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- Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by default!

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This commit is contained in:
Paul Bakker 2012-02-06 16:45:10 +00:00
parent 13eb9f01cf
commit fab5c829e7
16 changed files with 556 additions and 41 deletions
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6
ChangeLog
View File

@ -1,5 +1,11 @@
PolarSSL ChangeLog PolarSSL ChangeLog
= Version Trunk
Features
* Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
default!
= Version 1.1.1 released on 2012-01-23 = Version 1.1.1 released on 2012-01-23
Bugfix Bugfix
* Check for failed malloc() in ssl_set_hostname() and x509_get_entries() * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()

5
include/polarssl/cipher.h
View File

@ -5,7 +5,7 @@
* *
* \author Adriaan de Jong <dejong@fox-it.com> * \author Adriaan de Jong <dejong@fox-it.com>
* *
* Copyright (C) 2006-2011, Brainspark B.V. * Copyright (C) 2006-2012, Brainspark B.V.
* *
* This file is part of PolarSSL (http://www.polarssl.org) * This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@ -48,6 +48,7 @@
typedef enum { typedef enum {
POLARSSL_CIPHER_ID_NONE = 0, POLARSSL_CIPHER_ID_NONE = 0,
POLARSSL_CIPHER_ID_NULL,
POLARSSL_CIPHER_ID_AES, POLARSSL_CIPHER_ID_AES,
POLARSSL_CIPHER_ID_DES, POLARSSL_CIPHER_ID_DES,
POLARSSL_CIPHER_ID_3DES, POLARSSL_CIPHER_ID_3DES,
@ -56,6 +57,7 @@ typedef enum {
typedef enum { typedef enum {
POLARSSL_CIPHER_NONE = 0, POLARSSL_CIPHER_NONE = 0,
POLARSSL_CIPHER_NULL,
POLARSSL_CIPHER_AES_128_CBC, POLARSSL_CIPHER_AES_128_CBC,
POLARSSL_CIPHER_AES_192_CBC, POLARSSL_CIPHER_AES_192_CBC,
POLARSSL_CIPHER_AES_256_CBC, POLARSSL_CIPHER_AES_256_CBC,
@ -81,6 +83,7 @@ typedef enum {
typedef enum { typedef enum {
POLARSSL_MODE_NONE = 0, POLARSSL_MODE_NONE = 0,
POLARSSL_MODE_NULL,
POLARSSL_MODE_CBC, POLARSSL_MODE_CBC,
POLARSSL_MODE_CFB128, POLARSSL_MODE_CFB128,
POLARSSL_MODE_OFB, POLARSSL_MODE_OFB,

6
include/polarssl/cipher_wrap.h
View File

@ -5,7 +5,7 @@
* *
* \author Adriaan de Jong <dejong@fox-it.com> * \author Adriaan de Jong <dejong@fox-it.com>
* *
* Copyright (C) 2006-2011, Brainspark B.V. * Copyright (C) 2006-2012, Brainspark B.V.
* *
* This file is part of PolarSSL (http://www.polarssl.org) * This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@ -84,6 +84,10 @@ extern const cipher_info_t des_ede3_cbc_info;
#endif /* defined(POLARSSL_DES_C) */ #endif /* defined(POLARSSL_DES_C) */
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
extern const cipher_info_t null_cipher_info;
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif

32
include/polarssl/config.h
View File

@ -129,6 +129,23 @@
*/ */
#define POLARSSL_CIPHER_MODE_CTR #define POLARSSL_CIPHER_MODE_CTR
/**
* \def POLARSSL_CIPHER_NULL_CIPHER
*
* Enable NULL cipher.
* Warning: Only do so when you know what you are doing. This allows for
* encryption or channels without any security!
*
* Requires POLARSSL_ENABLE_WEAK_CIPHERSUITES as well to enable
* the following ciphersuites:
* SSL_RSA_NULL_MD5
* SSL_RSA_NULL_SHA
* SSL_RSA_NULL_SHA256
*
* Uncomment this macro to enable the NULL cipher and ciphersuites
#define POLARSSL_CIPHER_NULL_CIPHER
*/
/** /**
* \def POLARSSL_DEBUG_MSG * \def POLARSSL_DEBUG_MSG
* *
@ -138,6 +155,21 @@
*/ */
#define POLARSSL_DEBUG_MSG #define POLARSSL_DEBUG_MSG
/**
* \def POLARSSL_ENABLE_WEAK_CIPHERSUITES
*
* Enable weak ciphersuites in SSL / TLS (like RC4_40)
* Warning: Only do so when you know what you are doing. This allows for
* channels without virtually no security at all!
*
* This enables the following ciphersuites:
* SSL_RSA_DES_SHA
* SSL_EDH_RSA_DES_SHA
*
* Uncomment this macro to enable weak ciphersuites
#define POLARSSL_ENABLE_WEAK_CIPHERSUITES
*/
/** /**
* \def POLARSSL_GENPRIME * \def POLARSSL_GENPRIME
* *

