OpenSSL Upgradation Procedure:

Every linux operating system comes with a OpenSSL version. But if you want to upgrade it to the lates version then follow the following steps:–

[ steps described above is tested on CentOS 5 (Stable) ]

Steps for upgradation of OpenSSL:——

• Remove the previous versions of OpenSSL using the following command:

#rpm -erase –nodeps openssl

• Fetch the latest version of openssl from http://openssl.org/source. [Latest version is openssl-0.9.8k]
• Unzip the tar file to /usr using the following command:

#tar -zxvf -C /usr openssl-0.9.8k.tar.gz

• Move to the /usr/openssl-0.9.8k directory

#cd /usr/openssl-0.9.8k

• Install the OpenSSL using the following commands:

<#./config shared

#make

#make test

#make install

• Link the new files using the following commands:

#cd /lib

#ln -s /usr/openssl-0.9.8k/libssl.so.0.9.8 libssl.so.0.9.8b^†

#ln -s /usr/openssl-0.9.8k/libssl.so libssl.so.6^†

#ln -s /usr/openssl-0.9.8k/libcrypto.so.0.9.8 libcrypto.so.0.9.8b^†

#ln -s /usr/openssl-0.9.8k/libcrypto.so libcrypto.so.6^†

#cd /usr/lib

#rm /libssl.so

#rm /libcrypto.so

#ln -s /usr/openssl-0.9.8k/libssl.so libssl.so

#ln -s /usr/openssl-0.9.8k/libcrypto.so libcrypto.so

#ln -s /usr/local/ssl/include/ /usr/include/ssl

#cd /usr/include

#rm -rf openssl

#ln -s /usr/local/ssl/include/openssl openssl

• Rerun ldconfig
• Perform the following steps:

#cd /etc

#rm ld.so.cache

Open the ld.so.conf file in vi editor and add the following lines:

-         add /usr/local/ssl/lib

-         add /usr/local/lib

Run ldconfig.

• Change the Environment Path Variable

Open .bash_profile file in vi editor

#vi /root/.bash_profile

Add the following line before export PATH

PATH=$PATH:/usr/openssl-0.9.8k/apps

Save the file end exit from vi editor.

• Reboot.
• Done

_{† the symbolic file name may be different depending on the operating system and different version of OpenSSL.}