSH_SMSG_SUCCESS)
debug("Kerberos v4 TGT forwarded (%s%s%s@%s).",
creds->pname, creds->pinst[0] ? "." : "",
creds->pinst, creds->realm);
else
debug("Kerberos v4 TGT rejected.");
-
+
xfree(creds);
return;
-
+
out:
debug("Kerberos v4 TGT passing failed: %s", krb_err_txt[problem]);
xfree(creds);
int i, type, len;
char buf[2048], *p, *server_cell;
char buffer[8192];
-
+
/* Move over ktc_GetToken, here's something leaner. */
for (i = 0; i < 100; i++) { /* just in case */
parms.in = (char *) &i;
if (k_pioctl(0, VIOCGETTOK, &parms, 0) != 0)
break;
p = buf;
-
+
/* Get secret token. */
memcpy(&creds.ticket_st.length, p, sizeof(u_int));
if (creds.ticket_st.length > MAX_KTXT_LEN)
p += sizeof(u_int);
memcpy(creds.ticket_st.dat, p, creds.ticket_st.length);
p += creds.ticket_st.length;
-
+
/* Get clear token. */
memcpy(&len, p, sizeof(len));
if (len != sizeof(struct ClearToken))
p += len;
p += sizeof(len); /* primary flag */
server_cell = p;
-
+
/* Flesh out our credentials. */
strlcpy(creds.service, "afs", sizeof(creds.service));
creds.instance[0] = '\0';
creds.kvno = ct.AuthHandle;
snprintf(creds.pname, sizeof(creds.pname), "AFS ID %d", ct.ViceId);
creds.pinst[0] = '\0';
-
+
/* Encode token, ship it off. */
if (creds_to_radix(&creds, (u_char *)buffer,
sizeof(buffer)) <= 0)
/* Roger, Roger. Clearance, Clarence. What's your vector,
Victor? */
- type = packet_read(&len);
-
+ type = packet_read();
+
if (type == SSH_SMSG_FAILURE)
debug("AFS token for cell %s rejected.", server_cell);
else if (type != SSH_SMSG_SUCCESS)
try_challenge_response_authentication(void)
{
int type, i;
- int payload_len;
u_int clen;
char prompt[1024];
char *challenge, *response;
packet_send();
packet_write_wait();
- type = packet_read(&payload_len);
+ type = packet_read();
if (type != SSH_SMSG_FAILURE &&
type != SSH_SMSG_AUTH_TIS_CHALLENGE) {
packet_disconnect("Protocol error: got %d in response "
return 0;
}
challenge = packet_get_string(&clen);
- packet_integrity_check(payload_len, (4 + clen), type);
+ packet_check_eom();
snprintf(prompt, sizeof prompt, "%s%s", challenge,
- strchr(challenge, '\n') ? "" : "\nResponse: ");
+ strchr(challenge, '\n') ? "" : "\nResponse: ");
xfree(challenge);
if (i != 0)
error("Permission denied, please try again.");
xfree(response);
packet_send();
packet_write_wait();
- type = packet_read(&payload_len);
+ type = packet_read();
if (type == SSH_SMSG_SUCCESS)
return 1;
if (type != SSH_SMSG_FAILURE)
static int
try_password_authentication(char *prompt)
{
- int type, i, payload_len;
+ int type, i;
char *password;
debug("Doing password authentication.");
packet_send();
packet_write_wait();
- type = packet_read(&payload_len);
+ type = packet_read();
if (type == SSH_SMSG_SUCCESS)
return 1;
if (type != SSH_SMSG_FAILURE)
int type;
char *gssapi_auth_type = NULL;
struct hostent *hostinfo;
- int len;
/*
/*
* Get reply from the daemon to see if our mech was acceptable
*/
- type = packet_read(&len);
+ type = packet_read();
switch (type) {
case SSH_SMSG_AUTH_GSSAPI_RESPONSE:
debug("Continue needed. Reading response...");
- type = packet_read(&len);
+ type = packet_read();
switch(type) {
* matches what we got earlier.
