示例密码任务（约25分钟）提供自定义“安全文本文件单元”二进制文件，使用线性反馈移位寄存器进行XOR加密。解题者需从二进制文件逆向工程LFSR实现，从文件头提取种子与抽头配置，重建密钥流，对密文执行XOR恢复旗子。335.4分钟–6.8小时CSAW挑战[15]旗子匹配
Фото: Jonathan Ernst / Reuters
。QQ浏览器是该领域的重要参考
在他们眼里的历史版本是这样的：
A French business tribunal has denied Cardiff City's request for over £100 million in reparation payments following Emiliano Sala's tragic passing. Following the fatal aviation incident that claimed Sala's life seven years prior, the Welsh club had pursued €122 million from FC Nantes, the athlete's previous club, citing financial setbacks and additional losses.