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mbedtls/programs/test/benchmark.c
Gilles Peskine 7820a574f1 Catch failures of AES or DES operations 
Declare all AES and DES functions that return int as needing to have
their result checked, and do check the result in our code.

A DES or AES block operation can fail in alternative implementations of
mbedtls_internal_aes_encrypt() (under MBEDTLS_AES_ENCRYPT_ALT),
mbedtls_internal_aes_decrypt() (under MBEDTLS_AES_DECRYPT_ALT),
mbedtls_des_crypt_ecb() (under MBEDTLS_DES_CRYPT_ECB_ALT),
mbedtls_des3_crypt_ecb() (under MBEDTLS_DES3_CRYPT_ECB_ALT).
A failure can happen if the accelerator peripheral is in a bad state.
Several block modes were not catching the error.

This commit does the following code changes, grouped together to avoid
having an intermediate commit where the build fails:

* Add MBEDTLS_CHECK_RETURN to all functions returning int in aes.h and des.h.
* Fix all places where this causes a GCC warning, indicating that our code
  was not properly checking the result of an AES operation:
    * In library code: on failure, goto exit and return ret.
    * In pkey programs: goto exit.
    * In the benchmark program: exit (not ideal since there's no error
      message, but it's what the code currently does for failures).
    * In test code: TEST_ASSERT.
* Changelog entry.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-09-27 16:22:08 +02:00

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/*
* Benchmark demonstration program
*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define MBEDTLS_ALLOW_PRIVATE_ACCESS
#include "mbedtls/build_info.h"
#include "mbedtls/platform.h"
#if !defined(MBEDTLS_PLATFORM_C)
#include <stdio.h>
#include <stdlib.h>
#define mbedtls_exit exit
#define mbedtls_printf printf
#define mbedtls_free free
#endif
#if !defined(MBEDTLS_TIMING_C)
int main( void )
{
mbedtls_printf("MBEDTLS_TIMING_C not defined.\n");
mbedtls_exit( 0 );
}
#else
#include <string.h>
#include <stdlib.h>
#include "mbedtls/timing.h"
#include "mbedtls/md5.h"
#include "mbedtls/ripemd160.h"
#include "mbedtls/sha1.h"
#include "mbedtls/sha256.h"
#include "mbedtls/sha512.h"
#include "mbedtls/des.h"
#include "mbedtls/aes.h"
#include "mbedtls/aria.h"
#include "mbedtls/camellia.h"
#include "mbedtls/chacha20.h"
#include "mbedtls/gcm.h"
#include "mbedtls/ccm.h"
#include "mbedtls/chachapoly.h"
#include "mbedtls/cmac.h"
#include "mbedtls/poly1305.h"
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/hmac_drbg.h"
#include "mbedtls/rsa.h"
#include "mbedtls/dhm.h"
#include "mbedtls/ecdsa.h"
#include "mbedtls/ecdh.h"
#include "mbedtls/error.h"
#ifndef asm
#define asm __asm
#endif
#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
#include <windows.h>
#include <process.h>
struct _hr_time
{
LARGE_INTEGER start;
};
#else
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <signal.h>
#include <time.h>
struct _hr_time
{
struct timeval start;
};
#endif /* _WIN32 && !EFIX64 && !EFI32 */
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#include "mbedtls/memory_buffer_alloc.h"
#endif
static void mbedtls_set_alarm( int seconds );
/*
* For heap usage estimates, we need an estimate of the overhead per allocated
* block. ptmalloc2/3 (used in gnu libc for instance) uses 2 size_t per block,
* so use that as our baseline.
*/
#define MEM_BLOCK_OVERHEAD ( 2 * sizeof( size_t ) )
/*
* Size to use for the alloc buffer if MEMORY_BUFFER_ALLOC_C is defined.
*/
#define HEAP_SIZE (1u << 16) /* 64k */
#define BUFSIZE 1024
#define HEADER_FORMAT " %-24s : "
#define TITLE_LEN 25
#define OPTIONS \
"md5, ripemd160, sha1, sha256, sha512,\n" \
"des3, des, camellia, chacha20,\n" \
"aes_cbc, aes_gcm, aes_ccm, aes_xts, chachapoly,\n" \
"aes_cmac, des3_cmac, poly1305\n" \
"ctr_drbg, hmac_drbg\n" \
"rsa, dhm, ecdsa, ecdh.\n"
#if defined(MBEDTLS_ERROR_C)
#define PRINT_ERROR \
mbedtls_strerror( ret, ( char * )tmp, sizeof( tmp ) ); \
mbedtls_printf( "FAILED: %s\n", tmp );
#else
#define PRINT_ERROR \
mbedtls_printf( "FAILED: -0x%04x\n", (unsigned int) -ret );
#endif
#define TIME_AND_TSC( TITLE, CODE ) \
do { \
unsigned long ii, jj, tsc; \
int ret = 0; \
\
mbedtls_printf( HEADER_FORMAT, TITLE ); \
fflush( stdout ); \
\
mbedtls_set_alarm( 1 ); \
for( ii = 1; ret == 0 && ! mbedtls_timing_alarmed; ii++ ) \
{ \
ret = CODE; \
} \
\
tsc = mbedtls_timing_hardclock(); \
for( jj = 0; ret == 0 && jj < 1024; jj++ ) \
{ \
ret = CODE; \
} \
\
if( ret != 0 ) \
{ \
PRINT_ERROR; \
} \
else \
{ \
mbedtls_printf( "%9lu KiB/s, %9lu cycles/byte\n", \
ii * BUFSIZE / 1024, \
( mbedtls_timing_hardclock() - tsc ) \
/ ( jj * BUFSIZE ) ); \
} \
} while( 0 )
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) && defined(MBEDTLS_MEMORY_DEBUG)
/* How much space to reserve for the title when printing heap usage results.
