IC Talk: Security and Privacy Challenges in Path-Based Transaction Networks
Event details
| Date | 25.04.2018 |
| Hour | 15:15 › 16:30 |
| Location | |
| Category | Conferences - Seminars |
By: Pedro Moreno Sanchez from Purdue University
Abstract:
Path-based transaction (PBT) networks, which settle payments from one user to another via a path of intermediaries, are a growing area of research. They overcome the scalability issues in cryptocurrencies like Bitcoin and Ethereum by replacing expensive and slow on-chain blockchain operations with inexpensive and fast off-chain transfers. In the form of credit networks such as Ripple and Stellar, they also enable low-price real-time gross settlements across different currencies.
In this talk, I will describe security and privacy challenges that must be tackled when realizing a PBT. I will also present the solutions that we proposed for some of these challenges. Interestingly, our current results show the impossibility of achieving all security and privacy properties of interest simultaneously, having thereby solutions that provide a tradeoff between security, privacy and performance.
Bio:
Pedro Moreno-Sanchez is a fifth year PhD student in the Department of Computer Science at Purdue University, which is located in the state of Indiana (USA). His advisor is Aniket Kate. Before moving to Purdue University in August 2015, he started his PhD studies at Saarland University in April 2013 under the supervision of Aniket Kate.
He has been an intern research at IBM Research - Zurich (Switzerland) in 2017 under the supervision of Christian Cachin; at Ripple (USA) in 2016 under the supervision of Stefan Thomas; and at Philips Research Europe (The Netherlands) under the supervision of Oscar Garcia-Morchon and Rafael Marin-Lopez. He received his bachelors and masters from the University of Murcia (UM) (Spain) in 2011 and 2013 respectively.
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Abstract:
Path-based transaction (PBT) networks, which settle payments from one user to another via a path of intermediaries, are a growing area of research. They overcome the scalability issues in cryptocurrencies like Bitcoin and Ethereum by replacing expensive and slow on-chain blockchain operations with inexpensive and fast off-chain transfers. In the form of credit networks such as Ripple and Stellar, they also enable low-price real-time gross settlements across different currencies.
In this talk, I will describe security and privacy challenges that must be tackled when realizing a PBT. I will also present the solutions that we proposed for some of these challenges. Interestingly, our current results show the impossibility of achieving all security and privacy properties of interest simultaneously, having thereby solutions that provide a tradeoff between security, privacy and performance.
Bio:
Pedro Moreno-Sanchez is a fifth year PhD student in the Department of Computer Science at Purdue University, which is located in the state of Indiana (USA). His advisor is Aniket Kate. Before moving to Purdue University in August 2015, he started his PhD studies at Saarland University in April 2013 under the supervision of Aniket Kate.
He has been an intern research at IBM Research - Zurich (Switzerland) in 2017 under the supervision of Christian Cachin; at Ripple (USA) in 2016 under the supervision of Stefan Thomas; and at Philips Research Europe (The Netherlands) under the supervision of Oscar Garcia-Morchon and Rafael Marin-Lopez. He received his bachelors and masters from the University of Murcia (UM) (Spain) in 2011 and 2013 respectively.
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Practical information
- General public
- Free
- This event is internal
Contact
- Host : Carmela Troncoso