2 d cad

The previous blogs have implemented Nginx HTTP access and Apache HTTPS encryption connection, so they are now combined to implement the Nginx-based HTTPS encryption connection.First, the Environment preparationThis time I've prepared two VMS and a real computer, One IP for 172.16.128.7 host as a server, install Nginx software to provide HTTPS services, another IP for the 172.16.128.8 host as a CA, certificate verification, the last real computer to te

In general, VPN users are connected to the VPN server is to enter the password, if so, in some public places when the password is likely to cause leakage of passwords, resulting in unnecessary losses. Password Authentication protocol Although the hardware requirements are not as high as the Challenge Handshake protocol, however, in terms of security, it is still a distance from the challenge handshake agreement. The specific authentication protocol to be used, the user should be judged according

will be wasted, this program: AsyncSelect function is a key. Lin Jun's Winsock programming book reads: "Fd_write Event" The system informs us of the Fd_write event, with only the following: (1) to call WSAAsyncSelect () to set the Fd_write event, the Socket has been able to transfer data (TCP Scoket has successfully connected with the other party, or UDP Socket has been established), and currently output buffer still have space to write into the data. (

Tags: des style blog HTTP Io color ar OS sp Create a Certificate Authority private key (this is your most important key ): $ openssl req -new -newkey rsa:1024 -nodes -out ca.csr -keyout ca.key Create your ca self-signed certificate: $ openssl x509 -trustout -signkey ca.key -days 365 -req -in ca.csr -out ca.pem Issue a client certificate by first generating the key, then request (or use one provided by external system) then sign the certificate u

;padding-right:0px;padding-top:0px;border:0px ; "title=" clip_image004 "src=" Http://images.cnblogs.com/cnblogs_com/sunscz/201209/20120919221138627.png "alt=" clip_image004 "height=" 226 "border=" 0 "width=" 467 "/>650) this.width=650; "Style=" background-image:none;padding-left:0px;padding-right:0px;padding-top:0px;border:0px ; "title=" clip_image005 "src=" Http://images.cnblogs.com/cnblogs_com/sunscz/201209/201209192211426596.png "alt=" clip_image005 "height=" 378 "border=" 0 "width=" 511 "/>S

vim/etc/pki/tls/openssl.conf Opening a configuration fileSwitch to/etc/pki/ca:cd/etc/pki/caCreate the missing files touch index.txtecho > SerialCA self-Visa certificate (umask 077;openssl genrsa-out PRIVATE/CAKEY.PEM 2048) 2048 for specifying the key lengthOpenSSL req-new-x509-key private/cakey.pem-days 7300-out Private/cacert.pem-new used to generate a new certificate signing request-x509 for a CA to generate self-signed certificates-key used to indi

CA has conditional receiving system and scrambling and encrypting two parts. Scrambling is an image, sound, and data stream under the control of a CW (or a key) in a way that makes it impossible to watch, and encryption is the process of protecting the key. The encrypted key must be transmitted to the client along with the scrambling signal. On the client side, the solution CW is decrypted with the smart card, and the scrambling signal is disturbed by

Careplicatorlayer(Reflection application)Specifies a reflectionview that inherits from UIView, which automatically produces the reflected effect of the content:+ (Class) layerclass// We can also override this method in view to create the layer class we need {return [Careplicatorlayer class];}-(void) SetUp{//configure ReplicatorCareplicatorlayer *layer = (Careplicatorlayer *) Self.layer;layer.instancecount = 2;//move Reflection instance below original

cryptography: The public key is extracted from the private key, the use of private key encrypted files, can only use the public key decryption, and vice versa;Algorithms: RSA, DSA, ELGamal, DH3, asymmetric encryption of one-way encryption: can only be encrypted, not decrypted, to extract the data signature.Algorithms: MD5, SHA series 256, 384, 512, 128Ii. the process of encrypting the communication at one time by OpenSSL:Sent by:1. Extracting data signatures using a one-way encryption algorithm

Back to Yoshifumi in dealing with palindrome really better than manacher to be more useful ...#include #include#include#include#include#defineREP (I,A,B) for (int i=a;i#defineMS0 (a) memset (A,0,sizeof (a))using namespaceStd;typedefLong Longll;Const intmaxn=1100;Const intinf=1e9+Ten;intn,q;CharS[MAXN];intL,r;ll ANS[MAXN][MAXN];structpalintree{intch[maxn][ -],F[MAXN]; intN,tot,last; intLEN[MAXN],CNT[MAXN]; intS[MAXN]; intNewNodeintl) {MS0 (Ch[tot]); Cnt[tot]=0; len[tot]=l; returntot++; } voidi

