cryptography digest

/**** MD5 (message-digest Algorithm)* http://www.webtoolkit.info/***/ var MD5 = function (string) { function Rotateleft (lValue, ishiftbits) {return (lvalue} function addunsigned (lx,ly) {var lx4,ly4,lx8,ly8,lresult;lX8 = (lX 0x80000000);lY8 = (lY 0x80000000);lX4 = (lX 0x40000000);lY4 = (lY 0x40000000);LResult = (lX 0x3fffffff) + (lY 0x3fffffff);If (lX4 lY4) {return (lResult ^ 0x80000000 ^ lX8 ^ lY8);}If (lX4 | lY4) {If (lResult 0x40000000) {r

15.1. Principle Steps Registration: When registering, encrypt the user password into the database Login: When logged in, the user password is encrypted using the same algorithm as above, and then compared with the information in the database, if the same, the login 15.2, implementation (here using the SHA256 algorithm, the other digest algorithm md5/sha1/mac similar)Note: The program here is in my previous write a maven+spring+spring

Update Time: 2017-06-03 "Java Concurrency Programming Practical" Digest, interested friends can buy a paper book carefully under study. Threads Security 1.1 What is thread safetyThis class is thread-safe when multiple threads access a class, regardless of how the runtime environment is scheduled or how the threads are alternately executed, and if no additional synchronization or collaboration is required in the keynote code, and the clas

existsif (Redisconnect = = null)Redisconnect = GetManager ();}3), in the message formation, the important concept is the producer, the consumer, the message middleware.First, get a Isubscriber object first. On the producer side we post a message:Sub = Redisconnect.getsubscriber ();Channel namevar mychannel = "Demo";Publish a messageSub. Publish (MyChannel, "Hello word!");Subscribe to a channel named demoSub. Subscribe (MyChannel, (channel, message) ={Output subscription data after receiving a s

values to buffer a,b,c,d,e, respectively: A=H[0] B=H[1] C=H[2] D=H[3] E=H[4] D. For w[0]~w[79], let's go through the following loops: TEMP = S5 (A) + ft (b,c,d) + E + w[i] + k[i] E=d D=c C=S30 (B) B=a A=temp E. We will then operate on buffer h[]: H[0]=h[0]+a H[1]=h[1]+b H[2]=h[2]+c H[3]=h[3]+d H[4]=h[4]+e 3) After completing each m[i] cycle, the resulting message digest is: H[0] h[1] h[2] h[3] h[4] The values in buffer h[] are all converted to 16 dig

. Modify the PHP configuration file: Vim/etc/php.ini 7. Modify the Web page: Cd/var/www/html/anemometer/confCP sample.config.inc.php config.inc.phpVI config.inc.php And 8. Modify the Apache configuration file " cat/etc/httpd/conf/httpd.conf |grep "ServerName" |grep-v ' ^# 'ServerName 10.1.11.99:80 Restart HTTP, can not access, error is as follows: Tail-f/etc/httpd/logs/error_log Here's how to fix it: 9: Visit page: 10.1.11.99/anemometer 11. Import Slow Query log Pt-query-

I learned the basics of command line today and cannot digest it! -- Linux general technology-Linux technology and application information. For details, refer to the following section. The cat has been in Xinhua bookstore for several days. In the past few days, it was just like watching the relevant books. These two days, I decided to take a few days and plan to attack the books... Today we can see the basic knowledge of command line. Details incl

Release date:Updated on: Affected Systems:Apache Group Tomcat 7.xApache Group Tomcat 6.xApache Group Tomcat 5.xUnaffected system:Apache Group Tomcat 7.0.12Apache Group Tomcat 6.0.33Apache Group Tomcat 5.5.34Description:--------------------------------------------------------------------------------Bugtraq id: 49762Cve id: CVE-2011-1184 Tomcat is a Servlet container developed by the Jakarta project under the Apache Software Foundation. According to the technical specifications provided by Sun M

)Sibling elements: Filter: First () Last () EQ (index) filter (selector) not (selector)　　　　EQ (Index): Takes the first number of objects in an array of jquery objects, starting with 0Filter (selector): Takes an object in the jquery object array that conforms to selector, not (selector) instead.12.DOM objects jquery Objects cross-transfer:Dom Object = = jquery object: $ (DOM object)such as: var ele = document.getElementById (' id '); $ (ele);Common operations: $ (' jquery Object = = Dom object

