Dotmad.net

A friend sent me the following code, meant to do simple string comparison for a standard password changing dialog:

           char buf[256]

            test_pass = 0;            for (i = 0; i < strlen(buf); ++i)            {                test_pass ^= (unsigned long)buf[i] << (i%4)*8;                test_pass = test_pass << (i%4)*8  test_pass >> (32 - (i%4)*8);            }

            sscanf(g_config.m_pPassword, "%08X", &old_pass);            if (test_pass == old_pass)            {                // Get new password                GetDlgItemText(IDC_EDIT_NEW_PASS, buf, 255);

                test_pass = 0;                for (i = 0; i < strlen(buf); ++i)                {                    test_pass ^= (unsigned long)buf[i] << (i%4)*8;                    test_pass = test_pass << (i%4)*8  test_pass >> (32 - (i%4)*8);                }

                // Check configmation                GetDlgItemText(IDC_EDIT_NEW_PASS2, buf, 255);

                test_pass2 = 0;                for (i = 0; i < strlen(buf); ++i)                {                    test_pass2 ^= (unsigned long)buf[i] << (i%4)*8;                    test_pass2 = test_pass2 << (i%4)*8  test_pass2 >> (32 - (i%4)*8);                }

                if (test_pass != test_pass2)

        {            MsgBox(".....");            EndDailog(1)

        }        sprintf(buf,"%08",test_pass);    }