Yolan Romailler

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Yolan Romailler , Protocol Labs

Yolan is an applied cryptographer delving into (and dwelling on) cryptography, secure coding, blockchains technologies and other fun things such as self-sovereign identities or digital currencies. He has previously spoken at Black Hat USA, BSidesLV, Cryptovillage, NorthSec, GopherConEU and DEF CON on topics including automation in cryptography, public keys vulnerabilities, elliptic curves, post-quantum cryptography, functional encryption, open source security, and more! He notably presented at FDTC the first known practical fault attack against the EdDSA signature scheme.
Yolan tweets as @anomalroil.


Discussion: Cryptography Block

This is a Q&A session. Moderators will take audience questions both remotely and on-site via sli.do.


Hosted panel discussion and Q&A.

Hosted panel discussion and Q&A.

Talk: Public, verifiable, and unbiasable randomness: wassat?

Talks will be streamed on YouTube and Twitch for free.


Randomness is infamously known for biting developers whenever cryptography is involved. Now that distributed systems are becoming a thing and also have to deal with it, let's explore what's what.

In this talk, we will walk through what's randomness, and why it matters. We will discover the different "flavours" of randomness, from the "private" to the "public" one, including the "verifiable", the "distributed" and the infamous "lack of" randomness.
We will discover a few use-cases for each of these, discuss the problems lurking behind each, and existing solutions to avoid them.
Finally we will (re)discover "drand", a distributed randomness open-source software that allows you to run your own, join an existing network or just query good quality public, verifiable, distributed randomness. We will briefly cover the existing League of Entropy behind the main existing drand network, what it's being used for and why public randomness should be treated as a public service.