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Change ecp_mul() prototype to allow randomization

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(Also improve an error code while at it.)
This commit is contained in:
Manuel Pégourié-Gonnard
2013-09-02 14:29:09 +02:00
parent f451bac000
commit e09d2f8261
10 changed files with 99 additions and 37 deletions
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15
tests/suites/test_suite_ecdh.function
View File

@@ -27,8 +27,10 @@ void ecdh_primitive_random( int id )
== 0 );
TEST_ASSERT( ecdh_gen_public( &grp, &dB, &qB, &rnd_pseudo_rand, &rnd_info )
== 0 );
TEST_ASSERT( ecdh_compute_shared( &grp, &zA, &qB, &dA ) == 0 );
TEST_ASSERT( ecdh_compute_shared( &grp, &zB, &qA, &dB ) == 0 );
TEST_ASSERT( ecdh_compute_shared( &grp, &zA, &qB, &dA,
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( ecdh_compute_shared( &grp, &zB, &qA, &dB,
NULL, NULL ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &zA, &zB ) == 0 );
@@ -70,9 +72,9 @@ void ecdh_primitive_testvec( int id, char *dA_str, char *xA_str, char *yA_str,
TEST_ASSERT( mpi_cmp_mpi( &qB.Y, &check ) == 0 );
TEST_ASSERT( mpi_read_string( &check, 16, z_str ) == 0 );
TEST_ASSERT( ecdh_compute_shared( &grp, &zA, &qB, &dA ) == 0 );
TEST_ASSERT( ecdh_compute_shared( &grp, &zA, &qB, &dA, NULL, NULL ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &zA, &check ) == 0 );
TEST_ASSERT( ecdh_compute_shared( &grp, &zB, &qA, &dB ) == 0 );
TEST_ASSERT( ecdh_compute_shared( &grp, &zB, &qA, &dB, NULL, NULL ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &zB, &check ) == 0 );
ecp_group_free( &grp );
@@ -107,8 +109,9 @@ void ecdh_exchange( int id )
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( ecdh_read_public( &srv, buf, len ) == 0 );
TEST_ASSERT( ecdh_calc_secret( &srv, &len, buf, 1000 ) == 0 );
TEST_ASSERT( ecdh_calc_secret( &cli, &len, buf, 1000 ) == 0 );
TEST_ASSERT( ecdh_calc_secret( &srv, &len, buf, 1000,
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( ecdh_calc_secret( &cli, &len, buf, 1000, NULL, NULL ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &srv.z, &cli.z ) == 0 );
ecdh_free( &srv );

4
tests/suites/test_suite_ecp.data
View File

@@ -50,7 +50,7 @@ ECP small subtraction #9
ecp_small_sub:0:"14":"11":0:"14":"36":0:27:30
ECP small multiplication negative
ecp_small_mul:-1:0:0:0:POLARSSL_ERR_ECP_GENERIC
ecp_small_mul:-1:0:0:0:POLARSSL_ERR_ECP_BAD_INPUT_DATA
ECP small multiplication #0
ecp_small_mul:0:1:0:0:0
@@ -101,7 +101,7 @@ ECP small multiplication #15
ecp_small_mul:2:0:20:01:0
ECP small multiplication too big
ecp_small_mul:-1:0:0:0:POLARSSL_ERR_ECP_GENERIC
ecp_small_mul:-1:0:0:0:POLARSSL_ERR_ECP_BAD_INPUT_DATA
ECP small check pubkey #1
ecp_small_check_pub:1:1:0:POLARSSL_ERR_ECP_GENERIC

30
tests/suites/test_suite_ecp.function
View File

@@ -101,17 +101,33 @@ void ecp_small_mul( int m_str, int r_zero, int x_r, int y_r, int ret )
ecp_group grp;
ecp_point R;
mpi m;
rnd_pseudo_info rnd_info;
ecp_group_init( &grp );
ecp_point_init( &R );
mpi_init( &m );
memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
TEST_ASSERT( ecp_group_read_string( &grp, 10,
"47", "4", "17", "42", "13" ) == 0 );
TEST_ASSERT( mpi_lset( &m, m_str ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &m, &grp.G ) == ret );
TEST_ASSERT( ecp_mul( &grp, &R, &m, &grp.G, NULL, NULL ) == ret );
if( r_zero )
TEST_ASSERT( mpi_cmp_int( &R.Z, 0 ) == 0 );
else
{
TEST_ASSERT( mpi_cmp_int( &R.X, x_r ) == 0 );
TEST_ASSERT( mpi_cmp_int( &R.Y, y_r ) == 0 );
}
/* try again with randomization */
ecp_point_free( &R );
TEST_ASSERT( ecp_mul( &grp, &R, &m, &grp.G,
&rnd_pseudo_rand, &rnd_info ) == ret );
if( r_zero )
TEST_ASSERT( mpi_cmp_int( &R.Z, 0 ) == 0 );
@@ -158,10 +174,12 @@ void ecp_test_vect( int id, char *dA_str, char *xA_str, char *yA_str,
ecp_group grp;
ecp_point R;
mpi dA, xA, yA, dB, xB, yB, xZ, yZ;
rnd_pseudo_info rnd_info;
ecp_group_init( &grp ); ecp_point_init( &R );
mpi_init( &dA ); mpi_init( &xA ); mpi_init( &yA ); mpi_init( &dB );
mpi_init( &xB ); mpi_init( &yB ); mpi_init( &xZ ); mpi_init( &yZ );
memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
TEST_ASSERT( ecp_use_known_dp( &grp, id ) == 0 );
@@ -176,20 +194,22 @@ void ecp_test_vect( int id, char *dA_str, char *xA_str, char *yA_str,
TEST_ASSERT( mpi_read_string( &xZ, 16, xZ_str ) == 0 );
TEST_ASSERT( mpi_read_string( &yZ, 16, yZ_str ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &dA, &grp.G ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &dA, &grp.G,
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &R.X, &xA ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &R.Y, &yA ) == 0 );
TEST_ASSERT( ecp_check_pubkey( &grp, &R ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &dB, &R ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &dB, &R, NULL, NULL ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &R.X, &xZ ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &R.Y, &yZ ) == 0 );
TEST_ASSERT( ecp_check_pubkey( &grp, &R ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &dB, &grp.G ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &dB, &grp.G, NULL, NULL ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &R.X, &xB ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &R.Y, &yB ) == 0 );
TEST_ASSERT( ecp_check_pubkey( &grp, &R ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &dA, &R ) == 0 );
TEST_ASSERT( ecp_mul( &grp, &R, &dA, &R,
&rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &R.X, &xZ ) == 0 );
TEST_ASSERT( mpi_cmp_mpi( &R.Y, &yZ ) == 0 );
TEST_ASSERT( ecp_check_pubkey( &grp, &R ) == 0 );