8
include/polarssl/ssl.h
View File

@ -3,7 +3,7 @@
* *
* \brief SSL/TLS functions. * \brief SSL/TLS functions.
* *
* Copyright (C) 2006-2010, Brainspark B.V. * Copyright (C) 2006-2012, Brainspark B.V.
* *
* This file is part of PolarSSL (http://www.polarssl.org) * This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@ -110,6 +110,12 @@
/* /*
* Supported ciphersuites * Supported ciphersuites
*/ */
#define SSL_RSA_NULL_MD5 0x01 /**< Weak! */
#define SSL_RSA_NULL_SHA 0x02 /**< Weak! */
#define SSL_RSA_NULL_SHA256 0x3B /**< Weak! */
#define SSL_RSA_DES_SHA 0x09 /**< Weak! */
#define SSL_EDH_RSA_DES_SHA 0x15 /**< Weak! */
#define SSL_RSA_RC4_128_MD5 0x04 #define SSL_RSA_RC4_128_MD5 0x04
#define SSL_RSA_RC4_128_SHA 0x05 #define SSL_RSA_RC4_128_SHA 0x05
#define SSL_RSA_DES_168_SHA 0x0A #define SSL_RSA_DES_168_SHA 0x0A

34
library/cipher.c
View File

@ -5,7 +5,7 @@
* *
* \author Adriaan de Jong <dejong@fox-it.com> * \author Adriaan de Jong <dejong@fox-it.com>
* *
* Copyright (C) 2006-2010, Brainspark B.V. * Copyright (C) 2006-2012, Brainspark B.V.
* *
* This file is part of PolarSSL (http://www.polarssl.org) * This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@ -86,6 +86,10 @@ static const int supported_ciphers[] = {
POLARSSL_CIPHER_DES_EDE3_CBC, POLARSSL_CIPHER_DES_EDE3_CBC,
#endif /* defined(POLARSSL_DES_C) */ #endif /* defined(POLARSSL_DES_C) */
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
POLARSSL_CIPHER_NULL,
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
0 0
}; };
@ -164,6 +168,11 @@ const cipher_info_t *cipher_info_from_type( const cipher_type_t cipher_type )
return &des_ede3_cbc_info; return &des_ede3_cbc_info;
#endif #endif
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
case POLARSSL_CIPHER_NULL:
return &null_cipher_info;
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
default: default:
return NULL; return NULL;
} }
@ -237,6 +246,12 @@ const cipher_info_t *cipher_info_from_string( const char *cipher_name )
if( !strcasecmp( "DES-EDE3-CBC", cipher_name ) ) if( !strcasecmp( "DES-EDE3-CBC", cipher_name ) )
return cipher_info_from_type( POLARSSL_CIPHER_DES_EDE3_CBC ); return cipher_info_from_type( POLARSSL_CIPHER_DES_EDE3_CBC );
#endif #endif
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
if( !strcasecmp( "NULL", cipher_name ) )
return cipher_info_from_type( POLARSSL_CIPHER_NULL );
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
return NULL; return NULL;
} }
@ -274,6 +289,11 @@ int cipher_setkey( cipher_context_t *ctx, const unsigned char *key,
ctx->key_length = key_length; ctx->key_length = key_length;
ctx->operation = operation; ctx->operation = operation;
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
if( ctx->cipher_info->mode == POLARSSL_MODE_NULL )
return 0;
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
/* /*
* For CFB128 and CTR mode always use the encryption key schedule * For CFB128 and CTR mode always use the encryption key schedule
*/ */
@ -318,6 +338,15 @@ int cipher_update( cipher_context_t *ctx, const unsigned char *input, size_t ile
*olen = 0; *olen = 0;
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
if( ctx->cipher_info->mode == POLARSSL_MODE_NULL )
{
memcpy( output, input, ilen );
*olen = ilen;
return 0;
}
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
if( ctx->cipher_info->mode == POLARSSL_MODE_CBC ) if( ctx->cipher_info->mode == POLARSSL_MODE_CBC )
{ {
/* /*
@ -465,7 +494,8 @@ int cipher_finish( cipher_context_t *ctx, unsigned char *output, size_t *olen)
*olen = 0; *olen = 0;
if( POLARSSL_MODE_CFB128 == ctx->cipher_info->mode || if( POLARSSL_MODE_CFB128 == ctx->cipher_info->mode ||
POLARSSL_MODE_CTR == ctx->cipher_info->mode ) POLARSSL_MODE_CTR == ctx->cipher_info->mode ||
POLARSSL_MODE_NULL == ctx->cipher_info->mode )
{ {
return 0; return 0;
} }

36
library/cipher_wrap.c
View File

@ -5,7 +5,7 @@
* *
* \author Adriaan de Jong <dejong@fox-it.com> * \author Adriaan de Jong <dejong@fox-it.com>
* *
* Copyright (C) 2006-2011, Brainspark B.V. * Copyright (C) 2006-2012, Brainspark B.V.
* *
* This file is part of PolarSSL (http://www.polarssl.org) * This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@ -549,4 +549,38 @@ const cipher_info_t des_ede3_cbc_info = {
}; };
#endif #endif
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
static void * null_ctx_alloc( void )
{
return (void *) 1;
}
static void null_ctx_free( void *ctx )
{
((void) ctx);
}
const cipher_base_t null_base_info = {
POLARSSL_CIPHER_ID_NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
null_ctx_alloc,
null_ctx_free
};
const cipher_info_t null_cipher_info = {
POLARSSL_CIPHER_NULL,
POLARSSL_MODE_NULL,
0,
"NULL",
1,
1,
&null_base_info
};
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
#endif #endif

