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Small black daily tossing-quick creation of shell scripts for private CA Tom started to make new things again. He just learned how to build a private CA through openssl last week and spent some time writing this script on Saturday. After that, he went to renew DNS, if you have any bugs, please forgive me. This script is purely an exercise for practicing openssl, awk, sed, and other knowledge points. First,
Build your own certificate issuing service (CA) This series of articles is divided into three parts. It mainly introduces how to build your own certificate issuing service, generate certificate requests, and sign the generated certificate request through the self-built CA and finally apply it to the service. By building your own certificate service, you can sign your own application certificate without buyi
online12. Do the log, often do analysisAnother implementation of the SSH protocol: dropbear(1) dropbearkey-t rsa-f/etc/dropbear/dropbear_rsa_host_key-s 2048Dropbearkey-t dss-f/etc/dropbear/dropbear_dss_host_keydropbear-p [Ip:]port-f-EOpensslThree components:OpenSSL: Multi-purpose command-line tools:Libcrypto: Cryptographic Decryption LibraryImplementation of the LIBSSL:SSL protocolPki:public Key InfrastructureCA: Issuing agencyRA: Registration AuthorityCRL: Certificate Revocation ListCertificat
Idle boring, so is to use Keytool to create a certificate, and submitted to the CA to obtain a free 30 days certification, but the final import certificate when the report Keytool error:java.lang.Exception:Failed to establish chain from reply Keytool Error: Java.lang.Exception: Unable to establish a link from the reply. To create a Keytool article see: http://www.chinaunix.net/jh/13/456376.html, note that the certificate name imported in step fifth is
period of time randomly. The time value is obtained through the exponential backoff algorithm. If the attempt fails several times, stop sending and send the notification to the upper layer. The following describes the basic process of the Binary Index Backoff Algorithm: 1. determine the basic backoff time unit (2 TB). For Ethernet, It is 51.2us 2. Define a parameter K. The relationship between it and th
Apache + ssl + ca, apachesslStep 1: Set up an apache server. In the previous blog, you have completed the installation of SSL at http://www.cnblogs.com/sangmu/p/6422238.html #: yum install mod_ssl -y iptables -I INPUT 1 -p tcp --dport 443 -j ACCEPT service iptables save 1 vim/etc/httpd/conf. d/ssl. conf 2 3 Listen 443 // The listening port number 4 So far, ssl installation is complete. Step 3: Install
other parties except the sender and recipient (confidentiality), and that information is not tampered with during transmission (integrity and consistency ); the sender is sure that the recipient is not a fake (the authenticity of the identity and cannot be faked); the sender cannot deny his/her sending behavior (non-repudiation ). (2) Ca ArchitectureThe main tool for C
consists of four parts: Certificates in the form of X-V3 and certificate revocation List CRL (V2), CA operation Protocol, CA Management Protocol, CA policy development. A typical, complete, and effective PKI application system should have at least the following five parts:(1) Certification Center CACA is the core of PKI, CA
serial number (certificate serial number issued by The CA)Crlnumber = $ dir/crlnumber # the current crl number (certificate serial number revoked)# Must be commented out to leave a V1 CRLCrl = $ dir/my-ca.crl # The current CRL (Certificate Revocation List)Private_key = $ dir/private/my-ca.key # The private key (CA private key file)RANDFILE = $ dir/private/. rand # private random number fileX509_extensions
1.A and B transfer data via SSL approximate processPrivate key encrypted data can only be decrypted by its own corresponding public key.The CA Visa authority first sends itself a certificate, a publicly recognized institution,The communication data between a B is encrypted by the private key generated by itself.First, a the public key of their name and address is sent to the CA, the data is called AA,The
Web Recently due to work, the need to build a local server, and then in C + + as the client, HTTPS protocol with the server for data interaction. I have been engaged in C + + development, on the Java EE, WebLogic and other related content is not familiar with, so the content of the server configuration completely dependent on the online data. Search on the Internet a lot of relevant information, and finally toss most of the genius to fix, in order to let a novice like me no longer suffer toss, w
To create a private CA:OpenSSL configuration file:/etc/pki/tls/openssl.cnf(1) Create the required files# Touch Index.txt# echo > Serial#(2) CA self-signed certificate# (Umask 077; OpenSSL Genrsa-out/etc/pki/ca/private/cakey.pem 2048)# OpenSSL Req-new-x509-key/etc/pki/ca/private/cakey.epm-days 7300-out/etc/pki/
Recently beans need to clean up the company's PKI server. Due to historical reasons, the company before the intranet built 2 enterprise root level of the CA server, the boss let me build a new, and then the previous 2 to dispose of. Microsoft's ad environment is allowed to build multiple PKI structures at the same time, but the result is that it is possible for t
the scrambling sequence into shorter information blocks. Acceptor: combines the received control word and the initial modifier into the initial word. the pseudo-random generator sent to the decoder can obtain the same pseudo-random sequence as the sending end, this allows you to obtain transparent transmission streams. The control word is usually 69 bytes, and the change frequency is 2 S/time to 10 S/time. 2
solution; (2) Issuing Certificates from intermediate Root Certificates of your own brand can not only promote your own brand, but also protect your brand websites from counterfeiting. For example, if the certificate deployed on the website is not issued by the enterprise's intermediate root certificate, the website must be a fake website and its certificate must be fake; google directly blocks websites that have deployed certificates not issued from
If the site is for intranet access, build the CA server to issue certificates, if it is for the Internet to access, or to buy SSL certificate is better, today to introduce themselves to build CA server issued a certificate to do encrypted Web site.192.168.10.187 CA Server192.168.10.190 Web Server(1) Build CACd/etc/pki/caCreate serial and Index.txt two files in th
the user's identity on the Internet. The CA is also responsible for blacklisting and publishing the user certificate. A detailed description of the CA is provided later.2) The X.500 Directory Server X.500 Directory Server is used to publish user certificates and blacklist information. Users can use the standard LDAP protocol to query their own or others' certifi
story can not be said to go bird. ◇ introduction of referral to intermediary agenciesOK, back to the topic. If and B company has business dealings with a lot of companies, each company's official seal are different, the front desk will know how to distinguish all kinds of seal, very troublesome. So, there is an intermediary company C, found this opportunity. C Company has opened a special "Agent seal" business.In the future, a company's salesman to B company, need to bring
authentication of the private CA. Preparatory work: Two hosts, one to do CA (172.16.13.1), one to do the Web server side (172.16.13.2). [Note--172.16.13.2 host must be configured to complete the Web server] Steps: The production of CA certificate (on CA's host) 1, to see if the installation of OpenSSL software # Rpm-qa OpenSSL
first create a private on the other host CaIf I were to open a different virtual machine now,Log inOne, surviving a pair of keys (the private key and the public key, the public key can be extracted in the private key so that the private key is created)[[Email protected] ~] #cd/ETC/PKI/CA[[Email protected] ca]# (umask 077; opensslgenrsa–out PRIVATE/CAKEY.PEM 2048)second, the generation
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