Newer
Older
*/
if ((krb5rc = kssl_check_authent(kssl_ctx, &authenticator,
&authtime, &kssl_err)) != 0)
{
#ifdef KSSL_DEBUG
printf("kssl_check_authent rtn %d [%d]\n",
krb5rc, kssl_err.reason);
if (kssl_err.text)
printf("kssl_err text= %s\n", kssl_err.text);
#endif /* KSSL_DEBUG */
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
kssl_err.reason);
goto err;
}
if ((krb5rc = kssl_validate_times(authtime, &ttimes)) != 0)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE, krb5rc);
goto err;
}
Richard Levitte
committed
#ifdef KSSL_DEBUG
kssl_ctx_show(kssl_ctx);
#endif /* KSSL_DEBUG */
enc = kssl_map_enc(kssl_ctx->enctype);
if (enc == NULL)
goto err;
memset(iv, 0, sizeof iv); /* per RFC 1510 */
if (!EVP_DecryptInit_ex(&ciph_ctx,enc,NULL,kssl_ctx->key,iv))
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_DECRYPTION_FAILED);
goto err;
}
if (!EVP_DecryptUpdate(&ciph_ctx, pms,&outl,
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_DECRYPTION_FAILED);
goto err;
}
if (outl > SSL_MAX_MASTER_KEY_LENGTH)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_DATA_LENGTH_TOO_LONG);
goto err;
}
if (!EVP_DecryptFinal_ex(&ciph_ctx,&(pms[outl]),&padl))
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_DECRYPTION_FAILED);
goto err;
}
outl += padl;
if (outl > SSL_MAX_MASTER_KEY_LENGTH)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_DATA_LENGTH_TOO_LONG);
goto err;
}
EVP_CIPHER_CTX_cleanup(&ciph_ctx);
Richard Levitte
committed
s->session->master_key_length=
s->method->ssl3_enc->generate_master_secret(s,
s->session->master_key, pms, outl);
if (kssl_ctx->client_princ)
{
int len = strlen(kssl_ctx->client_princ);
if ( len < SSL_MAX_KRB5_PRINCIPAL_LENGTH )
{
s->session->krb5_client_princ_len = len;
memcpy(s->session->krb5_client_princ,kssl_ctx->client_princ,len);
}
}
/* Was doing kssl_ctx_free() here,
** but it caused problems for apache.
** kssl_ctx = kssl_ctx_free(kssl_ctx);
** if (s->kssl_ctx) s->kssl_ctx = NULL;
Richard Levitte
committed
*/
}
else
#endif /* OPENSSL_NO_KRB5 */
if ((l & SSL_kECDH) || (l & SSL_kEECDH))
const EC_KEY *tkey;
const EC_GROUP *group;
const BIGNUM *priv_key;
/* initialize structures for server's ECDH key pair */
if ((srvr_ecdh = EC_KEY_new()) == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_MALLOC_FAILURE);
goto err;
}
/* Let's get server private key and group information */
if (l & SSL_kECDH)
{
/* use the certificate */
}
else
{
/* use the ephermeral values we saved when
* generating the ServerKeyExchange msg.
*/
tkey = s->s3->tmp.ecdh;
}
group = EC_KEY_get0_group(tkey);
priv_key = EC_KEY_get0_private_key(tkey);
if (!EC_KEY_set_group(srvr_ecdh, group) ||
!EC_KEY_set_private_key(srvr_ecdh, priv_key))
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_EC_LIB);
goto err;
if ((clnt_ecpoint = EC_POINT_new(group)) == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_MALLOC_FAILURE);
goto err;
}
if (n == 0L)
{
/* Client Publickey was in Client Certificate */
if (l & SSL_kEECDH)
{
al=SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_MISSING_TMP_ECDH_KEY);
goto f_err;
}
if (((clnt_pub_pkey=X509_get_pubkey(s->session->peer))
== NULL) ||
(clnt_pub_pkey->type != EVP_PKEY_EC))
{
/* XXX: For now, we do not support client
* authentication using ECDH certificates
* so this branch (n == 0L) of the code is
* never executed. When that support is
* added, we ought to ensure the key
* received in the certificate is
* authorized for key agreement.