8
library/ssl_cli.c
View File

@ -1,7 +1,7 @@
/* /*
* SSLv3/TLSv1 client-side functions * SSLv3/TLSv1 client-side functions
* *
* Copyright (C) 2006-2010, Brainspark B.V. * Copyright (C) 2006-2012, Brainspark B.V.
* *
* This file is part of PolarSSL (http://www.polarssl.org) * This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@ -342,7 +342,8 @@ static int ssl_parse_server_key_exchange( ssl_context *ssl )
SSL_DEBUG_MSG( 2, ( "=> parse server key exchange" ) ); SSL_DEBUG_MSG( 2, ( "=> parse server key exchange" ) );
if( ssl->session->ciphersuite != SSL_EDH_RSA_DES_168_SHA && if( ssl->session->ciphersuite != SSL_EDH_RSA_DES_SHA &&
ssl->session->ciphersuite != SSL_EDH_RSA_DES_168_SHA &&
ssl->session->ciphersuite != SSL_EDH_RSA_AES_128_SHA && ssl->session->ciphersuite != SSL_EDH_RSA_AES_128_SHA &&
ssl->session->ciphersuite != SSL_EDH_RSA_AES_256_SHA && ssl->session->ciphersuite != SSL_EDH_RSA_AES_256_SHA &&
ssl->session->ciphersuite != SSL_EDH_RSA_CAMELLIA_128_SHA && ssl->session->ciphersuite != SSL_EDH_RSA_CAMELLIA_128_SHA &&
@ -536,7 +537,8 @@ static int ssl_write_client_key_exchange( ssl_context *ssl )
SSL_DEBUG_MSG( 2, ( "=> write client key exchange" ) ); SSL_DEBUG_MSG( 2, ( "=> write client key exchange" ) );
if( ssl->session->ciphersuite == SSL_EDH_RSA_DES_168_SHA || if( ssl->session->ciphersuite == SSL_EDH_RSA_DES_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_DES_168_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_AES_128_SHA || ssl->session->ciphersuite == SSL_EDH_RSA_AES_128_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_AES_256_SHA || ssl->session->ciphersuite == SSL_EDH_RSA_AES_256_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_CAMELLIA_128_SHA || ssl->session->ciphersuite == SSL_EDH_RSA_CAMELLIA_128_SHA ||

8
library/ssl_srv.c
View File

@ -1,7 +1,7 @@
/* /*
* SSLv3/TLSv1 server-side functions * SSLv3/TLSv1 server-side functions
* *
* Copyright (C) 2006-2010, Brainspark B.V. * Copyright (C) 2006-2012, Brainspark B.V.
* *
* This file is part of PolarSSL (http://www.polarssl.org) * This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@ -544,7 +544,8 @@ static int ssl_write_server_key_exchange( ssl_context *ssl )
SSL_DEBUG_MSG( 2, ( "=> write server key exchange" ) ); SSL_DEBUG_MSG( 2, ( "=> write server key exchange" ) );
if( ssl->session->ciphersuite != SSL_EDH_RSA_DES_168_SHA && if( ssl->session->ciphersuite != SSL_EDH_RSA_DES_SHA &&
ssl->session->ciphersuite != SSL_EDH_RSA_DES_168_SHA &&
ssl->session->ciphersuite != SSL_EDH_RSA_AES_128_SHA && ssl->session->ciphersuite != SSL_EDH_RSA_AES_128_SHA &&
ssl->session->ciphersuite != SSL_EDH_RSA_AES_256_SHA && ssl->session->ciphersuite != SSL_EDH_RSA_AES_256_SHA &&
ssl->session->ciphersuite != SSL_EDH_RSA_CAMELLIA_128_SHA && ssl->session->ciphersuite != SSL_EDH_RSA_CAMELLIA_128_SHA &&
@ -716,7 +717,8 @@ static int ssl_parse_client_key_exchange( ssl_context *ssl )
return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE ); return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
} }
if( ssl->session->ciphersuite == SSL_EDH_RSA_DES_168_SHA || if( ssl->session->ciphersuite == SSL_EDH_RSA_DES_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_DES_168_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_AES_128_SHA || ssl->session->ciphersuite == SSL_EDH_RSA_AES_128_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_AES_256_SHA || ssl->session->ciphersuite == SSL_EDH_RSA_AES_256_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_CAMELLIA_128_SHA || ssl->session->ciphersuite == SSL_EDH_RSA_CAMELLIA_128_SHA ||

