Northern Virginia Linux Users Group (NovaLUG) is the oldest in the Northern VA area - probably in the whole of US. Established 1993, the group is still going strong talking about Linux and anything Open Source. The group meets once a month to socialize and "geek out" on different topics, and in between mailinglists are busy connecting people to solutions, answers to questions and just people interested in Linux to other people with similar interests. For more information, consult http://novalug.com
The blockchain has been a hot topic in all social media recently. People have been talking about it for years. The crypto is also a very controversial topic. In this presentation, we will touch a few areas of Blockchain, explain its general concepts, its working models and use cases, dive into its technologies, mainly focus on its enterprise level use cases, consensus and working models.
Ren has been in IT industry over 20 years. He is an experienced blockchain practitioner and lead. Besides of Blockchain, his expertise is also in cloud infrastructure, IoT, and AI/machine learning. Currently he is leading blockchain R&D projects for an large IT company. He got his degrees of MBA from JHU and MS of Computer Science from TTU & Shanghai Jiaotong University. In his leisure time, he has been playing with the Raspberry Pi for years.
This presentation will provide all the basics about cryptography starting with a little bit of history, then presenting the methods used nowaday: symmetric and public-key cryptosystems, digital signatures, steganography. Real-life examples will be discussed especially around TLS security certificates.
The speaker, Xavier Belanger, is a system and network administrator with 20 years of experience. He is holding a CISSP certification.