* ECDH_compute_key implicitly checks that
* the two ECDH shares are for the same
* group.
*/
al=SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_UNABLE_TO_DECODE_ECDH_CERTS);
goto f_err;
}
if (EC_POINT_copy(clnt_ecpoint,
EC_KEY_get0_public_key(clnt_pub_pkey->pkey.ec)) == 0)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_EC_LIB);
goto err;
}
ret = 2; /* Skip certificate verify processing */
}
else
{
/* Get client's public key from encoded point
* in the ClientKeyExchange message.
*/
if ((bn_ctx = BN_CTX_new()) == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_MALLOC_FAILURE);
goto err;
}
/* Get encoded point length */
i = *p;
p += 1;
clnt_ecpoint, p, i, bn_ctx) == 0)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_EC_LIB);
goto err;
}
/* p is pointing to somewhere in the buffer
* currently, so set it to the start
*/
p=(unsigned char *)s->init_buf->data;
}
/* Compute the shared pre-master secret */
if (field_size <= 0)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_ECDH_LIB);
goto err;
}
i = ECDH_compute_key(p, (field_size+7)/8, clnt_ecpoint, srvr_ecdh, NULL);
if (i <= 0)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_ECDH_LIB);
goto err;
}
EVP_PKEY_free(clnt_pub_pkey);
EC_POINT_free(clnt_ecpoint);
if (srvr_ecdh != NULL)
EC_KEY_free(srvr_ecdh);
BN_CTX_free(bn_ctx);
/* Compute the master secret */
s->session->master_key_length = s->method->ssl3_enc-> \
generate_master_secret(s, s->session->master_key, p, i);
OPENSSL_cleanse(p, i);
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
#endif
#ifndef OPENSSL_NO_PSK
if (l & SSL_kPSK)
{
unsigned char *t = NULL;
unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
unsigned int pre_ms_len = 0, psk_len = 0;
int psk_err = 1;
char tmp_id[PSK_MAX_IDENTITY_LEN+1];
al=SSL_AD_HANDSHAKE_FAILURE;
n2s(p,i);
if (n != i+2)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_LENGTH_MISMATCH);
goto psk_err;
}
if (i > PSK_MAX_IDENTITY_LEN)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_DATA_LENGTH_TOO_LONG);
goto psk_err;
}
if (s->psk_server_callback == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_PSK_NO_SERVER_CB);
goto psk_err;
}
/* Create guaranteed NULL-terminated identity
* string for the callback */
memcpy(tmp_id, p, i);
memset(tmp_id+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
psk_len = s->psk_server_callback(s, tmp_id,
psk_or_pre_ms, sizeof(psk_or_pre_ms));
OPENSSL_cleanse(tmp_id, PSK_MAX_IDENTITY_LEN+1);
if (psk_len > PSK_MAX_PSK_LEN)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
goto psk_err;
}
else if (psk_len == 0)
{
/* PSK related to the given identity not found */
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_PSK_IDENTITY_NOT_FOUND);
al=SSL_AD_UNKNOWN_PSK_IDENTITY;
goto psk_err;
}
/* create PSK pre_master_secret */
pre_ms_len=2+psk_len+2+psk_len;
t = psk_or_pre_ms;
memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
s2n(psk_len, t);
memset(t, 0, psk_len);
t+=psk_len;
s2n(psk_len, t);
if (s->session->psk_identity != NULL)
OPENSSL_free(s->session->psk_identity);
s->session->psk_identity = BUF_strdup((char *)p);
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
if (s->session->psk_identity == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_MALLOC_FAILURE);
goto psk_err;
}
if (s->session->psk_identity_hint != NULL)
OPENSSL_free(s->session->psk_identity_hint);
s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
if (s->ctx->psk_identity_hint != NULL &&
