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crypt(word.salt) crypt gensalt

时间:2020-07-06 09:31:12
文件上后缀名出现 crypt怎么解决Trojan Crypt dj病毒分类是WINDOWS下的PE病毒;行为类型是WINDOES下的木马程序;2。Trojan Crypt dj"地穴"变种dj是一个对
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crypt(word.salt)

文件上后缀名出现.crypt怎么解决

Trojan.Crypt.dj病毒分类是WINDOWS下的PE病毒;行为类型是WINDOES下的木马程序;2。

Trojan.Crypt.dj"地穴"变种dj是一个对被感染的计算机进行各种攻击的木马程序。

"地穴"变种fy运行后,自我复制到系统目录下,文件名win32.exe。

修改注册表,实现开机自启。

侦听黑客指令,盗取用户机密信息,利用HTTP POST将被感染计算机上的机密信息发送到黑客手中杀毒吧,要不就重装系统。

【Wecansee

例:$user_name=$_POST["user_name"];require_once("sys_conf.inc"); //系统配置文件,包含数据库配置信息//连接数据库$link_id=mysql_connect($DBHOST,$DBUSER,$DBPWD);mysql_select_db($DBNAME); //选择数据库my_chat//查询是否存在登录用户信息$str="select name,password from user where name ="$user_name"";$result=mysql_query($str,$link_id); //执行查询@$rows=mysql_num_rows($result); //取得查询结果的记录笔数$user_name=$_SESSION["user_name"];$password=$_POST["password"];$salt = substr($password, 0, 2);$password_en=crypt($password,$salt); //使用crypt()对用户密码进行加密//对于老用户if($rows!=0){list($name,$pwd)=mysql_fetch_row($result);//如果密码输入正确if($pwd==$password_en){$str="update user set is_online =1 where name ="$user_name" and password="$password_en"";$result=mysql_query($str, $link_id);//执行查询require("main.php"); //转到聊天页面}//密码输入错误else{require("relogin.php");}}//对于新用户,将其信息写入数据库else{$str="insert into user (name,password,is_online) values("$user_ name","$password_en",1)";$result=mysql_query($str, $link_id); //执行查询require("main.php"); //转到聊天页面}//关闭数据库mysql_close($link_id);?>核心部分在于第16、17行使用crypt()函数获取加密后的密码,而通过在第25行比较数据库中的密码和加密后的密码是否相等来检查用户是否合法。

例如,用户名为rock,密码为123456,则加密后的密码为: 12tir.zIbWQ3c 上面就实现了一个简单的用户身份验证系统。

在使用crypt()保护重要的机密信息时,需要注意的是,在缺省状态下使用crypt()并不是最安全的,只能用在对安全性要求较低的系统中。

更多问题到后盾网问题求助专区。

php中crypt加密完是多少位

机器没有重启并进入c盘windows系统,请重新安装.; boot 如果输入以上命令后; makeactive grub&gt.Anywhere else TAB lists the possible completions of a clevice/ chainloader +1 grub> rootnoverify (hd0,0) (假设你的系统安装在c盘) grub&gt..??如果真的是grup,那么;filename] grub: (注意最后看最后这个提示符是grub还是grup???:36 下面是我从网上找的,希望能帮你解决问题进入到你的系统 [Minma]BASH-like line editing is supported For the first word ,TAB lists possible command copletions 回答人的补充 2011-03-25 12,下面的就不要看了) 按TAB可获得命令列表 grub&gt

【悬赏】shadow文件加密算法

这个你首先要清楚这个加密的方法linux用户验证加密中引入了一个叫作salt的东西这个东西是一个随机数,在添加用户时随机生成然后根据这个随机生成的salt与设置的密码进行某种算法最终得出最后的密文最终密码大概是这样的$id$salt$encode这里id的数字表示使用什么样的方法生成密文在linux下通过man crypt函数可以看到这个idID | Method─────────────────────────────────────────────────────────1 | MD52a | Blowfish (not in mainline glibc; added in some| Linux distributions)5 | SHA-256 (since glibc 2.7)6 | SHA-512 (since glibc 2.7)这是我man复制后的结果(不知道会不会乱掉= =)所以按着这个表可以看出你的这个使用的加密算法为sha-512(id为6)这个密码生成可以使用crypt函数完成,第一个参数为你设置的密码123456第二个参数为$6$BRjbojm3ZjL.GPSV生成的结果就会是你帖出来的这个密文一般现在网页提供的那种md5之流反查(破解)的东西基本上都是在后台拥有大量数据的查询的时候通过你提交的字符串与数据库中的数据进行对比然后找出存在于数据库中的“原文”如果无法在数据库中匹配到提交的字符串自然就无法破解了(当然可能有些网站也会提供暴力破解,根据我上面说的,写一个暴破的工具很容易的)而这种数据库多数是使用一些常见的字符串(比如弱密码等)生成放入数据库的,但就像上面所说的那样linux用户验证所生成的密码是用一个随机生成的salt作为key进行加密生成的,这样即使你两个用户使用同样的密码那生成的密文也是不同的(当然如果生成的随机字符串刚好相同的话,当我没说),所以除非暴力破解,否则这个所谓的在线破解是无法破解linux这个密文密码的至于说网页会提示无法识别是因为有些网站会根据你提交的字符串进行一些判断比如判断它是md5加密还是sha等,就像我上面所说的那样,它无法通过数据库这种方式破解,所以无法识别(当然如果有支持暴力破解并支持linux验证破解的话另说)

