Kostas Kryptos Chalkias

According to our database, Kostas Kryptos Chalkias authored at least 55 papers between 2005 and 2025.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2025

Web3 Recovery Mechanisms and User Preferences.

Easwar Vivek Mangipudi, Panagiotis Chatzigiannis, Konstantinos Chalkias, Aniket Kate, Mohsen Minaei, Mainack Mondal

IACR Cryptol. ePrint Arch., 2025

Post-Quantum Readiness in EdDSA Chains.

Foteini Baldimtsi, Konstantinos Chalkias, Arnab Roy

IACR Cryptol. ePrint Arch., 2025

SuiGPT MAD: Move AI Decompiler to Improve Transparency and Auditability on Non-Open-Source Blockchain Smart Contract.

Eason Chen, Xinyi Tang, Zimo Xiao, Chuangji Li, Shizhuo Li, Tingguan Wu, Siyun Wang, Kostas Kryptos Chalkias

Proceedings of the ACM on Web Conference 2025, 2025

Bugdar: AI-Augmented Secure Code Review for GitHub Pull Requests.

John Naulty, Eason Chen, Joy Wang, George Digkas, Kostas Kryptos Chalkias

Proceedings of the IEEE Conference on Artificial Intelligence, 2025

Zero-Knowledge Authenticator for Blockchain: Policy-Private and Obliviously Updateable.

Kostas Kryptos Chalkias, Deepak Maram, Arnab Roy, Joy Wang, Aayush Yadav

Proceedings of the 7th Conference on Advances in Financial Technologies, 2025

2024

Optimized Computation of the Jacobi Symbol.

Jonas Lindstrøm, Kostas Kryptos Chalkias

IACR Cryptol. ePrint Arch., 2024

An Efficient Hash Function for Imaginary Class Groups.

Konstantinos Kryptos Chalkias, Jonas Lindstrøm, Arnab Roy

IACR Cryptol. ePrint Arch., 2024

Improved Polynomial Division in Cryptography.

Kostas Kryptos Chalkias, Charanjit S. Jutla, Jonas Lindstrøm, Varun Madathil, Arnab Roy

IACR Cryptol. ePrint Arch., 2024

SoK: Privacy-Preserving Transactions in Blockchains.

Foteini Baldimtsi, Kostas Kryptos Chalkias, Varun Madathil, Arnab Roy

IACR Cryptol. ePrint Arch., 2024

MAD: Move AI Decompiler to Improve Transparency and Auditability on Non-Open-Source Blockchain Smart Contract.

Eason Chen, Xinyi Tang, Zimo Xiao, Chuangji Li, Shizhuo Li, Tingguan Wu, Siyun Wang, Kostas Kryptos Chalkias

CoRR, 2024

Preserving Nature's Ledger: Blockchains in Biodiversity Conservation.

Kostas Kryptos Chalkias, Angelos Kostis, Ali Alnuaimi, Peter Knez, John Naulty, Allen Salmasi, Ryan Servatius, Rodrigo Veloso

CoRR, 2024

Buck You: Designing Easy-to-Onboard Blockchain Applications with Zero-Knowledge Login and Sponsored Transactions on Sui.

Eason Chen, Zimo Xiao, Justa Liang, Damien Chen, Pierce Hung, Kostas Kryptos Chalkias

CoRR, 2024

Fastcrypto: Pioneering Cryptography Via Continuous Benchmarking.

Kostas Kryptos Chalkias, Jonas Lindstrøm, Deepak Maram, Ben Riva, Arnab Roy, Alberto Sonnino, Joy Wang

Proceedings of the Companion of the 15th ACM/SPEC International Conference on Performance Engineering, 2024

Subset-Optimized BLS Multi-signature with Key Aggregation.

Foteini Baldimtsi, Konstantinos Kryptos Chalkias, François Garillot, Jonas Lindstrøm, Ben Riva, Arnab Roy, Mahdi Sedaghat, Alberto Sonnino, Pun Waiwitlikhit, Joy Wang

Proceedings of the Financial Cryptography and Data Security, 2024

Truncator: Time-Space Tradeoff of Cryptographic Primitives.

Foteini Baldimtsi, Konstantinos Chalkias, Panagiotis Chatzigiannis, Mahimna Kelkar

Proceedings of the Financial Cryptography and Data Security, 2024

zkLogin: Privacy-Preserving Blockchain Authentication with Existing Credentials.

Foteini Baldimtsi, Konstantinos Kryptos Chalkias, Yan Ji, Jonas Lindstrøm, Deepak Maram, Ben Riva, Arnab Roy, Mahdi Sedaghat, Joy Wang

Proceedings of the 2024 on ACM SIGSAC Conference on Computer and Communications Security, 2024

SoK: Zero-Knowledge Range Proofs.

Miranda Christ, Foteini Baldimtsi, Konstantinos Kryptos Chalkias, Deepak Maram, Arnab Roy, Joy Wang

Proceedings of the 6th Conference on Advances in Financial Technologies, 2024

2023

SoK: Web3 Recovery Mechanisms.

