(Very) Basic Intro To White-Box Cryptography

White-box cryptography combines methods of encryption and obfuscation to embed secret keys within application code. The goal is to combine code and keys in such a way that the two are indistinguishable to an attacker, and the new “white-box” program can be safely run in an insecure environment. What Does “White-Box” Mean? In penetration testing, … Read more (Very) Basic Intro To White-Box Cryptography

Base64 vs Base58 Encoding

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

Hashing Passwords – Python Cryptography Examples

By Lane Wagner – @wagslane on Twitter Building a from-scratch server or using a lightweight framework is empowering. With that power comes responsibility, specifically the responsibility to securely store user’s passwords. Can I Store Passwords In Plain Text? To demonstrate the potential dangers, let us assume we DON’T hash passwords on a fake example website, LoveMatchingToday. Inevitably … Read more Hashing Passwords – Python Cryptography Examples

Top 10 Online Crypto Communities 2020

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

Cryptography Trends And News Going Into 2020

Quantum Computing Quantum computing may not be coming quite as fast as some in the field had certainly feared (or perhaps hoped). Google did, however, solve an impressive problem this year. They published a paper in Nature. It stated that their quantum processor solved a problem that, in contrast, a digital computer would take 10,000 … Read more Cryptography Trends And News Going Into 2020

(Very) Basic Intro To Elliptic Curve Cryptography

Updated – May 31, 2020 This is going to be a basic introduction to elliptic curve cryptography. I will assume most of my audience is here to gain an understanding of why ECC is an effective cryptographic tool and the basics of why it works. My goal is to explain it in a general sense, … Read more (Very) Basic Intro To Elliptic Curve Cryptography

(Very) Basic Intro to Key Derivation Functions (Argon2, Scrypt, etc)

A key derivation function, or KDF, derives one or many secret keys from a secret value. Therefore, If you’ve ever needed to store a password in a database or create a private key from a password, you may have used a KDF. For instance, some examples of popular KDFs: Argon2 Scrypt PBKDF2 Are KDFs just … Read more (Very) Basic Intro to Key Derivation Functions (Argon2, Scrypt, etc)

Cryptology, Cryptography, and Cryptanalysis – Get your Vocabulary Straight!

Many new developers are jumping right into coding (usually for those fat paychecks) without learning much about the history of Computer Science. People regarded Alan Turing as the father of Computer Science. He was first a cryptologist and mathematician. Then, he pioneered the field of CS in order to solve cryptological problems. In this article, … Read more Cryptology, Cryptography, and Cryptanalysis – Get your Vocabulary Straight!

How to Create a Bitcoin Savings Wallet Using Qvault and Sentinel

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