Excellent encryption tool--PGP 6.0.2i Introduction

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 ...

PGP Security vulnerabilities

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 ...

PGP software and its application

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 ...

The application of PGP in e-mail

----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 ...

The working principle of PGP and its security system (1)

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 ...

The CIW experiment Tutorial: Creating a key pair using PGP

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 ...

CIW Experiment Tutorial: Exporting PGP Public key and pair signature under NT

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 ...

PGP key

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 ..."

DSA algorithm of encryption algorithm

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 ...

CIW Experiment Tutorial: Using PGP key pair to encrypt and decrypt information under NT

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 ...

The principle of PGP encryption

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...

Des algorithm of encryption algorithm

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;

CIW Experiment Tutorial: Encrypting and Decrypting files with PGP

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 ...

Introduction to PGP for Windows introduction

I. Preface: With the vigorous development of the Internet network, the application of various networks continue to be new, in our daily life, whether it is a routine or office business, the network for you and I, is already an indispensable part of life! There are many times when we need to use the help of the Internet to disseminate messages or to get the information we want through the Internet. The network is so convenient and easy to use, but have you ever worried: if it is important and extremely confidential information, in the vast network of the sea, how to ensure the security and confidentiality of information? Yes, information security is a very important subject. Internet ...

RSA algorithm for encryption algorithm

It is the first algorithm that can be used both for data encryption and digital signature. It is easy to understand and operate, and very popular. The name of the algorithm is named after the inventor: Ron Rivest, Adi Shamir and Leonard Adleman. But the security of RSA has not been proved theoretically. It has undergone various attacks and has not yet been completely breached. One, RSA algorithm: First, find out three number, p,q,r, where P,q is two different prime numbers, R is with (P-1) (q-1) coprime number ... p,q ...

Gnupg-gnu PGP Usage Guide

With the development of network and computer technology, the security of data storage and data exchange has become more and more important, and encryption technology has been used in data saving and data exchange very early. In order to ensure the correctness of the identities of both sides of the network data exchange, the visa system has matured. GnuPG is a set of tools for encrypting data and making certificates, and it works like PGP. But PGP uses a number of proprietary algorithms, which are among the notorious U.S. export restrictions. GnuPG is the GPL software, and does not use any patented encryption algorithm, so that ...

PGP Dictionary

ASCII Armor ASCII encoding, encoding binary files with 7bits of display ASCII code, which can be passed in only 7bits-supported emails. The MIME BASE-64 encoding is used in PGP. ciphertext ciphertext; Encrypted later information, generally unrecognized. Cryptanalysis analysis of cryptography, from the point of view of cryptography to find a loophole and attack it, PGP in cryptography is still quite solid. Even Hack ...

ElGamal algorithm of encryption algorithm

ElGamal algorithm can be used both for data encryption and digital signature, and its security depends on the problem of computing discrete logarithm on finite field. Key pair generation method. First select a prime number p, two random numbers, G and X,g, x < P, and compute y = g^x (mod p), the public key is Y, G, and P. The private key is X. G and P can be shared by a group of users. ElGamal is used for digital signatures. The signed information is M, first selects a random number k, K and P-1 coprime, calculates a = g ...

CIW Experiment Tutorial: Implementing VPN with PGP

1. Record the partner's computer name and IP address 2. Click Start > Program >pgp>pgpnet 3. Carefully read the prompts for the Add Host Wizard, click Next 4. Accept the default settings, click Next 5. Select the default item enforce Secure communications, and then click Next 6. Enter the name of the computer under Revelation and click Next 7. Enter the partner's computer name or IP address and click Next [[...]

Introduction to PGP

This article mainly introduces some principles and background knowledge about PGP implementation. Other documents on the installation and use of PGP refer to other documentation provided with this article. PGP pretty-Privacy 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 seen before, and you don't need any confidential channels to pass the secret.

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