Quantum_Blockchain

Quantum-lattice BlockChain Structure

• Index
• Timestamp
• Data
• Quantum Key
• hash (lattice-based)

Quantum Key Distribution ( based on BB92 protocol)

• Simulate BBM92 quantum key distribution protocol
• Creation of two quantum circuits named Alice and Bob
• Apply Hadamard gate on Alice's qubit, measure it, and share the circuit state with Bob
• Simulate circuits, compare results, and establish a secure key

Latice Based Hash

• Take index, previous_hash, timestamp, data, quantum_key as input
• Calculate hash using lattice-based hash function
• lattice-based hash function employs SHAKE-256 algorithm and large prime modulus for message digest and producing lattice-based hash using previous_hash

Team Members

• Mayank Raj
• Susan Shilbi
• Shreyash Kumar S
• Shaswat Kaushik
• Vaidik Chhirolya

Proposed Model Arhitecture:

The Test:

• We are implemting Double-Spending Attack on a simple blockchaina nd our proposed quantum blockchain and comparing the complexity of both the codes by looking at he outputs.
• The output clearly showcases that the more complex nature of the quantum blockcahin makes it harder for such an attack to be successful.
• This ensures the future safety of blockchain applications from the more sophisticated and fast Quantum Computers by utilizing quantum safe algorithms.

OUTPUTS

OUTPUT OF blockchain.py:

OUTPUT OF quantum_blockchain.py:

OUTPUT OF test_blockchain.py:

• Testing Simple blockchain:

• Testing Quantum blockchain:

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Youtube links:

The links provided below would help you understand the concepts and solutions in a much more proper way.

• Basic General Idea : https://youtu.be/hlOw1xysR04
• Deeper Discussions: https://youtu.be/qKdhKEkkuf0
• Codes and Proposed structures: https://youtu.be/qKdhKEkkuf0