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Saturday, June 4 • 10:00am - 12:30pm
Cryptography and Blockchain Security

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Registration at https://bsidessf.regfox.com/2022 REQUIRED (cannot be reserved with Sched)

Learn how blockchains, cryptocurrency, coin offerings, and smart contracts work in a series of challenges. We will also cover the underlying cryptography: hashes, symmetric encryption, and asymmetric encryption. We will configure wallets, servers, and vulnerable smart contracts, and exploit them.

We will configure systems using Bitcoin, Ethereum, Hyperledger, Multichain, Stellar, and more. We will perform exploits, including double-spend, reentrancy, integer underflow, and logic flaws.

No previous experience with coding or blockchains is required. The workshop is structured in a CTF format. Each participant works at their own pace. The techniques will be demonstrated with complete step-by-step instructions to lead beginners through the easy challenges. There are also harder challenges for more experienced participants. We will help participants as needed to ensure that everyone learns new techniques.

Participants will need a computer with a web browser and either the capability to run virtual machines locally or a credit card and a few dollars to rent cloud servers.

avatar for Sam Bowne

Sam Bowne

Professor, City College San Francisco
Sam Bowne has been teaching computer networking and security classes at City College San Francisco since 2000. He has given talks and hands-on training at DEF CON, DEF CON China, Black Hat USA, HOPE, BSidesSF, BSidesLV, RSA, and many other conferences and colleges.

Saturday June 4, 2022 10:00am - 12:30pm PDT
Theater 11