A multiparty homomorphic encryption library in Go
A multiparty homomorphic encryption library in Go
Demo @ WAHC 2020 Christian Mouchet, Jean-Philippe Bossuat, Juan Troncoso-Pastoriza, Jean-Pierre Hubaux Laboratory for Data Security EPFL Dec. 15, 2020
Agenda
1. Homomorphic Encryption & Multiparty Homomorphic Encryption 2. The Lattigo Library
a. Purpose b. Components c. Performance 3. Demo: a private web-application for scheduling meetings 4. Applications using Lattigo
2
Single-party HE setting
"Computing on data without seeing them"
!
In the passive-adversary model, Single-party HE can achieve secure two-party computation: Can this be extended to N-parties?
3
Multiparty HE setting
"Computing on multiparty data without seeing them using cryptographic protocols"
" ! "
"Early" semi-homomorphic constructions [FH 96, CDB 01]
(R-)LWE-based instantiations in the
Threshold model [AJLTVW 12, MTBH 20] and "out-of-the-box": secure multiparty function
Multi-key model [LTV 12, CDKS 19, CCS 19] evaluation in the passive-adversary model
4
Variety of system models
Cloud-based MPC
Eval
Peer-to-peer MPC
"
Encrypt Eval
Encrypt
!
Encrypt
"
Encrypt
!
Encrypt
Eval
!
Encrypt
Eval
!
Networked Concurrent Cross-platform
This is where the Go language shines!
5
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