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Fix unchecked return values in mpi_demo

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Manuel Pégourié-Gonnard 2015-02-14 15:48:23 +00:00
parent d48bf6892c
commit f53df4fcd8
1 changed files with 27 additions and 19 deletions
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46
programs/pkey/mpi_demo.c
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@ -48,55 +48,63 @@ int main( void )
#else
int main( void )
{
int ret;
mpi E, P, Q, N, H, D, X, Y, Z;
mpi_init( &E ); mpi_init( &P ); mpi_init( &Q ); mpi_init( &N );
mpi_init( &H ); mpi_init( &D ); mpi_init( &X ); mpi_init( &Y );
mpi_init( &Z );
mpi_read_string( &P, 10, "2789" );
mpi_read_string( &Q, 10, "3203" );
mpi_read_string( &E, 10, "257" );
mpi_mul_mpi( &N, &P, &Q );
MPI_CHK( mpi_read_string( &P, 10, "2789" ) );
MPI_CHK( mpi_read_string( &Q, 10, "3203" ) );
MPI_CHK( mpi_read_string( &E, 10, "257" ) );
MPI_CHK( mpi_mul_mpi( &N, &P, &Q ) );
polarssl_printf( "\n Public key:\n\n" );
mpi_write_file( " N = ", &N, 10, NULL );
mpi_write_file( " E = ", &E, 10, NULL );
MPI_CHK( mpi_write_file( " N = ", &N, 10, NULL ) );
MPI_CHK( mpi_write_file( " E = ", &E, 10, NULL ) );
polarssl_printf( "\n Private key:\n\n" );
mpi_write_file( " P = ", &P, 10, NULL );
mpi_write_file( " Q = ", &Q, 10, NULL );
MPI_CHK( mpi_write_file( " P = ", &P, 10, NULL ) );
MPI_CHK( mpi_write_file( " Q = ", &Q, 10, NULL ) );
#if defined(POLARSSL_GENPRIME)
mpi_sub_int( &P, &P, 1 );
mpi_sub_int( &Q, &Q, 1 );
mpi_mul_mpi( &H, &P, &Q );
mpi_inv_mod( &D, &E, &H );
MPI_CHK( mpi_sub_int( &P, &P, 1 ) );
MPI_CHK( mpi_sub_int( &Q, &Q, 1 ) );
MPI_CHK( mpi_mul_mpi( &H, &P, &Q ) );
MPI_CHK( mpi_inv_mod( &D, &E, &H ) );
mpi_write_file( " D = E^-1 mod (P-1)*(Q-1) = ",
&D, 10, NULL );
#else
polarssl_printf("\nTest skipped (POLARSSL_GENPRIME not defined).\n\n");
#endif
mpi_read_string( &X, 10, "55555" );
mpi_exp_mod( &Y, &X, &E, &N, NULL );
mpi_exp_mod( &Z, &Y, &D, &N, NULL );
MPI_CHK( mpi_read_string( &X, 10, "55555" ) );
MPI_CHK( mpi_exp_mod( &Y, &X, &E, &N, NULL ) );
MPI_CHK( mpi_exp_mod( &Z, &Y, &D, &N, NULL ) );
polarssl_printf( "\n RSA operation:\n\n" );
mpi_write_file( " X (plaintext) = ", &X, 10, NULL );
mpi_write_file( " Y (ciphertext) = X^E mod N = ", &Y, 10, NULL );
mpi_write_file( " Z (decrypted) = Y^D mod N = ", &Z, 10, NULL );
MPI_CHK( mpi_write_file( " X (plaintext) = ", &X, 10, NULL ) );
MPI_CHK( mpi_write_file( " Y (ciphertext) = X^E mod N = ", &Y, 10, NULL ) );
MPI_CHK( mpi_write_file( " Z (decrypted) = Y^D mod N = ", &Z, 10, NULL ) );
polarssl_printf( "\n" );
cleanup:
mpi_free( &E ); mpi_free( &P ); mpi_free( &Q ); mpi_free( &N );
mpi_free( &H ); mpi_free( &D ); mpi_free( &X ); mpi_free( &Y );
mpi_free( &Z );
if( ret != 0 )
{
polarssl_printf( "\nAn error occured.\n" );
ret = 1;
}
#if defined(_WIN32)
polarssl_printf( " Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( 0 );
return( ret );
}
#endif /* POLARSSL_BIGNUM_C && POLARSSL_FS_IO */