Blog — Xscriptor

The price of control — A perspective on Chat Control

A reflection on the drift of the CSAR proposal, the sacrifice of fundamental rights in the name of security, and why the pursuit of absolute control ends up devouring what it meant to protect.

PhilosophyPrivacyJuly 16, 20266 min read

The Leviathan and the Seed — The Distance of the Secret — V

On the controversy of cryptographic centralization: NIST, the single selection of Kyber, the discarded alternatives — Classic McEliece, NTRU — and the risk of placing all post-quantum security on a single mathematical conjecture.

PhilosophyTechnologyJuly 15, 20267 min read

The Limit of Error — The Distance of the Secret — III

On the physical frontier of cryptography: the energy required to break a scheme, the Landauer limit, the projection of future qubits, and why Kyber — like everything — is destined to fall.

PhilosophyTechnologyJuly 15, 20267 min read

Knowing and Doing — The Distance of the Secret — VI

On what is learned by implementing Kyber in Dart: the distance between knowing an algorithm and being able to execute it securely, between theoretical knowledge and practical action, and why cryptography demands both.

PhilosophyTechnologyJuly 15, 20266 min read

The Layer That Fails — The Distance of the Secret — II

On the abyss between the mathematical algorithm and its implementation: the case of Kyber in Flutter/Dart, side-channel attacks, and why non-constant-time code breaks what the equations promise.

PhilosophyTechnologyJuly 15, 20267 min read

The Conjecture and the Contract — The Distance of the Secret — I

On the mathematical leap of faith on which Kyber rests, the nature of hardness conjectures, and the tacit contract we sign when we call a scheme 'secure.'

PhilosophyTechnologyJuly 15, 20265 min read

The Debt of Time — The Distance of the Secret — IV

On the immediate threat of harvest now decrypt later, the industrial deployment of Kyber in Cloudflare, Signal, Chrome and AWS KMS, and why the quantum future is already cashing in on the secrets of the present.

PhilosophyTechnologyJuly 15, 20266 min read

Alternatives to mass scanning — Technical, policy and hybrid strategies for preserving privacy

An analysis of alternatives to mass communications scanning for CSAM detection, from technical approaches to policy and institutional reforms.

TechnologyPrivacyJuly 14, 20268 min read

External encryption and shared keys — The user sovereignty approach

An analysis of the approach where users encrypt their messages with keys managed outside the platform, its advantages, limits and why it does not scale as a systemic solution.

TechnologyCryptographyJuly 14, 20267 min read

Encryption and surveillance — Why mass scanning breaks E2EE

A technical and philosophical analysis of the relationship between end-to-end encryption and mandatory detection systems, and why they cannot coexist.

TechnologyCryptographyJuly 14, 20266 min read

Homomorphic encryption — Promises, limits and fiction in CSAM detection

A technical analysis of fully homomorphic encryption (FHE), its real capabilities and why it is not the solution the European Commission is looking for Chat Control.

TechnologyCryptographyJuly 14, 20267 min read

Zero-knowledge proofs — Applications and limits in CSAM detection

An analysis of zero-knowledge proofs (ZKP), private set intersection (PSI) and their feasibility for detecting illegal material in encrypted communications.

TechnologyCryptographyJuly 14, 20265 min read

Chat Control — Definition, legislative context and status of the proposal

An analysis of the EU CSAR proposal, its legislative journey, the opposing positions and the current state of the debate on scanning private communications.

TechnologyPrivacyJuly 14, 20265 min read

The Cost of Protection — The Need to Lose Identity — II

On the paradox of defense: how each layer of protection generates its own fingerprint, the problem of consistency, and the ontological asymmetry of the one who hides.

PhilosophyTechnologyJuly 8, 20266 min read

The Right Not to Be — The Need to Lose Identity — IV

Conclusion of the essay: a final reflection on privacy as a right to digital nonexistence, the exhaustion of identity, and the need to recover the ability to disappear.

PhilosophyTechnologyJuly 8, 20267 min read

Dissolution as a Resource — The Need to Lose Identity — III

An exploration of the deliberate loss of identity as a strategy of resistance, the philosophy of anonymity, and the paradox of existing without being detected.

PhilosophyTechnologyJuly 8, 20266 min read

The Paradox of the Trace — The Need to Lose Identity — I

A philosophical and technical exploration of the digital footprint, the entropy of the self, and the paradox of identity in a world that constantly measures us.

PhilosophyTechnologyJuly 8, 20265 min read

Collapse by External Imposition — Irreversibility and Reorganization

A phenomenological exploration of how external events force us to rebuild our space of possibilities, and why that reconstruction carries a cost that resembles entropy.

PhilosophyEssayJune 15, 20267 min read

Fragility Before Destiny — Superposition, Vulnerability and Resilience

An exploration of the mismatch between our internal projections and the impositions of the world, and how that distance defines our existential fragility.

PhilosophyEssayJune 15, 20266 min read