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GPG and PGP are two types of encryption software that you can use to spread your files securely through the public key. I used the GPG a few days ago, feel very convenient, use also encountered some problems. So my use after writing out, the purpose is to make the first use of GPG friends less detours. First say GPG get it, GPG is open source software, is completely free, you can download to www.gnupg.org. If you are using a mandrakelinux or Debian release, you can download it directly. I am using Mandrak ...

Due to the application of VoIP, the firewall market will be completely changed. New research shows that institutions underestimate the need for companies to increase VoIP security capabilities based on existing firewalls, and that these requirements are changing the pattern of the firewall market. Due to the application of VoIP, the firewall market will be completely changed. New research shows that institutions underestimate the need for companies to increase VoIP security capabilities based on existing firewalls, and that these requirements are changing the pattern of the firewall market. INSTAT, a market research firm based in Arizona, State Scottsdale, this year ...

IT managers should not assume that because their data networks are protected, it is safe to add voice to their systems. Imagine a situation in which an intruder enters your VoIP network unnoticed, starts monitoring any conversation he chooses, extracts sensitive information, company secrets, and even details that can be used to blackmail the CEO. Last month, ISS (Internet security Bae) issued a warning alerting users to the existence of a security vulnerability in Cisco's VoIP products that is likely to occur. According to the ...

Using GPG is very simple, it is a command-line based tool that is primarily used to encrypt files 1. Generate keys you must generate a pair of keys before using GPG. [Root@tipy root]$ GPG--gen-key After this, you will be asked which encryption method to choose Das and Eigamal, Das, Eigamal. The first is the default, which includes all the attributes of the GPG. Generally we all choose it. Next it will ask you for the keysize you want, the default key ...

With the continuous expansion of data network bandwidth, hundreds of megabytes or even gigabit to the desktop has become possible. The increase in bandwidth also provides a powerful prerequisite for transmitting voice over the data network. At the same time, VoIP technology is increasingly mature, similar to voice compression, QoS quality assurance, such as the topic has been widely discussed and reached a consensus. It can be said that VoIP technology has been from the original experimental nature of the real specificity for the mature commercial applications. With the continuous expansion of data network bandwidth, hundreds of megabytes or even gigabit to the desktop has become possible. The increase in bandwidth also provides a powerful prerequisite for transmitting voice over a data network.

Recently, various broadband service providers are increasingly offering VoIP services to their users, including ordinary consumers and business users. If the previous provision of such services is in the process of trial and trial, then the real acceleration has now begun. As the integration and acquisitions between the network and traditional voice service providers are completed, the trend of acceleration will be maintained and even faster. Many broadband services are now increasingly being built around VoIP, and from the architecture of the network, many experts believe that future VoIP will become the main provider of voice services ...

As an important means of protecting information confidentiality, integrity and non-repudiation, encryption and digital signature are widely used in various information and communication situations. At present, there are many commercial encryption and digital signature products, such as commercial software PGP (pretty good Privacy). In addition, there are free encryption and digital signature software in the open source repository, the most recognized being GPG (GNU Privacy Guard). GPG is a completely free, source-code-compliant software product that is completely compatible with PGP. Today, GPG has ...

Phil Zimmermann, who was previously famous for writing pretty-Privacy email encryption, hopes that the newly completed secure Internet telephony program is as popular as the user's. Zimmermann has developed a prototype of an Internet telephony application that can encrypt calls and eliminate eavesdropping. He plans to release the prototype program July 28 at the black Hat briefings Information security conference in Los Angeles. "I'm releasing this program because I want to help shape secure Internet telephony (VoIP) ...

As IP Voice (VoIP) technology continues to spread across the global telecommunications market, performance improvements, cost reductions, and functional support for service providers, device manufacturers, and end-users make VoIP an attractive thing. With increasing interest in VoIP, the security of voice communications is likely to evolve into a key requirement for VoIP solutions. Packet-based communications are particularly vulnerable to security risks, including packet monitoring of voice "eavesdropping", the use of unpaid service to forge network IDs, and manipulation of data packets.

The DES (data encryption Standard) algorithm, which was formally licensed by the United States Government in 1977, is a method of encrypting 64-bit data with a 56-bit key. Des algorithms are applied to many situations where security encryption is required. (for example, the UNIX cipher algorithm is based on the DES algorithm). Here is a description of how to implement the DES algorithm language, if you want its source code, you can go to the http//assassin.yeah.net download, the latter you have any questions can also write to me (as ...)

