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标题:腾讯云云产品新购特惠,五折上云!
地址:https://cloud.tencent.com/act/first_purchase?utm_source=portal&utm_medium=cdb&utm_campaign=firstpurchase&utm_term=0110
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Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36
我刚找到这支铅笔和纸密码“Felix”,我想知道它有多安全?
编辑
来自http://web.archive.org/web/20110825142054/http://topcat.hypermart.net/papers/felix.txt
费利克斯是一种铅笔和纸张密码。简介费利克斯是一个pencil-and-paper cipher' offering relatively good security for causal use. Unlike modern encoding schemes that require, at a minimum, a co