ocsp stapling

of the authentication organization can ensure the authenticity of the certificate information. The complete PKI system should have the CA (Certificate Authority), the certificate registration system (RA), and the key management center (KMC) certificate publishing Query System and Backup recovery system. Ca is the core of PKI and is responsible for issuing and canceling all digital certificates. Ra accepts and reviews users' certificate applications, such as certificate cancellation and restora

for issuing and canceling all digital certificates. Ra accepts and reviews users' certificate applications, such as certificate cancellation and restoration applications; KMC is responsible for the generation, storage, management, backup, and recovery of encryption keys. The certificate publishing and query system generally uses the OCSP (Online Certificate Status Protocol, Online Certificate Status Protocol) Protocol to query User Certificates, the

.png "alt=" Wkiol1ucvjddbpkpaaouysyaksi976.jpg "/>Then follow the wizard and click Next until the configuration is complete.650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/5B/3B/wKiom1UCVWeAMbKDAANRNuf5oKs789.jpg "title=" QQ picture 20150313111035.png "alt=" Wkiom1ucvweambkdaanrnuf5oks789.jpg "/>After you configure the Online Responder, log on LON-DC1 Open the Certification Authority console and open the Properties page for ADATUM-ISSUINGCA650) this.width=650; "src=" Http://s3.51cto.c

specified time interval. In practice, this process works well, but there are some scenarios in which the CRL mechanism may be flawed: More and more revocation means that the CRL list is only getting longer, and each client must get the entire list of serial numbers There is no certificate revocation instant notification mechanism-if the certificate is revoked during client caching, the client will assume that the certificate is valid until the cache expires. Online Certificate

. Wildcard certificates (wildcardcertificates) have their application scenarios, but should be avoided, as the use of the words implies exposure to many people. In other words, fewer people can access the private key the better. 1.4 obtain a certificate from a trusted CA Choose a reliable CA (certificateauthority) that treats security more seriously, and consider the following factors in choosing a CA:* attitude towards safety Most CAS will have regular security audits, but some will be more c

sure that the new version uses the same package ID as the replaced application. And tell the user not to delete their previous versions before installing the new version. The new version replaces the old version and retains the data stored on the device, provided that the package ID number must match.Certificate verificationWhen the application is enabled on the device for the first time, it is verified by assigning a certificate to the Apple OCSP se

); } byte hash[] = Messagedigest.digest (); Calendar cal = Calendar.getinstance (); byte[] OCSP = null; if (This.signerKeystore.getChain (). Length >= 2) {String URL = pdfpkcs7.getocspurl ((x509certificate) THIS.S Ignerkeystore.getchain () [0]); if (URL! = null url.length () > 0) OCSP = new Ocspclientbouncycastle ((x509certificate) this.signerKeystore.getChain () [0], (x509c

How to Use the SARG log analyzer on CentOS to analyze Squid logs In the previous tutorial, we showed you how to use Squid to configure transparent proxy on CentOS. Squid provides many useful features, but it is not straightforward to analyze an original Squid log file. For example, how do you analyze the timestamp and number in the following Squid log? 1404788984.4291162172.17.1.23 TCP_MISS/302436 GET http://facebook.com/-DIRECT/173.252.110.27 text/html 1404788985.04612416172.17.1.23 TCP_MISS

online certificate status certification of a server, and Ca/pki high correlation 4. The following ca/pki is studied, and it is found that OCSP is a service for replacing CRLs (certificate revocation lists) for real-time querying of status information for certificates. Reference Link: http://umtiger.blog.sohu.com/153079434.html Http://baike.baidu.com/link?url=hZr8C1eJAnaPq3G4nAIJBPswznRcdX5nwYt7GvTQbpKCeZgxJPgRANZdZSYIfekZuhX8QQmPFlveqoyWDYEX

the client encryption authentication, we used a simple script to help us quickly generate a variety of certificates and visas, eliminating the memory cumbersome OpenSSL command line, simplified use. This is, of course, a minimum available set, and many improvements may be required when the scale is large, such as a Web UI that joins a CA, direct operation of visas and revocation of certificates, and the ability to automatically restart Nginx. Again such as the CRL this static configuration file

