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A TINY BIT about Cryptography

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FreeSSL, certificat SSL gratuit powered by Symantec. PRISM - Where do we go from here? In light of the shocking revelations regarding the United States surveillance machine (the National Security Agency) and their PRISM initiative - one has to ask how do we move forward?

PRISM - Where do we go from here?

As you can see from my previous blog post, I have personally written to President Barroso of the European Commission asking that the Commission immediately revoke the Safe Harbour status of the United States, ban all US companies from EU markets until such time as the US Government acknowledge and uphold the fundamental and constitutional rights of European citizens and begin a formal investigation into the allegations that the UK Government's signals analysis agency GCHQ used PRISM to circumvent the legal processes in place governing the acquisition and interception of citizens' communications.

People have already started to ask me to recommend some alternatives to the popular services we use online, to be honest there aren't very many. For the above reasons, I once again turn my old friends at Ixquick. 'Uncrackable' codes set for step up. 4 September 2013Last updated at 13:09 ET By Melissa Hogenboom Science reporter, BBC News Quantum cryptography is a way to share secret digital keys A system that allows electronic messages to be sent with complete secrecy could be on the verge of expanding beyond niche applications.

'Uncrackable' codes set for step up

Transport Layer Security. Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), are cryptographic protocols designed to provide communications security over a computer network.[1] They use X.509 certificates and hence asymmetric cryptography to authenticate the counterparty with whom they are communicating,[2] and to exchange a symmetric key.

Transport Layer Security

This session key is then used to encrypt data flowing between the parties. This allows for data/message confidentiality, and message authentication codes for message integrity and as a by-product, message authentication. [clarification needed] Several versions of the protocols are in widespread use in applications such as web browsing, electronic mail, Internet faxing, instant messaging, and voice-over-IP (VoIP). An important property in this context is forward secrecy, so the short-term session key cannot be derived from the long-term asymmetric secret key.[3] Description[edit] History and development[edit] Secure Network Programming[edit] Dr.

Merkle tree. A binary hash tree.

Merkle tree

Cryptographic Module Validation Program. Logo of the Cryptographic Module Validation Program.

Cryptographic Module Validation Program

The Cryptographic Module Validation Program (CMVP) is a joint American and Canadian security accreditation program for cryptographic modules. The program is available to any vendors who seek to have their products certified for use by the U.S. Government and regulated industries (such as financial and health-care institutions) that collect, store, transfer, share and disseminate "sensitive, but not classified" information. Avalanche effect. The SHA-1 hash function exhibits good avalanche effect.

Avalanche effect

When a single bit is changed the hash sum becomes completely different. Block cipher. In cryptography, a block cipher is a deterministic algorithm operating on fixed-length groups of bits, called blocks, with an unvarying transformation that is specified by a symmetric key.

Block cipher

Block ciphers are important elementary components in the design of many cryptographic protocols, and are widely used to implement encryption of bulk data. The modern design of block ciphers is based on the concept of an iterated product cipher. Product ciphers were suggested and analyzed by Claude Shannon in his seminal 1949 publication Communication Theory of Secrecy Systems as a means to effectively improve security by combining simple operations such as substitutions and permutations.[1] Iterated product ciphers carry out encryption in multiple rounds, each of which uses a different subkey derived from the original key. The publication of the DES cipher by the U.S. Cryptographic hash function. A cryptographic hash function (specifically, SHA-1) at work.

Cryptographic hash function

Note that even small changes in the source input (here in the word "over") drastically change the resulting output, by the so-called avalanche effect. A cryptographic hash function is a hash function which is considered practically impossible to invert, that is, to recreate the input data from its hash value alone. These one-way hash functions have been called "the workhorses of modern cryptography".[1] The input data is often called the message, and the hash value is often called the message digest or simply the digest. The ideal cryptographic hash function has four main properties: Comparison of cryptographic hash functions. Address Tracker (at) Inverted magnet icon The Magnet URI scheme is a de facto standard defining a URI scheme for Magnet links, which mainly refer to resources available for download via peer-to-peer networks.

Address Tracker (at)

Such a link typically identifies a file not by location, but by content—more precisely, by the content's cryptographic hash value. Since it specifies a file based on content or metadata, rather than by location, a Magnet link can be considered a kind of Uniform Resource Name, rather than the more common Uniform Resource Locators. Pages that link to "Comparison of cryptographic hash functions" Cryptographic hash function. Encryption For Beginners In an Era of Total Surveillance. By @AnonyOdinn If you’ve read the news lately, you’ve pretty much caught the drift of what’s going on.

Encryption For Beginners In an Era of Total Surveillance.

Surveillance is fast spreading to become a universal problem, governments are becoming the largest sponsors and purchasers of intrusive malware, and for all intents and purposes, all so-called “secure” systems are, simply put, not secure – at least not from governmental intrusion, and certainly not from the steady increase of corporate intrusion – a growing problem in a world where the concept of an open and free net is more at risk than ever.

The purpose of this simple tutorial is to provide some encryption for beginners. No lies here, the process of setting up software that helps protect your privacy, is not as easy as just using facebook or installing an ordinary browser. Cryptographic Standards for Information Protection. .pdf. Encryption essential for cyber security: A million reasons to encrypt sensitive data. Why should all the sensitive data on your computers be encrypted? You can find the answer to that question by Googling these three words: data breach unencrypted. Crypto Tools For Everyday Use. .pdf. A simple approach of Peer-to-Peer E-Cash system. .pdf. Newscron. Intypedia. Encryption Works - How to Protect Your Privacy inthe Age of NSA Surveillance. .pdf.

Cryptography - Windows 7 Password Hash Security. Cryptography Challenges for Computational Privacy in Public Clouds. .pdf. Is It the Dawn of the Encryption App? We might live in an age of persistent and pervasive surveillance. Full-Disclosure. CrypTool - Homepage. Encryption. Hacking Techniques in Wireless Networks.

Prabhaker Mateti Department of Computer Science and EngineeringWright State UniversityDayton, Ohio 45435-0001 This article is scheduled to appear in “The Handbook of Information Security”, Hossein Bidgoli (Editor-in-Chief), John Wiley & Sons, Inc., 2005. 1. Introduction. 2 2. 2.1 Stations and Access Points. 3 2.2 Channels. 4. Email Security using Public Key Cryptography. Introduction Anyone using Email that is concerned about the security of the data being transferred should use Public Key Encryption.

There are several open source software tools like GnuPG and WinPt to accomplish these tasks. The primary benefit of public key cryptography is that it allows people who have no preexisting security arrangement to exchange messages securely. The need for sender and receiver to share secret keys via some secure channel is eliminated; all communications involve only public keys, and no private key is ever transmitted or shared. This Tip describes the installation and use of GnuPG and WinPt If you want to send an encrypted mail to somebody, you encrypt it using the public key.

Criptografia_funciona. Anonymat et Cryptage. Cryptography.

Cryptoparty a site

Cryptographic Module Validation Program. Comparison of cryptographic hash functions. The GNU Privacy Guard.