background preloader

How PGP works

How PGP works
How PGP works The following text is taken from chapter 1 of the document Introduction to Cryptography in the PGP 6.5.1 documentation. Copyright © 1990-1999 Network Associates, Inc. and its Affiliated Companies. All Rights Reserved. Converted from PDF to HTML at and then manually edited by hand. The Basics of Cryptography When Julius Caesar sent messages to his generals, he didn't trust his messengers. And so we begin. Encryption and decryption Data that can be read and understood without any special measures is called plaintext or cleartext. Figure 1-1. What is cryptography? Cryptography is the science of using mathematics to encrypt and decrypt data. While cryptography is the science of securing data, cryptanalysis is the science of analyzing and breaking secure communication. Cryptology embraces both cryptography and cryptanalysis. Strong cryptography --Bruce Schneier, Applied Cryptography: Protocols, Algorithms, and Source Code in C. PGP is also about the latter sort of cryptography. Keys

http://www.pgpi.org/doc/pgpintro/

Related:  NeWeb PrivacyEncryptionfyp research

Pretty Good Privacy Pretty Good Privacy (PGP) is a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication. PGP is often used for signing, encrypting, and decrypting texts, e-mails, files, directories, and whole disk partitions and to increase the security of e-mail communications. It was created by Phil Zimmermann in 1991 while working at PKWARE, Inc.[1]

WHERE TO GET PGP (Pretty Good Privacy) Revised 17 June 2014 This FAQ applies to Pretty Good Privacy (PGP), Gnu Privacy Guard (GPG), and some other OpenPGP implementations. Disclaimer: some of this information may be outdated or otherwise inaccurate. SSL/TLS Strong Encryption: An Introduction - Apache HTTP Server Version 2.2 Available Languages: en | ja The nice thing about standards is that there are so many to choose from. And if you really don't like all the standards you just have to wait another year until the one arises you are looking for. -- A. Tanenbaum, "Introduction to Computer Networks" As an introduction this chapter is aimed at readers who are familiar with the Web, HTTP, and Apache, but are not security experts. WHERE TO GET PGP (Pretty Good Privacy) Revised 14 August 2002 This FAQ applies to Pretty Good Privacy (PGP), Gnu Privacy Guard (GPG), and some other OpenPGP implementations. Disclaimer: some of this information may be outdated or otherwise inaccurate. I don't update it very often, but you should by all means be able to find an appropriate copy of PGP and its documentation using the information contained herein.

▶ Use OpenPGP to encrypt your email messages and files in the cloud Putting sensitive data in email messages or cloud storage should give you the heebie-jeebies, but a good dose of cryptography can give you peace of mind. Pretty Good Privacy (PGP) or its open-source implementation, OpenPGP, is the gold standard of encryption online, and when used properly, has the potential to thwart even the likes of the NSA. Encryption solutions like BitLocker and DiskCryptor don’t secure email messages or files in the cloud. OpenPGP's industrial-strength encryption can ensure secure delivery of files and messages, as well as provide verification of who created or sent the message using a process called digital signing.

Anonymization of General Practioner Medical Records Amund found in traditional Norwegian Dictionaries bycounting their occurrences on all or a subset of Nor-wegian web sites. Step B – Exact Match and Tag In this and the following steps we focus on processing theunigram created from the free-text notes. Based on all thelocal and external dictionaries we create a combined diction-ary where one can look up words and get their correspondingtype(s), in order to achieve high computational performancefor dictionary lookups we use a suffix tree (also called a trie).We then proceed with looking up each word in the unigram inthe combined dictionary and if there is match add a type tag tothe word in the unigram, e.g. Should Facial Recognition Software be used in Online Dating? A personalized PBS video experience is only a few clicks away. Use one of the services below to sign-in to PBS, and you'll be able to manage videos in your Watchlist, keep track of your favorite shows, watch PBS in high definition, and much more! You've just tried to add this video to your Watchlist so you can watch it later.

The Case for Elliptic Curve Cryptography - NSA/CSS Background: Over the past 30 years, public key cryptography has become a mainstay for secure communications over the Internet and throughout many other forms of communications. It provides the foundation for both key management and digital signatures. In key management, public key cryptography is used to distribute the secret keys used in other cryptographic algorithms (e.g. Encrypting & Decrypting Data Files by Using AES and RSA Algorithms The following solution is developed to ensure encrypted communication during transferring of some data files (which includes secret information) from one point to another. Data files are encrypted before transferring and then after they arrived to target point they are decrypted to discover the secret information inside them. In order to protect and complicate capturing information inside data files as much as possible, a two-stage encryption is applied by using RSA and AES encryption standards. In this technique, 3 keys are required, one AES key (256-bit) and a public & private RSA key pair. Public & private key pair should be created by target point, private key must be saved in a secure place and public key should be sent to source side to encrypt AES key. NOTE: In order to use 256-bit AES keys, you need to download and install (if not installed yet) “Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files” from here.

Facial-Recognition App Lets People Identify Passersby By Their Online Dating Profile Bridging the gap between social media and real-world interactions, NameTag is a facial recognition app that uses Google Glass’ camera to identify a passersby face, matching it with their online profiles. The developers intended the app to boost the experience of online dating, making it more personal. Dating sites like PlentyOfFish.com and Match.com can take their services to the streets, where people can find themselves exposed to a larger pool of potential dates.

Quantum cryptography: Keeping your secrets secret An article in Nature reviewing developments in quantum cryptography describes how we can keep our secrets secret even when faced with the double challenge of mistrust and manipulation. Revelations of the extent of government surveillance have thrown a spotlight on the security – or lack thereof – of our digital communications. Even today's encrypted data is vulnerable to technological progress. What privacy is ultimately possible? In the 27 March issue of Nature, researchers Artur Ekert and Renato Renner review what physics tells us about keeping our secrets secret. In the history of secret communication, the most brilliant efforts of code-makers have been matched time and again by the ingenuity of code-breakers.

Symptoms and Diseases Database : Free Open source PHP / Mysql Patients Records project - Goomedic.com Symptoms and Diseases Database (SADDB) is a web based application created to help doctors and clinic users to store patients data . disease and symptoms . Developer notice : Its very lightweight application created using RAD php code generator Appgini . Quick overview : Installation took less than a min from me , and it does not require Appgini , just LAMP ” Linux : Apache-MySQL-PHP ” with minimal configurations as well . Simple UI , it quite helpful but somehow its too simple to consider navigation as an important element for browsing a web based project .

Related: