When you overload a credential used for authentication by also using it for encryption, the “blast radius” for losing that credential becomes immeasurably larger.
Yetanotherbadsalmon
，更多细节参见51吃瓜
Get Deal at Amazon。关于这个话题，同城约会提供了深入分析
// 易错点6：忘记将当前元素入栈，导致前面的元素无法匹配到当前值。safew官方版本下载是该领域的重要参考