攻防世界-密码学-Easy one 1. 题目信息 题目这样描述:“破解密文,解密msg002.enc文件”,并且提供附件下载,附件中有4个文件:encryptor.c、msg001、msg001.enc与msg002.enc。 2. 分析 encryptor.c向我们展示了加密的原理, c = (p + (k[i %strlen(k)] ^ t) + i*i) &0xff; 对
RSA算法原理(一) - 阮一峰的网络日志www.ruanyifeng.com/blog/2013/06/rsa_algorithm_part_one.html 这里我直接给出RSA密钥对生成具体的计算规则: 1. 选取两个安全大素数p和q(“大”指的是长度要长,目前推荐至少为1024比特) 2. 计算乘积n=p*q,以及n的欧拉函数φ(n) = (p-1)(q-1); 3. 随机选...
从zoom到Easyjet,那些最生动的企业安全建设培训课 作为境外在线会议的主流产品代表,Zoom此前因为其自身的安全漏洞变得更火了。 虽然Zoom官方承诺将逐步解决漏洞,Zoom的用户数量似乎也没有明显减少。但市场竞争格局已经发生改变,Zoom的老对手、微软Teams正在迎头赶上,隐隐有要在海外市场将Zoom取而代之的势头。 这对于所...
用IDA打开文件找到main函数按F5查看伪代码。可以看到输入的字符串v5再把v5进行加密处理,然后再匹配输入字符串的长度是否匹配。 进入到encode函数里,首先要知道key的长度是多少,在main函数中可以看到!strcmp(&s,enflag) enflag就是key的长度,双击enflag得到key的长度为18 脚本: key的长度为12h 、12h是十六进制,将...
如今,太极拳在中国乃至世界受到越来越多人欢迎。(分数:2.00) ___正确答案:(正确答案:Taijiquan is precious wealth of Chinese nation and an important part of the eastern culture. As one of the ancient martial arts in China, it is usually used for attacking and defending, body building and self-...
One should not make judgments based on appearance. 3 阅读理解。 Like fine food, good writing is something we approach with pleasure and enjoy from the first taste to the last. And good writers, like good cooks, do not suddenly appear full-blown. Quite the opposite, just as the cook ...
Nowadays, acupuncture, along with Chinese food, kung fu (otherwiseknown as Chinese martial arts), and traditional Chinese medicine, has been internationally hailedas one of the “four new national treasures.”六、中国功夫即中国武术承载着丰富的中国民族传统 文化,是将攻防技术寓于搏斗和套路运动之中的...
公里处。 39、One Wheel Of my Car is OUt Of Order On WOUId you PIeaSe do me a favor (my Wheel is broken On……,help me PIeaSe)我的车轮在某路上坏了,请您帮忙。 40、My Wanet has been StOIen.( My Wanet WaS stolen.) 我的钱包被人偷走了。 41S Ok ,our COneagUeS Win respond to...
"You need your feet for soccer and you need words for music, but they make us think of one and 70 same thing--- passion." 第四部分 写作(共两节,满分 35 分) 第一节 短文改错(共 10 小题;每小题 1 分, 满分 10 分) 以下短文当中共有 10 处语言错误,每句中最多有两处。...