Expert

Konstantinos (Kostas) Chalkias

Programmer @ R3

About

https://www.corda.net/

Short Intro (from LinkedIn):

Software Engineer with a PhD in Applied Cryptography. Hands-on developer and security architect with experience from large scale blockchain, fintech, fraud detection and machine learning projects.
I am currently based in London enjoying my role as a Senior Software Engineer and Lead Cryptographer for R3 and the Corda platform.

Technical Summary and Achievements (from LinkedIn):
• Ranked in the Top20 StackOverflow users coming from Greece (on Java related questions) and 1st between recent Greek StackOverflow members joined StackOverflow after 2014.
• 15+ years in software engineering acting as a Team Leader and Lead Software Developer in various US, UK and Greek based entities. CTO for 6 years in a Big Data and Security oriented US-based startup.
• An active Cryptography and Big Data researcher, currently focusing on blockchain security and novel smart contracts, post quantum signatures and zero knowledge proofs.

Interests

Google Presence

Projects

Papers

2019
Hash subtrees for grouping components by component type
Hash subtrees for grouping components by component type
K Chalkias, MC Hearn, R Parker, A Dagys
US Patent App. 15/720,201
0
2019
2018
ZKProof Standards Implementation Track
ZKProof Standards Implementation Track
PW Sean Bowe, Kobi Gurkan, Eran Tromer, Benedikt Bünz, Konstantinos Chalkias ...
https://zkproof.org/proceedings-snapshots/zkproof-implementation-20180801.pdf
0
2018
2018
Blockchained Post-Quantum Signatures
Blockchained Post-Quantum Signatures
K Chalkias, J Brown, M Hearn, T Lillehagen, I Nitto, T Schroeter
IEEE Blockchain 2018
1
2018
2018
Why Firelotto’s blockchain-based random engine is not fair?
Why Firelotto’s blockchain-based random engine is not fair?
K Chalkias, A Kichidis
https://medium.com/@chalkias/why-firelottos-blockchain-based-random-engine …
0
2018
2017
Demonstrate how Zero-Knowledge Proofs work without using maths
Demonstrate how Zero-Knowledge Proofs work without using maths
K Chalkias, M Hearn
CordaCon 2017 1 (1), 1-5
0
2017
2016
System configurations for encryption of contest data parts
System configurations for encryption of contest data parts
G Brintalos, K Chalkias
US Patent App. US15/179,687
0
2016
2016
Going beyond the coinbase transaction fee: Alternative reward schemes for miners in blockchain systems
Going beyond the coinbase transaction fee: Alternative reward schemes for miners in blockchain systems
H Gjermundrød, K Chalkias, I Dionysiou
Proceedings of the 20th Pan-Hellenic Conference on Informatics, 35
4
2016
2012
The Concept of Compatibility between Identity-based and Certificateless Encryption Schemes.
The Concept of Compatibility between Identity-based and Certificateless Encryption Schemes.
A Polychroniadou, K Chalkias, G Stephanides
SECRYPT, 403-407
0
2012
2012
A Compatible Implementation between Identity-based and Certificateless Encryption Schemes.
A Compatible Implementation between Identity-based and Certificateless Encryption Schemes.
A Polychroniadou, K Chalkias, G Stephanides
WEBIST, 225-230
1
2012
2011
Automatic Identification of Low-Risk Trading Opportunities in Sport Betting Exchange Markets
Automatic Identification of Low-Risk Trading Opportunities in Sport Betting Exchange Markets
M Ioulianou, I Christofi, K Talattinis, K Chalkias, G Stephanides
BALCOR 2011 108
1
2011
2010
Practical Implementation of Identity Based Encryption for Secure E-mail Communication
Practical Implementation of Identity Based Encryption for Secure E-mail Communication
A Kihidis, K Chalkias, G Stephanides
2010 14th Panhellenic Conference on Informatics, 101-106
4
2010
2010
Parallel collection of live data using Hadoop
Parallel collection of live data using Hadoop
K Talattinis, A Sidiropoulou, K Chalkias, G Stephanides
2010 14th Panhellenic Conference on Informatics, 66-71
14
2010
2010
Attacks on the AKACP Protocol
Attacks on the AKACP Protocol
K Chalkias, F Baldimtsi, D Hristu-Varsakelis, ST Halkidis, G Stephanides
IACR Cryptology ePrint Archive
1
2010
2010
Secure Cryptographic Protocols and Applications based on Bilinear Pairings
Secure Cryptographic Protocols and Applications based on Bilinear Pairings
K Chalkias
https://drive.google.com/file/d/1apDLir0es-FkQYXTB9WTwO1P41l4Vo0u/edit, 189
0
2010
2008
An Implementation Infrastructure for Server-Passive Timed-Release Cryptography
An Implementation Infrastructure for Server-Passive Timed-Release Cryptography
K Chalkias, F Baldimtsi, D Hristu-Varsakelis, G Stephanides
2008 The Fourth International Conference on Information Assurance and …
1
2008
2008
A versatile secure protocol for anonymous timed-release encryption
A versatile secure protocol for anonymous timed-release encryption
D Hristu-Varsakelis, K Chalkias, G Stephanides
Journal of Information Assurance and Security 2, 80-88
4
2008
2008
Mathematical problems and algorithms for timed-release encryption
Mathematical problems and algorithms for timed-release encryption
K Chalkias, F Baldimtsi, D Hristu-Varsakelis, G Stephanides
Bulletin of the Transilvania University of Brasov 15 (50), 1-4
5
2008
2008
Pairing-Based Timed-Release Cryptography
Pairing-Based Timed-Release Cryptography
K Chalkias, F Baldimtsi, D Hristu-Varsakelis, G Stephanides
NIST Identity Based Encryption Workshop
2
2008
2008
2007
Improved anonymous timed-release encryption
Improved anonymous timed-release encryption
K Chalkias, D Hristu-Varsakelis, G Stephanides
European Symposium on Research in Computer Security, 311-326
39
2007
Read more

Google Trends (past one year)

0.0
Learn about Google Trends

Academic Achievement

Twitter Influence

0/100
Learn about weight

Recent Twitter Hashtags

Recent Tweets

Popular People

Naval Ravikant
Naval Ravikant Entrepreneur | Investor @ AngelList | Bitwise Asset Management
Benedikt Bünz
Benedikt Bünz Scholar @ Stanford University | Applied Crypto Group
Craig Steven Wright
Craig Steven Wright Programmer | Entrepreneur @ nChain | DeMorgan
Meltem Demirors
Meltem Demirors Investor | Entrepreneur @ CoinShares | Shiny Pony Ventures | Digital Currency Group
Browse all people