Presented at
Black Hat Europe 2017,
Dec. 7, 2017, 3:15 p.m.
(60 minutes).
The SHA-3 standard came out in 2015 including the new hash function SHA-3 itself (based on a sponge construction) as well as SHAKE, a new kind of hash function called XOF. This talk will first go over these two modern algorithms, and will then introduce the other standardized functions derived from SHA-3 (KMAC, TupleHash, ParallelHash) and the more mature, modern and faster hash functions based on SHA-3: KangarooTwelve and MarsupilamiFourteen. The second part of the talk will focus on cryptographic protocols created out of SHA-3: Strobe, a symmetric protocol to protect traffic which only relies on SHA-3 as its core cryptographic function; Disco, a Noise (TLS-like) protocol and library leveraging SHA-3's properties to minimize the number of cryptographic primitives, reduce the code size, simplify the logic and increase the capabilities (hashing, generation of random numbers, derivation of keys, signing, encryption, authentication).
Presenters:
-
David Wong
- Security Consultant, NCC group
David Wong is a Security Consultant at the Cryptography Services practice of NCC Group. He has been part of several publicly funded open source audits such as OpenSSL and Let's Encrypt. He has conducted research in many domains in cryptography, publishing whitepapers and sharing results at various conferences including DEF CON and ToorCon as well as giving a recurrent cryptography course at Black Hat. He has contributed to standards like TLS 1.3 and the Noise Protocol Framework. He has found vulnerabilities in many systems including CVE-2016-3959 in the Go programming language and a bug in SHA-3's derived KangarooTwelve reference implementation. Prior to NCC Group, David graduated from the University of Bordeaux with a Masters in Cryptography, and prior to this from the University of Lyon and McMaster University with a Bachelor in Mathematics.
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