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SSL, set, and PGP are the most commonly used encryption methods on the Internet (i), and they have a large user base within their scope of application. This article will introduce the three popular encryption methods in detail. The SSL (secure Socket Layer) SSL protocol, first published by Netscape, is a secure transport agreement for network data, with the primary purpose of providing a secret and reliable connection between two communications. The protocol is made up of two layers, and the bottom layer is SSL on a reliable transport protocol (for example, TCP) ...

Why do you need PGP? Copyright 1996 by Chen Tai-wei [Chen Tai-wei]------------------------------------------------------------------------------- -perhaps you would think that using these confidential programs or systems would make people feel a bit paranoid (paranoid schizophrenia)? To make a reality of

PGP 5.5.3i for Windows General Operations PGP for Windows typically operates in two ways, with a pair of file content that is achieved with the Copy/paste feature of the ClipBook, and the right mouse button activates the PGP function. Details are as follows: (a) ClipBook (copy/Post) when PGP is installed, PGP is automatically activated. and a small symbol such as "498" this.width=498 on the right side of the status column below Windows appears;

Certification (authentication) means that the user must provide proof of who he is, an employee, an agent of an organization, a software process (such as a stock trading system or a software process for a Web ordering system). The standard method of authentication is to figure out who he is, what characteristics he has, and what he knows to identify his things. For example, the system stores his fingerprints, and when he accesses the network, he must provide his fingerprints on an electronic fingerprint connected to the network (which prevents him from using fake fingerprints or other electronic information spoofing systems) and allows him to access the system only if the fingerprint matches. More ...

The simplest way to compromise is to have your password written somewhere, and there is no guarantee that no one else can see it except you. If someone gets your password and your private key file, the entire encryption system will be silent. Another old topic is the password not too simple, note that PGP is "password" passphase, rather than "password" password that is, you can include multiple words and spaces in the password. A wily attacker may use a famous book to find your password. So in order to get a good and difficult to guess password, you can sporogenous some sentences or find ...

Install as mentioned please download the file: Pgp553i-win95nt.exe. Then directly executed, you can enter the PGP program installation screen, please follow the instructions on the screen, we will be more important steps to demonstrate as follows:. ☆ Please note: 1. Personal public key Full Name field format, to facilitate Key Server inquiries, please unify the "service unit Chinese name in English name" format, otherwise the center will not login. 2. Email address please fill in the correct, no ...

PGP itself is a data security product, what security problems does it have? "No data security system is unbreakable," Philzimmermann, author of PGP, said in the PGP document. "PGP is no exception. We look at its security vulnerabilities in order to let users know what will degrade the security of PGP and how to avoid them. Here are the vulnerabilities: passwords or private key leaks, public key tampering, files that you delete are restored, viruses and Trojan horses, physical security is violated (physical security refers to the security of physical resources such as computers) 、...

In modern society, e-mail and file transfer on the network has become a part of life, the security of the message is increasingly prominent. It is well known that the data transmitted over the Internet is usually unencrypted, and if you do not protect your important information, the third party will easily gain your privacy. Another problem is information authentication, that is, how to convince the recipient that the message has not been tampered with by a third person, which requires digital signature technology. PGP is such a product. Pgp--pretty is a Privacy based RSA public key encryption ...

1.PGP Technology has serious flaws encrypting e-mail is unsafe security experts warned August 12 that internet hackers could crack encrypted e-mails by tricking recipients into replying to emails. This problem affects software that uses PGP technology. Researchers at Columbia University and Counterpane Internet security  found that hackers who intercepted emails could decipher encrypted e-mails as long as they repackaged e-mail messages and sent them to the recipients. Email sent to the recipient will display a messy message, which is likely to prompt the receiver ...

1 Introduction e-mail plays an important role in people's work. According to statistics, the average Chinese per user receives 4.4 mails a week, sends 3.6 emails. But the primary protocol for e-mail, such as SMTP, is delivered in plaintext. This information may be obtained by a third party when it passes through an untrusted internet. In a modern society that attaches importance to information security, it clearly meets the requirements. How can this information be kept confidential without tampering or forgery? The PGP (Pretty-Privacy) described in this article is a kind of software, which is mainly used for electric ...

