Hello,
The installer performs several pre-checks before the actual install takes place. The standard installer checks as follows:
1) Oracle Java 1.5+ version MUST be installed with superuser privileges.
2) Unlimited Strength Java Cryptography Extension policy files must be installed and its version should match with Java version.
3) To use the graphical interface, User also MUST install an X11 environment. X11 lib is optional if User installs with install.sh(recommended), but mandatory if User runs manual installation with sepui-*.rpm(deb).
4) To install on 64bit OS, User needs to install i686-based dependency packages:
First Download and install Oracle Java (recommended version 8)
http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html
Agree to Oracle Binary Code License Agreement.
Download the appropriate x86 or x64 version in .tar.gz or .rpm as appropriate.
If using .rpm install via rpm command:
# rpm –ivh jre-8u65-linux-x64.rpm (for an example)
If using .tar.gz, extract contents to /usr/java then update alternatives.
# tar –xf jre-8u65-linux-x64.tar.gz
# mv jre1.8.0_65 /usr/java
# update-alternatives --install "/usr/bin/java" "java" "/usr/java/jre1.8.0_65/bin/java" 1
# update-alternatives --set java /usr/java/jre1.8.0_65/bin/java
Download and replace the Unlimited Strength Cryptography (JCE) files
http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
Extract contents and copy to /lib/security.
# unzip jce_policy-8.zip
# cd UnlimitedJCEPolicyJDK8
# cp local_policy.jar US_export_policy.jar /usr/java/jre1.8.0_65/lib/security
32-bit Libraries
X64 based systems require 32-bit libraries be installed as SEP for Linux is 32-bit.
For Ubuntu-based distributions: sudo apt-get install libx11-6:i386 libgcc1:i386 libc6:i386
This will install X11 (if needed) as well as the compiler libraries.
Hope that helps.
Cheers!!