Security at Cubiq Network

Overview

Cubiq Network's security model is built on the foundation of zero-knowledge proofs, ensuring that all off-chain computations are verifiable without revealing underlying data. This, combined with a robust consensus mechanism and secure infrastructure, creates a highly resilient and trustworthy environment.

Key pillars of our security include:

• Zero-Knowledge Proofs: Cryptographic verification of computation.
• Decentralized Consensus: Resilient against single points of failure.
• Secure Infrastructure: Protection of prover networks and data.
• Continuous Auditing: Regular security assessments and bug bounty programs.

Cryptographic Security

At the heart of Cubiq's security are advanced cryptographic techniques:

Zero-Knowledge Proofs (ZKPs)

• Plonky3: Our primary ZKP system for efficient and recursive proof generation.
• Proof Verification: Mobile Qubes verify proofs locally using optimized WASM verifiers.
• Data Integrity: Ensures that off-chain computations are executed correctly and honestly.

Digital Signatures

• Transaction Signing: All transactions are cryptographically signed by users.
• Prover Signatures: zkURL proofs are signed by registered provers, ensuring authenticity.
• Validator Signatures: Qube validators sign blocks to confirm their validity.

Network Security

The Cubiq Network is designed to be resilient against various network attacks:

Consensus Mechanism (DPoS)

• Delegated Proof of Stake: Ensures network security through staked QUBE tokens.
• Slashing: Malicious validator behavior is penalized by slashing staked tokens.
• BFT-style Finality: Provides strong guarantees against forks and double-spending.

P2P Networking

• Gossip Protocol: Efficient and resilient block propagation across mobile nodes.
• Encrypted Communications: All peer-to-peer communications are encrypted.
• Sybil Resistance: Mechanisms to prevent malicious actors from overwhelming the network.

Cloud Prover Network Security

• Isolated Environments: Provers operate in secure, isolated cloud environments.
• Access Controls: Strict access policies and authentication for prover infrastructure.
• Monitoring & Alerting: Continuous monitoring for suspicious activities and anomalies.

Smart Contract Security

While Cubiq's zkEVM provides a secure execution environment, smart contract security remains crucial:

• EVM Compatibility: Supports Solidity, allowing developers to leverage existing security best practices.
• ZK-Optimized Opcodes: Focus on opcodes that are efficiently provable, reducing complexity and potential attack surface.
• Auditing: We encourage and support independent security audits of smart contracts deployed on Cubiq.
• Developer Tools: Provide tools and guidelines for writing secure and efficient smart contracts.

Audits & Bug Bounty

We are committed to continuous security improvement through external validation:

Security Audits

• Regular Audits: Our protocol and core components undergo regular security audits by leading blockchain security firms.
• Transparency: Audit reports will be publicly available for review.

Bug Bounty Program

We operate a bug bounty program to incentivize security researchers to identify and report vulnerabilities. Details of the program, including scope and rewards, will be published on our official channels.