(Very) Basic Intro To Elliptic Curve Cryptography

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Elliptic curve cryptography is an efficient modern approach to public-key cryptosystems. In this introduction, our goal will be to focus on the high-level principles of what makes ECC work. We will omit implementation details and mathematical proofs, we can save those for another article. What It’s For? A common use of ECC is to encrypt data … Read more (Very) Basic Intro To Elliptic Curve Cryptography

How SHA-2 Works Step-By-Step (SHA-256)

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SHA-2 (Secure Hash Algorithm 2), of which SHA-256 is a part, is one of the most popular hashing algorithms out there. In this article, we are going to break down each step of the algorithm as simple as we can and work through a real-life example by hand. SHA-2 is known for its security (it … Read more How SHA-2 Works Step-By-Step (SHA-256)

Achieving Data Integrity Using Cryptography

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Data integrity refers to the accuracy, legitimacy, and consistency of information in a system. When a message is sent, particularly using an untrusted medium, data integrity provides us confidence that the message wasn’t tampered with. For example, the SSL signature of Qvault provides confidence that the webpage and data coming from our servers are really … Read more Achieving Data Integrity Using Cryptography

Base64 vs Base58 Encoding

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By Lane Wagner – @wagslane on Twitter Base64 is one of the most popular encoding formats for representing data. Have some binary data? Base64 encodes it for convenient readability and parsing. Base58 is just another encoding format (with 58 characters instead of 64, and has gained popularity largely due to Bitcoin and other cryptocurrencies. When it comes … Read more Base64 vs Base58 Encoding

Top 10 Online Crypto Communities 2020

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Crypto is still rapidly growing in 2020, and while the hype train has somewhat left the station, we are sure it will be back. In the meantime, it’s a good opportunity to learn more about the fundamentals and technology that support decentralized money. These communities can certainly help tremendously. #1 BITCOINTALK https://bitcointalk.org/ Bitcointalk is undoubtedly … Read more Top 10 Online Crypto Communities 2020

(Very) Basic Intro to Hash Functions (SHA-256, MD5, etc)

This is going to be a basic introduction to hash functions. I will assume most of my audience is here to gain an understanding of why hash functions are used and the basic idea of why they work. My goal is to explain it in a general sense, I will be omitting proofs and implementation … Read more (Very) Basic Intro to Hash Functions (SHA-256, MD5, etc)

(Very) Basic Shamir’s Secret Sharing

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By @wagslane (twitter) We use an algorithm called Adi Shamir’s secret sharing in order to share ownership of a secret among a group of participants. Then, in order to calculate the original secret, a minimum number of shares must be used. Example Problem To illustrate, let us imagine that a family of four shares a … Read more (Very) Basic Shamir’s Secret Sharing

How to Create a Bitcoin Savings Wallet Using Qvault and Sentinel

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DEPRECATED NOTICE This article will remain live for historic purposes, but the Qvault password manager is a deprecated project. Qvault and Samourai’s Sentinel are a match made in heaven for anyone wanting a secure and easy solution for Bitcoin savings. Why? A watch-only wallet is perfect for users who want a high-security savings account. It … Read more How to Create a Bitcoin Savings Wallet Using Qvault and Sentinel

Bitcoin Doesn’t Care About Your Identity, Only Your Knowledge

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When you make a withdrawal at a bank, pay taxes, or get a license you must prove who you are. The process of proving who you are is a very “human” process. The authority checks your ID and ensures the picture looks like you, which allows them to trust that you are the person who’s … Read more Bitcoin Doesn’t Care About Your Identity, Only Your Knowledge

How to Securely Backup a Seed Phrase

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Many newcomers to the Bitcoin and cryptocurrency space seem interested in holding their own private keys. As we know, not your keys not your coins. Dangers In order to spend Bitcoins, a user must have access to their wallet or to the seed phrase that was created alongside the wallet. Likewise, an attacker only needs … Read more How to Securely Backup a Seed Phrase