Panagiotis Chatzigiannis, Konstantinos Chalkias, Aniket Kate, Easwar Vivek Mangipudi, Mohsen Minaei, Mainack Mondal

IACR Cryptol. ePrint Arch., 2023

Subset-optimized BLS Multi-signature with Key Aggregation.

Foteini Baldimtsi, Konstantinos Kryptos Chalkias, François Garillot, Jonas Lindstrøm, Ben Riva, Arnab Roy, Alberto Sonnino, Pun Waiwitlikhit, Joy Wang

IACR Cryptol. ePrint Arch., 2023

Building Random, Fair, and Verifiable Games on Blockchain. Raffle smart contract designs on Sui Network.

Eason Chen, Justa Liang, Ray Huang, Pierce Hung, Damien Chen, Ashley Hsu, Konstantinos Chalkias, Stefanos Pleros

CoRR, 2023

Double Public Key Signing Function Oracle Attack on EdDSA Software Implementations.

Sam Grierson, Konstantinos Chalkias, William J. Buchanan

CoRR, 2023

Double Public Key Signing Function Oracle Attack on EdDSA Software Implementations.

Sam Grierson, Konstantinos Chalkias, William J. Buchanan, Leandros Maglaras

Proceedings of the 28th IEEE International Workshop on Computer Aided Modeling and Design of Communication Links and Networks , 2023

STROBE: Streaming Threshold Random Beacons.

Donald Beaver, Konstantinos Chalkias, Mahimna Kelkar, Lefteris Kokoris-Kogias, Kevin Lewi, Ladi de Naurois, Valeria Nikolaenko, Arnab Roy, Alberto Sonnino

Proceedings of the 5th Conference on Advances in Financial Technologies, 2023

2022

SoK: Blockchain Light Clients.

Panagiotis Chatzigiannis, Foteini Baldimtsi, Konstantinos Chalkias

Proceedings of the Financial Cryptography and Data Security, 2022

Broken Proofs of Solvency in Blockchain Custodial Wallets and Exchanges.

Konstantinos Chalkias, Panagiotis Chatzigiannis, Yan Ji

Proceedings of the Financial Cryptography and Data Security. FC 2022 International Workshops, 2022

Aggregating and Thresholdizing Hash-based Signatures using STARKs.

Irakliy Khaburzaniya, Konstantinos Chalkias, Kevin Lewi, Harjasleen Malvai

Proceedings of the ASIA CCS '22: ACM Asia Conference on Computer and Communications Security, Nagasaki, Japan, 30 May 2022, 2022

Base64 Malleability in Practice.

Konstantinos Chalkias, Panagiotis Chatzigiannis

Proceedings of the ASIA CCS '22: ACM Asia Conference on Computer and Communications Security, Nagasaki, Japan, 30 May 2022, 2022

2021

Aggregating hash-based signatures using STARKs.

Irakliy Khaburzaniya, Konstantinos Chalkias, Kevin Lewi, Harjasleen Malvai

IACR Cryptol. ePrint Arch., 2021

HashWires: Hyperefficient Credential-Based Range Proofs.

Konstantinos Chalkias, Shir Cohen, Kevin Lewi, Fredric Moezinia, Yolan Romailler

IACR Cryptol. ePrint Arch., 2021

STROBE: Stake-based Threshold Random Beacons.

Donald Beaver, Konstantinos Chalkias, Mahimna Kelkar, Lefteris Kokoris-Kogias, Kevin Lewi, Ladi de Naurois, Valeria Nicolaenko, Arnab Roy, Alberto Sonnino

IACR Cryptol. ePrint Arch., 2021

Reactive Key-Loss Protection in Blockchains.

Sam Blackshear, Konstantinos Chalkias, Panagiotis Chatzigiannis, Riyaz Faizullabhoy, Irakliy Khaburzaniya, Eleftherios Kokoris-Kogias, Joshua Lind, David Wong, Tim Zakian

Proceedings of the Financial Cryptography and Data Security. FC 2021 International Workshops, 2021

Homomorphic Decryption in Blockchains via Compressed Discrete-Log Lookup Tables.

Panagiotis Chatzigiannis, Konstantinos Chalkias, Valeria Nikolaenko

Proceedings of the Data Privacy Management, Cryptocurrencies and Blockchain Technology, 2021

Non-interactive Half-Aggregation of EdDSA and Variants of Schnorr Signatures.

Konstantinos Chalkias, François Garillot, Yashvanth Kondi, Valeria Nikolaenko

Proceedings of the Topics in Cryptology - CT-RSA 2021, 2021

Generalized Proof of Liabilities.

Yan Ji, Konstantinos Chalkias

Proceedings of the CCS '21: 2021 ACM SIGSAC Conference on Computer and Communications Security, Virtual Event, Republic of Korea, November 15, 2021

Proof of Assets in the Diem Blockchain.

Panagiotis Chatzigiannis, Konstantinos Chalkias

Proceedings of the Applied Cryptography and Network Security Workshops, 2021

SoK: Auditability and Accountability in Distributed Payment Systems.