179
library/ssl_tls.c
View File

@ -1,7 +1,7 @@
/* /*
* SSLv3/TLSv1 shared functions * SSLv3/TLSv1 shared functions
* *
* Copyright (C) 2006-2010, Brainspark B.V. * Copyright (C) 2006-2012, Brainspark B.V.
* *
* This file is part of PolarSSL (http://www.polarssl.org) * This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@ -41,6 +41,7 @@
#include "polarssl/des.h" #include "polarssl/des.h"
#include "polarssl/debug.h" #include "polarssl/debug.h"
#include "polarssl/ssl.h" #include "polarssl/ssl.h"
#include "polarssl/sha2.h"
#include <stdlib.h> #include <stdlib.h>
#include <time.h> #include <time.h>
@ -277,6 +278,33 @@ int ssl_derive_keys( ssl_context *ssl )
break; break;
#endif #endif
#if defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES)
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
case SSL_RSA_NULL_MD5:
ssl->keylen = 0; ssl->minlen = 0;
ssl->ivlen = 0; ssl->maclen = 16;
break;
case SSL_RSA_NULL_SHA:
ssl->keylen = 0; ssl->minlen = 0;
ssl->ivlen = 0; ssl->maclen = 20;
break;
case SSL_RSA_NULL_SHA256:
ssl->keylen = 0; ssl->minlen = 0;
ssl->ivlen = 0; ssl->maclen = 32;
break;
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
#if defined(POLARSSL_DES_C)
case SSL_RSA_DES_SHA:
case SSL_EDH_RSA_DES_SHA:
ssl->keylen = 8; ssl->minlen = 8;
ssl->ivlen = 8; ssl->maclen = 20;
break;
#endif
#endif /* defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES) */
default: default:
SSL_DEBUG_MSG( 1, ( "ciphersuite %s is not available", SSL_DEBUG_MSG( 1, ( "ciphersuite %s is not available",
ssl_get_ciphersuite( ssl ) ) ); ssl_get_ciphersuite( ssl ) ) );
@ -366,6 +394,23 @@ int ssl_derive_keys( ssl_context *ssl )
break; break;
#endif #endif
#if defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES)
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
case SSL_RSA_NULL_MD5:
case SSL_RSA_NULL_SHA:
case SSL_RSA_NULL_SHA256:
break;
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
#if defined(POLARSSL_DES_C)
case SSL_RSA_DES_SHA:
case SSL_EDH_RSA_DES_SHA:
des_setkey_enc( (des_context *) ssl->ctx_enc, key1 );
des_setkey_dec( (des_context *) ssl->ctx_dec, key2 );
break;
#endif
#endif /* defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES) */
default: default:
return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE ); return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
} }
@ -521,7 +566,12 @@ static int ssl_encrypt_buf( ssl_context *ssl )
if( ssl->maclen == 20 ) if( ssl->maclen == 20 )
sha1_hmac( ssl->mac_enc, 20, sha1_hmac( ssl->mac_enc, 20,
ssl->out_ctr, ssl->out_msglen + 13, ssl->out_ctr, ssl->out_msglen + 13,
ssl->out_msg + ssl->out_msglen ); ssl->out_msg + ssl->out_msglen );
if( ssl->maclen == 32 )
sha2_hmac( ssl->mac_enc, 32,
ssl->out_ctr, ssl->out_msglen + 13,
ssl->out_msg + ssl->out_msglen, 0);
} }
SSL_DEBUG_BUF( 4, "computed mac", SSL_DEBUG_BUF( 4, "computed mac",
@ -535,7 +585,6 @@ static int ssl_encrypt_buf( ssl_context *ssl )
if( ssl->ivlen == 0 ) if( ssl->ivlen == 0 )
{ {
#if defined(POLARSSL_ARC4_C)
padlen = 0; padlen = 0;
SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, " SSL_DEBUG_MSG( 3, ( "before encrypt: msglen = %d, "
@ -545,12 +594,23 @@ static int ssl_encrypt_buf( ssl_context *ssl )
SSL_DEBUG_BUF( 4, "before encrypt: output payload", SSL_DEBUG_BUF( 4, "before encrypt: output payload",
ssl->out_msg, ssl->out_msglen ); ssl->out_msg, ssl->out_msglen );
arc4_crypt( (arc4_context *) ssl->ctx_enc, #if defined(POLARSSL_ARC4_C)
ssl->out_msglen, ssl->out_msg, if( ssl->session->ciphersuite == SSL_RSA_RC4_128_MD5 ||
ssl->out_msg ); ssl->session->ciphersuite == SSL_RSA_RC4_128_SHA )
#else {
return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE ); arc4_crypt( (arc4_context *) ssl->ctx_enc,
ssl->out_msglen, ssl->out_msg,
ssl->out_msg );
} else
#endif #endif
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
if( ssl->session->ciphersuite == SSL_RSA_NULL_MD5 ||
ssl->session->ciphersuite == SSL_RSA_NULL_SHA ||
ssl->session->ciphersuite == SSL_RSA_NULL_SHA256 )
{
} else
#endif
return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
} }
else else
{ {
@ -605,11 +665,21 @@ static int ssl_encrypt_buf( ssl_context *ssl )
switch( ssl->ivlen ) switch( ssl->ivlen )
{ {
case 8:
#if defined(POLARSSL_DES_C) #if defined(POLARSSL_DES_C)
des3_crypt_cbc( (des3_context *) ssl->ctx_enc, case 8:
DES_ENCRYPT, enc_msglen, #if defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES)
ssl->iv_enc, enc_msg, enc_msg ); if( ssl->session->ciphersuite == SSL_RSA_DES_SHA ||
ssl->session->ciphersuite == SSL_EDH_RSA_DES_SHA )
{
des_crypt_cbc( (des_context *) ssl->ctx_enc,
DES_ENCRYPT, enc_msglen,
ssl->iv_enc, enc_msg, enc_msg );
}
else
#endif
des3_crypt_cbc( (des3_context *) ssl->ctx_enc,
DES_ENCRYPT, enc_msglen,
ssl->iv_enc, enc_msg, enc_msg );
break; break;
#endif #endif
@ -650,10 +720,15 @@ static int ssl_encrypt_buf( ssl_context *ssl )
return( 0 ); return( 0 );
} }
/*
* TODO: Use digest version when integrated!
*/
#define POLARSSL_SSL_MAX_MAC_SIZE 32
static int ssl_decrypt_buf( ssl_context *ssl ) static int ssl_decrypt_buf( ssl_context *ssl )
{ {
