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Electrum Bitcoin Wallet
Electrum is a free non-custodial cryptocurrency wallet for Bitcoin and Lightning Network. It is available for Windows, Linux (pre-installed on Tails OS), macOS and Android. Electrum is written in Python and uses the Qt widget toolkit for the user interface. Electrum is a lightweight client: it does not download the entire blockchain and instead uses simplified payment verification. Transactions are sent to public servers. It was released in 2011. Reception Mayank Sharma of ''TechRadar'' praised the wallet's advanced features, such as multisignature transactions, while noting that the wallet is not designed for inexperienced users. Marco Monroy Robles of ''Money'' liked Electrum's simple setup process, but criticized its lack of direct customer support. Security Although wallet files are encrypted with PBKDF2, private keys are encrypted with AES256 with the user's password. This could allow an attacker with access to the encrypted data to decrypt the private keys using ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Python (programming Language)
Python is a high-level programming language, high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is type system#DYNAMIC, dynamically type-checked and garbage collection (computer science), garbage-collected. It supports multiple programming paradigms, including structured programming, structured (particularly procedural programming, procedural), object-oriented and functional programming. It is often described as a "batteries included" language due to its comprehensive standard library. Guido van Rossum began working on Python in the late 1980s as a successor to the ABC (programming language), ABC programming language, and he first released it in 1991 as Python 0.9.0. Python 2.0 was released in 2000. Python 3.0, released in 2008, was a major revision not completely backward-compatible with earlier versions. Python 2.7.18, released in 2020, was the last release of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qt (software)
Qt ( pronounced "cute") is a cross-platform application development framework for creating graphical user interfaces as well as Cross-platform software, cross-platform applications that run on various software and hardware platforms such as Linux, Windows, macOS, Android (operating system), Android or embedded systems with little or no change in the underlying codebase while still being a native application with native capabilities and speed. Qt is currently being developed by The Qt Company, a publicly listed company, and the Qt Project under open-source governance, involving individual developers and organizations working to advance Qt. Qt is available under both commercial licenses and open-source GNU General Public License, GPL 2.0, GPL 3.0, and GNU Lesser General Public License, LGPL 3.0 licenses. Purposes and abilities Qt is used for developing graphical user interfaces (GUIs) and multi-platform application software, applications that run on all major Desktop computer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptocurrencies
A cryptocurrency (colloquially crypto) is a digital currency designed to work through a computer network that is not reliant on any central authority, such as a government or bank, to uphold or maintain it. Individual coin ownership records are stored in a digital ledger or blockchain, which is a computerized database that uses a consensus mechanism to secure E-commerce, transaction records, control the creation of additional coins, and verify the transfer of coin ownership. The two most common consensus mechanisms are proof of work and proof of stake. Despite the name, which has come to describe many of the fungibility, fungible blockchain tokens that have been created, cryptocurrencies are not considered to be Currency, currencies in the traditional sense, and varying legal treatments have been applied to them in various jurisdictions, including classification as Commodity, commodities, Security (finance), securities, and currencies. Cryptocurrencies are generally viewed as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictionary Attack
In cryptanalysis and computer security, a dictionary attack is an attack using a restricted subset of a keyspace to defeat a cipher or authentication mechanism by trying to determine its decryption key or passphrase, sometimes trying thousands or millions of likely possibilities often obtained from lists of past security breaches. Technique A dictionary attack is based on trying all the strings in a pre-arranged listing. Such attacks originally used words found in a dictionary (hence the phrase ''dictionary attack''); however, now there are much larger lists available on the open Internet containing hundreds of millions of passwords recovered from past data breaches. There is also cracking software that can use such lists and produce common variations, such as substituting numbers for similar-looking letters. A dictionary attack tries only those possibilities which are deemed most likely to succeed. Dictionary attacks often succeed because many people have a tendency to choose s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AES256
The Advanced Encryption Standard (AES), also known by its original name Rijndael (), is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology (NIST) in 2001. AES is a variant of the Rijndael block cipher developed by two Belgian cryptographers, Joan Daemen and Vincent Rijmen, who submitted a proposal to NIST during the AES selection process. Rijndael is a family of ciphers with different key and block sizes. For AES, NIST selected three members of the Rijndael family, each with a block size of 128 bits, but three different key lengths: 128, 192 and 256 bits. AES has been adopted by the U.S. government. It supersedes the Data Encryption Standard (DES), which was published in 1977. The algorithm described by AES is a symmetric-key algorithm, meaning the same key is used for both encrypting and decrypting the data. In the United States, AES was announced by the NIST as U.S. FIPS PUB 197 (FIPS 197) on Novemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PBKDF2
