-/* ssl/s3_srvr.c */
+/* ssl/s3_srvr.c -*- mode:C; c-file-style: "eay" -*- */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* [including the GNU Public Licence.]
*/
/* ====================================================================
- * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
int ssl3_accept(SSL *s)
{
BUF_MEM *buf;
- unsigned long l,Time=(unsigned long)time(NULL);
+ unsigned long alg_k,Time=(unsigned long)time(NULL);
void (*cb)(const SSL *ssl,int type,int val)=NULL;
long num1;
int ret= -1;
case SSL3_ST_SW_CERT_A:
case SSL3_ST_SW_CERT_B:
- /* Check if it is anon DH or anon ECDH */
- /* or normal PSK */
- if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)
- && !(s->s3->tmp.new_cipher->algorithms & SSL_kPSK))
+ /* Check if it is anon DH or anon ECDH, */
+ /* normal PSK or KRB5 */
+ if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
+ && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
+ && !(s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
{
ret=ssl3_send_server_certificate(s);
if (ret <= 0) goto end;
case SSL3_ST_SW_KEY_EXCH_A:
case SSL3_ST_SW_KEY_EXCH_B:
- l=s->s3->tmp.new_cipher->algorithms;
+ alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
/* clear this, it may get reset by
* send_server_key_exchange */
if ((s->options & SSL_OP_EPHEMERAL_RSA)
#ifndef OPENSSL_NO_KRB5
- && !(l & SSL_KRB5)
+ && !(alg_k & SSL_kKRB5)
#endif /* OPENSSL_NO_KRB5 */
)
/* option SSL_OP_EPHEMERAL_RSA sends temporary RSA key
/* PSK: send ServerKeyExchange if PSK identity
* hint if provided */
#ifndef OPENSSL_NO_PSK
- || ((l & SSL_kPSK) && s->ctx->psk_identity_hint)
+ || ((alg_k & SSL_kPSK) && s->ctx->psk_identity_hint)
#endif
- || (l & SSL_kEECDH)
- || ((l & SSL_kRSA)
+ || (alg_k & (SSL_kDHr|SSL_kDHd|SSL_kEDH))
+ || (alg_k & SSL_kEECDH)
+ || ((alg_k & SSL_kRSA)
&& (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL
|| (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)
&& EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)
/* never request cert in anonymous ciphersuites
* (see section "Certificate request" in SSL 3 drafts
* and in RFC 2246): */
- ((s->s3->tmp.new_cipher->algorithms & SSL_aNULL) &&
+ ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
/* ... except when the application insists on verification
* (against the specs, but s3_clnt.c accepts this for SSL 3) */
!(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) ||
- /* never request cert in Kerberos ciphersuites */
- (s->s3->tmp.new_cipher->algorithms & SSL_aKRB5)
+ /* never request cert in Kerberos ciphersuites */
+ (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)
/* With normal PSK Certificates and
* Certificate Requests are omitted */
- || (s->s3->tmp.new_cipher->algorithms & SSL_kPSK))
+ || (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
{
/* no cert request */
skip=1;
*/
if (s->state == SSL3_ST_SR_CLNT_HELLO_A)
{
- s->first_packet=1;
s->state=SSL3_ST_SR_CLNT_HELLO_B;
}
+ s->first_packet=1;
n=s->method->ssl_get_message(s,
SSL3_ST_SR_CLNT_HELLO_B,
SSL3_ST_SR_CLNT_HELLO_C,
&ok);
if (!ok) return((int)n);
+ s->first_packet=0;
d=p=(unsigned char *)s->init_msg;
/* use version from inside client hello, not from record header
}
}
if (ssl_check_clienthello_tlsext(s) <= 0) {
- SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_CLIENTHELLO_TLSEXT);
+ SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
goto err;
}
#endif
for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
{
c=sk_SSL_CIPHER_value(sk,i);
- if (c->algorithms & SSL_eNULL)