s->session->psk_identity_hint == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_MALLOC_FAILURE);
goto psk_err;
}
s->session->master_key_length=
s->method->ssl3_enc->generate_master_secret(s,
s->session->master_key, psk_or_pre_ms, pre_ms_len);
psk_err = 0;
psk_err:
OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
if (psk_err != 0)
goto f_err;
}
else
al=SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_UNKNOWN_CIPHER_TYPE);
goto f_err;
}
return(1);
f_err:
ssl3_send_alert(s,SSL3_AL_FATAL,al);
#if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_ECDH)
EVP_PKEY_free(clnt_pub_pkey);
EC_POINT_free(clnt_ecpoint);
if (srvr_ecdh != NULL)
EC_KEY_free(srvr_ecdh);
BN_CTX_free(bn_ctx);
return(-1);
}
{
EVP_PKEY *pkey=NULL;
unsigned char *p;
int al,ok,ret=0;
long n;
int type=0,i,j;
X509 *peer;
SSL3_ST_SR_CERT_VRFY_A,
SSL3_ST_SR_CERT_VRFY_B,
-1,
514, /* 514? */
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
&ok);
if (!ok) return((int)n);
if (s->session->peer != NULL)
{
peer=s->session->peer;
pkey=X509_get_pubkey(peer);
type=X509_certificate_type(peer,pkey);
}
else
{
peer=NULL;
pkey=NULL;
}
if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_VERIFY)
{
s->s3->tmp.reuse_message=1;
if ((peer != NULL) && (type | EVP_PKT_SIGN))
{
al=SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_MISSING_VERIFY_MESSAGE);
goto f_err;
}
ret=1;
goto end;
}
if (peer == NULL)
{
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_NO_CLIENT_CERT_RECEIVED);
al=SSL_AD_UNEXPECTED_MESSAGE;
goto f_err;
}
if (!(type & EVP_PKT_SIGN))
{
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE);
al=SSL_AD_ILLEGAL_PARAMETER;
goto f_err;
}
if (s->s3->change_cipher_spec)
{
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_CCS_RECEIVED_EARLY);
al=SSL_AD_UNEXPECTED_MESSAGE;
goto f_err;
}
/* we now have a signature that we need to verify */
p=(unsigned char *)s->init_msg;
n2s(p,i);
n-=2;
if (i > n)
{
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_LENGTH_MISMATCH);
al=SSL_AD_DECODE_ERROR;
goto f_err;
}
j=EVP_PKEY_size(pkey);
if ((i > j) || (n > j) || (n <= 0))
{
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_WRONG_SIGNATURE_SIZE);
al=SSL_AD_DECODE_ERROR;
goto f_err;
}
#ifndef OPENSSL_NO_RSA
if (pkey->type == EVP_PKEY_RSA)
{
i=RSA_verify(NID_md5_sha1, s->s3->tmp.cert_verify_md,
Dr. Stephen Henson
committed
MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, p, i,
pkey->pkey.rsa);
al=SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_RSA_DECRYPT);
goto f_err;
}
Dr. Stephen Henson
committed
if (i == 0)
al=SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_RSA_SIGNATURE);
goto f_err;
}
}
else
#endif
#ifndef OPENSSL_NO_DSA
if (pkey->type == EVP_PKEY_DSA)
{
j=DSA_verify(pkey->save_type,
&(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]),
SHA_DIGEST_LENGTH,p,i,pkey->pkey.dsa);
if (j <= 0)
{
/* bad signature */
al=SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_DSA_SIGNATURE);
goto f_err;
}
}
else
if (pkey->type == EVP_PKEY_EC)
{
j=ECDSA_verify(pkey->save_type,
&(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]),
if (j <= 0)
{
/* bad signature */
al=SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,
SSL_R_BAD_ECDSA_SIGNATURE);
goto f_err;
}
}
else
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,ERR_R_INTERNAL_ERROR);
al=SSL_AD_UNSUPPORTED_CERTIFICATE;
goto f_err;
}
ret=1;
if (0)
{
f_err:
ssl3_send_alert(s,SSL3_AL_FATAL,al);
}
end:
EVP_PKEY_free(pkey);
return(ret);
}
{
int i,ok,al,ret= -1;
X509 *x=NULL;
