 |  | Products -> Lizard Safeguard PDF Security -> Technical information |  |
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PDF SECURITY TECHNICAL INFORMATION
OPERATING SYSTEMS SUPPORTED Windows 2000 with service pack 3 or above
Windows 2003
Windows XP
Windows Vista
Mac OSX 10.4 and above
FILE SIZE SUPPORTED Maximum single file size that can be protected is 200MB.
SERVER REQUIREMENTS (FOR OWN SERVER HOSTING) The Lizard Safeguard administration system can be installed on either a Linux, Unix, or Windows 2003 server.
Linux Server running Red Hat, Suse, or Fedora with Apache, and MySQL 4.1 or above.
Unix Server running FreeBSD with Apache, and MySQL 4.1 or above.
Windows 2003 Server or above with MySQL 4.1 or above and SendMail or a similar program for sending emails installed (e.g. MS Exchange).
Intel Celeron 2.0 GHz or higher, 512 MB DDR RAM, 40 GB IDE hard drive (minimum spec).
The server must be capable of having Java JDK and Apache TomCat installed on it. Supported versions are:
- JDK version 1.5 and above
- Apache Tomcat 5.0.28 and above
- MySQL 4.1 and above
Full root access is required.
A Domain name must be assigned to the server.
PDF SECURITY PLUG-INSWe do not use Adobe's implementation / Security Handler / Adobe plug-in for protection of your PDF documents. Read this article published by Bryan Guignard, an Adobe Certified expert as to why.
LockLizard security cannot be compromised by plug-ins because we prevent all plug-ins from being loaded so that no vulnerabilities can be introduced.
See PDF Security Plug-ins for further information.
See PDF Security flaws and cracks for a list of poor PDF security implementation vulnerabilities, flaws and cracks.
PDF ENCRYPTION Documents are protected using the FIPS approved algorithm, AES at it's strongest strength, 256 bit. For more information on the AES alogrithm see FIPS-197.
PDF DECRYPTIONDocuments are decrypted on-the-fly into memory, entirely under our own control.
Decrypted information is never stored to disk in temporary files or in the Windows swap file.
We do not rely upon other implementations (including Adobe's), or plug-ins that can be subverted, or just clash with plug-ins provided by other suppliers.
PUBLIC KEY TECHNOLOGYWe use strong public key technology rather than weak password mechanisms that are easily crackable. Since there are no passwords to enter the system is not vulnerable to password attacks. Decryption keys are transparently relayed to the client computer and stored in encrypted format. There are no passwords to enter, manage, compromise, forget or pass on to others.
All communication between the client and the server is encrypted in order to prevent an attacker from being able to observe the secure exchanges between the client and the administration system. This avoids the possibility of theoretical attacks where the attacker may observe in excess of 1.5 million messages.
KEY MANAGEMENTWhilst we use public key technology, no key management is required by you as the publisher or by your customers, as it is all handled transparently by the licensing system. There are no certificates to revoke when you want to terminate a customers access or any other PKI complexity.
LICENSE CONTROLWe do not create extra files on disk that can be copied to another computer along with the protected PDF files so they can be easily shared and viewed.
See also Our Technology on how the licensing system prevents your customers sharing their registration information and Features in Depth.
Technology that LockLizard uses in our PDF document security software include encryption and DRM controls. Lizard Safeguard provides PDF document security with PDF DRM controls. | |
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