BSOS x Quorum Meetup: A deep dive into Quorum

A deep dive into
Quorum:
Privacy Mechanisms for
Enterprise
REDEFINE the Future of Supply Chain

Welcome
To the Quorum Community

2019 BSOS Project © All rights reserved2019 BSOS Project © All rights reservedREDEFINE the Future of Supply Chain
Agenda
• Overview
• Introduction to Ethereum
• Quorum over Ethereum
• Q&A

Overview

2019 BSOS Project © All rights reservedREDEFINE
Why not Ethereum
• Public network without permission management
• Fully visible data in plain text
• Inefficient consensus
• Community-driven upgrade

Why Quorum
Quorum is a fork of go-ethereum repository, which is official golang
implementation of the Ethereum Protocol. Currently developed and
maintained by J.P Morgan.

Why Quorum
Quorum is a fork of go-ethereum repository, which is official golang
implementation of the Ethereum Protocol. Currently developed and
maintained by J.P Morgan.
📄
📄
📄
📄🔒
📄🔒
A
B
C

Introduction to Ethereum

Ethereum features
• A permission-less p2p network
• Transactions are broadcast to all nodes
• EVM for smart contract
• Use PoW and GHOST to achieve byzantine agreement

Ethereum network

Ethereum
ethereum node
node architecture

state
ethereum node
p2p
...
...
evm
api
other nodesend users
Ethereum node architecture

Ethereum transaction ﬂow
🙍♂
🙍♀

🙍♂
🙍♀
{
...
to: nil,
data: CONTRACT_BYTECODE,
sig: SIGNATURE,
...
}

🙍♂
🙍♀
📄
📄
📄

🙍♂
🙍♀
{
...
to: CONTRACT_ADDRESS,
data: send(‘❤’),
sig: SIGNATURE,
...
}
📄
📄
📄

🙍♂
🙍♀
📄
📄
📄
❤
❤
❤
💕
!

Quorum over Ethereum

Quorum features
• Permission
• On-chain whitelist management by smart contract
• Privacy
• Private state for private data
• Constellation node for data encryption
• Performance
• High-performance consensus like Raft and IBFT

Permission network

Permission network
A
B
C
D
E

Permission network
A
B
C
D
E
✅ A,B,C,D,E
📄

Permission network
A
B
C
D
E
✅ A,B,C,D,E
📄
✅
✅
✅
✅
✅

Permission network
✅
✅
✅
✅
✅
A
B
C
D
E
✅ A,B,C,D,E
📄

Permission network
✅
✅
✅
✅
✅
A
B
E
✅ A,B,C,D,E
C
D
F
❌
❌
📄

Permission network
✅
✅
✅
✅
✅
A
B
E
✅ A,B,C,D,E
C
D
F
❌
❌
,F
✅
📄

Quorum node architecture
quorum node

public
quorum node

privatepublic
quorum node

constellation node
api
enclave
encrypted 
data
privatepublic
quorum node

Quorum private transaction ﬂow
🏭
🏦B
E1
E2 !

{
to: nil,
privateFor: [E1],
...
}
🏭
🏦 CONTRACT_BYTECODE
B
E1
E2 !

🏭
🏦
{
to: nil,
privateFor: [E1],
...
}
CONTRACT_BYTECODE
B
E1
E2 !

🏭
🏦
CONTRACT_BYTECODE
encrypted data
B
E1
E2 !
CONTRACT_BYTECODE
{
to: nil,
privateFor: [E1],
...
}
{
to: nil,
privateFor: [E1],
...
}

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
{
to: nil,
data: ,
sig: SIGNATURE,
...
}
HASH

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
❌
HASH
HASH
{
to: nil,
data:
sig: SIGNATURE,
...
}
HASH
{
to: nil,
data:
sig: SIGNATURE,
...
}
{
to: nil,
data:
sig: SIGNATURE,
...
}

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
{
to: nil,
data:
sig: SIGNATURE,
...
}
CONTRACT_BYTECODE
{
to: nil,
data:
sig: SIGNATURE,
...
}
CONTRACT_BYTECODE

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
📄
📄

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
📄
📄
{
data: send(‘!’),
privateFor: [B],
...
}
send(‘!’)

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
📄
📄
{
data: send(‘!’),
privateFor: [B],
...
}
send(‘!’)
privateFor: [B]
encrypted data
send(‘!’)

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
📄
📄 send(‘!’)
send(‘!’)
{
data: ,
sig: SIGNATURE,
...
}
HASH

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
📄
📄 send(‘!’)
send(‘!’)
{
data: ,
sig: SIGNATURE,
...
}
HASH
{
data: ,
sig: SIGNATURE,
...
}
HASH
{
data: ,
sig: SIGNATURE,
...
}
HASH ❌

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
📄
📄 send(‘!’)
send(‘!’)
{
data: ,
sig: SIGNATURE,
...
}
send(‘!’)
{
data: ,
sig: SIGNATURE,
...
}
send(‘!’)

🏭
🏦
CONTRACT_BYTECODE
B
E1
E2 !
CONTRACT_BYTECODE
📄
📄 send(‘!’)
send(‘!’)!
!

Consensus - Raft
• Crash fault tolerance
• Immediately block finality
• Fast block time (25-50 ms)

Consensus - Raft
A
B
C
D
E

Consensus - Raft
A
C
D
E

Consensus - Istanbul BFT
• Byzantine fault tolerance
• Operational flexible

Consensus - Istanbul BFT
A
B
C
D
E
• Byzantine fault tolerance
• Operational flexible

Recap - Quorum vs Ethereum
Permission Privacy
✅
📄
✅
✅
✅
✅

Conclusion
• In Quorum network, peers still can communicate with privacy
• We can adopt more efficient consensus cause entities are not anonymous anymore
• Largest community supported project in EEA (Enterprise Ethereum Alliance)

Reach out
www.jpmorgan.com/quorum
www.github.com/jpmorganchase/quorum
http://bit.ly/quorum-slack

Q&A

w w w. b s o s . t e c h
Thank You.

BSOS x Quorum Meetup: A deep dive into Quorum

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