how to verify ssl certificate openssl

Self-built CA Based on OpenSSL and SSL certificate issuance For details about SSL/TLS, see the SSL/TLS principles.For more information about Certificate Authority (CA) and digital certificate, see OpenSSL and SSL digital certificate

1. After OpenSSL is installed, find OpenSSL. CnF in the/usr/lib/SSL directory (for Ubuntu system, use whereis to check the SSL directory) and copy it to the working directory. 2. Create a New democafolder under the Work directory, create the new

ObjectiveI read a lot of information, only to write this article, if there are errors, please put forward the reader in time.In general, when you use Remote Desktop to connect to Windows Server, there is always a warning prompt, 1Figure 1This

From: http://liujy1111.blog.163.com/blog/static/49739712008842372293/ However, when I follow the steps above, the HTTPS service will not start, and the certificate file will always be prompted that it does not exist or the format is invalid. After a

OpenSSL is an open source SSL implementation. The simplest and most important application based on the OpenSSL directive is to use Req, CAs, and X509 to issue a certificate.OpenSSL provides command-line options and interactive two ways to perform

In HTTPS learning note two, the concept of digital certificates has been clarified, composed and how the client validates the server-side certificate during the HTTPS connection process. This chapter describes how to use the OpenSSL library to

Digital Certificate and its authentication process [reprinted], digital certificate reprinted As we all know, public key cryptography makes it easy to use digital signatures, encrypted communications, and other key services by using the public key

======================================* OPENSSL======================================1. Install OPENSSL and confirm the location of the openssl. cnf file.$ Yum install openssl$ Rpm-qa | grep openssl$ Rpm-ql openssl -*2. Related directory settings,

/*************************************** **************************************** *********** * SSL/TLS client Win32 (based on demos/CLI. cpp) * The dynamic Connection Library libeay32.dll and ssleay. dll must be used, * Add ws2_32.lib libeay32.lib

This error has always occurred when I recently used Ruby libraries.. When using the net/IMAP library or the net/HTTP Library (mainly using HTTPS and HTTPS using SSL), the details are as follows:   Error message: e:/ruby200/lib/Ruby/2.0.0/NET/IMAP.