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mbedtls_ssl_conf_arc4_support() depends on ARC4_C

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Manuel Pégourié-Gonnard 2015-05-14 12:28:21 +02:00
parent 22404866af
commit 66dc5555f0
6 changed files with 23 additions and 5 deletions
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6
include/mbedtls/ssl.h
View file

@ -911,10 +911,12 @@ typedef struct
unsigned int endpoint : 1; /*!< 0: client, 1: server */
unsigned int transport : 1; /*!< stream (TLS) or datagram (DTLS) */
unsigned int arc4_disabled : 1; /*!< blacklist RC4 ciphersuites? */
unsigned int authmode : 2; /*!< MBEDTLS_SSL_VERIFY_XXX */
/* needed even with renego disabled for LEGACY_BREAK_HANDSHAKE */
unsigned int allow_legacy_renegotiation : 2 ; /*!< MBEDTLS_LEGACY_XXX */
#if defined(MBEDTLS_ARC4_C)
unsigned int arc4_disabled : 1; /*!< blacklist RC4 ciphersuites? */
#endif
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
unsigned int mfl_code : 3; /*!< desired fragment length */
#endif
@ -1928,6 +1930,7 @@ void mbedtls_ssl_conf_encrypt_then_mac( mbedtls_ssl_config *conf, char etm );
void mbedtls_ssl_conf_extended_master_secret( mbedtls_ssl_config *conf, char ems );
#endif /* MBEDTLS_SSL_EXTENDED_MASTER_SECRET */
#if defined(MBEDTLS_ARC4_C)
/**
* \brief Disable or enable support for RC4
* (Default: MBEDTLS_SSL_ARC4_DISABLED)
@ -1942,6 +1945,7 @@ void mbedtls_ssl_conf_extended_master_secret( mbedtls_ssl_config *conf, char ems
* \param arc4 MBEDTLS_SSL_ARC4_ENABLED or MBEDTLS_SSL_ARC4_DISABLED
*/
void mbedtls_ssl_conf_arc4_support( mbedtls_ssl_config *conf, char arc4 );
#endif /* MBEDTLS_ARC4_C */
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
/**

12
library/ssl_cli.c
View file

@ -711,9 +711,11 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
continue;
#endif
#if defined(MBEDTLS_ARC4_C)
if( ssl->conf->arc4_disabled == MBEDTLS_SSL_ARC4_DISABLED &&
ciphersuite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
continue;
#endif
MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, add ciphersuite: %2d",
ciphersuites[i] ) );
@ -1405,15 +1407,17 @@ static int ssl_parse_server_hello( mbedtls_ssl_context *ssl )
MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, compress alg.: %d", buf[37 + n] ) );
suite_info = mbedtls_ssl_ciphersuite_from_id( ssl->session_negotiate->ciphersuite );
if( suite_info == NULL ||
( ssl->conf->arc4_disabled &&
suite_info->cipher == MBEDTLS_CIPHER_ARC4_128 ) )
if( suite_info == NULL
#if defined(MBEDTLS_ARC4_C)
|| ( ssl->conf->arc4_disabled &&
suite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
#endif
)
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server hello message" ) );
return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
}
i = 0;
while( 1 )
{

2
library/ssl_srv.c
View file

@ -969,12 +969,14 @@ static int ssl_ciphersuite_match( mbedtls_ssl_context *ssl, int suite_id,
return( 0 );
#endif
#if defined(MBEDTLS_ARC4_C)
if( ssl->conf->arc4_disabled == MBEDTLS_SSL_ARC4_DISABLED &&
suite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: rc4" ) );
return( 0 );
}
#endif
#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C)
if( mbedtls_ssl_ciphersuite_uses_ec( suite_info ) &&

4
library/ssl_tls.c
View file

@ -5627,10 +5627,12 @@ void mbedtls_ssl_conf_extended_master_secret( mbedtls_ssl_config *conf, char ems
}
#endif
#if defined(MBEDTLS_ARC4_C)
void mbedtls_ssl_conf_arc4_support( mbedtls_ssl_config *conf, char arc4 )
{
conf->arc4_disabled = arc4;
}
#endif
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
int mbedtls_ssl_conf_max_frag_len( mbedtls_ssl_config *conf, unsigned char mfl_code )
@ -6679,7 +6681,9 @@ int mbedtls_ssl_config_defaults( mbedtls_ssl_config *conf,
conf->ciphersuite_list[MBEDTLS_SSL_MINOR_VERSION_3] =
mbedtls_ssl_list_ciphersuites();
#if defined(MBEDTLS_ARC4_C)
conf->arc4_disabled = MBEDTLS_SSL_ARC4_DISABLED;
#endif
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
conf->encrypt_then_mac = MBEDTLS_SSL_ETM_ENABLED;

2
programs/ssl/ssl_client2.c
View file

@ -1116,8 +1116,10 @@ int main( int argc, char *argv[] )
if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite );
#if defined(MBEDTLS_ARC4_C)
if( opt.arc4 != DFL_ARC4 )
mbedtls_ssl_conf_arc4_support( &conf, opt.arc4 );
#endif
if( opt.allow_legacy != DFL_ALLOW_LEGACY )
mbedtls_ssl_conf_legacy_renegotiation( &conf, opt.allow_legacy );

2
programs/ssl/ssl_server2.c
View file

@ -1637,8 +1637,10 @@ int main( int argc, char *argv[] )
if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite );
#if defined(MBEDTLS_ARC4_C)
if( opt.arc4 != DFL_ARC4 )
mbedtls_ssl_conf_arc4_support( &conf, opt.arc4 );
#endif
if( opt.version_suites != NULL )
{