Designated Verifier Model

Definition ∞ The Designated Verifier Model refers to a cryptographic system where only a specific, pre-selected party can verify the authenticity of a digital signature. Unlike standard digital signatures, which anyone can verify, this model restricts verification capabilities to a designated entity. This setup offers enhanced privacy and control over who can confirm a transaction’s validity. It finds application in scenarios where selective disclosure of verification rights is necessary. This approach offers controlled transparency.
Context ∞ This model is a technical concept often discussed in advanced cryptography and blockchain privacy research. News relating to zero-knowledge proofs or confidential transactions may reference designated verifiers as a component of more complex privacy-preserving protocols. The debate often centers on balancing the security benefits of restricted verification with the transparency principles inherent in many blockchain systems. This shapes future privacy solutions.

This abstract digital artwork visualizes a complex, interconnected structure composed of interlocking dark blue geometric blocks and shimmering blue crystalline facets. Spherical white orbs, reminiscent of nodes or tokens, are strategically placed within this lattice, some encircled by a smooth, white torus, suggesting orbiting or secure containment. The overall impression evokes decentralized networks, secure data transfer protocols, and the intricate architecture of blockchain technology, hinting at distributed ledger consensus mechanisms and cryptographic key management.

→Linear-Only Vector Encryption

→Lattice-Based Cryptography

→Quantum-Secure Privacy

Lattice-Based zkSNARKs Achieve Practical Post-Quantum Proof Efficiency

This new lattice-based zkSNARK construction dramatically reduces post-quantum proof size and prover time, enabling practical, quantum-secure privacy on-chain.

An abstract, futuristic device features a translucent, textured shell, partially clear and partially vibrant blue, encasing metallic internal structures. A central, glowing blue lens or core suggests active processing, embodying a cryptographic primitive. This secure enclave design visualizes robust digital asset security within a distributed ledger technology framework. The intricate composition reflects the complexity of a consensus mechanism, ensuring immutable record integrity and facilitating secure multi-party computation in Web3 infrastructure.

→Verifiable Computation

→Linear-Only Encryption

→Zero-Knowledge Proofs

Lattice-Based zkSNARKs Achieve Post-Quantum Security with Tenfold Proof Size Reduction

A new lattice-based zkSNARK construction dramatically shrinks post-quantum proof size by 10x, enabling practical, quantum-resistant verifiable computation.

A close-up view displays a blue bevel gear and metallic bearing components, partially enveloped by a white, frothy substance. This visual metaphorically represents a protocol cleansing mechanism in a distributed ledger technology DLT environment. The intricate gear teeth, interacting with the foam, symbolize the continuous transaction scrubbing and optimization of network throughput. Metallic elements suggest robust cryptographic integrity and the foundational consensus mechanism ensuring system health and efficiency within the decentralized finance DeFi ecosystem.

→NP Relations

→Preprocessing Model

→Rank Two Module Lattices

Lattice-Based SNARKs Achieve Practical Post-Quantum Proof Size Reduction

A new lattice-based zkSNARK construction reduces post-quantum proof size by $10.3times$, collapsing the massive overhead that hindered quantum-secure verifiable computation.

Designated Verifier Model

Lattice-Based zkSNARKs Achieve Practical Post-Quantum Proof Efficiency

Lattice-Based zkSNARKs Achieve Post-Quantum Security with Tenfold Proof Size Reduction

Lattice-Based SNARKs Achieve Practical Post-Quantum Proof Size Reduction

Incrypthos

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