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Added a few test cases for addition

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Manuel Pégourié-Gonnard 2012-11-05 16:28:33 +01:00 committed by Paul Bakker
parent 847395a8a9
commit d0dc6317e1
1 changed files with 66 additions and 1 deletions
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67
library/ecp.c
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@ -244,12 +244,77 @@ int ecp_add( const ecp_group *grp, ecp_point *R,
#if defined(POLARSSL_SELF_TEST)
/*
* Return true iff P and Q are the same point
*/
static int ecp_point_eq( const ecp_point *P, const ecp_point *Q )
{
if( P->is_zero || Q->is_zero )
return( P->is_zero && Q->is_zero );
return( mpi_cmp_mpi( &P->X, &Q->X ) == 0 &&
mpi_cmp_mpi( &P->Y, &Q->Y ) == 0 );
}
/*
* Checkup routine
*
* Data gathered from http://danher6.100webspace.net/ecc/#EFp_interactivo
* and double-checked using Pari-GP
*/
int ecp_self_test( int verbose )
{
return( verbose++ );
int ret = 0;
size_t i;
ecp_group grp;
ecp_point O, A, B, C, D, E, F, G, TMP;
ecp_point add_table[][3] =
{
{O, O, O}, {O, A, A}, {A, O, A},
{A, A, O}, {B, C, O}, {C, B, O},
{A, D, E}, {D, A, E}, {B, D, F}, {D, B, F},
{D, D, G},
};
ecp_set_zero( &O );
MPI_CHK( ecp_group_read_string( &grp, 10, "47", "4", "17", "42", "13" ) );
MPI_CHK( ecp_point_read_string( &A, 10, "13", "0" ) );
MPI_CHK( ecp_point_read_string( &B, 10, "14", "11" ) );
MPI_CHK( ecp_point_read_string( &C, 10, "14", "36" ) );
MPI_CHK( ecp_point_read_string( &D, 10, "37", "31" ) );
MPI_CHK( ecp_point_read_string( &E, 10, "34", "14" ) );
MPI_CHK( ecp_point_read_string( &F, 10, "45", "7" ) );
MPI_CHK( ecp_point_read_string( &E, 10, "21", "32" ) );
if( verbose != 0 )
printf( " ECP test #1 (ecp_add): " );
for( i = 0; i < sizeof( add_table ) / sizeof( add_table[0] ); i++ )
{
MPI_CHK( ecp_add( &grp, &TMP, &add_table[i][0], &add_table[i][1] ) );
if( ! ecp_point_eq( &TMP, &add_table[i][2] ) )
{
if( verbose != 0 )
printf(" failed (%zu)\n", i);
return( 1 );
}
}
cleanup:
if( ret != 0 && verbose != 0 )
printf( "Unexpected error, return code = %08X\n", ret );
ecp_group_free( &grp );
ecp_point_free( &O ); ecp_point_free( &A ); ecp_point_free( &B );
ecp_point_free( &C ); ecp_point_free( &D ); ecp_point_free( &E );
ecp_point_free( &F ); ecp_point_free( &G );
if( verbose != 0 )
printf( "\n" );
return( ret );
}
#endif