お知らせ • Mar 21
SEALSQ Corp Deploys Post-Quantum Cryptography to Secure Blockchain and Digital Transaction Infrastructures Through Deployment of Post-Quantum Cryptographic Technologies
SEALSQ Corp. announced that as quantum computing advances toward practical applicability, it is strengthening blockchain and digital transaction infrastructures through the deployment of post-quantum cryptographic (PQC) technologies at both hardware and protocol levels. In anticipation of this shift, SEALSQ is implementing a crypto-agile, quantum-resilient security architecture designed to protect blockchain ecosystems before large-scale quantum computers become operational. At the core of this approach is the integration of NIST-selected PQC algorithms, including lattice-based cryptography such as CRYSTALS-Kyber for key encapsulation (KEM) and CRYSTALS-Dilithium for digital signatures, replacing or augmenting traditional elliptic curve schemes. These algorithms are embedded directly into SEALSQ’s secure elements and TPM-class chips, enabling hardware root-of-trust, secure key generation, and tamper-resistant key storage. By allowing to anchor blockchain private keys in certified secure hardware, SEALSQ helps mitigate risks associated with key extraction, side-channel attacks, and future quantum decryption. To protect transaction integrity and identity, SEALSQ can integrate post-quantum digital signatures into blockchain transactions, ensuring long-term non-repudiation and resistance against quantum-enabled forgery. These signatures are supported by PKI infrastructures upgraded to support PQC certificates, enabling quantum-safe authentication across distributed systems. In collaboration with WeCan, a Swiss Blockchain financial platform, SEALSQ applies these technologies to secure financial-grade blockchain transactions, incorporating secure multiparty computation (MPC), zero-knowledge proof (ZKP) frameworks, and hardware-backed identity validation to ensure compliance, privacy, and auditability. SEALSQ combines PQC with asynchronous Byzantine Fault Tolerant (aBFT) consensus, ensuring both cryptographic and network-level resilience. Through SEALCOIN.AI, which focuses on decentralized physical internet with DePIN technology and house the development of the SEALCOIN platform, and a subsidiary of SEALSQ’s parent company WISeKey International Holding Ltd, it extends this security architecture into machine-to-machine transaction infrastructures, where authenticated devices and AI agents operate as autonomous economic actors across distributed environments. While initially deployed within satellite networks such as WISeSat.Space, another WISeKey subsidiary which focuses on space technology for secure satellite communication, specifically for IoT applications, SEALCOIN protocol is designed as a cross-industry transaction layer enabling secure, low-latency interactions between devices across energy, mobility, data, and space communication domains. By combining hardware-anchored identity, certificate-based authentication, secure transactions settlement, and post quantum capabilities, SEALCOIN network enables devices to securely exchange data, access services, and settle transactions in QAIT tokens across decentralized networks. In space-based environments, this architecture supports trusted satellite communications and orbital transaction flows; more broadly, it establishes a unified infrastructure for secure machine economies across both terrestrial and non-terrestrial systems. Through WISeID.com, a digital identity platform and a WISeKey subsidiary, SEALSQ delivers decentralized identity (DID) frameworks secured with PQC, enabling strong authentication of users, devices, and satellites. These identities are anchored in hardware-based secure enclaves and protected using quantum-resistant credential issuance and verification mechanisms. Finally, WISeSat.Space integrates these capabilities into a secure satellite infrastructure layer, where onboard chips embed post-quantum secure boot, firmware integrity verification, and encrypted communication channels, ensuring end-to-end trust from ground to space. This enables trusted space transactions, where blockchain operations, identity verification, and data exchange occur securely across orbital networks. By combining crypto-agility, hardware root-of-trust, PQC algorithms, and secure distributed architectures, SEALSQ is building a quantum-resilient foundation for blockchain, financial systems, and the emerging space economy.