size_t i, padlen; size_t i, padlen;
unsigned char tmp[20]; unsigned char tmp[POLARSSL_SSL_MAX_MAC_SIZE];
SSL_DEBUG_MSG( 2, ( "=> decrypt buf" ) ); SSL_DEBUG_MSG( 2, ( "=> decrypt buf" ) );
@ -668,12 +743,22 @@ static int ssl_decrypt_buf( ssl_context *ssl )
{ {
#if defined(POLARSSL_ARC4_C) #if defined(POLARSSL_ARC4_C)
padlen = 0; padlen = 0;
arc4_crypt( (arc4_context *) ssl->ctx_dec, if( ssl->session->ciphersuite == SSL_RSA_RC4_128_MD5 ||
ssl->session->ciphersuite == SSL_RSA_RC4_128_SHA )
{
arc4_crypt( (arc4_context *) ssl->ctx_dec,
ssl->in_msglen, ssl->in_msg, ssl->in_msglen, ssl->in_msg,
ssl->in_msg ); ssl->in_msg );
#else } else
return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
#endif #endif
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
if( ssl->session->ciphersuite == SSL_RSA_NULL_MD5 ||
ssl->session->ciphersuite == SSL_RSA_NULL_SHA ||
ssl->session->ciphersuite == SSL_RSA_NULL_SHA256 )
{
} else
#endif
return( POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE );
} }
else else
{ {
@ -712,9 +797,19 @@ static int ssl_decrypt_buf( ssl_context *ssl )
{ {
#if defined(POLARSSL_DES_C) #if defined(POLARSSL_DES_C)
case 8: case 8:
des3_crypt_cbc( (des3_context *) ssl->ctx_dec, #if defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES)
DES_DECRYPT, dec_msglen, if( ssl->session->ciphersuite == SSL_RSA_DES_SHA ||
ssl->iv_dec, dec_msg, dec_msg_result ); ssl->session->ciphersuite == SSL_EDH_RSA_DES_SHA )
{
des_crypt_cbc( (des_context *) ssl->ctx_dec,
DES_DECRYPT, dec_msglen,
ssl->iv_dec, dec_msg, dec_msg_result );
}
else
#endif
des3_crypt_cbc( (des3_context *) ssl->ctx_dec,
DES_DECRYPT, dec_msglen,
ssl->iv_dec, dec_msg, dec_msg_result );
break; break;
#endif #endif
@ -790,7 +885,7 @@ static int ssl_decrypt_buf( ssl_context *ssl )
ssl->in_hdr[3] = (unsigned char)( ssl->in_msglen >> 8 ); ssl->in_hdr[3] = (unsigned char)( ssl->in_msglen >> 8 );
ssl->in_hdr[4] = (unsigned char)( ssl->in_msglen ); ssl->in_hdr[4] = (unsigned char)( ssl->in_msglen );
memcpy( tmp, ssl->in_msg + ssl->in_msglen, 20 ); memcpy( tmp, ssl->in_msg + ssl->in_msglen, POLARSSL_SSL_MAX_MAC_SIZE );
if( ssl->minor_ver == SSL_MINOR_VERSION_0 ) if( ssl->minor_ver == SSL_MINOR_VERSION_0 )
{ {
@ -798,7 +893,7 @@ static int ssl_decrypt_buf( ssl_context *ssl )
ssl_mac_md5( ssl->mac_dec, ssl_mac_md5( ssl->mac_dec,
ssl->in_msg, ssl->in_msglen, ssl->in_msg, ssl->in_msglen,
ssl->in_ctr, ssl->in_msgtype ); ssl->in_ctr, ssl->in_msgtype );
else else if( ssl->maclen == 20 )
ssl_mac_sha1( ssl->mac_dec, ssl_mac_sha1( ssl->mac_dec,
ssl->in_msg, ssl->in_msglen, ssl->in_msg, ssl->in_msglen,
ssl->in_ctr, ssl->in_msgtype ); ssl->in_ctr, ssl->in_msgtype );
@ -809,10 +904,14 @@ static int ssl_decrypt_buf( ssl_context *ssl )
md5_hmac( ssl->mac_dec, 16, md5_hmac( ssl->mac_dec, 16,
ssl->in_ctr, ssl->in_msglen + 13, ssl->in_ctr, ssl->in_msglen + 13,
ssl->in_msg + ssl->in_msglen ); ssl->in_msg + ssl->in_msglen );
else else if( ssl->maclen == 20 )
sha1_hmac( ssl->mac_dec, 20, sha1_hmac( ssl->mac_dec, 20,
ssl->in_ctr, ssl->in_msglen + 13, ssl->in_ctr, ssl->in_msglen + 13,
ssl->in_msg + ssl->in_msglen ); ssl->in_msg + ssl->in_msglen );
else if( ssl->maclen == 32 )
sha2_hmac( ssl->mac_dec, 32,
ssl->in_ctr, ssl->in_msglen + 13,
ssl->in_msg + ssl->in_msglen, 0 );
} }
SSL_DEBUG_BUF( 4, "message mac", tmp, ssl->maclen ); SSL_DEBUG_BUF( 4, "message mac", tmp, ssl->maclen );
@ -1991,6 +2090,24 @@ const char *ssl_get_ciphersuite_name( const int ciphersuite_id )
return( "SSL-EDH-RSA-CAMELLIA-256-SHA" ); return( "SSL-EDH-RSA-CAMELLIA-256-SHA" );
#endif #endif
#if defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES)
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
case SSL_RSA_NULL_MD5:
return( "SSL-RSA-NULL-MD5" );
case SSL_RSA_NULL_SHA:
return( "SSL-RSA-NULL-SHA" );
case SSL_RSA_NULL_SHA256:
return( "SSL-RSA-NULL-SHA256" );
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
#if defined(POLARSSL_DES_C)
case SSL_RSA_DES_SHA:
return( "SSL-RSA-DES-SHA" );
case SSL_EDH_RSA_DES_SHA:
return( "SSL-EDH-RSA-DES-SHA" );
#endif
#endif /* defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES) */
default: default:
break; break;
} }
@ -2036,6 +2153,24 @@ int ssl_get_ciphersuite_id( const char *ciphersuite_name )
return( SSL_EDH_RSA_CAMELLIA_256_SHA ); return( SSL_EDH_RSA_CAMELLIA_256_SHA );
#endif #endif
#if defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES)
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
if (0 == strcasecmp(ciphersuite_name, "SSL-RSA-NULL-MD5"))
return( SSL_RSA_NULL_MD5 );
if (0 == strcasecmp(ciphersuite_name, "SSL-RSA-NULL-SHA"))
return( SSL_RSA_NULL_SHA );
if (0 == strcasecmp(ciphersuite_name, "SSL-RSA-NULL-SHA256"))
return( SSL_RSA_NULL_SHA256 );
#endif /* defined(POLARSSL_CIPHER_NULL_CIPHER) */
#if defined(POLARSSL_DES_C)
if (0 == strcasecmp(ciphersuite_name, "SSL-RSA-DES-SHA"))
return( SSL_RSA_DES_SHA );
if (0 == strcasecmp(ciphersuite_name, "SSL-EDH-RSA-DES-SHA"))
return( SSL_EDH_RSA_DES_SHA );
#endif
#endif /* defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES) */
return( 0 ); return( 0 );
} }

