Add checks for return values to md functions
@@ -277,10 +277,27 @@ int main( int argc, char *argv[] )
p = argv[2];
- mbedtls_md_starts( &md_ctx );
- mbedtls_md_update( &md_ctx, buffer, 8 );
- mbedtls_md_update( &md_ctx, (unsigned char *) p, strlen( p ) );
- mbedtls_md_finish( &md_ctx, digest );
+ if( mbedtls_md_starts( &md_ctx ) != 0 )
+ {
+ mbedtls_fprintf( stderr, "mbedtls_md_starts() returned error\n" );
+ goto exit;
+ }
+ if( mbedtls_md_update( &md_ctx, buffer, 8 ) != 0 )
+ {
+ mbedtls_fprintf( stderr, "mbedtls_md_update() returned error\n" );
+ goto exit;
+ }
+ if( mbedtls_md_update( &md_ctx, ( unsigned char * ) p, strlen( p ) )
+ != 0 )
+ {
+ mbedtls_fprintf( stderr, "mbedtls_md_update() returned error\n" );
+ goto exit;
+ }
+ if( mbedtls_md_finish( &md_ctx, digest ) != 0 )
+ {
+ mbedtls_fprintf( stderr, "mbedtls_md_finish() returned error\n" );
+ goto exit;
+ }
memcpy( IV, digest, 16 );
@@ -302,10 +319,30 @@ int main( int argc, char *argv[] )
for( i = 0; i < 8192; i++ )
{
- mbedtls_md_starts( &md_ctx );
- mbedtls_md_update( &md_ctx, digest, 32 );
- mbedtls_md_update( &md_ctx, key, keylen );
- mbedtls_md_finish( &md_ctx, digest );
+ if( mbedtls_md_starts( &md_ctx ) != 0 )
+ {
+ mbedtls_fprintf( stderr,
+ "mbedtls_md_starts() returned error\n" );
+ goto exit;
+ }
+ if( mbedtls_md_update( &md_ctx, digest, 32 ) != 0 )
+ {
+ mbedtls_fprintf( stderr,
+ "mbedtls_md_update() returned error\n" );
+ goto exit;
+ }
+ if( mbedtls_md_update( &md_ctx, key, keylen ) != 0 )
+ {
+ mbedtls_fprintf( stderr,
+ "mbedtls_md_update() returned error\n" );
+ goto exit;
+ }
+ if( mbedtls_md_finish( &md_ctx, digest ) != 0 )
+ {
+ mbedtls_fprintf( stderr,
+ "mbedtls_md_finish() returned error\n" );
+ goto exit;
+ }
}