In cryptography, PBKDF1 and PBKDF2 (Password-Based Key Derivation Function 1 and 2) are key derivation functions with a sliding computational cost, used to reduce vulnerability to brute-force attacks. PBKDF2 is part of RSA Laboratories' Public-Key Cryptography Standards (PKCS) series, specifically PKCS#5 v2.0, also published as Internet Engineering Task Force's RFC2898. It supersedes PBKDF1, which could only produce derived keys up to 160 bits long. RFC8018 (PKCS#5 v2.1), published in 2017, recommends PBKDF2 for password hashing. Purpose and operation PBKDF2 applies a pseudorandom function, such as hash-based message authentication code (HMAC), to the input password or passphrase along with a salt value and repeats the process many times to produce a ''derived key'', which can then be used as a cryptographic key in subsequent operations. The added computational work makes password cracking much more difficult, and is known as key stretching. When the standard was written ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Money (financial Website)
''Money'' is an American brand and a personal finance website owned by Money Group. From its 1972 founding until 2018, it was a monthly magazine published by Time Inc. and subsequently by Meredith Corporation from 2018 to 2019. Its articles cover the gamut of personal finance topics ranging from credit cards, mortgages, insurance, banking, and investing to family finance issues, including paying for college, credit, career, and home improvement. It also publishes an annual list of "America's Best Places to Live". History The first issue of ''Money'' magazine was published in October 1972 by Time Inc. The magazine, along with ''Fortune'', partnered with sister cable network CNN in CNNMoney.com after the discontinuation of the CNNfn business news channel in 2005. In 2014, after Time Inc.'s spin-off from its parent company Time Warner, which also owned CNN, Money launched its website, Money.com. After Meredith Corporation acquired Time Inc. at the beginning of 2018, ''Money'' wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multisignature
A cryptocurrency wallet is a device, physical medium, program or an online service which stores the public and/or private keys for cryptocurrency transactions. In addition to this basic function of storing the keys, a cryptocurrency wallet more often offers the functionality of encrypting and/or signing information. Signing can for example result in executing a smart contract, a cryptocurrency transaction (see "bitcoin transaction" image), identification, or legally signing a 'document' (see "application form" image). History In 2008 bitcoin was introduced as the first cryptocurrency following the principle outlined by Satoshi Nakamoto in the paper “Bitcoin: A Peer-to-Peer Electronic Cash System.” The project was described as an electronic payment system using cryptographic proof instead of trust. It also mentioned using cryptographic proof to verify and record transactions on a blockchain. Software wallets The first wallet program, simply named ''Bitcoin'', and some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TechRadar
''TechRadar'' is an online technology publication owned by Future plc. It has editorial teams in the United States, United Kingdom, and Australia that provide news and reviews of tech products and gadgets. It was launched in 2008 and expanded to the US in January 2012. It further expanded to Australia in October 2012. It was the largest consumer technology, news and review site from the UK as of 2013. ''TechRadar'' also has licensed versions in Italy, Spain, Germany, France, Norway, Sweden, Denmark, Finland, the Netherlands and Belgium. The Indian and Middle East versions of the site closed in October 2022. It also has two spin-off sites, TechRadar Pro and TechRadar Gaming. ''TechRadar'' is owned by Future plc, the sixth-largest publisher in the United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitcoin Protocol
The bitcoin protocol is the set of rules that govern the functioning of bitcoin. Its key components and principles are: a peer-to-peer decentralized network with no central oversight; the blockchain technology, a public ledger that records all bitcoin transactions; mining and proof of work, the process to create new bitcoins and verify transactions; and cryptographic security. Users broadcast cryptographically signed messages to the network using bitcoin cryptocurrency wallet software. These messages are proposed transactions, changes to be made in the ledger. Each node has a copy of the ledger's entire transaction history. If a transaction violates the rules of the bitcoin protocol, it is ignored, as transactions only occur when the entire network reaches a consensus that they should take place. This "full network consensus" is achieved when each node on the network verifies the results of a proof-of-work operation called ''mining''. Mining packages groups of transactions in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blockchain
The blockchain is a distributed ledger with growing lists of Record (computer science), records (''blocks'') that are securely linked together via Cryptographic hash function, cryptographic hashes. Each block contains a cryptographic hash of the previous block, a Trusted timestamping, timestamp, and transaction data (generally represented as a Merkle tree, where Node (computer science), data nodes are represented by leaves). Since each block contains information about the previous block, they effectively form a ''chain'' (compare linked list data structure), with each additional block linking to the ones before it. Consequently, blockchain transactions are resistant to alteration because, once recorded, the data in any given block cannot be changed retroactively without altering all subsequent blocks and obtaining network consensus to accept these changes. Blockchains are typically managed by a peer-to-peer, peer-to-peer (P2P) computer network for use as a public distributed led ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tails OS
Tails, or "The Amnesic Incognito Live System", is a security-focused Debian-based Linux distribution aimed at preserving privacy and anonymity against surveillance. It connects to the Internet exclusively through the anonymity network Tor. The system is designed to be booted as a live DVD or live USB and never writes to the hard drive or SSD, leaving no digital footprint on the machine unless explicitly told to do so. It can also be run as a virtual machine, with some additional security risks. The Tor Project provided financial support for Tails' development in the beginnings of the project, and continues to do so alongside numerous corporate and anonymous sponsors. History Tails was first released on June 23, 2009. It is the next iteration of development on Incognito, a discontinued Gentoo-based Linux distribution. The original project was called Amnesia. The operating system was born when Amnesia was merged with Incognito. The Tor Project provided financial support for i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