+ if (c->algorithm_enc & SSL_eNULL)
nc=c;
if (SSL_C_IS_EXPORT(c))
ec=c;
EVP_MD_CTX_init(&md_ctx);
if (s->state == SSL3_ST_SW_KEY_EXCH_A)
{
- type=s->s3->tmp.new_cipher->algorithms & SSL_MKEY_MASK;
+ type=s->s3->tmp.new_cipher->algorithm_mkey;
cert=s->cert;
buf=s->init_buf;
n+=2+nr[i];
}
- if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)
- && !(s->s3->tmp.new_cipher->algorithms & SSL_kPSK))
+ if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
+ && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
{
if ((pkey=ssl_get_sign_pkey(s,s->s3->tmp.new_cipher))
== NULL)
{
int i,al,ok;
long n;
- unsigned long l;
+ unsigned long alg_k;
unsigned char *p;
#ifndef OPENSSL_NO_RSA
RSA *rsa=NULL;
DH *dh_srvr;
#endif
#ifndef OPENSSL_NO_KRB5
- KSSL_ERR kssl_err;
+ KSSL_ERR kssl_err;
#endif /* OPENSSL_NO_KRB5 */
#ifndef OPENSSL_NO_ECDH
if (!ok) return((int)n);
p=(unsigned char *)s->init_msg;
- l=s->s3->tmp.new_cipher->algorithms;
+ alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
#ifndef OPENSSL_NO_RSA
- if (l & SSL_kRSA)
+ if (alg_k & SSL_kRSA)
{
/* FIX THIS UP EAY EAY EAY EAY */
if (s->s3->tmp.use_rsa_tmp)
else
#endif
#ifndef OPENSSL_NO_DH
- if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
+ if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
{
n2s(p,i);
if (n != i+2)
else
#endif
#ifndef OPENSSL_NO_KRB5
- if (l & SSL_kKRB5)
- {
- krb5_error_code krb5rc;
+ if (alg_k & SSL_kKRB5)
+ {
+ krb5_error_code krb5rc;
krb5_data enc_ticket;
krb5_data authenticator;
krb5_data enc_pms;
- KSSL_CTX *kssl_ctx = s->kssl_ctx;
+ KSSL_CTX *kssl_ctx = s->kssl_ctx;
EVP_CIPHER_CTX ciph_ctx;
EVP_CIPHER *enc = NULL;
unsigned char iv[EVP_MAX_IV_LENGTH];
unsigned char pms[SSL_MAX_MASTER_KEY_LENGTH
- + EVP_MAX_BLOCK_LENGTH];
- int padl, outl;
+ + EVP_MAX_BLOCK_LENGTH];
+ int padl, outl;
krb5_timestamp authtime = 0;
krb5_ticket_times ttimes;
EVP_CIPHER_CTX_init(&ciph_ctx);
- if (!kssl_ctx) kssl_ctx = kssl_ctx_new();
+ if (!kssl_ctx) kssl_ctx = kssl_ctx_new();
n2s(p,i);
enc_ticket.length = i;
goto err;
}
- if ((krb5rc = kssl_sget_tkt(kssl_ctx, &enc_ticket, &ttimes,
+ if ((krb5rc = kssl_sget_tkt(kssl_ctx, &enc_ticket, &ttimes,
&kssl_err)) != 0)
- {
+ {
#ifdef KSSL_DEBUG
- printf("kssl_sget_tkt rtn %d [%d]\n",
- krb5rc, kssl_err.reason);
- if (kssl_err.text)
- printf("kssl_err text= %s\n", kssl_err.text);
+ printf("kssl_sget_tkt 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;
- }
+ SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
+ kssl_err.reason);
+ goto err;
+ }
/* Note: no authenticator is not considered an error,
** but will return authtime == 0.
&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);
+ 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;
+ 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;
+ goto err;
}
#ifdef KSSL_DEBUG
- kssl_ctx_show(kssl_ctx);
+ kssl_ctx_show(kssl_ctx);
#endif /* KSSL_DEBUG */
enc = kssl_map_enc(kssl_ctx->enctype);
- if (enc == NULL)
- goto err;
+ if (enc == NULL)
+ goto err;
memset(iv, 0, sizeof iv); /* per RFC 1510 */
SSL_R_DATA_LENGTH_TOO_LONG);
goto err;
}
+ if (!((p[0] == (s->client_version>>8)) && (p[1] == (s->client_version & 0xff))))
+ {
+ /* The premaster secret must contain the same version number as the
+ * ClientHello to detect version rollback attacks (strangely, the
+ * protocol does not offer such protection for DH ciphersuites).
+ * However, buggy clients exist that send random bytes instead of
+ * the protocol version.
+ * If SSL_OP_TLS_ROLLBACK_BUG is set, tolerate such clients.