unsigned long l,nc,llen,n;
const unsigned char *p,*q;
unsigned char *d;
SSL3_ST_SR_CERT_A,
SSL3_ST_SR_CERT_B,
-1,
s->max_cert_list,
&ok);
if (!ok) return((int)n);
if (s->s3->tmp.message_type == SSL3_MT_CLIENT_KEY_EXCHANGE)
{
if ( (s->verify_mode & SSL_VERIFY_PEER) &&
(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT))
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
al=SSL_AD_HANDSHAKE_FAILURE;
goto f_err;
}
/* If tls asked for a client cert, the client must return a 0 list */
if ((s->version > SSL3_VERSION) && s->s3->tmp.cert_request)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST);
al=SSL_AD_UNEXPECTED_MESSAGE;
goto f_err;
}
s->s3->tmp.reuse_message=1;
return(1);
}
if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
{
al=SSL_AD_UNEXPECTED_MESSAGE;
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_WRONG_MESSAGE_TYPE);
goto f_err;
}
p=d=(unsigned char *)s->init_msg;
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE);
goto err;
}
n2l3(p,llen);
if (llen+3 != n)
{
al=SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
goto f_err;
}
for (nc=0; nc<llen; )
{
n2l3(p,l);
if ((l+nc+3) > llen)
{
al=SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
goto f_err;
}
q=p;
x=d2i_X509(NULL,&p,l);
if (x == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_ASN1_LIB);
goto err;
}
if (p != (q+l))
{
al=SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
goto f_err;
}
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE);
goto err;
}
x=NULL;
nc+=l+3;
}
/* TLS does not mind 0 certs returned */
if (s->version == SSL3_VERSION)
{
al=SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_NO_CERTIFICATES_RETURNED);
goto f_err;
}
/* Fail for TLS only if we required a certificate */
else if ((s->verify_mode & SSL_VERIFY_PEER) &&
(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT))
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
al=SSL_AD_HANDSHAKE_FAILURE;
goto f_err;
}
i=ssl_verify_cert_chain(s,sk);
if (!i)
{
al=ssl_verify_alarm_type(s->verify_result);
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_NO_CERTIFICATE_RETURNED);
goto f_err;
}
if (s->session->peer != NULL) /* This should not be needed */
X509_free(s->session->peer);
s->session->verify_result = s->verify_result;
/* With the current implementation, sess_cert will always be NULL
* when we arrive here. */
if (s->session->sess_cert == NULL)
{
s->session->sess_cert = ssl_sess_cert_new();
if (s->session->sess_cert == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (s->session->sess_cert->cert_chain != NULL)
sk_X509_pop_free(s->session->sess_cert->cert_chain, X509_free);
s->session->sess_cert->cert_chain=sk;
/* Inconsistency alert: cert_chain does *not* include the
* peer's own certificate, while we do include it in s3_clnt.c */
ret=1;
if (0)
{
f_err:
ssl3_send_alert(s,SSL3_AL_FATAL,al);
}
err:
if (x != NULL) X509_free(x);
if (sk != NULL) sk_X509_pop_free(sk,X509_free);
return(ret);
}
{
unsigned long l;
X509 *x;
if (s->state == SSL3_ST_SW_CERT_A)
{
x=ssl_get_server_send_cert(s);
Richard Levitte
committed
if (x == NULL &&
/* VRS: allow null cert if auth == KRB5 */
(s->s3->tmp.new_cipher->algorithms
& (SSL_MKEY_MASK|SSL_AUTH_MASK))
!= (SSL_aKRB5|SSL_kKRB5))
SSLerr(SSL_F_SSL3_SEND_SERVER_CERTIFICATE,ERR_R_INTERNAL_ERROR);
return(0);
}
l=ssl3_output_cert_chain(s,x);
s->state=SSL3_ST_SW_CERT_B;
s->init_num=(int)l;
s->init_off=0;
}
/* SSL3_ST_SW_CERT_B */
return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
}