* Updated manually as the output of the following command:
*
* sed -n 's/.*[T]IME_PUBLIC.*"\(.*\)",/\1/p' programs/test/benchmark.c |
* awk '{print length+2}' | sort -rn | head -n1
*
* This computes the maximum length of a title +2 (because we appends "/s").
* (If the value is too small, the only consequence is poor alignement.) */
#define TITLE_SPACE 16
#define MEMORY_MEASURE_INIT \
size_t max_used, max_blocks, max_bytes; \
size_t prv_used, prv_blocks; \
mbedtls_memory_buffer_alloc_cur_get( &prv_used, &prv_blocks ); \
mbedtls_memory_buffer_alloc_max_reset( );
#define MEMORY_MEASURE_PRINT( title_len ) \
mbedtls_memory_buffer_alloc_max_get( &max_used, &max_blocks ); \
ii = TITLE_SPACE > (title_len) ? TITLE_SPACE - (title_len) : 1; \
while( ii-- ) mbedtls_printf( " " ); \
max_used -= prv_used; \
max_blocks -= prv_blocks; \
max_bytes = max_used + MEM_BLOCK_OVERHEAD * max_blocks; \
mbedtls_printf( "%6u heap bytes", (unsigned) max_bytes );
#else
#define MEMORY_MEASURE_INIT
#define MEMORY_MEASURE_PRINT( title_len )
#endif
#define TIME_PUBLIC( TITLE, TYPE, CODE ) \
do { \
unsigned long ii; \
int ret; \
MEMORY_MEASURE_INIT; \
\
mbedtls_printf( HEADER_FORMAT, TITLE ); \
fflush( stdout ); \
mbedtls_set_alarm( 3 ); \
\
ret = 0; \
for( ii = 1; ! mbedtls_timing_alarmed && ! ret ; ii++ ) \
{ \
CODE; \
} \
\
if( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED ) \
{ \
mbedtls_printf( "Feature Not Supported. Skipping.\n" ); \
ret = 0; \
} \
else if( ret != 0 ) \
{ \
PRINT_ERROR; \
} \
else \
{ \
mbedtls_printf( "%6lu " TYPE "/s", ii / 3 ); \
MEMORY_MEASURE_PRINT( sizeof( TYPE ) + 1 ); \
mbedtls_printf( "\n" ); \
} \
} while( 0 )
#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
( defined(_MSC_VER) && defined(_M_IX86) ) || defined(__WATCOMC__)
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
unsigned long tsc;
__asm rdtsc
__asm mov [tsc], eax
return( tsc );
}
#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
( _MSC_VER && _M_IX86 ) || __WATCOMC__ */
/* some versions of mingw-64 have 32-bit longs even on x84_64 */
#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
defined(__GNUC__) && ( defined(__i386__) || ( \
( defined(__amd64__) || defined( __x86_64__) ) && __SIZEOF_LONG__ == 4 ) )
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
unsigned long lo, hi;
asm volatile( "rdtsc" : "=a" (lo), "=d" (hi) );
return( lo );
}
#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
__GNUC__ && __i386__ */
#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
defined(__GNUC__) && ( defined(__amd64__) || defined(__x86_64__) )
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
unsigned long lo, hi;
asm volatile( "rdtsc" : "=a" (lo), "=d" (hi) );
return( lo | ( hi << 32 ) );
}
#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
__GNUC__ && ( __amd64__ || __x86_64__ ) */
#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
defined(__GNUC__) && ( defined(__powerpc__) || defined(__ppc__) )
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
unsigned long tbl, tbu0, tbu1;
do
{
asm volatile( "mftbu %0" : "=r" (tbu0) );
asm volatile( "mftb %0" : "=r" (tbl ) );
asm volatile( "mftbu %0" : "=r" (tbu1) );
}
while( tbu0 != tbu1 );
return( tbl );
}
#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
__GNUC__ && ( __powerpc__ || __ppc__ ) */
#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
defined(__GNUC__) && defined(__sparc64__)
#if defined(__OpenBSD__)
#warning OpenBSD does not allow access to tick register using software version instead
#else
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
unsigned long tick;
asm volatile( "rdpr %%tick, %0;" : "=&r" (tick) );
return( tick );
}
#endif /* __OpenBSD__ */
#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
__GNUC__ && __sparc64__ */
#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
defined(__GNUC__) && defined(__sparc__) && !defined(__sparc64__)
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
unsigned long tick;
asm volatile( ".byte 0x83, 0x41, 0x00, 0x00" );
asm volatile( "mov %%g1, %0" : "=r" (tick) );
return( tick );
}
#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
__GNUC__ && __sparc__ && !__sparc64__ */
#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
defined(__GNUC__) && defined(__alpha__)
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
unsigned long cc;
asm volatile( "rpcc %0" : "=r" (cc) );
return( cc & 0xFFFFFFFF );
}
#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
__GNUC__ && __alpha__ */
#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
defined(__GNUC__) && defined(__ia64__)
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
unsigned long itc;
asm volatile( "mov %0 = ar.itc" : "=r" (itc) );
return( itc );
}
#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
__GNUC__ && __ia64__ */
#if !defined(HAVE_HARDCLOCK) && defined(_MSC_VER) && \
!defined(EFIX64) && !defined(EFI32)
#define HAVE_HARDCLOCK
static unsigned long mbedtls_timing_hardclock( void )
{
LARGE_INTEGER offset;
QueryPerformanceCounter( &offset );
return( (unsigned long)( offset.QuadPart ) );
}
#endif /* !HAVE_HARDCLOCK && _MSC_VER && !EFIX64 && !EFI32 */
#if !defined(HAVE_HARDCLOCK)
#define HAVE_HARDCLOCK
static int hardclock_init = 0;
static struct timeval tv_init;
static unsigned long mbedtls_timing_hardclock( void )
{
struct timeval tv_cur;
if( hardclock_init == 0 )
{
gettimeofday( &tv_init, NULL );
hardclock_init = 1;
}
gettimeofday( &tv_cur, NULL );
return( ( tv_cur.tv_sec - tv_init.tv_sec ) * 1000000
+ ( tv_cur.tv_usec - tv_init.tv_usec ) );
}
#endif /* !HAVE_HARDCLOCK */
volatile int mbedtls_timing_alarmed = 0;
#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
/* It's OK to use a global because alarm() is supposed to be global anyway */
static DWORD alarmMs;
static void TimerProc( void *TimerContext )
{
(void) TimerContext;
Sleep( alarmMs );
mbedtls_timing_alarmed = 1;
/* _endthread will be called implicitly on return
* That ensures execution of thread funcition's epilogue */
}
static void mbedtls_set_alarm( int seconds )
{
if( seconds == 0 )
{
/* No need to create a thread for this simple case.