+ * (Perhaps we should have a separate BUG value for the Kerberos cipher)
+ */
+ if (!((s->options & SSL_OP_TLS_ROLLBACK_BUG) &&
+ (p[0] == (s->version>>8)) && (p[1] == (s->version & 0xff))))
+ {
+ SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
+ SSL_AD_DECODE_ERROR);
+ goto err;
+ }
+ }
+
EVP_CIPHER_CTX_cleanup(&ciph_ctx);
- s->session->master_key_length=
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key, pms, outl);
+ 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);
- }
- }
+ if (kssl_ctx->client_princ)
+ {
+ size_t 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,
+ /* 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;
- */
- }
+ ** kssl_ctx = kssl_ctx_free(kssl_ctx);
+ ** if (s->kssl_ctx) s->kssl_ctx = NULL;
+ */
+ }
else
#endif /* OPENSSL_NO_KRB5 */
#ifndef OPENSSL_NO_ECDH
- if ((l & SSL_kECDH) || (l & SSL_kEECDH))
+ if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
{
int ret = 1;
int field_size = 0;
const EC_GROUP *group;
const BIGNUM *priv_key;
- /* initialize structures for server's ECDH key pair */
+ /* initialize structures for server's ECDH key pair */
if ((srvr_ecdh = EC_KEY_new()) == NULL)
{
- SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
+ SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_MALLOC_FAILURE);
- goto err;
+ goto err;
}
/* Let's get server private key and group information */
- if (l & SSL_kECDH)
+ if (alg_k & (SSL_kECDHr|SSL_kECDHe))
{
- /* use the certificate */
- tkey = s->cert->key->privatekey->pkey.ec;
+ /* use the certificate */
+ tkey = s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec;
}
else
{
goto err;
}
- if (n == 0L)
- {
+ if (n == 0L)
+ {
/* Client Publickey was in Client Certificate */
- if (l & SSL_kEECDH)
+ if (alg_k & 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))
+ 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
* the two ECDH shares are for the same
* group.
*/
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
+ al=SSL_AD_HANDSHAKE_FAILURE;
+ SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
SSL_R_UNABLE_TO_DECODE_ECDH_CERTS);
- goto f_err;
- }
+ goto f_err;
+ }
if (EC_POINT_copy(clnt_ecpoint,
EC_KEY_get0_public_key(clnt_pub_pkey->pkey.ec)) == 0)
ERR_R_EC_LIB);
goto err;
}
- ret = 2; /* Skip certificate verify processing */
- }
- else
- {
+ ret = 2; /* Skip certificate verify processing */
+ }
+ else
+ {
/* Get client's public key from encoded point
* in the ClientKeyExchange message.
*/
goto err;
}
- /* Get encoded point length */
- i = *p;
+ /* Get encoded point length */
+ i = *p;
p += 1;
- if (EC_POINT_oct2point(group,
+ if (EC_POINT_oct2point(group,
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;
- }
+ /* 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 */
field_size = EC_GROUP_get_degree(group);
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,
+ if (i <= 0)
+ {
+ SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
ERR_R_ECDH_LIB);
- goto err;
- }
+ goto err;
+ }
EVP_PKEY_free(clnt_pub_pkey);
EC_POINT_free(clnt_ecpoint);
BN_CTX_free(bn_ctx);
/* Compute the master secret */
- s->session->master_key_length = s->method->ssl3_enc-> \
+ s->session->master_key_length = s->method->ssl3_enc-> \
generate_master_secret(s, s->session->master_key, p, i);
- OPENSSL_cleanse(p, i);
- return (ret);
+ OPENSSL_cleanse(p, i);
+ return (ret);
}
else
#endif
#ifndef OPENSSL_NO_PSK
- if (l & SSL_kPSK)
+ if (alg_k & SSL_kPSK)
{
unsigned char *t = NULL;
unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
psk_err = 0;
psk_err:
OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
- if (psk_err != 0)
- goto f_err;
+ if (psk_err != 0)
+ goto f_err;
}
else
#endif
if (s->state == SSL3_ST_SW_CERT_A)
{
x=ssl_get_server_send_cert(s);
- 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);
+ if (x == NULL)
+ {
+ /* VRS: allow null cert if auth == KRB5 */
+ if ((s->s3->tmp.new_cipher->algorithm_auth != SSL_aKRB5) ||
+ (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5))
+ {
+ SSLerr(SSL_F_SSL3_SEND_SERVER_CERTIFICATE,ERR_R_INTERNAL_ERROR);
+ return(0);
+ }
}
l=ssl3_output_cert_chain(s,x);
projects / openssl.git / blobdiff