Tagged: Security


Trusted certificates for free – StartSSL

How many times did you see a pop-up message “Security certificate of this site is not trusted!”? We are used to it, and most of people even don’t check who is Certificate Authority and...


Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways. It provides a number of utilities including a flexible and scalable multi-threaded daemon, a command...

GnuPG for Windows or Gpg4win

Gpg4win (GNU Privacy Guard for Windows) is an encryption software for files and emails.

What is Gpg4win?

Gpg4win enables users to securely transport emails and files with the help of encryption and digital signatures. Encryption protects the contents against an unwanted party reading it. Digital signatures make sure that it was not modified and comes from a specific sender.

The GNU Privacy Guard (GnuPG)

Sometimes you need to encrypt some files or messages to prevent accessing them by unathorized persons. There are several standards and software for this purpose, but the most popular standard that adopted on the...


The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general
purpose cryptography library.
The project is managed by a worldwide community of volunteers that use the Internet to communicate, plan, and develop the OpenSSL toolkit and its related documentation.


Some of basic informations, from http://www.gnupg.org/ site:

GnuPG is the GNU project‘s complete and free implementation of the OpenPGP standard as defined by
RFC4880. GnuPG allows to encrypt and sign your data and communication, features a versatile key managment system as well as access modules for all kind of public key directories. GnuPG, also known asGPG, is a command line tool with features for easy integration with other applications. A wealth of frontend applications and
libraries are available. Version 2 of GnuPG also provides support for S/MIME.

GnuPG is Free Software (meaning that it respects your freedom). It can be freely used, modified and distributed under the terms of the GNU General Public License.

GnuPG comes in two flavours:
1.4.10 is the well known and portable standalone version, whereas
2.0.15 is the enhanced and somewhat harder to build version.

Project Gpg4win provides a Windows version of GnuPG. It is nicely integrated into an installer and features several frontends as well as (German) manuals.

Project Aegypten developed the S/MIME functionality in GnuPG 2.


Dice Logo

“This page offers a better way to create a strong, yet easy to remember passphrase for use with encryption and security programs. Weak passwords and passphrases are one of the most common flaws in computer security. Take a few minutes and learn how to do it right. The information presented here can be used by anyone.”

This is cite from original home page of Diceware Passphrase: http://world.std.com/~reinhold/diceware.html


The GNU Privacy Guard

GnuPG jest kompletną i bezpłatną implementacją standardu OpenPGP zdefinowanego przez RFC4880. GnuPG pozwala szyfrować i podpisywać dane i korespondencję, posiada możliwości elastycznego zarządzania systemem kluczy oraz moduły dostępu do każdego typu katalogów kluczy publicznych. GnuPG znane również jako GPG jest narzędziem powłoki, które posiada zdolność łatwej integracji z innymi aplikacjami. Dostępnych jest wiele frontendów i aplikacji wykorzystujących biblioteki. GnuPG w wersji 2 dostarcza również wsparcia dla standardu S/MIME.