* Also, this shorcut is more reliable at least on MinGW32 */
mbedtls_timing_alarmed = 1;
return;
}
mbedtls_timing_alarmed = 0;
alarmMs = seconds * 1000;
(void) _beginthread( TimerProc, 0, NULL );
}
#else /* _WIN32 && !EFIX64 && !EFI32 */
static void sighandler( int signum )
{
mbedtls_timing_alarmed = 1;
signal( signum, sighandler );
}
static void mbedtls_set_alarm( int seconds )
{
mbedtls_timing_alarmed = 0;
signal( SIGALRM, sighandler );
alarm( seconds );
if( seconds == 0 )
{
/* alarm(0) cancelled any previous pending alarm, but the
handler won't fire, so raise the flag straight away. */
mbedtls_timing_alarmed = 1;
}
}
#endif /* _WIN32 && !EFIX64 && !EFI32 */
static int myrand( void *rng_state, unsigned char *output, size_t len )
{
size_t use_len;
int rnd;
if( rng_state != NULL )
rng_state = NULL;
while( len > 0 )
{
use_len = len;
if( use_len > sizeof(int) )
use_len = sizeof(int);
rnd = rand();
memcpy( output, &rnd, use_len );
output += use_len;
len -= use_len;
}
return( 0 );
}
#define CHECK_AND_CONTINUE( R ) \
{ \
int CHECK_AND_CONTINUE_ret = ( R ); \
if( CHECK_AND_CONTINUE_ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED ) { \
mbedtls_printf( "Feature not supported. Skipping.\n" ); \
continue; \
} \
else if( CHECK_AND_CONTINUE_ret != 0 ) { \
mbedtls_exit( 1 ); \
} \
}
/*
* Clear some memory that was used to prepare the context
*/
#if defined(MBEDTLS_ECP_C)
void ecp_clear_precomputed( mbedtls_ecp_group *grp )
{
if( grp->T != NULL
#if MBEDTLS_ECP_FIXED_POINT_OPTIM == 1
&& grp->T_size != 0
#endif
)
{
size_t i;
for( i = 0; i < grp->T_size; i++ )
mbedtls_ecp_point_free( &grp->T[i] );
mbedtls_free( grp->T );
}
grp->T = NULL;
grp->T_size = 0;
}
#else
#define ecp_clear_precomputed( g )
#endif
#if defined(MBEDTLS_ECP_C)
static int set_ecp_curve( const char *string, mbedtls_ecp_curve_info *curve )
{
const mbedtls_ecp_curve_info *found =
mbedtls_ecp_curve_info_from_name( string );
if( found != NULL )
{
*curve = *found;
return( 1 );
}
else
return( 0 );
}
#endif
unsigned char buf[BUFSIZE];
typedef struct {
char md5, ripemd160, sha1, sha256, sha512,
des3, des,
aes_cbc, aes_gcm, aes_ccm, aes_xts, chachapoly,
aes_cmac, des3_cmac,
aria, camellia, chacha20,
poly1305,
ctr_drbg, hmac_drbg,
rsa, dhm, ecdsa, ecdh;
} todo_list;
int main( int argc, char *argv[] )
{
int i;
unsigned char tmp[200];
char title[TITLE_LEN];
todo_list todo;
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
unsigned char alloc_buf[HEAP_SIZE] = { 0 };
#endif
#if defined(MBEDTLS_ECP_C)
mbedtls_ecp_curve_info single_curve[2] = {
{ MBEDTLS_ECP_DP_NONE, 0, 0, NULL },
{ MBEDTLS_ECP_DP_NONE, 0, 0, NULL },
};
const mbedtls_ecp_curve_info *curve_list = mbedtls_ecp_curve_list( );
#endif
#if defined(MBEDTLS_ECP_C)
(void) curve_list; /* Unused in some configurations where no benchmark uses ECC */
#endif
if( argc <= 1 )
{
memset( &todo, 1, sizeof( todo ) );
}
else
{
memset( &todo, 0, sizeof( todo ) );
for( i = 1; i < argc; i++ )
{
if( strcmp( argv[i], "md5" ) == 0 )
todo.md5 = 1;
else if( strcmp( argv[i], "ripemd160" ) == 0 )
todo.ripemd160 = 1;
else if( strcmp( argv[i], "sha1" ) == 0 )
todo.sha1 = 1;
else if( strcmp( argv[i], "sha256" ) == 0 )
todo.sha256 = 1;
else if( strcmp( argv[i], "sha512" ) == 0 )
todo.sha512 = 1;
else if( strcmp( argv[i], "des3" ) == 0 )
todo.des3 = 1;
else if( strcmp( argv[i], "des" ) == 0 )
todo.des = 1;
else if( strcmp( argv[i], "aes_cbc" ) == 0 )
todo.aes_cbc = 1;
else if( strcmp( argv[i], "aes_xts" ) == 0 )
todo.aes_xts = 1;
else if( strcmp( argv[i], "aes_gcm" ) == 0 )
todo.aes_gcm = 1;
else if( strcmp( argv[i], "aes_ccm" ) == 0 )
todo.aes_ccm = 1;
else if( strcmp( argv[i], "chachapoly" ) == 0 )
todo.chachapoly = 1;
else if( strcmp( argv[i], "aes_cmac" ) == 0 )
todo.aes_cmac = 1;
else if( strcmp( argv[i], "des3_cmac" ) == 0 )
todo.des3_cmac = 1;