Currently, VoIP faces security issues of four main: blocking service (DoS) attacks, illegal access, charges fraud or eavesdropping threats. VoIP protocol security is not negligible pain. Information security experts will warn you that if you do not deploy VoIP properly, Internet telephony will be attacked by hackers and malicious code. VoIP can disrupt the security of the network, especially for corporate networks, because companies are eager to deploy this technology and ignore security. Careful analysis can be seen, VoIP first to face the security problem is the lowest ...

1. First we want to see if the current Linux system has GNUPG software, for Red Hat linux7.0 version will automatically install the software, we enter the following command to see if the machine is installed Linux$rpm-qa│grep GnuPG Gnupg-1.0.4-11 from above can be seen that the package has been installed, if not installed, please follow the instructor's instructions to install 2. After installing the GNUPG package, what we need to do is to generate a pair of key linu ...

GPG, the GNU Privacy Guard, is a non-commercial version of cryptographic tool PGP (pretty), which is used to encrypt and authenticate emails, files, and other data to ensure the reliability and authenticity of communication data. This article will introduce the GPG technology and related tools, designed to help online surfers "sincere" communication. First, PGP overview before introducing GPG, let's take a look at the basic principles and application rules of PGP. Like many encryption methods, PGP uses double keys to ...

----Windows (Internet Explorer)-built encryption system works very much like pretty good Privacy (PGP), which uses a long enough key to discourage the FBI, NSA, and aft. But PGP is more secure than a built-in encryption system in Windows. PGP has no system back door to find, without decryption, no one can read the user's message. In addition, PGP is easy to use and can be used as Outlook, Ou ...

On the security issues in the e-mail system, the current more commonly used PGP technology, in addition, has become the Internet standard of PEM technology. PGP (Pretty-Privacy) was developed by Zimmermann in 1995. It is a complete e-mail security package that includes technologies such as encryption, authentication, electronic signature, and compression. PGP does not use any new concepts, it simply combines existing algorithms such as MD5, RSA, and idea. Due to include the entire source program ...

E-Mail has become the most convenient way of communication in the Internet age, because of the freedom of the Internet, so the security of the mail is becoming more and more prominent. Today, with the popularity of the Internet, e-mail is becoming more and more popular, open a book or magazine newspaper, have an e-mail address, even the ads are marked with e-mail address; this has become a fashion, the most convenient way to communicate in the Internet era, save money, fast. It is because of the freedom of the Internet, so the security of the message is increasingly prominent. e-mail Message delivery, general ...

Recently, many netizens asked about the problem of PGP encryption, one answer on the headache, so the temporary first written a PGP picture tutorial, first muddle through, hehe. Since many netizens use the bat! Software, so here's the bat! v1.53d (Super Cat Chinese version) as an example, introduces the use of PGP. First, please go to www.pgpi.org to download PGP6.5.8 (this version is the latest Open-source version of PGP and the bat! Support the latest version), do not go to download the 7.0 version, the ...

As a basic technology, data encryption is the cornerstone of all communication security. The process of data encryption is implemented by various encryption algorithms, which provide great security protection at a very small cost. In most cases, data encryption is the only way to ensure information confidentiality. According to incomplete statistics, so far, the public has published a variety of encryption algorithms up to hundreds of kinds. These encryption algorithms can be divided into conventional cryptographic algorithms and public-key cryptography if they are classified according to the same key. In a regular password, the recipient and originator use the same key, that is, the encryption key and decryption key is ...

PGP is the abbreviation of "Prettygood Privacy". Mainly from MIT, has run in MSDOS, Unix, VAX and other different types of operating system versions. It is based on the "Public key" (Rsapublic key) encryption technology, so that people can safely transmit confidential information through the public channel. One, single key and public key traditional cryptographic techniques use a single key, meaning that encryption and decryption are the same key. In this way, in ...

Internet users send and receive emails via web pages called Webmail. Compared with the use of special mail transceiver programs, such as OutlookExpress, The_bat, Webmail has the advantage of convenience at the same time, there are a lot of security risks. This article on these security risks and countermeasures to discuss, I think, whether for ordinary webmail users, or webmail system providers, have a certain reference significance. Introduction Whether it is abroad Hotmail, Yahoomail, also ...