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Security and Performance Testbed for Simulation of Proof-of-Stake Protocols
Holub, Juraj ; Malinka, Kamil (oponent) ; Homoliak, Ivan (vedoucí práce)
This work aims to analyze the security and performance of three Proof-of-Stake consensus protocols for blockchain (Harmony, Solana and Ouroboros). For this purpose, a simulation tool is created, which experiments with these protocols. The solution also includes a comparison of currently available blockchain simulators. The simulation results show that all three protocols can work efficiently even in large networks. In terms of security, the simulation points to a vulnerability in the form of a DoS attack. Based on the results, modifications to the protocols were proposed that minimize the mentioned security vulnerability. The created simulator is freely available and intended for potential further research of similar consensus protocols.
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Security and Performance Testbed for Simulation of Proof-of-Stake Protocols
Hud, Jakub ; Perešíni, Martin (oponent) ; Homoliak, Ivan (vedoucí práce)
This thesis deals with testing the security and performance of PoS-based protocols. Comparison of ProPos, Algorand, Hedera, Ouroboros and Tezos is presented on theoretical level in terms of performance, attack vulnerabilities and attacks mitigation. This thesis includes a simulation framework for testing Algorand, ProPos and Hedera protocols. The simulation framework is created using Omnet++ 5.4.1. Focus of the simulation experiments is on the performance of the selected protocols. Based on the results of the experiments a few improvements are discussed.
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Security and Performance Testbed for Simulation of Proof-of-Stake Protocols
Kotráš, Jan ; Hellebrandt, Lukáš (oponent) ; Malinka, Kamil (vedoucí práce)
This diploma thesis deals with blockchain technology with focusing on the consensus protocols, especially on proof-of-stake protocols type. This thesis describes blockchain technology followed by description of consensus in this technology. First part precisely describes a comparison of specific proof-of-stake protocols based on the theoretical knowledge. Second part of thesis focuses on the design and the implementation of a testbed. The testbed is used for comparison of proof-of-stake protocols practically. In the last section of thesis, we discuss our observed properties of proof-of-stake protocols and on this basement we indicate some next ways of evolution and improvement in the consensus and proof-of-stake protocols.
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Security and Performance Analysis of Avalanche Distributed Consensus Protocol
Sapák, Filip ; Malinka, Kamil (oponent) ; Perešíni, Martin (vedoucí práce)
In this thesis, we discuss the analysis of the "Proof-of-Stake" (PoS) distributed consensus protocol Avalanche. We describe blockchain, consensus algorithms and the simulation tools designed to simulate the blockchain. After getting acquainted with all the necessary facts, the thesis proceeds with the implementation of a simulator of the consensus algorithm implemented in the Avalanche protocol, which mimics the functioning of the Avalanche consensus. Experiments with simulator were conducted with various parameters and helped us to understand properties of Avalanche.
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Security and Performance Testbed for Simulation of Proof-of-Stake Protocols
Hud, Jakub ; Perešíni, Martin (oponent) ; Homoliak, Ivan (vedoucí práce)
This thesis deals with testing the security and performance of PoS-based protocols. Comparison of ProPos, Algorand, Hedera, Ouroboros and Tezos is presented on theoretical level in terms of performance, attack vulnerabilities and attacks mitigation. This thesis includes a simulation framework for testing Algorand, ProPos and Hedera protocols. The simulation framework is created using Omnet++ 5.4.1. Focus of the simulation experiments is on the performance of the selected protocols. Based on the results of the experiments a few improvements are discussed.
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Security and Performance Testbed for Simulation of Proof-of-Stake Protocols
Holub, Juraj ; Malinka, Kamil (oponent) ; Homoliak, Ivan (vedoucí práce)
This work aims to analyze the security and performance of three Proof-of-Stake consensus protocols for blockchain (Harmony, Solana and Ouroboros). For this purpose, a simulation tool is created, which experiments with these protocols. The solution also includes a comparison of currently available blockchain simulators. The simulation results show that all three protocols can work efficiently even in large networks. In terms of security, the simulation points to a vulnerability in the form of a DoS attack. Based on the results, modifications to the protocols were proposed that minimize the mentioned security vulnerability. The created simulator is freely available and intended for potential further research of similar consensus protocols.
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Security and Performance Analysis of Avalanche Distributed Consensus Protocol
Sapák, Filip ; Malinka, Kamil (oponent) ; Perešíni, Martin (vedoucí práce)
In this thesis, we discuss the analysis of the "Proof-of-Stake" (PoS) distributed consensus protocol Avalanche. We describe blockchain, consensus algorithms and the simulation tools designed to simulate the blockchain. After getting acquainted with all the necessary facts, the thesis proceeds with the implementation of a simulator of the consensus algorithm implemented in the Avalanche protocol, which mimics the functioning of the Avalanche consensus. Experiments with simulator were conducted with various parameters and helped us to understand properties of Avalanche.
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Security and Performance Testbed for Simulation of Proof-of-Stake Protocols
Kotráš, Jan ; Hellebrandt, Lukáš (oponent) ; Malinka, Kamil (vedoucí práce)
This diploma thesis deals with blockchain technology with focusing on the consensus protocols, especially on proof-of-stake protocols type. This thesis describes blockchain technology followed by description of consensus in this technology. First part precisely describes a comparison of specific proof-of-stake protocols based on the theoretical knowledge. Second part of thesis focuses on the design and the implementation of a testbed. The testbed is used for comparison of proof-of-stake protocols practically. In the last section of thesis, we discuss our observed properties of proof-of-stake protocols and on this basement we indicate some next ways of evolution and improvement in the consensus and proof-of-stake protocols.
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