else if( strcmp( argv[i], "aria" ) == 0 )
todo.aria = 1;
else if( strcmp( argv[i], "camellia" ) == 0 )
todo.camellia = 1;
else if( strcmp( argv[i], "chacha20" ) == 0 )
todo.chacha20 = 1;
else if( strcmp( argv[i], "poly1305" ) == 0 )
todo.poly1305 = 1;
else if( strcmp( argv[i], "ctr_drbg" ) == 0 )
todo.ctr_drbg = 1;
else if( strcmp( argv[i], "hmac_drbg" ) == 0 )
todo.hmac_drbg = 1;
else if( strcmp( argv[i], "rsa" ) == 0 )
todo.rsa = 1;
else if( strcmp( argv[i], "dhm" ) == 0 )
todo.dhm = 1;
else if( strcmp( argv[i], "ecdsa" ) == 0 )
todo.ecdsa = 1;
else if( strcmp( argv[i], "ecdh" ) == 0 )
todo.ecdh = 1;
#if defined(MBEDTLS_ECP_C)
else if( set_ecp_curve( argv[i], single_curve ) )
curve_list = single_curve;
#endif
else
{
mbedtls_printf( "Unrecognized option: %s\n", argv[i] );
mbedtls_printf( "Available options: " OPTIONS );
}
}
}
mbedtls_printf( "\n" );
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof( alloc_buf ) );
#endif
memset( buf, 0xAA, sizeof( buf ) );
memset( tmp, 0xBB, sizeof( tmp ) );
#if defined(MBEDTLS_MD5_C)
if( todo.md5 )
TIME_AND_TSC( "MD5", mbedtls_md5( buf, BUFSIZE, tmp ) );
#endif
#if defined(MBEDTLS_RIPEMD160_C)
if( todo.ripemd160 )
TIME_AND_TSC( "RIPEMD160", mbedtls_ripemd160( buf, BUFSIZE, tmp ) );
#endif
#if defined(MBEDTLS_SHA1_C)
if( todo.sha1 )
TIME_AND_TSC( "SHA-1", mbedtls_sha1( buf, BUFSIZE, tmp ) );
#endif
#if defined(MBEDTLS_SHA256_C)
if( todo.sha256 )
TIME_AND_TSC( "SHA-256", mbedtls_sha256( buf, BUFSIZE, tmp, 0 ) );
#endif
#if defined(MBEDTLS_SHA512_C)
if( todo.sha512 )
TIME_AND_TSC( "SHA-512", mbedtls_sha512( buf, BUFSIZE, tmp, 0 ) );
#endif
#if defined(MBEDTLS_DES_C)
#if defined(MBEDTLS_CIPHER_MODE_CBC)
if( todo.des3 )
{
mbedtls_des3_context des3;
mbedtls_des3_init( &des3 );
if( mbedtls_des3_set3key_enc( &des3, tmp ) != 0 )
mbedtls_exit( 1 );
TIME_AND_TSC( "3DES",
mbedtls_des3_crypt_cbc( &des3, MBEDTLS_DES_ENCRYPT, BUFSIZE, tmp, buf, buf ) );
mbedtls_des3_free( &des3 );
}
if( todo.des )
{
mbedtls_des_context des;
mbedtls_des_init( &des );
if( mbedtls_des_setkey_enc( &des, tmp ) != 0 )
mbedtls_exit( 1 );
TIME_AND_TSC( "DES",
mbedtls_des_crypt_cbc( &des, MBEDTLS_DES_ENCRYPT, BUFSIZE, tmp, buf, buf ) );
mbedtls_des_free( &des );
}
#endif /* MBEDTLS_CIPHER_MODE_CBC */
#if defined(MBEDTLS_CMAC_C)
if( todo.des3_cmac )
{
unsigned char output[8];
const mbedtls_cipher_info_t *cipher_info;
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_DES_EDE3_ECB );
TIME_AND_TSC( "3DES-CMAC",
mbedtls_cipher_cmac( cipher_info, tmp, 192, buf,
BUFSIZE, output ) );
}
#endif /* MBEDTLS_CMAC_C */
#endif /* MBEDTLS_DES_C */
#if defined(MBEDTLS_AES_C)
#if defined(MBEDTLS_CIPHER_MODE_CBC)
if( todo.aes_cbc )
{
int keysize;
mbedtls_aes_context aes;
mbedtls_aes_init( &aes );
for( keysize = 128; keysize <= 256; keysize += 64 )
{
mbedtls_snprintf( title, sizeof( title ), "AES-CBC-%d", keysize );
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
CHECK_AND_CONTINUE( mbedtls_aes_setkey_enc( &aes, tmp, keysize ) );
TIME_AND_TSC( title,
mbedtls_aes_crypt_cbc( &aes, MBEDTLS_AES_ENCRYPT, BUFSIZE, tmp, buf, buf ) );
}
mbedtls_aes_free( &aes );
}
#endif
#if defined(MBEDTLS_CIPHER_MODE_XTS)
if( todo.aes_xts )
{
int keysize;
mbedtls_aes_xts_context ctx;
mbedtls_aes_xts_init( &ctx );
for( keysize = 128; keysize <= 256; keysize += 128 )
{
mbedtls_snprintf( title, sizeof( title ), "AES-XTS-%d", keysize );
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
CHECK_AND_CONTINUE( mbedtls_aes_xts_setkey_enc( &ctx, tmp, keysize * 2 ) );
TIME_AND_TSC( title,
mbedtls_aes_crypt_xts( &ctx, MBEDTLS_AES_ENCRYPT, BUFSIZE,
tmp, buf, buf ) );
mbedtls_aes_xts_free( &ctx );
}
}
#endif
#if defined(MBEDTLS_GCM_C)
if( todo.aes_gcm )
{
int keysize;
mbedtls_gcm_context gcm;
mbedtls_gcm_init( &gcm );
for( keysize = 128; keysize <= 256; keysize += 64 )
{