求The Notorious BIG 《Juicy》完整歌词

Intro: (Fuck all you hoes) Get a grip motherfucker.Yeah, this album is dedicated to all the teachers that told me I"d never amount to nothin", to all the people that lived above the buildings that I was hustlin" in front of that called the police on me when I was just tryin" to make some money to feed my daughters, and all the niggaz in the struggle, you know what I"m sayin"?Uh-ha, it"s all good baby bay-bee, uh Verse One: It was all a dream I used to read Word Up magazine Salt"n"Pepa and Heavy D up in the limousine Hangin" pictures on my wall Every Saturday Rap Attack, Mr. Magic, Marley Marl I let my tape rock "til my tape popped Smokin" weed and bamboo, sippin" on private stock Way back, when I had the red and black lumberjack With the hat to match Remember Rappin" Duke, duh-ha, duh-ha You never thought that hip hop would take it this far Now I"m in the limelight "cause I rhyme tight Time to get paid, blow up like the World Trade Born sinner, the opposite of a winner Remember when I used to eat sardines for dinner Notorious B.I.G.Peace to Ron G, Brucey B, Kid Capri Funkmaster Flex, Lovebug Starsky I"m blowin" up like you thought I would Call the crib, same number same hood It"s all good Uh, and if you don"t know, now you know, nigga, uh Chorus:You know very well who you are Don"t let em hold you down, reach for the stars You had a goal, but not that many"cause you"re the only one I"ll give you good and plenty Verse Two: I made the change from a common thief To up close and personal with Robin Leach And I"m far from cheap, I smoke skunk with my peeps all day Spread love, it"s the Brooklyn way The Moet and Alize keep me pissy Girls used to diss me Now they write letters "cause they miss me I never thought it could happen, this rappin" stuff I was too used to packin" gats and stuff Now honies play me close like butter played toast From the Mississippi down to the east coast Condos in Queens, indo for weeks Sold out seats to hear Biggie Smalls speak Livin" life without fear Puttin" 5 karats in my baby girl"s ears Lunches, brunches, interviews by the pool Stereotypes of a black male misunderstood And it"s still all good Uh...and if you don"t know, now you know, nigga Verse Three: Super Nintendo, Sega Genesis When I was dead broke, man I couldn"t picture this 50 inch screen, money green leather sofa Got two rides, a limousine with a chauffeur Phone bill about two G"s flat No need to worry, my accountant handles that And my whole crew is loungin" Celebratin" every day, no more public housin" Thinkin" back on my one-room shack Now my mom pimps a Ac" with minks on her back And she loves to show me off, of course Smiles every time my face is up in The Source We used to fuss when the landlord dissed us No heat, wonder why Christmas missed us Birthdays was the worst days Now we sip champagne when we thirst-ay Uh, damn right I like the life I live "Cause I went from negative to positive And it"s all... (It"s all good)...and if you don"t know, now you know, nigga, uh Uh, uh...and if you don"t know, now you know, nigga Uh...and if you don"t know, now you know, nigga, uh Representin" B-Town in the house, Junior Mafia, mad flavor, uh Uh, yeah, a-ight

英语单词变化的规律是什么?这些:

不能用汉字理解英文!要是用汉字就能造就英文高手的话,中国人全都是英文大师了!英文词汇学,中国高手,对不起,一个没有!只要用汉字研究的,全都研究成汉字了!我的书库里有二百种,选出所谓权威的提供在这里。

英文权威著作如下:Flexner, S. B. (1971). How to Increase Your Word Power. Pleasantville, NY: Reader"s Digest Association.Lewis, N. (1978-49). Word Power Made Easy. Garden City, NY: Doubleday & Company, Inc.Lewis, N. (1979). Word Power Made Easy: the Complete Handbook for Building a Superior Vocabulary (Expanded and completely rev. ed.). New York, NY: Pocket Books.Reader"s Digest Asia Ltd. (1972). Word Power from the Reader"s Digest. London: The Reader"s Digest Association Limited.理论的:Lederer, R. (2003). A Man of My Words: Reflections on the English Language (1st ed.). New York, NY: St. Martin"s Press.这位是美国玩儿文字的第一高手。

Lederer, R., & Morice, D. (1998). The Word Circus: a Letter-Perfect Book. Springfield, MA: Merriam-Webster.也是他的。

Lin林承璋, C. e.-c. (1987). An Introduction to English Lexicology英语词汇学引论. Wu-han武汉: Wuhan University Press武汉大学出版社.Lin林福美, F.-M. (1985). Modern English Lexicology现代英语词汇学. 合肥: 安徽教育出版社Anhui Education Press.Zhang张韵斐, Y., & Zhou周锡卿, X. (1986). An Introduction to Modern English Lexicology现代英语词汇学概论. Beijing, China中国北京: 北京师范大学出版社.中国人用英文写的,可以翻翻。

Rayevskaya, N. M. (1957). English Lexicology. Kiev: Kiev State University Publishing House.俄国人写的,奠定了中国几乎所有的英语词汇学的基础。

祝进步。

在网上找找,也有。

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