----Information society, e-Mail has been with telephone, fax, as an indispensable means of communication in personal life. As many as billions of emails are being sent over the internet every day, as compared to ordinary emails, e-mail saves time and money, surpassing time and space constraints, and greatly facilitates the connections between people. But while e-mail is popular, security issues are increasingly being valued. ----In fact, the process of e-mail transmission is the process of repeated replication of mail over the network, its transmission path is uncertain, it is easy to be stolen by unidentified persons ...

In the modern information society, when the email is popular, the security problem is also very prominent. In fact, the process of e-mail transmission is the process of repeated replication on the network, the network transmission path is uncertain, it is easy to be unknown identity of the theft, tampering, and even malicious destruction, to send and receive both sides trouble. Information encryption to ensure the security of the transmission of e-mail has become an urgent demand for the vast number of e-mail users. The appearance and application of PGP solves the problem of secure transmission of e-mail well. Combining the traditional symmetric encryption with the public key method, we have two ...

1, open the Start menu > Program >pgp>pgpkeys, Stay PGPkeys 2, under the key Generation Winzrad prompt wizard, click Next, start creating key pair 498) this.width=498; ' OnMouseWheel = ' Javascript:return big (This) ' src= '/files/uploadimg/20051219/02 ...

1, open PGPkeys 2, right click on the public key, select Export 3, in the Export key to File dialog box, keep the default filename and save to the teacher machine, the path is \\Teacher\share, the file name is Studentx (x is seat number) 4, Open Microsoft Outlook Express (Start > Program >outlook Express) 5, configure Outlook Express as follows ...

The key may be the most important concept in PGP. A PGP key is a public key pair created by a user for a specific target. Generally speaking, a user creates a key to make a general connection with other people. All outgoing messages are signed with this key, and all incoming messages are decrypted with this key. There may be some confusion in key management at the beginning. The following sections describe the purpose and use of the key. 1. What is the first name? The previous example shows how easy it is to produce a key, and how easy it is to put any name in the key. This example illustrates the use of the name "Ruth Tho ..."

Digital Signature Algorithm (DSA) is a variant of the Schnorr and ElGamal signature algorithm, which was used as a DSS (DigitalSignature Standard) by the United States NIST. The following parameters are applied in the algorithm: p:l bits are primes. L is a multiple of 64, the range is 512 to 1024;q:p-1 of the 160bits factor; g:g = h^ ((p-1)/q) mod p,h satisfies h < p ...

1, open Outlook Express, write a letter to the partner, the content for Hello world! 2, before sending, select all the contents of the message, right-click the taskbar in the PGP Encryption icon 3, select the current window>encrypt, encrypt the message, the results are as follows: 498 this.width=498; ' OnMouseWheel = ' javascript:return big (thi ...

PGP is a mail encryption software based on RSA public key encryption system. You can use it to keep your emails secret to prevent unauthorized reading, and it can also digitally sign your emails so that the recipient can be sure you sent them. It allows you to safely communicate with people you've never met before, and you don't need any confidential channels to pass the keys. It uses: Prudent Key management, a RSA and traditional encryption of the hybrid algorithm for digital signature of the message digest algorithms, encryption, and so on, there is a good ergonomics design. It's powerful and fast. And...

First, des algorithm in 1973, the U.S. National Bureau of Standards, in addition to the Ministry of Defence of other departments of the computer system data encryption standards, on May 15, 1973 and August 27, 1974, two times to the public to solicit encryption algorithm announcements. The purpose of the cryptographic algorithm (commonly referred to as the DES cipher algorithm requirement) is the following four points: ☆ provide high quality data protection to prevent unauthorized disclosure and undetected modification of data; ☆ has a considerable complexity, so that the cost of deciphering more than possible benefits, but also easy to understand and master;

1, use Windows Notepad to create a file Pgpstudentx (x is seat number), the contents of the file is the this file is encrypted. 2, click Start Menu > Program >pgp>pgptools 498) this.width=498 ' OnMouseWheel = ' javascript:return big (This) ' src= '/files/ Upload ...