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mbedtls/tests/suites/test_suite_ecdh.function
Manuel Pégourié-Gonnard 125af948c3 Merge branch 'development-restricted' into iotssl-1260-non-blocking-ecc-restricted 
* development-restricted: (578 commits)
  Update library version number to 2.13.1
  Don't define _POSIX_C_SOURCE in header file
  Don't declare and define gmtime()-mutex on Windows platforms
  Correct preprocessor guards determining use of gmtime()
  Correct documentation of mbedtls_platform_gmtime_r()
  Correct typo in documentation of mbedtls_platform_gmtime_r()
  Correct POSIX version check to determine presence of gmtime_r()
  Improve documentation of mbedtls_platform_gmtime_r()
  platform_utils.{c/h} -> platform_util.{c/h}
  Don't include platform_time.h if !MBEDTLS_HAVE_TIME
  Improve wording of documentation of MBEDTLS_PLATFORM_GMTIME_R_ALT
  Fix typo in documentation of MBEDTLS_PLATFORM_GMTIME_R_ALT
  Replace 'thread safe' by 'thread-safe' in the documentation
  Improve documentation of MBEDTLS_HAVE_TIME_DATE
  ChangeLog: Add missing renamings gmtime -> gmtime_r
  Improve documentation of MBEDTLS_HAVE_TIME_DATE
  Minor documentation improvements
  Style: Add missing period in documentation in threading.h
  Rename mbedtls_platform_gmtime() to mbedtls_platform_gmtime_r()
  Guard decl and use of gmtime mutex by HAVE_TIME_DATE and !GMTIME_ALT
  ...
2018-09-11 12:39:14 +02:00

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/* BEGIN_HEADER */
#include "mbedtls/ecdh.h"
/* END_HEADER */
/* BEGIN_DEPENDENCIES
* depends_on:MBEDTLS_ECDH_C
* END_DEPENDENCIES
*/
/* BEGIN_CASE */
void ecdh_primitive_random( int id )
{
mbedtls_ecp_group grp;
mbedtls_ecp_point qA, qB;
mbedtls_mpi dA, dB, zA, zB;
rnd_pseudo_info rnd_info;
mbedtls_ecp_group_init( &grp );
mbedtls_ecp_point_init( &qA ); mbedtls_ecp_point_init( &qB );
mbedtls_mpi_init( &dA ); mbedtls_mpi_init( &dB );
mbedtls_mpi_init( &zA ); mbedtls_mpi_init( &zB );
memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dA, &qA, &rnd_pseudo_rand, &rnd_info )
== 0 );
TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB, &rnd_pseudo_rand, &rnd_info )
== 0 );
TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA,
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB,
NULL, NULL ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &zB ) == 0 );
exit:
mbedtls_ecp_group_free( &grp );
mbedtls_ecp_point_free( &qA ); mbedtls_ecp_point_free( &qB );
mbedtls_mpi_free( &dA ); mbedtls_mpi_free( &dB );
mbedtls_mpi_free( &zA ); mbedtls_mpi_free( &zB );
}
/* END_CASE */
/* BEGIN_CASE */
void ecdh_primitive_testvec( int id, data_t * rnd_buf_A, char * xA_str,
char * yA_str, data_t * rnd_buf_B,
char * xB_str, char * yB_str, char * z_str )
{
mbedtls_ecp_group grp;
mbedtls_ecp_point qA, qB;
mbedtls_mpi dA, dB, zA, zB, check;
rnd_buf_info rnd_info_A, rnd_info_B;
mbedtls_ecp_group_init( &grp );
mbedtls_ecp_point_init( &qA ); mbedtls_ecp_point_init( &qB );
mbedtls_mpi_init( &dA ); mbedtls_mpi_init( &dB );
mbedtls_mpi_init( &zA ); mbedtls_mpi_init( &zB ); mbedtls_mpi_init( &check );
TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
rnd_info_A.buf = rnd_buf_A->x;
rnd_info_A.length = rnd_buf_A->len;
/* Fix rnd_buf_A->x by shifting it left if necessary */
if( grp.nbits % 8 != 0 )
{
unsigned char shift = 8 - ( grp.nbits % 8 );
size_t i;
for( i = 0; i < rnd_info_A.length - 1; i++ )
rnd_buf_A->x[i] = rnd_buf_A->x[i] << shift
| rnd_buf_A->x[i+1] >> ( 8 - shift );
rnd_buf_A->x[rnd_info_A.length-1] <<= shift;
}
rnd_info_B.buf = rnd_buf_B->x;
rnd_info_B.length = rnd_buf_B->len;
/* Fix rnd_buf_B->x by shifting it left if necessary */
if( grp.nbits % 8 != 0 )
{
unsigned char shift = 8 - ( grp.nbits % 8 );
size_t i;
for( i = 0; i < rnd_info_B.length - 1; i++ )
rnd_buf_B->x[i] = rnd_buf_B->x[i] << shift
| rnd_buf_B->x[i+1] >> ( 8 - shift );
rnd_buf_B->x[rnd_info_B.length-1] <<= shift;
}
TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dA, &qA,
rnd_buffer_rand, &rnd_info_A ) == 0 );
TEST_ASSERT( ! mbedtls_ecp_is_zero( &qA ) );
TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xA_str ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.X, &check ) == 0 );
TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yA_str ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.Y, &check ) == 0 );
TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB,
rnd_buffer_rand, &rnd_info_B ) == 0 );
TEST_ASSERT( ! mbedtls_ecp_is_zero( &qB ) );
TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xB_str ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.X, &check ) == 0 );
TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yB_str ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.Y, &check ) == 0 );
TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, z_str ) == 0 );
TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA, NULL, NULL ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &check ) == 0 );
TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB, NULL, NULL ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zB, &check ) == 0 );
exit:
mbedtls_ecp_group_free( &grp );
mbedtls_ecp_point_free( &qA ); mbedtls_ecp_point_free( &qB );
mbedtls_mpi_free( &dA ); mbedtls_mpi_free( &dB );
mbedtls_mpi_free( &zA ); mbedtls_mpi_free( &zB ); mbedtls_mpi_free( &check );
}
/* END_CASE */
/* BEGIN_CASE */
void ecdh_exchange( int id )
{
mbedtls_ecdh_context srv, cli;
unsigned char buf[1000];
const unsigned char *vbuf;
size_t len;
rnd_pseudo_info rnd_info;
mbedtls_ecdh_init( &srv );
mbedtls_ecdh_init( &cli );
memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
TEST_ASSERT( mbedtls_ecp_group_load( &srv.grp, id ) == 0 );
memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
TEST_ASSERT( mbedtls_ecdh_make_params( &srv, &len, buf, 1000,
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
memset( buf, 0x00, sizeof( buf ) );
TEST_ASSERT( mbedtls_ecdh_make_public( &cli, &len, buf, 1000,
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 );
TEST_ASSERT( mbedtls_ecdh_calc_secret( &srv, &len, buf, 1000,
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( mbedtls_ecdh_calc_secret( &cli, &len, buf, 1000, NULL, NULL ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &srv.z, &cli.z ) == 0 );
exit:
mbedtls_ecdh_free( &srv );
mbedtls_ecdh_free( &cli );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_ECP_RESTARTABLE */
void ecdh_restart( int id, char *dA_str, char *dB_str, char *z_str,
int enable, int max_ops, int min_restart, int max_restart )
{
int ret;
mbedtls_ecdh_context srv, cli;
unsigned char buf[1000];
const unsigned char *vbuf;
size_t len;
unsigned char z[MBEDTLS_ECP_MAX_BYTES];
size_t z_len;
unsigned char rnd_buf_A[MBEDTLS_ECP_MAX_BYTES];
unsigned char rnd_buf_B[MBEDTLS_ECP_MAX_BYTES];
rnd_buf_info rnd_info_A, rnd_info_B;
int cnt_restart;
mbedtls_ecdh_init( &srv );
mbedtls_ecdh_init( &cli );
z_len = unhexify( z, z_str );
rnd_info_A.buf = rnd_buf_A;
rnd_info_A.length = unhexify( rnd_buf_A, dA_str );
rnd_info_B.buf = rnd_buf_B;
rnd_info_B.length = unhexify( rnd_buf_B, dB_str );
TEST_ASSERT( mbedtls_ecp_group_load( &srv.grp, id ) == 0 );
/* otherwise we would have to fix the random buffer,
* as in ecdh_primitive_test_vec */
TEST_ASSERT( srv.grp.nbits % 8 == 0 );
/* set up restart parameters */
mbedtls_ecp_set_max_ops( max_ops );
if( enable)
{
mbedtls_ecdh_enable_restart( &srv );
mbedtls_ecdh_enable_restart( &cli );
}
/* server writes its paramaters */
memset( buf, 0x00, sizeof( buf ) );
len = 0;
cnt_restart = 0;
do {
ret = mbedtls_ecdh_make_params( &srv, &len, buf, sizeof( buf ),
rnd_buffer_rand, &rnd_info_A );
} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
TEST_ASSERT( ret == 0 );
TEST_ASSERT( cnt_restart >= min_restart );
TEST_ASSERT( cnt_restart <= max_restart );
/* client read server params */
vbuf = buf;
TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
/* client writes its key share */
memset( buf, 0x00, sizeof( buf ) );
len = 0;
cnt_restart = 0;
do {
ret = mbedtls_ecdh_make_public( &cli, &len, buf, sizeof( buf ),
rnd_buffer_rand, &rnd_info_B );
} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
TEST_ASSERT( ret == 0 );
TEST_ASSERT( cnt_restart >= min_restart );
TEST_ASSERT( cnt_restart <= max_restart );
/* server reads client key share */
TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 );
/* server computes shared secret */
memset( buf, 0, sizeof( buf ) );
len = 0;
cnt_restart = 0;
do {
ret = mbedtls_ecdh_calc_secret( &srv, &len, buf, sizeof( buf ),
NULL, NULL );
} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
TEST_ASSERT( ret == 0 );
TEST_ASSERT( cnt_restart >= min_restart );
TEST_ASSERT( cnt_restart <= max_restart );
TEST_ASSERT( len == z_len );
TEST_ASSERT( memcmp( buf, z, len ) == 0 );
/* client computes shared secret */
memset( buf, 0, sizeof( buf ) );
len = 0;
cnt_restart = 0;
do {
ret = mbedtls_ecdh_calc_secret( &cli, &len, buf, sizeof( buf ),
NULL, NULL );
} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
TEST_ASSERT( ret == 0 );
TEST_ASSERT( cnt_restart >= min_restart );
TEST_ASSERT( cnt_restart <= max_restart );
TEST_ASSERT( len == z_len );
TEST_ASSERT( memcmp( buf, z, len ) == 0 );
exit:
mbedtls_ecdh_free( &srv );
mbedtls_ecdh_free( &cli );
}
/* END_CASE */
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