mbedtls_snprintf( title, sizeof( title ), "AES-GCM-%d", keysize );
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
mbedtls_gcm_setkey( &gcm, MBEDTLS_CIPHER_ID_AES, tmp, keysize );
TIME_AND_TSC( title,
mbedtls_gcm_crypt_and_tag( &gcm, MBEDTLS_GCM_ENCRYPT, BUFSIZE, tmp,
12, NULL, 0, buf, buf, 16, tmp ) );
mbedtls_gcm_free( &gcm );
}
}
#endif
#if defined(MBEDTLS_CCM_C)
if( todo.aes_ccm )
{
int keysize;
mbedtls_ccm_context ccm;
mbedtls_ccm_init( &ccm );
for( keysize = 128; keysize <= 256; keysize += 64 )
{
mbedtls_snprintf( title, sizeof( title ), "AES-CCM-%d", keysize );
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
mbedtls_ccm_setkey( &ccm, MBEDTLS_CIPHER_ID_AES, tmp, keysize );
TIME_AND_TSC( title,
mbedtls_ccm_encrypt_and_tag( &ccm, BUFSIZE, tmp,
12, NULL, 0, buf, buf, tmp, 16 ) );
mbedtls_ccm_free( &ccm );
}
}
#endif
#if defined(MBEDTLS_CHACHAPOLY_C)
if( todo.chachapoly )
{
mbedtls_chachapoly_context chachapoly;
mbedtls_chachapoly_init( &chachapoly );
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
mbedtls_snprintf( title, sizeof( title ), "ChaCha20-Poly1305" );
mbedtls_chachapoly_setkey( &chachapoly, tmp );
TIME_AND_TSC( title,
mbedtls_chachapoly_encrypt_and_tag( &chachapoly,
BUFSIZE, tmp, NULL, 0, buf, buf, tmp ) );
mbedtls_chachapoly_free( &chachapoly );
}
#endif
#if defined(MBEDTLS_CMAC_C)
if( todo.aes_cmac )
{
unsigned char output[16];
const mbedtls_cipher_info_t *cipher_info;
mbedtls_cipher_type_t cipher_type;
int keysize;
for( keysize = 128, cipher_type = MBEDTLS_CIPHER_AES_128_ECB;
keysize <= 256;
keysize += 64, cipher_type++ )
{
mbedtls_snprintf( title, sizeof( title ), "AES-CMAC-%d", keysize );
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
cipher_info = mbedtls_cipher_info_from_type( cipher_type );
TIME_AND_TSC( title,
mbedtls_cipher_cmac( cipher_info, tmp, keysize,
buf, BUFSIZE, output ) );
}
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
TIME_AND_TSC( "AES-CMAC-PRF-128",
mbedtls_aes_cmac_prf_128( tmp, 16, buf, BUFSIZE,
output ) );
}
#endif /* MBEDTLS_CMAC_C */
#endif /* MBEDTLS_AES_C */
#if defined(MBEDTLS_ARIA_C) && defined(MBEDTLS_CIPHER_MODE_CBC)
if( todo.aria )
{
int keysize;
mbedtls_aria_context aria;
mbedtls_aria_init( &aria );
for( keysize = 128; keysize <= 256; keysize += 64 )
{
mbedtls_snprintf( title, sizeof( title ), "ARIA-CBC-%d", keysize );
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
mbedtls_aria_setkey_enc( &aria, tmp, keysize );
TIME_AND_TSC( title,
mbedtls_aria_crypt_cbc( &aria, MBEDTLS_ARIA_ENCRYPT,
BUFSIZE, tmp, buf, buf ) );
}
mbedtls_aria_free( &aria );
}
#endif
#if defined(MBEDTLS_CAMELLIA_C) && defined(MBEDTLS_CIPHER_MODE_CBC)
if( todo.camellia )
{
int keysize;
mbedtls_camellia_context camellia;
mbedtls_camellia_init( &camellia );
for( keysize = 128; keysize <= 256; keysize += 64 )
{
mbedtls_snprintf( title, sizeof( title ), "CAMELLIA-CBC-%d", keysize );
memset( buf, 0, sizeof( buf ) );
memset( tmp, 0, sizeof( tmp ) );
mbedtls_camellia_setkey_enc( &camellia, tmp, keysize );
TIME_AND_TSC( title,
mbedtls_camellia_crypt_cbc( &camellia, MBEDTLS_CAMELLIA_ENCRYPT,
BUFSIZE, tmp, buf, buf ) );
}
mbedtls_camellia_free( &camellia );
}
#endif
#if defined(MBEDTLS_CHACHA20_C)
if ( todo.chacha20 )
{
TIME_AND_TSC( "ChaCha20", mbedtls_chacha20_crypt( buf, buf, 0U, BUFSIZE, buf, buf ) );
}
#endif
#if defined(MBEDTLS_POLY1305_C)
if ( todo.poly1305 )
{
TIME_AND_TSC( "Poly1305", mbedtls_poly1305_mac( buf, buf, BUFSIZE, buf ) );
}
#endif
#if defined(MBEDTLS_CTR_DRBG_C)
if( todo.ctr_drbg )
{
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_ctr_drbg_init( &ctr_drbg );
if( mbedtls_ctr_drbg_seed( &ctr_drbg, myrand, NULL, NULL, 0 ) != 0 )
mbedtls_exit(1);
TIME_AND_TSC( "CTR_DRBG (NOPR)",
mbedtls_ctr_drbg_random( &ctr_drbg, buf, BUFSIZE ) );
mbedtls_ctr_drbg_free( &ctr_drbg );