certificate can be signed by an authenticated authority (CA.Certification Authority acts as a trusted third party in the digital security field. It is very difficult to prove the identity of an entity in the online field to take over this challenge. They provide proof of identity for users who have purchased or signed the certificate. Therefore, to trust a certificate, you only need to trust the Certificate Authority. You can use a ca-based trust certificate to demonstrate your trust in the aut

domain, certification authority takes over the challenge. they provide proof of identity for those who purchase or sign the certificate. therefore, to trust a certificate, the user only needs to trust the certificate authority. users demonstrate their trust in the certification authority by owning and using the CA's trust certificate. verisign and Thawte are very well known for their certification authority. If the security of a certificate has been compromised, the certificate is discarde

Today, IE 8 beta2 was released and installed on your computer as soon as possible. It feels good, but when a new tab is opened or a tab is closed, IE8 keeps crash (but now IE8 is no longer like IE7, the crash of a tab will destroy the entire ie .) All add-on in IE is disable. -------- Separation line learned from izao newspaper ----------- In the first article, I talked about how to use feature stapling to customize the website initialization proc

extension debug callback */ Void (* tlsext_debug_cb) (SSL * s, int client_server, int type, Unsigned char * data, int len, Void * arg ); Void * tlsext_debug_arg; Char * tlsext_hostname; Int servername_done;/* no further mod of servername 0: call the servername extension callback. 1: prepare 2, allow last ack just after in server callback. 2: don't call servername callback, no ack in server hello */ /* Certificate status request info */ /* Status type or-1 if no status type */ Int tlsext_status_

matters worse, many browsers will try to circumvent the problem in order to "perform better". So the lack of intermediate certificate has been there, has not been found, and the speed of the program calls always go up, and even a certain chance of error (I have encountered this strange problem). If the certificate chain is fully configured, also pay attention to the size of the certificate chain. Some Web sites have full certificates that are unusually large, reaching several KB or even dozens

name and e-mail address). This certificate is placed in the browser and is checked by the server each time it connects to the server.7. When the private key is compromisedThe certificate can be revoked before it expires, usually because the private key of the certificate has been compromised. Newer browsers such as Google Chrome, Firefox[7], Opera[8], and Internet Explorer [9] running on Windows Vistaimplement the online certificate Status Protocol ( English :Online Certificate Status Protocol)

directory to generate two programs Nsca Send_nsca (main program), Sample-config will have nsca.cfg and send_nsca.cfg (configuration file). 2, modify the configuration file # CP src/send_nsca/usr/local/nagios/bin/# CP sample-config/send_nsca.cfg/usr/local/nagios/etc/# chown Nagios.nagios/usr/local/nagios/bin/send_nsca# chown Nagios.nagios/usr/local/nagios/etc/send_nsca.cfgModify the Send_nsca.cfg configuration and change the password. # vi/usr/local/nagios/etc/send_nsca.cfgpassword=123456The

describe the content and purpose of a digital certificate. When requesting a certificate from an enterprise CA in a domain environment, the applicant for the certificate selects multiple certificate types from the certificate template, such as the user type and the code signing type, based on the permissions that he has. Certificate templates allow users to determine the type of certificate they need from a low-tech perspective, and it also allows the administrator to differentiate what roles c

directory ).10) HMAC (crypto/HMAC directory) implements MAC Based on symmetric algorithms.11) the hash table (crypto/lhash directory) implements the hash table data structure. In OpenSSL, many data structures are stored in a hash. For example, configuration information, SSL session, and ASN.1 object information.12) digital certificate online authentication (crypto/OCSP directory), implements OCSP protocol

this way, we will start firefox when entering firefox on the terminal. 5. Add a desktop shortcut so that you can click and use it on the desktop. For more information, see how to create a shortcut in CentOS6.5 install eclipse. Adobe flash player Installation Bytes 1.download install_flash_player_11_linux.x86_64.tar.gz 2. Extract 1 tar -zxvf install_flash_player_11_linux.x86_64.tar.gz After decompression, three files (Everything is file.w.libflashplayer.so,readme.txt, usr (di