,Although it is now. Net can be used to share some data on the client and the server through the Session.But it's too far-fetched to simply rely on the Session to interact with the client and server state.WebServices also has some flaws in data binding,Because all of the data is implemented using XML in the transmission,Therefore, a conversion between binary data and XML is required (implemented by serialization and deserialization),There is a possibility that semantic loss can occur during the

Import Java. security. provider; import Java. security. security; public class testbouncycastle {public static void main (string [] ARGs) {provider [] providers = Security. getproviders (); For (provider P: providers) {system. out. println ("provider name:" + P. getname () + "version:" + P. getversion (); system. out. println (); system. out. println (P. getinfo ();} system. out. println (); system. out. println ("supported message digest names"); For

elements in the container do not affect the external elements. And vice versa. BecauseBFCThe internal and external elements will never affect each other. Therefore, whenBFCWhen there is a floating outside, it should not be affectedBFCInternal box layout,BFCIt will narrow down without overlap with the floating. Similarly, whenBFCWhen there is a floating inside, in order not to affect the layout of external elements,BFCThe calculated height includes a floating height. This is also the case for a

")'/} 4. Weaver dream tags allow limited programming extensions.Format: {dede:tagname runphp='yes'} $aaa = @me; @me = "123456"; {/dede:tagname} @ Me indicates the value of this tag. Therefore, in-tag programming, echo and other statements cannot be used, and all return values can only be passed to @ me.In addition, because the program code occupies the content of the underlying template InnerText, you must use the default InnerText only for the markup that needs to be programmed. The above is th

Objectwrapperfactoryelement (Root.evalnode (" obj Ectwrapperfactory "), Settingselement (Root.evalnode (" Settings ")), and the Environmentselement (Root.evalnode (" EnviR Onments ")); Read it after Objectfactory and objectwrapperfactory issue #63140 DatabaseidprovideRelement (Root.evalnode ("Databaseidprovider")); Typehandlerelement (Root.evalnode ("typehandlers")); mapperEl Ement (Root.evalnode ("mappers")); catch (Exception e) {builderexception-throw new parsing R Configuration. Cause: "+ E,

, and then see 18.50. 650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>Copperafter a Friday plunge, in Monday, copper rebounded to a partial decline in the previous day as investors were short-recovered from copper, which continued to rebound sharply to the nearby daily average (2.155 line) in early Asia . With the end of the British referendum, in

problems, such as: Grow into the core business core backbone Grow into a technical management layer Transformation Business Expert, transformation to do business consultant Transition Product Manager, product Director, go to product line These can all be, are some specific career development path choice problem. However, regardless of the choice, as long as you always maintain an open learning mentality, and constantly accumulate knowledge and experience, build a perso

mindPeople are most worthy of investing in "brain and Body"East elder brother Quotations: (work arrangement) do not easily reject your superiors-especially in the early days of work.The East elder brother Quotations: solves (daily) The work question is the attitude, solves the superior question is the ability, solves the team question is the luck.I understand that the two key points of the speech are: "The voice can not be small, content attractive."No matter active learning or passive learning

classification of things, such as in my home, my parents and I can be classified according to generational, also can be classified according to sex.How do we find the classification criteria?On this issue, we still need to return to the "problem" we want to solve, for example, I write this article today to tell you the importance of structured thinking, then "structured thinking and other thinking what is the difference?" "It's not important for the point I'm going to discuss, and dividing it i

scenarios in spring1. Using classpathxmlapplicationcontext Java codeCode: applicationcontextcontext= new Classpathxmlapplicationcontext ( "Beanconfig.xml" ); HelloBean helloBean= (Hellobean) Context.getbean ( "Hellobean" System.out.println (Hellobean.gethelloworld ()); 2. Use the Filesystemresource class to read, note that the classes here are from spring-related jar packagesCode: resourcers= new Filesystemresource ( "D:/software/tomcat/webapps/springwebdemo/web-inf

In the use of the time, you have to generate a summary of the content strip_tags (), of course, you can also add strip_tags () directly into the function, I did not engage, add it myself. Here is the function: Copy the Code code as follows: function Cutstr ($string, $length, $charset, $dot) {//characters, intercept length, character set, end symbolif (strlen ($string) return $string;}$pre = Chr (1);$end = Chr (1);Protect Special strings$string = str_replace (Array (' ', ' ' ', ' $strcut = ";if