8
programs/ssl/ssl_client2.c
View File

@ -144,6 +144,9 @@ int main( int argc, char *argv[] )
if( argc == 0 ) if( argc == 0 )
{ {
usage: usage:
if( ret == 0 )
ret = 1;
printf( USAGE ); printf( USAGE );
list = ssl_list_ciphersuites(); list = ssl_list_ciphersuites();
@ -153,7 +156,6 @@ int main( int argc, char *argv[] )
list++; list++;
} }
printf("\n"); printf("\n");
ret = 1;
goto exit; goto exit;
} }
@ -210,8 +212,10 @@ int main( int argc, char *argv[] )
opt.force_ciphersuite[0] = ssl_get_ciphersuite_id( q ); opt.force_ciphersuite[0] = ssl_get_ciphersuite_id( q );
if( opt.force_ciphersuite[0] <= 0 ) if( opt.force_ciphersuite[0] <= 0 )
{
ret = 2;
goto usage; goto usage;
}
opt.force_ciphersuite[1] = 0; opt.force_ciphersuite[1] = 0;
} }
else else

12
programs/ssl/ssl_server.c
View File

@ -84,6 +84,15 @@ int my_ciphersuites[] =
SSL_RSA_DES_168_SHA, SSL_RSA_DES_168_SHA,
SSL_RSA_RC4_128_SHA, SSL_RSA_RC4_128_SHA,
SSL_RSA_RC4_128_MD5, SSL_RSA_RC4_128_MD5,
#if defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES)
SSL_EDH_RSA_DES_SHA,
SSL_RSA_DES_SHA,
#if defined(POLARSSL_CIPHER_NULL_CIPHER)
SSL_RSA_NULL_MD5,
SSL_RSA_NULL_SHA,
SSL_RSA_NULL_SHA256,
#endif
#endif
0 0
}; };
@ -206,6 +215,8 @@ int main( int argc, char *argv[] )
((void) argc); ((void) argc);
((void) argv); ((void) argv);
memset( &ssl, 0, sizeof( ssl_context ) );
/* /*
* 1. Load the certificates and private RSA key * 1. Load the certificates and private RSA key
*/ */
@ -448,7 +459,6 @@ reset:
len = ret; len = ret;
printf( " %d bytes written\n\n%s\n", len, (char *) buf ); printf( " %d bytes written\n\n%s\n", len, (char *) buf );
ssl_close_notify( &ssl );
ret = 0; ret = 0;
goto reset; goto reset;

