Cryptography

ELI5: Cryptocurrency master keys by @Cryptobill
A cryptocurrency master key is a theoretical concept where one specially crafted cryptographic private key would be able to decrypt ciphertext encrypted using any public key. As...
 
James Ellis: The British cryptographer who invented public key cryptography before Diffie-Hellman (and kept quiet about it) by @Cryptobill
When you think of heroic British spies, the image of a math guy in heavy frame glasses working behind a desk piled with math books does not usually come to mind. While the world en...
Understand asymmetric AKA public key cryptography by @Cryptobill
For thousands of years the art of encryption consisted in hiding one secret from the enemy. By gaining access to this secret the opponent could decode the message and, perhaps, fut...
Understand Multisignature Systems by @Cryptobill
A Bitcoin is simply a signed transaction on the blockchain. When you say you own X Bitcoins, it means one or more transactions were signed, using private keys, attributing a certai...
 
What’s a “paper wallet”? Doesn’t sound too high tech? by @Cryptobill
Five steps to make paper in ancient China Printing secrets on paper doesn't sound high tech, but it's one ...
Understand Sponge Functions for cryptocurrency development by @Cryptobill
If you've been following the development of IOTA and other cryptocurrencies, then you've probably heard the term "cryptographic sponge function", or simply sponge function. What...
IOTA hash collisions could have wrecked the network if it were fully decentralized by @Cryptobill
Professor Matthew Green of Johns Hopkins University posted an interesting, if not troubling, tweet about IOTA's security: The use of a broken hash function would have been a cri...
 
Is Quantum Key Distribution in the future of cryptocurrencies? by @Cryptobill
Can you imagine a transmission system where the data would change if anyone simply peeked into it? Imagine the two most popular cryptocurrency enthusiasts, Alice and Bob, could exc...
Decentralized blockchains can only survive with a valuable token, like Bitcoin, attached to them by @Cryptobill
We've heard this time and again, especially from folks in the financial sector: "blockchain is here to stay, Bitcoin not so much". Is this really so? We disagree, and in this ar...
The CryptoNight and CryptoNight Light PoW Algorithms by @Cryptobill
CryptoNight is a Proof-of-Work algorithm which aims to be CPU-mining friendly. CryptoNight Lite A lighter version of CryptoNight which uses memory cache pages half the size (1 MB...