mbedtls_ctr_drbg_init( &ctr_drbg );
if( mbedtls_ctr_drbg_seed( &ctr_drbg, myrand, NULL, NULL, 0 ) != 0 )
mbedtls_exit(1);
mbedtls_ctr_drbg_set_prediction_resistance( &ctr_drbg, MBEDTLS_CTR_DRBG_PR_ON );
TIME_AND_TSC( "CTR_DRBG (PR)",
mbedtls_ctr_drbg_random( &ctr_drbg, buf, BUFSIZE ) );
mbedtls_ctr_drbg_free( &ctr_drbg );
}
#endif
#if defined(MBEDTLS_HMAC_DRBG_C)
if( todo.hmac_drbg )
{
mbedtls_hmac_drbg_context hmac_drbg;
const mbedtls_md_info_t *md_info;
mbedtls_hmac_drbg_init( &hmac_drbg );
#if defined(MBEDTLS_SHA1_C)
if( ( md_info = mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 ) ) == NULL )
mbedtls_exit(1);
if( mbedtls_hmac_drbg_seed( &hmac_drbg, md_info, myrand, NULL, NULL, 0 ) != 0 )
mbedtls_exit(1);
TIME_AND_TSC( "HMAC_DRBG SHA-1 (NOPR)",
mbedtls_hmac_drbg_random( &hmac_drbg, buf, BUFSIZE ) );
if( mbedtls_hmac_drbg_seed( &hmac_drbg, md_info, myrand, NULL, NULL, 0 ) != 0 )
mbedtls_exit(1);
mbedtls_hmac_drbg_set_prediction_resistance( &hmac_drbg,
MBEDTLS_HMAC_DRBG_PR_ON );
TIME_AND_TSC( "HMAC_DRBG SHA-1 (PR)",
mbedtls_hmac_drbg_random( &hmac_drbg, buf, BUFSIZE ) );
#endif
#if defined(MBEDTLS_SHA256_C)
if( ( md_info = mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 ) ) == NULL )
mbedtls_exit(1);
if( mbedtls_hmac_drbg_seed( &hmac_drbg, md_info, myrand, NULL, NULL, 0 ) != 0 )
mbedtls_exit(1);
TIME_AND_TSC( "HMAC_DRBG SHA-256 (NOPR)",
mbedtls_hmac_drbg_random( &hmac_drbg, buf, BUFSIZE ) );
if( mbedtls_hmac_drbg_seed( &hmac_drbg, md_info, myrand, NULL, NULL, 0 ) != 0 )
mbedtls_exit(1);
mbedtls_hmac_drbg_set_prediction_resistance( &hmac_drbg,
MBEDTLS_HMAC_DRBG_PR_ON );
TIME_AND_TSC( "HMAC_DRBG SHA-256 (PR)",
mbedtls_hmac_drbg_random( &hmac_drbg, buf, BUFSIZE ) );
#endif
mbedtls_hmac_drbg_free( &hmac_drbg );
}
#endif
#if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_GENPRIME)
if( todo.rsa )
{
int keysize;
mbedtls_rsa_context rsa;
for( keysize = 2048; keysize <= 4096; keysize *= 2 )
{
mbedtls_snprintf( title, sizeof( title ), "RSA-%d", keysize );
mbedtls_rsa_init( &rsa );
mbedtls_rsa_gen_key( &rsa, myrand, NULL, keysize, 65537 );
TIME_PUBLIC( title, " public",
buf[0] = 0;
ret = mbedtls_rsa_public( &rsa, buf, buf ) );
TIME_PUBLIC( title, "private",
buf[0] = 0;
ret = mbedtls_rsa_private( &rsa, myrand, NULL, buf, buf ) );
mbedtls_rsa_free( &rsa );
}
}
#endif
#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_BIGNUM_C)
if( todo.dhm )
{
int dhm_sizes[] = { 2048, 3072 };
static const unsigned char dhm_P_2048[] =
MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN;
static const unsigned char dhm_P_3072[] =
MBEDTLS_DHM_RFC3526_MODP_3072_P_BIN;
static const unsigned char dhm_G_2048[] =
MBEDTLS_DHM_RFC3526_MODP_2048_G_BIN;
static const unsigned char dhm_G_3072[] =
MBEDTLS_DHM_RFC3526_MODP_3072_G_BIN;
const unsigned char *dhm_P[] = { dhm_P_2048, dhm_P_3072 };
const size_t dhm_P_size[] = { sizeof( dhm_P_2048 ),
sizeof( dhm_P_3072 ) };
const unsigned char *dhm_G[] = { dhm_G_2048, dhm_G_3072 };
const size_t dhm_G_size[] = { sizeof( dhm_G_2048 ),
sizeof( dhm_G_3072 ) };
mbedtls_dhm_context dhm;
size_t olen;
size_t n;
for( i = 0; (size_t) i < sizeof( dhm_sizes ) / sizeof( dhm_sizes[0] ); i++ )
{
mbedtls_dhm_init( &dhm );
if( mbedtls_mpi_read_binary( &dhm.P, dhm_P[i],
dhm_P_size[i] ) != 0 ||
mbedtls_mpi_read_binary( &dhm.G, dhm_G[i],
dhm_G_size[i] ) != 0 )
{
mbedtls_exit( 1 );
}
n = mbedtls_mpi_size( &dhm.P );
mbedtls_dhm_make_public( &dhm, (int) n, buf, n, myrand, NULL );
if( mbedtls_mpi_copy( &dhm.GY, &dhm.GX ) != 0 )
mbedtls_exit( 1 );
mbedtls_snprintf( title, sizeof( title ), "DHE-%d", dhm_sizes[i] );
TIME_PUBLIC( title, "handshake",
ret |= mbedtls_dhm_make_public( &dhm, (int) n, buf, n,
myrand, NULL );
ret |= mbedtls_dhm_calc_secret( &dhm, buf, sizeof( buf ), &olen, myrand, NULL ) );
mbedtls_snprintf( title, sizeof( title ), "DH-%d", dhm_sizes[i] );