Panagiotis Chatzigiannis, Foteini Baldimtsi, Konstantinos Chalkias

Proceedings of the Applied Cryptography and Network Security, 2021

2020

Distributed Auditing Proofs of Liabilities.

Konstantinos Chalkias, Kevin Lewi, Payman Mohassel, Valeria Nikolaenko

IACR Cryptol. ePrint Arch., 2020

Taming the Many EdDSAs.

Konstantinos Chalkias, François Garillot, Valeria Nikolaenko

Proceedings of the Security Standardisation Research - 6th International Conference, 2020

2018

Blockchained Post-Quantum Signatures.

Konstantinos Chalkias, James Brown, Mike Hearn, Tommy Lillehagen, Igor Nitto, Thomas Schroeter

Proceedings of the IEEE International Conference on Internet of Things (iThings) and IEEE Green Computing and Communications (GreenCom) and IEEE Cyber, 2018

2016

Going Beyond the Coinbase Transaction Fee: Alternative Reward Schemes for Miners in Blockchain Systems.

K. Harald Gjermundrød, Konstantinos Chalkias, Ioanna Dionysiou

Proceedings of the 20th Pan-Hellenic Conference on Informatics, 2016

2012

A Compatible Implementation between Identity-based and Certificateless Encryption Schemes.

Antigoni Polychroniadou, Konstantinos Chalkias, George Stephanides

Proceedings of the WEBIST 2012 - Proceedings of the 8th International Conference on Web Information Systems and Technologies, Porto, Portugal, 18, 2012

The Concept of Compatibility between Identity-based and Certificateless Encryption Schemes.

Antigoni Polychroniadou, Konstantinos Chalkias, George Stephanides

Proceedings of the SECRYPT 2012, 2012

2010

Secure cryptographic protocols and applications based on bilinear pairings

Konstantinos Chalkias

PhD thesis, 2010

Attacks on the AKACP Protocol.

Konstantinos Chalkias, Foteini Baldimtsi, Dimitrios Hristu-Varsakelis, Spyros T. Halkidis, George Stephanides

IACR Cryptol. ePrint Arch., 2010

Parallel Collection of Live Data Using Hadoop.

Kyriacos Talattinis, Aikaterini Sidiropoulou, Konstantinos Chalkias, George Stephanides

Proceedings of the 14th Panhellenic Conference on Informatics, 2010

Practical Implementation of Identity Based Encryption for Secure E-mail Communication.

Anastasios Kihidis, Konstantinos Chalkias, George Stephanides

Proceedings of the 14th Panhellenic Conference on Informatics, 2010

2008

Surveying Wi-Fi Security - Presentation of Wi-Fi Security Measures, Varius Wi-Fi Attacks and a Classification Survey of Wi-Fi Networks in Thessaloniki.

George E. Violettas, Tryfon Theodorou, Konstantinos Chalkias, George Stephanides

Proceedings of the WINSYS 2008, 2008

An Implementation Infrastructure for Server-Passive Timed-Release Cryptography.

Konstantinos Chalkias, Foteini Baldimtsi, Dimitrios Hristu-Varsakelis, George Stephanides

Proceedings of the Proccedings of the Fourth International Conference on Information Assurance and Security, 2008

2007

On the Key-Compromise Impersonation Vulnerability of One-Pass Key Establishment Protocols.

Konstantinos Chalkias, F. Mpaldimtsi, Dimitris Hristu-Varsakelis, George Stephanides

Proceedings of the SECRYPT 2007, 2007

Two Types of Key-Compromise Impersonation Attacks against One-Pass Key Establishment Protocols.

Konstantinos Chalkias, Foteini Baldimtsi, Dimitris Hristu-Varsakelis, George Stephanides

Proceedings of the E-business and Telecommunications - 4th International Conference, 2007

Improved Anonymous Timed-Release Encryption.

Konstantinos Chalkias, Dimitrios Hristu-Varsakelis, George Stephanides

Proceedings of the Computer Security, 2007

A Provably Secure One-Pass Two-Party Key Establishment Protocol.

Konstantinos Chalkias, Spyros T. Halkidis, Dimitrios Hristu-Varsakelis, George Stephanides, Anastasios Alexiadis

Proceedings of the Information Security and Cryptology, Third SKLOIS Conference, 2007

Low-cost Anonymous Timed-Release Encryption.

Dimitrios Hristu-Varsakelis, Konstantinos Chalkias, George Stephanides

Proceedings of the Third International Symposium on Information Assurance and Security, 2007

2006

Timed Release Cryptography from Bilinear Pairings Using Hash Chains.

Konstantinos Chalkias, George Stephanides

Proceedings of the Communications and Multimedia Security, 2006

2005

Implementing Authentication Protocol for Exchanging Encrypted Messages via an Authentication Server based on Elliptic Curve Cryptography with the ElGamal's Algorithm.

Konstantinos Chalkias, George Filiadis, George Stephanides

Proceedings of the International Enformatika Conference, 2005