1
tests/CMakeLists.txt
View File

@ -34,6 +34,7 @@ add_test_suite(camellia)
add_test_suite(cipher cipher.aes) add_test_suite(cipher cipher.aes)
add_test_suite(cipher cipher.camellia) add_test_suite(cipher cipher.camellia)
add_test_suite(cipher cipher.des) add_test_suite(cipher cipher.des)
add_test_suite(cipher cipher.null)
add_test_suite(ctr_drbg) add_test_suite(ctr_drbg)
add_test_suite(debug) add_test_suite(debug)
add_test_suite(des) add_test_suite(des)

16
tests/Makefile
View File

@ -12,8 +12,8 @@ LDFLAGS += -L../library -lpolarssl $(SYS_LDFLAGS)
APPS = test_suite_aes test_suite_arc4 \ APPS = test_suite_aes test_suite_arc4 \
test_suite_base64 test_suite_camellia \ test_suite_base64 test_suite_camellia \
test_suite_cipher.aes test_suite_cipher.camellia \ test_suite_cipher.aes test_suite_cipher.camellia \
test_suite_cipher.des test_suite_ctr_drbg \ test_suite_cipher.des test_suite_cipher.null \
test_suite_debug \ test_suite_ctr_drbg test_suite_debug \
test_suite_des test_suite_dhm \ test_suite_des test_suite_dhm \
test_suite_error test_suite_hmac_shax \ test_suite_error test_suite_hmac_shax \
test_suite_md test_suite_mdx \ test_suite_md test_suite_mdx \
@ -38,6 +38,10 @@ test_suite_cipher.des.c : suites/test_suite_cipher.function suites/test_suite_ci
echo " Generate $@" echo " Generate $@"
scripts/generate_code.pl suites test_suite_cipher test_suite_cipher.des scripts/generate_code.pl suites test_suite_cipher test_suite_cipher.des
test_suite_cipher.null.c : suites/test_suite_cipher.function suites/test_suite_cipher.null.data scripts/generate_code.pl suites/helpers.function
echo " Generate $@"
scripts/generate_code.pl suites test_suite_cipher test_suite_cipher.null
%.c : suites/%.function suites/%.data scripts/generate_code.pl suites/helpers.function %.c : suites/%.function suites/%.data scripts/generate_code.pl suites/helpers.function
echo " Generate $@" echo " Generate $@"
scripts/generate_code.pl suites $* $* scripts/generate_code.pl suites $* $*
@ -66,11 +70,15 @@ test_suite_cipher.camellia: test_suite_cipher.camellia.c ../library/libpolarssl.
echo " CC $@.c" echo " CC $@.c"
$(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@ $(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@
test_suite_ctr_drbg: test_suite_ctr_drbg.c ../library/libpolarssl.a test_suite_cipher.des: test_suite_cipher.des.c ../library/libpolarssl.a
echo " CC $@.c" echo " CC $@.c"
$(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@ $(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@
test_suite_cipher.des: test_suite_cipher.des.c ../library/libpolarssl.a test_suite_cipher.null: test_suite_cipher.null.c ../library/libpolarssl.a
echo " CC $@.c"
$(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@
test_suite_ctr_drbg: test_suite_ctr_drbg.c ../library/libpolarssl.a
echo " CC $@.c" echo " CC $@.c"
$(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@ $(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@