*/
debug("Reading hash of server and host keys...");
- type = packet_read(&len);
+ type = packet_read();
if (type == SSH_MSG_AUTH_GSSAPI_ABORT) {
debug("Server aborted GSSAPI authentication.");
{
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];
u_char cookie[8];
u_int supported_ciphers;
u_int server_flags, client_flags;
- int payload_len, clen, sum_len = 0;
u_int32_t rand = 0;
debug("Waiting for server public key.");
/* Wait for a public key packet from the server. */
- packet_read_expect(&payload_len, SSH_SMSG_PUBLIC_KEY);
+ packet_read_expect(SSH_SMSG_PUBLIC_KEY);
/* Get cookie from the packet. */
for (i = 0; i < 8; i++)
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);
- sum_len += clen;
- public_key->n = BN_new();
- packet_get_bignum(public_key->n, &clen);
- sum_len += clen;
-
- rbits = BN_num_bits(public_key->n);
+ server_key = key_new(KEY_RSA1);
+ bits = packet_get_int();
+ packet_get_bignum(server_key->rsa->e);
+ packet_get_bignum(server_key->rsa->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);
- sum_len += clen;
- host_key->n = BN_new();
- packet_get_bignum(host_key->n, &clen);
- sum_len += clen;
-
- rbits = BN_num_bits(host_key->n);
+ host_key = key_new(KEY_RSA1);
+ bits = packet_get_int();
+ packet_get_bignum(host_key->rsa->e);
+ packet_get_bignum(host_key->rsa->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);
buffer_init(&buf);
/* Server key */
- buffer_put_bignum(&buf, public_key->e);
- buffer_put_bignum(&buf, public_key->n);
+ buffer_put_bignum(&buf, server_key->rsa->e);
+ buffer_put_bignum(&buf, server_key->rsa->n);
/* Host key */
- buffer_put_bignum(&buf, host_key->e);
- buffer_put_bignum(&buf, host_key->n);
+ buffer_put_bignum(&buf, host_key->rsa->e);
+ buffer_put_bignum(&buf, host_key->rsa->n);
/* Get the resulting data */
data = (unsigned char *) buffer_ptr(&buf);
supported_ciphers = packet_get_int();
supported_authentications = packet_get_int();
+ packet_check_eom();
debug("Received server public key (%d bits) and host key (%d bits).",
- BN_num_bits(public_key->n), BN_num_bits(host_key->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)
+ BN_num_bits(server_key->rsa->n), BN_num_bits(host_key->rsa->n));
+
+ 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();
* 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);
* 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 + "
- "SSH_KEY_BITS_RESERVED %d",
- BN_num_bits(host_key->n),
- BN_num_bits(public_key->n),
- SSH_KEY_BITS_RESERVED);
+ 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->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 + "
- "SSH_KEY_BITS_RESERVED %d",
- BN_num_bits(public_key->n),
- BN_num_bits(host_key->n),
- SSH_KEY_BITS_RESERVED);
+ 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(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))
/* Check that the selected cipher is supported. */
if (!(supported_ciphers & (1 << options.cipher)))
fatal("Selected cipher type %.100s not supported by server.",
- cipher_name(options.cipher));
+ cipher_name(options.cipher));
debug("Encryption type: %.100s", cipher_name(options.cipher));
* Expect a success message from the server. Note that this message
* will be received in encrypted form.
*/
- packet_read_expect(&payload_len, SSH_SMSG_SUCCESS);
+ packet_read_expect(SSH_SMSG_SUCCESS);
debug("Received encrypted confirmation.");
}
krb5_auth_context auth_context = NULL;
#endif
int i, type;
- int payload_len;
-
+
if (supported_authentications == 0)
fatal("ssh_userauth1: server supports no auth methods");
* needed (the user has no password). Otherwise the server responds
* with failure.
*/
- type = packet_read(&payload_len);
+ type = packet_read();
/* check whether the connection was accepted without authentication. */
if (type == SSH_SMSG_SUCCESS)
* the Kerberos code is broken. - vwelch 1/27/99
*/
- type = packet_read(&payload_len);
+ type = packet_read();
if (type == SSH_SMSG_SUCCESS)
return; /* Successful connection. */
if (type != SSH_SMSG_FAILURE)
#ifdef KRB5
if ((supported_authentications & (1 << SSH_AUTH_KERBEROS)) &&
- options.kerberos_authentication) {
+ options.kerberos_authentication) {
debug("Trying Kerberos v5 authentication.");
-
+
if (try_krb5_authentication(&context, &auth_context)) {
- type = packet_read(&payload_len);
+ type = packet_read();
if (type == SSH_SMSG_SUCCESS)
goto success;
if (type != SSH_SMSG_FAILURE)
}
}
#endif /* KRB5 */
-
+
#ifdef KRB4
if ((supported_authentications & (1 << SSH_AUTH_KERBEROS)) &&
options.kerberos_authentication) {
debug("Trying Kerberos v4 authentication.");
-
+
if (try_krb4_authentication()) {
- type = packet_read(&payload_len);
+ type = packet_read();
if (type == SSH_SMSG_SUCCESS)
goto success;
if (type != SSH_SMSG_FAILURE)
}
}
#endif /* KRB4 */
-
+
/*
* Use rhosts authentication if running in privileged socket and we
* do not wish to remain anonymous.
packet_write_wait();
/* The server should respond with success or failure. */
- type = packet_read(&payload_len);
+ type = packet_read();
if (type == SSH_SMSG_SUCCESS)
goto success;
if (type != SSH_SMSG_FAILURE)
if (context)
krb5_free_context(context);
#endif
-
+
#ifdef AFS
/* Try Kerberos v4 TGT passing if the server supports it. */
if ((supported_authentications & (1 << SSH_PASS_KERBEROS_TGT)) &&
andersk / gssapi-openssh.git / blobdiff