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Iulian Costan

@icostan

Computer geek, derivatives trader, crypto hodler.

217 followers 27 following 9 posts Reputation 25

Iulian Costan
@icostan Oct 2, 2019, 7:20 AM UTC

Animated Elliptic Curve cryptography

The easiest way to understand Elliptic Curve (EC), point addition, scalar multiplication and trapdoor function; explained with simple graphs and animations. # 1. Abstract - What the heck is an ellipt…

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Iulian Costan
@icostan Apr 13, 2019, 1:09 PM UTC

Cryptography: ECDSA

# Overview --- "If you can't explain it simply, you don't understand it well enough" - Einstein --- Elliptic curve cryptography (ECC) and digital signature algorithm (ECDSA) are more complex than RSA…

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Iulian Costan
@icostan Mar 27, 2019, 1:27 PM UTC

Cryptography: ElGamal

# Overview --- "If you can't explain it simply, you don't understand it well enough" - Einstein --- ElGamal is a public key cryptosystem that is used in encryption , digital signature and homomorphic…

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Iulian Costan
@icostan Mar 23, 2019, 1:30 PM UTC

Cryptography: RSA

# Overview --- "If you can't explain it simply, you don't understand it well enough" - Einstein --- RSA (Rivest-Shamir-Adleman) needs no introduction, it is well known and most used public-key crypto…

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Iulian Costan
@icostan Feb 2, 2019, 1:03 PM UTC

Idiomatic Ruby library for BitMEX API

# Bitmex-api-ruby Fully featured, idiomatic Ruby library for BitMEX API. Support for both REST and Websocket APIs as described in API Overview. ## Installation shell gem install bitmex-api ## Usage L…

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Iulian Costan
@icostan Dec 11, 2018, 9:24 AM UTC

Introducing Cryptos-ruby: The easiest way to craft your own transactions

I just want to announce the very first release [v0.0.3] of Cryptos-ruby project, a simple and very easy to use Ruby API to manipulate multiple crypto coins. For more information please check Github p…

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Iulian Costan
@icostan Nov 11, 2018, 12:40 PM UTC

The hard way - Bitcoin: transactions

# The hard way - Bitcoin: Transaction This is Part 2 of 'The hard way - Bitcoin' series and I will start with 'the easy way' section first because even this gets a bit complex, then will continue wit…

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Iulian Costan
@icostan Oct 9, 2018, 10:45 AM UTC

The hard way - Bitcoin: private key, public key, address

This article is all about two ways of generating a Bitcoin address: the hard way using simple math and the easy way using an existing Bitcoin library. ## A. The hard way In this first section I am go…

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