Install/upgrade OpenSSL under Linux

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Installation Environment:

Operating System : CentOs7

OpenSSL version:openssl-1.0.2j.tar.gz

Installation:

The current version of the latest SSL address is

http://www.openssl.org/source/openssl-1. 1 . 0e . tar.gz

Note: Enter http://www.openssl.org/source/ to view the latest version

1. Place the downloaded compressed package in the root directory,

2, under the folder decompression, command: Tar-xzf openssl-1.0.2j.tar.gz, get openssl-1.0.2j folder

3. Enter the extracted directory: CD openssl-1.0.2j

4, set the OpenSSL installation, ( --prefix ) parameters for the installation of the directory, that is, the installed files will appear in this directory:
Execute command: ./config--prefix=/usr/local/openssl

5. Execute the order./config-t

6. Execute make to compile OpenSSL

Here if the following error occurs

MAKE[1]: Gcc:command not found

I found my installation on the Internet. gcc compiler not in CentOS7

ensure the System network unblocked, execute the command yum-y install GCC (note, must forget the smooth, otherwise not installed)

7. Installing OPENSSL:
Make install

8. Execute the following command

[Email protected]/]# cd/usr/local

[Email protected] local]# Ldd/usr/local/openssl/bin/openssl

A message similar to the following will appear:

9. View the path

...] # which OpenSSL

View version

...] # OpenSSL version

Upgrade:

Upgrade the OpenSSL environment to OPENSSL-1.0.1G

1. View Source Version

[email protected] ~]# OpenSSL version-a

OpenSSL 0.9.8e-fips-rhel5 Jul 2008

2, download Openssl-1.0.1g.tar.gzwget http://www.openssl.org/source/openssl-1.0.1g.tar.gz3, update Zlibyum install-y zlib4, Unzip install tar zxf openssl-1.0.1g.tar.gzcd openssl-1.0.1g./config shared Zlibmakemake installmv/usr/bin/openssl/usr/bin/ Openssl.bakmv/usr/include/openssl/usr/include/openssl.bakln-s/usr/local/ssl/bin/openssl/usr/bin/opensslln-s/ Usr/local/ssl/include/openssl/usr/include/opensslecho "/usr/local/ssl/lib" >>/etc/ld.so.confldconfig-v5, See if the upgrade was successful

[email protected] ~]# OpenSSL version-a

OpenSSL 1.0.1g 7 APR 2014

Install/upgrade OpenSSL under Linux