blockchain & decentralised identity (trust framework) · => blockchain/distributed ledger...
TRANSCRIPT
Blockchain & Decentralised
Identity (trust framework)
David Pollington, Head of Service
Access Technology
Copyright © 2018 GSMA. The Mobile Connect logo is a trade mark registered and owned by the GSMA.Identity – Mobile Connect2
Blockchain – a recap
A distributed and decentralised ledger (a linked transaction database)
The transaction blocks are cryptographically protected for immutability
A protocol for the distributed ledger management – ensuring only valid transactions are added and are immutable
Block 306
Block 307
Block 308
Blockchain
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Types of Blockchain… drawing parallels with network types
Identity – Mobile Connect
Permissionless Permissioned
Public
Private
Internet
Intranet
Extranet
Home network
Trend
Copyright © 2018 GSMA. The Mobile Connect logo is a trade mark registered and owned by the GSMA.Identity – Mobile Connect4
Example use case: application of Blockchain
to Mobile Connect SP Onboarding
Mobile Connect SP Onboarding Blockchain
Service
ProviderDeveloper Portal
MNO ID GW MNO ID GW
Onboard App Generate App Credentials
Promote Encrypted (Credentials, SP Metadata)
Get, Decrypt
(Credentials,
Metadata)
Get, Decrypt
(Credentials,
Metadata)
Permissioned
Private
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Key challenges that digital identity
faces:
1. Establishing trust in a trustless
digital world
2. Decentralisation: control and
ownership of the identity
attributes (self-sovereign
identity)
3. Immutability of the operations
related to the digital identity
=> Blockchain/Distributed Ledger
Technologies well placed to
address these requirements
Identity – Mobile Connect5
Application of Blockchain to Identity?
Source: Peter Steiner's cartoon, as published in The
New Yorker
• Note though that personal
information is NOT stored
on the Blockchain (not
even in hashed form)
• => the value that
Blockchain provides is in
ensuring authenticity and
privacy:
• Data integrity proofs
• Provenance
• Blinding
• Zero-knowledge proofs
• Resiliency
Copyright © 2018 GSMA. The Mobile Connect logo is a trade mark registered and owned by the GSMA.6
Why do it? => establishment of trust frameworks
unlocks the digital economy
Identity – Mobile Connect
Copyright © 2018 GSMA. The Mobile Connect logo is a trade mark registered and owned by the GSMA.7
Why do it? => trust eroding in existing online identity players
Identity – Mobile Connect
Copyright © 2018 GSMA. The Mobile Connect logo is a trade mark registered and owned by the GSMA.
• GDPR and public sentiment
over the increasing number
of data breaches driving
popularity in the concept of
Self-Sovereign Identity (SSI)
• => user takes
responsibility and
ownership of their identity
and uses a range of 3rd
party issuers to vouch for
the user's claims
Identity – Mobile Connect8
Why do it? => move to a decentralised approach (SSI)
Copyright © 2018 GSMA. The Mobile Connect logo is a trade mark registered and owned by the GSMA.
• Uses a distributed
ledger for managing
decentralised identifiers
(DIDs) and ensuring
authenticity of the
parties interacting via
the framework and the
information (claims)
that are exchanged
Identity – Mobile Connect9
Introducing Sovrin (DLT-based trust framework)
verification verificationverification
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• Open standards approach (W3C, DIF) and
gaining significant momentum through support
from the likes of IBM and DT
• …but many issues still remain around usability,
commercialisation and faith in the technology
Identity – Mobile Connect10
Introducing Sovrin (DLT-based trust framework)
Copyright © 2018 GSMA. The Mobile Connect logo is a trade mark registered and owned by the GSMA.11
Unlikely that there’ll be just one global trust framework for identity…
Identity – Mobile Connect
National Global Sector
Copyright © 2018 GSMA. The Mobile Connect logo is a trade mark registered and owned by the GSMA.Identity – Mobile Connect12
Key role for Mobile Connect: Humanising Blockchain
Authenticate
Consent
Blockchain
Uses MSISDN Uses Keys, Digital Signature
Blockchain
helps to create
a “connected”
secure identity
Mobile Connect helps to
“connect” the user to the
Blockchain in a secure and
convenient way
Private Key
Public Key
…and MNOs acting as issuer/verifiers of claims (attributes)