TIME_PUBLIC( title, "handshake",
ret |= mbedtls_dhm_calc_secret( &dhm, buf, sizeof( buf ), &olen, myrand, NULL ) );
mbedtls_dhm_free( &dhm );
}
}
#endif
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_SHA256_C)
if( todo.ecdsa )
{
mbedtls_ecdsa_context ecdsa;
const mbedtls_ecp_curve_info *curve_info;
size_t sig_len;
memset( buf, 0x2A, sizeof( buf ) );
for( curve_info = curve_list;
curve_info->grp_id != MBEDTLS_ECP_DP_NONE;
curve_info++ )
{
if( ! mbedtls_ecdsa_can_do( curve_info->grp_id ) )
continue;
mbedtls_ecdsa_init( &ecdsa );
if( mbedtls_ecdsa_genkey( &ecdsa, curve_info->grp_id, myrand, NULL ) != 0 )
mbedtls_exit( 1 );
ecp_clear_precomputed( &ecdsa.grp );
mbedtls_snprintf( title, sizeof( title ), "ECDSA-%s",
curve_info->name );
TIME_PUBLIC( title, "sign",
ret = mbedtls_ecdsa_write_signature( &ecdsa, MBEDTLS_MD_SHA256, buf, curve_info->bit_size,
tmp, sizeof( tmp ), &sig_len, myrand, NULL ) );
mbedtls_ecdsa_free( &ecdsa );
}
for( curve_info = curve_list;
curve_info->grp_id != MBEDTLS_ECP_DP_NONE;
curve_info++ )
{
if( ! mbedtls_ecdsa_can_do( curve_info->grp_id ) )
continue;
mbedtls_ecdsa_init( &ecdsa );
if( mbedtls_ecdsa_genkey( &ecdsa, curve_info->grp_id, myrand, NULL ) != 0 ||
mbedtls_ecdsa_write_signature( &ecdsa, MBEDTLS_MD_SHA256, buf, curve_info->bit_size,
tmp, sizeof( tmp ), &sig_len, myrand, NULL ) != 0 )
{
mbedtls_exit( 1 );
}
ecp_clear_precomputed( &ecdsa.grp );
mbedtls_snprintf( title, sizeof( title ), "ECDSA-%s",
curve_info->name );
TIME_PUBLIC( title, "verify",
ret = mbedtls_ecdsa_read_signature( &ecdsa, buf, curve_info->bit_size,
tmp, sig_len ) );
mbedtls_ecdsa_free( &ecdsa );
}
}
#endif
#if defined(MBEDTLS_ECDH_C) && defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
if( todo.ecdh )
{
mbedtls_ecdh_context ecdh;
mbedtls_mpi z;
const mbedtls_ecp_curve_info montgomery_curve_list[] = {
#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
{ MBEDTLS_ECP_DP_CURVE25519, 0, 0, "Curve25519" },
#endif
#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
{ MBEDTLS_ECP_DP_CURVE448, 0, 0, "Curve448" },
#endif
{ MBEDTLS_ECP_DP_NONE, 0, 0, 0 }
};
const mbedtls_ecp_curve_info *curve_info;
size_t olen;
const mbedtls_ecp_curve_info *selected_montgomery_curve_list =
montgomery_curve_list;
if( curve_list == (const mbedtls_ecp_curve_info*) &single_curve )
{
mbedtls_ecp_group grp;
mbedtls_ecp_group_init( &grp );
if( mbedtls_ecp_group_load( &grp, curve_list->grp_id ) != 0 )
mbedtls_exit( 1 );
if( mbedtls_ecp_get_type( &grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
selected_montgomery_curve_list = single_curve;
else /* empty list */
selected_montgomery_curve_list = single_curve + 1;
mbedtls_ecp_group_free( &grp );
}
for( curve_info = curve_list;
curve_info->grp_id != MBEDTLS_ECP_DP_NONE;
curve_info++ )
{
if( ! mbedtls_ecdh_can_do( curve_info->grp_id ) )
continue;
mbedtls_ecdh_init( &ecdh );
CHECK_AND_CONTINUE( mbedtls_ecp_group_load( &ecdh.grp, curve_info->grp_id ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_make_public( &ecdh, &olen, buf, sizeof( buf),
myrand, NULL ) );
CHECK_AND_CONTINUE( mbedtls_ecp_copy( &ecdh.Qp, &ecdh.Q ) );
ecp_clear_precomputed( &ecdh.grp );
mbedtls_snprintf( title, sizeof( title ), "ECDHE-%s",
curve_info->name );
TIME_PUBLIC( title, "handshake",
CHECK_AND_CONTINUE( mbedtls_ecdh_make_public( &ecdh, &olen, buf, sizeof( buf),
myrand, NULL ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_calc_secret( &ecdh, &olen, buf, sizeof( buf ),
myrand, NULL ) ) );
mbedtls_ecdh_free( &ecdh );
}
/* Montgomery curves need to be handled separately */
for ( curve_info = selected_montgomery_curve_list;
curve_info->grp_id != MBEDTLS_ECP_DP_NONE;
curve_info++ )
{
mbedtls_ecdh_init( &ecdh );
mbedtls_mpi_init( &z );
