As quantum computing steadily progresses toward real-world applications, SEALSQ Corp is taking proactive steps to secure digital transactions and blockchain ecosystems. The company is actively reinforcing its infrastructure by deploying post-quantum cryptographic (PQC) technologies across both hardware and protocol layers, ensuring long-term resilience against emerging quantum threats.
Currently, one of the most debated questions in the cybersecurity and blockchain space revolves around the computational power required to break Bitcoin encryption. While experts suggest that a few thousand qubits could theoretically compromise traditional cryptographic methods such as RSA or elliptic curve cryptography using Shor’s algorithm, practical limitations significantly raise this threshold. In reality, quantum systems would require millions or even billions of physical qubits due to error correction constraints. Although existing systems remain in the noisy intermediate-scale quantum (NISQ) phase, the potential threat is no longer hypothetical but increasingly plausible.
To stay ahead of this shift, SEALSQ is implementing a crypto-agile and quantum-resilient architecture designed to safeguard blockchain networks before large-scale quantum computers become viable. At the core of this strategy, the company integrates NIST-selected PQC algorithms into its systems. These include lattice-based cryptographic standards such as CRYSTALS-Kyber for key encapsulation and CRYSTALS-Dilithium for digital signatures. Consequently, these advanced algorithms replace or enhance traditional elliptic curve cryptography, strengthening overall security.
Moreover, SEALSQ embeds these PQC algorithms directly into its secure elements and TPM-class chips. This approach enables a hardware root-of-trust, secure key generation, and tamper-resistant key storage. As a result, organizations can anchor blockchain private keys within certified hardware, significantly reducing risks related to key extraction, side-channel attacks, and future quantum decryption.
In addition, the company enhances transaction integrity by integrating post-quantum digital signatures into blockchain processes. These signatures ensure long-term non-repudiation while protecting against quantum-enabled forgery. At the same time, SEALSQ upgrades public key infrastructure (PKI) systems to support PQC-based certificates, enabling quantum-safe authentication across distributed environments.
Furthermore, SEALSQ collaborates with WeCan to secure financial-grade blockchain transactions. Together, they incorporate advanced technologies such as secure multiparty computation (MPC), zero-knowledge proof (ZKP) frameworks, and hardware-backed identity validation. This combination not only strengthens privacy and compliance but also enhances auditability. Additionally, the integration of asynchronous Byzantine Fault Tolerant (aBFT) consensus ensures resilience at both cryptographic and network levels.
Beyond financial systems, SEALSQ is extending its capabilities through SEALCOIN.AI, a subsidiary initiative under WISeKey International Holding Ltd. This platform focuses on enabling secure machine-to-machine transactions within decentralized ecosystems. Initially deployed in satellite environments via WISeSat.Space, the SEALCOIN protocol is designed as a cross-industry transaction layer. It facilitates secure, low-latency interactions across sectors such as energy, mobility, data exchange, and space communications.
By combining hardware-based identity, certificate authentication, and PQC capabilities, the SEALCOIN network allows devices to exchange data, access services, and settle transactions securely using QAIT tokens. Notably, this architecture also supports trusted satellite communications and orbital transaction flows, creating a unified framework for both terrestrial and space-based digital economies.
At the same time, SEALSQ leverages WISeID to deliver decentralized identity (DID) solutions secured with PQC. These identities are anchored in hardware-based secure enclaves and protected using quantum-resistant credential systems, ensuring strong authentication for users, devices, and satellites alike.
Finally, the integration of these technologies into satellite infrastructure enables secure communication from ground to orbit. With embedded post-quantum secure boot, firmware validation, and encrypted channels, SEALSQ ensures end-to-end trust across space-based networks.
“Quantum computing represents both a challenge and an opportunity,” said Carlos Creus Moreira, Founder and CEO of SEALSQ. “By embedding post-quantum cryptography directly into semiconductors, blockchain protocols, and space-based infrastructure, we are taking a proactive approach to this shift, ensuring that trust in digital systems is not only preserved, but significantly strengthened. Our strategy is to integrate security at every layer of the technology stack, from hardware to decentralized networks, so that governments, enterprises, and critical industries can operate with confidence in the quantum era.”
Ultimately, by combining crypto-agility, hardware root-of-trust, advanced PQC algorithms, and secure distributed architectures, SEALSQ is actively building a future-ready, quantum-resilient foundation for blockchain, financial systems, and the rapidly evolving space economy.
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