Personne
Eleftherios Kokoris Kogias
Publications associées (14)
CALYPSO: Private Data Management for Decentralized Ledgers
Bryan Alexander Ford, Linus Gasser, Eleftherios Kokoris Kogias, Philipp Svetolik Jovanovic, Enis Ceyhun Alp
Distributed ledgers provide high availability and integrity, making them a key enabler for practical and secure computation of distributed workloads among mutually distrustful parties. Many practical applications also require strong confidentiality, howeve ...
2021CALYPSO: Private Data Management for Decentralized Ledgers
Bryan Alexander Ford, Linus Gasser, Eleftherios Kokoris Kogias, Philipp Svetolik Jovanovic, Enis Ceyhun Alp
Distributed ledgers provide high availability and integrity, making them a key enabler for practical and secure computation of distributed workloads among mutually distrustful parties. Many practical applications also require strong confidentiality, howeve ...
ASSOC COMPUTING MACHINERY2020Secure, Confidential Blockchains Providing High Throughput and Low Latency
One of the core promises of blockchain technology is that of enabling trustworthy data dissemination in a trustless environment. What current blockchain systems deliver, however, is slow dissemination of public data, rendering blockchain technology unusabl ...
EPFL2019Rethinking General-Purpose Decentralized Computing
Bryan Alexander Ford, Eleftherios Kokoris Kogias, Georgia Fragkouli, Enis Ceyhun Alp
While showing great promise, smart contracts are difficult to program correctly, as they need a deep understanding of cryptography and distributed algorithms, and offer limited functionality, as they have to be deterministic and cannot operate on secret da ...
ASSOC COMPUTING MACHINERY2019Methods and systems for secure data exchange
Bryan Alexander Ford, Linus Gasser, Eleftherios Kokoris Kogias
The present invention concerns a computer-implemented method for secure data exchange between a sender (A) and a recipient (B), wherein the method is performed by the sender (A) and comprises encrypting data using a symmetric key k, creating a write transa ...
2019Channels: Horizontal Scaling and Confidentiality on Permissioned Blockchains
Eleftherios Kokoris Kogias, Christian Cachin
Sharding, or partitioning the system's state so that different subsets of participants handle it, is a proven approach to building distributed systems whose total capacity scales horizontally with the number of participants. Many distributed ledgers have a ...
SPRINGER INTERNATIONAL PUBLISHING AG2018Channels: Horizontal Scaling and Confidentiality on Permissioned Blockchains with Application on Hyperledger Fabric
Eleftherios Kokoris Kogias, Christian Cachin
Sharding, or partitioning the system’s state so that different subsets of participants handle it, is a proven approach to building distributed systems whose total capacity scales horizontally with the number of participants. Many distributed ledgers have a ...
2018Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods
Bryan Alexander Ford, Linus Gasser, Eleftherios Kokoris Kogias, Philipp Svetolik Jovanovic
Data storage and retrieval systems, methods, and computer-readable media utilize a cryptographically verifiable data structure that facilitates verification of a transaction in a decentralized peer-to-peer environment using multi-hop backwards and forwards ...
2018OmniLedger: A Secure, Scale-Out, Decentralized Ledger via Sharding
Bryan Alexander Ford, Linus Gasser, Eleftherios Kokoris Kogias, Philipp Svetolik Jovanovic, Nicolas Gailly
Designing a secure permissionless distributed ledger (blockchain) that performs on par with centralized payment processors, such as Visa, is a challenging task. Most existing distributed ledgers are unable to scale-out, i.e., to grow their total processing ...
2018Low-latency Blockchain Consensus
Bryan Alexander Ford, Eleftherios Kokoris Kogias, Cristina Basescu
Blockchains are increasingly attractive due to their decentralization, yet inherent limitations of high latency, in the order of minutes, and attacks on consensus cap their practicality. We introduce Blinkchain, a Byzantine consensus protocol that relies o ...
2017