136
tests/compat.sh Normal file
View File

@ -0,0 +1,136 @@
killall -q openssl ssl_server
openssl s_server -cert data_files/server2.crt -key data_files/server2.key -www -quiet -cipher NULL,ALL &
PROCESS_ID=$!
sleep 1
CIPHERS=" \
SSL-EDH-RSA-AES-128-SHA \
SSL-EDH-RSA-AES-256-SHA \
SSL-EDH-RSA-CAMELLIA-128-SHA \
SSL-EDH-RSA-CAMELLIA-256-SHA \
SSL-EDH-RSA-DES-168-SHA \
SSL-RSA-AES-256-SHA \
SSL-RSA-CAMELLIA-256-SHA \
SSL-RSA-AES-128-SHA \
SSL-RSA-CAMELLIA-128-SHA \
SSL-RSA-DES-168-SHA \
SSL-RSA-RC4-128-SHA \
SSL-RSA-RC4-128-MD5 \
SSL-RSA-NULL-MD5 \
SSL-RSA-NULL-SHA \
SSL-RSA-DES-SHA \
SSL-EDH-RSA-DES-SHA \
"
# Not supported by OpenSSL: SSL-RSA-NULL-SHA256
for i in $CIPHERS;
do
RESULT="$( ../programs/ssl/ssl_client2 force_ciphersuite=$i )"
EXIT=$?
echo -n "OpenSSL Server - PolarSSL Client - $i : $EXIT - "
if [ "$EXIT" = "2" ];
then
echo Ciphersuite not supported in client
elif [ "$EXIT" != "0" ];
then
echo Failed
echo $RESULT
else
echo Success
fi
done
kill $PROCESS_ID
../programs/ssl/ssl_server > /dev/null &
PROCESS_ID=$!
sleep 1
CIPHERS=" \
DHE-RSA-AES128-SHA \
DHE-RSA-AES256-SHA \
DHE-RSA-CAMELLIA128-SHA \
DHE-RSA-CAMELLIA256-SHA \
EDH-RSA-DES-CBC3-SHA \
AES256-SHA \
CAMELLIA256-SHA \
AES128-SHA \
CAMELLIA128-SHA \
DES-CBC3-SHA \
RC4-SHA \
RC4-MD5 \
NULL-MD5 \
NULL-SHA \
DES-CBC-SHA \
EDH-RSA-DES-CBC-SHA \
"
# Not supported by OpenSSL: NULL-SHA256
for i in $CIPHERS;
do
RESULT="$( ( echo -e 'GET HTTP/1.0'; echo; sleep 1 ) | openssl s_client -cipher $i 2>&1)"
EXIT=$?
echo -n "PolarSSL Server - OpenSSL Client - $i : $EXIT - "
if [ "$EXIT" != "0" ];
then
SUPPORTED="$( echo $RESULT | grep 'Cipher is (NONE)' )"
if [ "X$SUPPORTED" != "X" ]
then
echo "Ciphersuite not supported in server"
else
echo Failed
echo $RESULT
fi
else
echo Success
fi
done
kill $PROCESS_ID
../programs/ssl/ssl_server > /dev/null &
PROCESS_ID=$!
sleep 1
CIPHERS=" \
SSL-RSA-RC4-128-SHA \
SSL-RSA-NULL-MD5 \
SSL-EDH-RSA-AES-128-SHA \
SSL-EDH-RSA-AES-256-SHA \
SSL-EDH-RSA-CAMELLIA-128-SHA \
SSL-EDH-RSA-CAMELLIA-256-SHA \
SSL-EDH-RSA-DES-168-SHA \
SSL-RSA-NULL-SHA \
SSL-RSA-AES-256-SHA \
SSL-RSA-CAMELLIA-256-SHA \
SSL-RSA-AES-128-SHA \
SSL-RSA-CAMELLIA-128-SHA \
SSL-RSA-DES-168-SHA \
SSL-RSA-RC4-128-MD5 \
SSL-RSA-DES-SHA \
SSL-EDH-RSA-DES-SHA \
SSL-RSA-NULL-SHA256 \
"
for i in $CIPHERS;
do
RESULT="$( ../programs/ssl/ssl_client2 force_ciphersuite=$i )"
EXIT=$?
echo -n "PolarSSL Server - PolarSSL Client - $i : $EXIT - "
if [ "$EXIT" = "2" ];
then
echo Ciphersuite not supported in client
elif [ "$EXIT" != "0" ];
then
echo Failed
echo $RESULT
else
echo Success
fi
done
kill $PROCESS_ID

102
tests/suites/test_suite_cipher.null.data Normal file
View File

@ -0,0 +1,102 @@
Cipher Selftest
depends_on:POLARSSL_SELF_TEST
cipher_selftest:
Decrypt empty buffer
dec_empty_buf:
NULL Encrypt and decrypt 0 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:0
NULL Encrypt and decrypt 1 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:1
NULL Encrypt and decrypt 2 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:2
NULL Encrypt and decrypt 7 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:7
NULL Encrypt and decrypt 8 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:8
NULL Encrypt and decrypt 9 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:9
NULL Encrypt and decrypt 15 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:15
NULL Encrypt and decrypt 16 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:16
NULL Encrypt and decrypt 31 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:31
NULL Encrypt and decrypt 32 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:32
NULL Encrypt and decrypt 33 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:33
NULL Encrypt and decrypt 47 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:47
NULL Encrypt and decrypt 48 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:48
NULL Encrypt and decrypt 49 bytes
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf:POLARSSL_CIPHER_NULL:NULL:0:49
NULL Encrypt and decrypt 1 bytes in multiple parts 1
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:1:0:
NULL Encrypt and decrypt 1 bytes in multiple parts 2
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:0:1:
NULL Encrypt and decrypt 16 bytes in multiple parts 1
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:16:0:
NULL Encrypt and decrypt 16 bytes in multiple parts 2
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:0:16:
NULL Encrypt and decrypt 16 bytes in multiple parts 3
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:1:15:
NULL Encrypt and decrypt 16 bytes in multiple parts 4
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:15:1:
NULL Encrypt and decrypt 22 bytes in multiple parts 1
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:15:7:
NULL Encrypt and decrypt 22 bytes in multiple parts 1
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:16:6:
NULL Encrypt and decrypt 22 bytes in multiple parts 1
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:17:6:
NULL Encrypt and decrypt 32 bytes in multiple parts 1
depends_on:POLARSSL_CIPHER_NULL_CIPHER
enc_dec_buf_multipart:POLARSSL_CIPHER_NULL:0:16:16: