- Category : Linux Helpline (Easy Guide)
- Posted on : Mar 17, 2019
- Views : 2,116
- By : Marcus J.
OpenSSL is a library that provides cryptographic functionality, specifically SSL/TLS for popular applications such as secure web servers, MySQl databases and email applications. The list parameters standard-commands, digest-commands, and cipher-commands output a list (one entry per line) of the names of all standard commands, message digest commands, or cipher commands, respectively, that are available in the present openssl utility.
You may need an operating system RHEL 7 or Centos 7 in your dedicated or vps server. Please make sure to set a hostname for your server and its dns is pointing to the IP address of the server.
Get the current version with “openssl version” and “yum info openssl” command :
# openssl version OpenSSL 1.0.1e-fips 11 Feb 2013
You can also check the available version in the vendors directory too.
# yum info openssl Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.ratiokontakt.de * epel: mirrors.n-ix.net * extras: mirror.de.leaseweb.net * updates: mirror.softaculous.com Installed Packages Name : openssl Arch : x86_64 Epoch : 1 Version : 1.0.1e Release : 51.el7_2.1 Size : 1.5 M Repo : installed From repo : updates Summary : Utilities from the general purpose cryptography library with TLS : implementation URL : http://www.openssl.org/ License : OpenSSL Description : The OpenSSL toolkit provides support for secure communications : between machines. OpenSSL includes a certificate management tool : and shared libraries which provide various cryptographic : algorithms and protocols. Available Packages Name : openssl Arch : x86_64 Epoch : 1 Version : 1.0.1e Release : 51.el7_2.2 Size : 711 k Repo : updates/7/x86_64 Summary : Utilities from the general purpose cryptography library with TLS : implementation URL : http://www.openssl.org/ License : OpenSSL Description : The OpenSSL toolkit provides support for secure communications : between machines. OpenSSL includes a certificate management tool : and shared libraries which provide various cryptographic : algorithms and protocols.
To download the latest version of OpenSSL, do as follows:
# cd /usr/local/src # wget https://www.openssl.org/source/openssl-1.0.2-latest.tar.gz # tar -zxf openssl-1.0.2-latest.tar.gz
To manually compile OpenSSL and install/upgrade OpenSSL, do as follows:
# cd openssl-1.0.2a # ./config # make # make test # make install
If the old version is still displayed or installed before, please make a copy of openssl bin file :
# mv /usr/bin/openssl /root/ # ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl
Now verify the OpenSSL version.
# openssl version OpenSSL 1.0.2e 3 Dec 2015
Note: Compiling Openssl major version may case issues with other system binaries. So please do the needfull to avoid the corruptions.
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