OpenSSL is an open source project that provides a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. If you would like to install the development package, which is libssl-dev:

 

 $ sudo apt-get install libssl-dev



 $ openssl version



 OpenSSL 1.0.1f 6 Jan 2014


If it's up to date then nothing will be done, and Then to Install the latest

 

 $ sudo wget -O /tmp/openssl.tgz https://www.openssl.org/source/openssl-1.0.2-latest.tar.gz  

  

 $ sudo tar -zxf /tmp/openssl.tgz -C /tmp  

   

 $ sudo cd /tmp/openssl-*  

  

 $ sudo ./config



 $ sudo make



 $ sudo make test

  

$ sudo make install  



 This will build and install OpenSSL in the default location, which is (for historical reasons) /usr/. If you want to install it anywhere else, run config like this:
 

$ sudo ./config --prefix=/usr --openssldir=/etc/ssl --libdir=lib no-shared zlib-dynamic  



$ sudo make  



$ sudo make test



$ sudo make install  

Finally, check your openssl version.
 

$ sudo openssl version