Reference Link:1,http://stackoverflow.com/questions/15932041/how-can-i-add-a-watermark-in-a-captured-video-on-ios (add watermark)2,https://abdulazeem.wordpress.com/2012/04/02/ Video-manipulation-in-ios-resizingmerging-and-overlapping-videos-in-ios (Synthetic video)3,http://www.raywenderlich.com/30200/avfoundation-tutorial-adding-overlays-and-animations-to-videos (add watermark Animation)Example:[email protected]: Ludawei/testioslibs.gitiOS video editi

Test instructionsT Group data:n digits, whichever is the gcd of all combinations of 1-n numbersIdea: DP/*DP[I][J] Indicates the number of all methods gcd=j with the first I number.Dp[i + 1][GCD (j,a[i + 1])] + + dp[i][j];Dp[i + 1][j] + = dp[i][j];*/1#include 2#include 3#include 4 5#include 6#include Set>7#include 8#include 9#include Ten#include string> One#include A -#include - #defineRep (i,n) for (int (i) =0; (i) the #defineAll (o) (o). Begin ()

Centos7+nginx issuing and configuring SSL services through Windows CARecently in the knowledge of Linux, as a necessary knowledge of operations engineer, a Web service especially run on the Internet is very easy to attack, so in order to ensure the minimum security needs to configure the Web service SSL, this can improve the security, so we introduce today, CENTOS7 +nginx The SSL service is issued and configured through the Windows CA, of course, if i

After the Ad Server deployment is complete, install a server to join the existing domain, deploy the CA server, and initialize the server before adding the domain: computer name, IP address, firewall, Windows patch.1. Open Server Manager on a domain member server, select Add Roles and Features2. Next step3. Next step4. Next step5. Select Active Directory Certificate Services, add features6. Add complete7. Next Step8. Next Step9. Add the Certification

VISUALSVN Server Download Address: http://www.visualsvn.com/server/download/ OpenSSL download Address: http://code.google.com/p/openssl-for-windows/ Also available for download through my resources: http://download.csdn.net/detail/deleteelf/4161438 Note that OpenSSL requires support from C + + Redistributable 2008 Version: HTTP://WWW.MICROSOFT.COM/DOWNLOADS/ZH-CN/DETAILS.ASPX?FAMILYID=9B2DA534-3E03-4391-8A4D-074B9F2BC1BF 2010 Version: http://www.microsoft.com/downloads/zh-cn/details.aspx?family

Boss's need to put the company WebLogic server by HTTP access mode for HTTPS premises CA certificate issued by itself not by a unified CA Agency applicationFirst, the Environment preparationinstallationJDK(optional)Weblogicafter installation comes withJDKinstallation. If you generate a certificate request directly on the server, go toWeblogicunder installation directoryJDKlocation of the pathbindirectory, r

In my article, I mentioned how to use OpenSSL to export the SSL CA certificate from the HTTPS Web site. This method is not very intuitive, and requires the user to manually copy, and then save as a file, then there is no better and more convenient tool?Fortunately, people in the industry who are enthusiastic about open source projects provide us with a more convenient and simple tool: portecle; Using this tool we can easily export the SSL

Recently hand cheap updated Mac OS Yosemite version of the system, the update later found that some software can not be used, such as the PHP extension of the Redis module, Mou,eclipse and so on, very depressed AH. For the graphical software is good to say to update the new version of the official website, but for the service class is really a headache, who happened today with the GitHub client update code when promptedIt looks good. CA certificate lo

I. OverviewHow to implement "Authentication and data Encryption"Sender:Calculate data eigenvalues--"use private key to encrypt eigenvalues--" randomly generate key pair to encrypt entire data--"using receiver public key encryptionReceiving Party:Decrypt with private key--"decrypt the entire data--" Verify identity with public key--"compare data eigenvaluesWho manages the public key, any data that travels on the internet is unsafe, let alone pass the public key, and if it is tampered with, it can

CA Loves palindromicTime limit:2000/1000 MS (java/others) Memory limit:262144/262144 K (java/others)Total submission (s): 301 Accepted Submission (s): 131Problem Descriptionca loves strings, especially loves the palindrome strings.One day he gets a string, he wants to know how many palindromic substrings in the substring S[l,R] .Attantion, each same palindromic substring can is only counted once.Inputfirst Line contains