SEALSQ Uses Post-Quantum Cryptography to Protect International Satellite and Blockchain Systems
SEALSQ press release
Leading semiconductor and post-quantum technology company SEALSQ Corp (NASDAQ: LAES) announced that it is implementing Post-Quantum Cryptographic (PQC) technologies to secure the world’s increasingly vulnerable digital transaction infrastructures, a historic step for the cybersecurity sector. By fortifying blockchain and digital systems at the hardware and protocol levels, SEALSQ is adopting a proactive approach as quantum computing approaches practicality.
The Potential Quantum Threat to Digital Finance
This endeavor is motivated by the growing threat posed by quantum computers. As quantum systems develop, traditional encryption techniques like RSA and Elliptic Curve Cryptography (ECC), which presently protect almost all digital transactions, are predicted to become susceptible.
The amount of qubits needed to jeopardize significant assets like Bitcoin is a crucial topic presently being implemented in the industry. Although theoretical models indicate that Shor’s method may crack current encryption with a few thousand qubits, practical considerations such as quantum error correction probably raise this need to tens of millions or possibly billions of physical qubits. Even though the technology available today is still restricted to noisy intermediate-scale quantum (NISQ) devices, the threat is seen as becoming more real, requiring quick defensive action.
Building a Quantum-Resilient Architecture
SEALSQ is putting in place a quantum-resilient, crypto-agile security architecture to mitigate these dangers. The foundation of this system is PQC techniques chosen by NIST, particularly lattice-based cryptography. Important elements include:
- CRYSTALS-Kyber: Used to encrypt keys securely (KEM).
- CRYSTALS-Dilithium: Used to guarantee transaction integrity for digital signatures.
These complex algorithms are not only software-based; they are embedded directly into TPM-class processors and SEALSQ’s secure components. By establishing a hardware root-of-trust, this hardware-centric strategy reduces the risks associated with side-channel attacks and potential quantum decryption by allowing safe key generation and tamper-resistant storage.
Network security and cooperative finance
Through a strategic partnership with WeCan, a Swiss blockchain finance platform, SEALSQ’s approach expands into the financial industry. By combining the following, they are safeguarding financial-grade transactions:
- Zero-Knowledge Proof (ZKP) and Secure Multiparty Computation (MPC) frameworks to improve auditability and privacy.
- Asynchronous Byzantine Fault Tolerant (aBFT) consensus to guarantee both cryptographic security and network-level resilience.
Additionally, by using post-quantum digital signatures, which offer long-term non-repudiation and resilience against forging made possible by quantum computing, SEALSQ is safeguarding transaction identity. Upgraded PKI infrastructures that can issue and manage PQC certificates complement these initiatives.
Securing the Machine Economy and Space Frontier
SEALSQ’s deployment is distinct in that it emphasizes the “machine economy” and the decentralized physical internet. The business is expanding its security architecture to machine-to-machine (M2M) infrastructures through SEALCOIN.AI, a division of WISeKey International Holding Ltd. Autonomous AI devices and agents function as economic actors in this setting, safely settling transactions with QAIT tokens.
Satellite networks such as WISeSat.Space is using this technology. SEALSQ provides end-to-end confidence from ground to space by integrating firmware integrity verification and post-quantum secure boot into onboard satellite processors. Secure data sharing between terrestrial and non-terrestrial systems and trusted orbital transaction flows are supported by this infrastructure.
WISeID.com offers PQC-secured decentralized identification (DID) frameworks to support these initiatives. Because these identities are rooted in hardware-based secure enclaves, credential issuance is kept quantum-resistant for users, devices, and satellites.
A Vision for the Quantum Era
The significance of this multi-layered approach was emphasized by Carlos Creus Moreira, founder and CEO of SEALSQ: “Quantum computing represents both a challenge and an opportunity,” he said. “By embedding post-quantum cryptography directly into semiconductors, blockchain protocols, and space-based infrastructure, we are taking a proactive approach… ensuring that trust in digital systems is not only preserved but significantly strengthened” .
By including security at every level of the technological stack, from physical hardware to decentralized networks, Moreira stated that the objective is to enable governments and businesses to function with trust.
Expanding Industry Impact
SEALSQ’s post-quantum semiconductors are intended for a variety of crucial applications outside of finance and space. These include medical and healthcare infrastructure, industrial automation, smart energy systems, multi-factor authentication tokens, and defense. SEALSQ hopes to secure sensitive data in a variety of businesses against the impending advent of large-scale quantum computers by developing these future-proof security techniques.
