Blockchain et IoT - introduction (X. Lavayssière, ECAN)

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This document discusses the history and challenges of blockchains and their use with IoT. It covers the evolution of technologies pre-bitcoin like TCP, RSA, and hashcash that led to bitcoin being introduced in 2009. It then explains how public/private keys and transactions work with blockchains. Some challenges with blockchains and IoT are also summarized like interface/UX, certification of data, security, privacy, and governance of infrastructure. The document concludes with a brief mention of initial coin offerings.

Technology

Xavier Lavayssière
@XavierLava
Business Public Law Computer Science & Maths

Xavier Lavayssière
@XavierLava
Smart Contract
Blockchain Perspectives
CNAM - CERSA ( CNRS/Paris II)
ECAN

Pre-bitcoin
TCP
1974
RSA
1976
Digicash
1989
Hashcash
1997
1964

Pre-bitcoin
TCP
1974
RSA
1976
Digicash
1989
Reusable PoW
2004
Hashcash
1997
P2P
1999
1964

Pre-bitcoin
TCP
1974
RSA
1976
Digicash
1989
Reusable PoW
2004
Bitcoin
2009
Ethereum
2015
Hashcash
1997
P2P
1999
1964

Bitcoin
January 3rd 2009 : First block
“Chancellor Alistair Darling on brink of second bailout for
banks” The Times

Public and private keys
Clé privée
E9873D79C6D87DC
Clé publique
K878KC2
Nombre aléatoire

Public/private key
Public Key
Message +
Encrypted
Message
Encryption
Private Key
Message + Signature
Signature

Privacy
Inputs Outputs
0xGJR93
0xZRG32
0xGR32Y
0xHZR32
0xHZE32
0x09SD3
0x823KU
0x9K32Y
0xAR432
0x9K32Y
0xM93F

Proof value of transactions
Technically
● Number of nodes
● Heterogeneity
● Protocole and consensus algorithm
Legally
● Jurisprudence
● Law
○ Civil code
○ loi 6 août 2015 pour la croissance, l’activité
et l’égalité des chances économiques
○ Ordonnance n° 2016-520 du 28 avril 2016
relative aux bons de caisse
○ Two decrees

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Sergey Ivliev

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prasenjeetd

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Bernhard Hofer

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B.VIGNESH

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Blockchain et IoT - introduction (X. Lavayssière, ECAN)

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