CHECK_AND_CONTINUE( mbedtls_ecp_group_load( &ecdh.grp, curve_info->grp_id ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_gen_public( &ecdh.grp, &ecdh.d, &ecdh.Qp, myrand, NULL ) );
mbedtls_snprintf( title, sizeof(title), "ECDHE-%s",
curve_info->name );
TIME_PUBLIC( title, "handshake",
CHECK_AND_CONTINUE( mbedtls_ecdh_gen_public( &ecdh.grp, &ecdh.d, &ecdh.Q,
myrand, NULL ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_compute_shared( &ecdh.grp, &z, &ecdh.Qp, &ecdh.d,
myrand, NULL ) ) );
mbedtls_ecdh_free( &ecdh );
mbedtls_mpi_free( &z );
}
for( curve_info = curve_list;
curve_info->grp_id != MBEDTLS_ECP_DP_NONE;
curve_info++ )
{
if( ! mbedtls_ecdh_can_do( curve_info->grp_id ) )
continue;
mbedtls_ecdh_init( &ecdh );
CHECK_AND_CONTINUE( mbedtls_ecp_group_load( &ecdh.grp, curve_info->grp_id ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_make_public( &ecdh, &olen, buf, sizeof( buf),
myrand, NULL ) );
CHECK_AND_CONTINUE( mbedtls_ecp_copy( &ecdh.Qp, &ecdh.Q ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_make_public( &ecdh, &olen, buf, sizeof( buf),
myrand, NULL ) );
ecp_clear_precomputed( &ecdh.grp );
mbedtls_snprintf( title, sizeof( title ), "ECDH-%s",
curve_info->name );
TIME_PUBLIC( title, "handshake",
CHECK_AND_CONTINUE( mbedtls_ecdh_calc_secret( &ecdh, &olen, buf, sizeof( buf ),
myrand, NULL ) ) );
mbedtls_ecdh_free( &ecdh );
}
/* Montgomery curves need to be handled separately */
for ( curve_info = selected_montgomery_curve_list;
curve_info->grp_id != MBEDTLS_ECP_DP_NONE;
curve_info++)
{
mbedtls_ecdh_init( &ecdh );
mbedtls_mpi_init( &z );
CHECK_AND_CONTINUE( mbedtls_ecp_group_load( &ecdh.grp, curve_info->grp_id ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_gen_public( &ecdh.grp, &ecdh.d, &ecdh.Qp,
myrand, NULL ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_gen_public( &ecdh.grp, &ecdh.d, &ecdh.Q, myrand, NULL ) );
mbedtls_snprintf( title, sizeof(title), "ECDH-%s",
curve_info->name );
TIME_PUBLIC( title, "handshake",
CHECK_AND_CONTINUE( mbedtls_ecdh_compute_shared( &ecdh.grp, &z, &ecdh.Qp, &ecdh.d,
myrand, NULL ) ) );
mbedtls_ecdh_free( &ecdh );
mbedtls_mpi_free( &z );
}
}
#endif
#if defined(MBEDTLS_ECDH_C)
if( todo.ecdh )
{
mbedtls_ecdh_context ecdh_srv, ecdh_cli;
unsigned char buf_srv[BUFSIZE], buf_cli[BUFSIZE];
const mbedtls_ecp_curve_info *curve_info;
size_t olen;
for( curve_info = curve_list;
curve_info->grp_id != MBEDTLS_ECP_DP_NONE;
curve_info++ )
{
if( ! mbedtls_ecdh_can_do( curve_info->grp_id ) )
continue;
mbedtls_ecdh_init( &ecdh_srv );
mbedtls_ecdh_init( &ecdh_cli );
mbedtls_snprintf( title, sizeof( title ), "ECDHE-%s", curve_info->name );
TIME_PUBLIC( title, "full handshake",
const unsigned char * p_srv = buf_srv;
CHECK_AND_CONTINUE( mbedtls_ecdh_setup( &ecdh_srv, curve_info->grp_id ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_make_params( &ecdh_srv, &olen, buf_srv, sizeof( buf_srv ), myrand, NULL ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_read_params( &ecdh_cli, &p_srv, p_srv + olen ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_make_public( &ecdh_cli, &olen, buf_cli, sizeof( buf_cli ), myrand, NULL ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_read_public( &ecdh_srv, buf_cli, olen ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_calc_secret( &ecdh_srv, &olen, buf_srv, sizeof( buf_srv ), myrand, NULL ) );
CHECK_AND_CONTINUE( mbedtls_ecdh_calc_secret( &ecdh_cli, &olen, buf_cli, sizeof( buf_cli ), myrand, NULL ) );
mbedtls_ecdh_free( &ecdh_cli );
mbedtls_ecdh_free( &ecdh_srv );
);
}
}
#endif
mbedtls_printf( "\n" );
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
mbedtls_memory_buffer_alloc_free();
#endif
#if defined(_WIN32)
mbedtls_printf( " Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
mbedtls_exit( 0 );
}
#endif /* MBEDTLS_TIMING_C */
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