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Related Concept Videos

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When a current moves through any conductor, the conductor causes some level of difficulty for the current to flow. The measure of that difficulty is known as the resistance of the material and is represented by R. Every material has its own resistance. In the case of conductors, heat is emitted whenever a current passes through them. Resistance depends on the resistivity of the material. Resistivity is a characteristic of the material used to fabricate electrical components, whereas the...
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In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
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A conductor's DC resistance at a given temperature is influenced by its resistivity, length, and cross-sectional area. Resistivity is an inherent property of the conductor material, with annealed copper serving as the international standard for measurement. For instance, the resistivity of hard-drawn aluminum at 20 degrees Celsius is 61% of the standard conductivity of annealed copper.
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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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Quantum-resistance in blockchain networks.

Marcos Allende1,2, Diego López León1,2, Sergio Cerón1,2

  • 1IDB-Inter-American Development Bank, 1300 New York Ave, Washington, DC, USA.

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Quantum computing threatens blockchain security. This study introduces a novel framework and open-source implementation for post-quantum blockchains, securing digital assets against quantum threats without requiring new networks.

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Area of Science:

  • Computer Science
  • Cryptography
  • Quantum Computing

Background:

  • Quantum computing poses a significant threat to current blockchain security due to non-quantum resistant cryptographic algorithms.
  • Algorithms like RSA, (EC)DSA, and (EC)DH are vulnerable to Shor's algorithm, while Grover's algorithm impacts consensus protocols.
  • Billions in cryptocurrency and digital assets are at risk on existing blockchain ledgers.

Purpose of the Study:

  • To propose an end-to-end framework for post-quantum blockchain networks applicable to existing systems.
  • To develop an open-source implementation for achieving quantum resistance in blockchain networks.
  • To address the limitations of existing theoretical or network-rebuilding solutions.

Main Methods:

  • Utilized quantum entropy for generating post-quantum key pairs.
  • Established post-quantum TLS connections and X.509 certificates for secure node communication.
  • Introduced post-quantum second signatures using Falcon-512 keys in transactions.
  • Developed and analyzed three on-chain verification mechanisms for post-quantum signatures: Solidity smart contracts, modified EVM Opcodes, and precompiled smart contracts.

Main Results:

  • Demonstrated an open-source implementation on an Ethereum-based (EVM compatible) network.
  • Achieved quantum-resistant communication and transaction security without large quantum key distribution (QKD) networks.
  • Successfully implemented and compared on-chain verification methods for post-quantum signatures.

Conclusions:

  • The proposed framework offers a practical, end-to-end solution for enhancing existing blockchains with quantum resistance.
  • The open-source implementation provides a tangible method for securing digital assets and applications against future quantum threats.
  • This work pioneers on-chain verification of post-quantum signatures, paving the way for future quantum-safe blockchain development.