Aires Applied Technology

Aires Applied Technology is a deep tech startup specializing in decentralized quantum security with customized encryption solutions including post-quantum cryptography. The company develops quantum-safe cryptographic systems and security solutions to protect against quantum computer threats. Aires Applied contributes to Singapore’s quantum technology ecosystem by addressing critical cybersecurity challenges in the quantum era, providing customized security solutions for government and enterprise customers.

Company Information

• Founded: 2021
• Country: Singapore
• Website: N/A
• Categories: quantum security, post quantum-cryptography

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AROBS Polska

AROBS Polska is a Polish technology company, part of AROBS Transilvania Software, serving as prime contractor for ESA’s Post-Quantum Satellite Communication Security project announced in March 2025. The company will develop hardware, firmware, and cryptographic IP core for the PQC ASTrAL (Post-Quantum Cryptography for Aerospace and Telecommunications) satellite communication security system, partnering with ResQuant as subcontractor specializing in hardware-implemented cryptographic solutions handling cryptographic aspects. The project develops post-quantum cryptography solutions for satellite communications protecting against quantum computing threats. AROBS Polska brings expertise in aerospace software development, embedded systems, and secure communications to space-based quantum-safe cryptography. The company serves European Space Agency, satellite operators, telecommunications providers, and defense organizations requiring post-quantum cryptographic protection for satellite communications systems. AROBS Polska focuses on practical implementation of NIST-approved PQC algorithms for space systems, ensuring long-term security of satellite communications against emerging quantum computing capabilities.

Banco de Santander Quantum Division

Banco de Santander is a Spanish multinational financial services company founded in 1857 and headquartered in Madrid, Spain, with Quantum Division focusing on quantum-safe financial services and quantum cryptography implementations. Santander participates in Spain’s QKD-GEO quantum key distribution geostationary satellite mission analyzing real use cases with Hispasat, BBVA, Telefónica, and Cellnex for quantum-secure banking communications. The bank invests in quantum-safe security technologies preparing financial infrastructure for post-quantum cryptography era and quantum computing threats to current encryption protecting financial transactions and customer data. Santander explores quantum key distribution for ultra-secure banking communications, post-quantum cryptography for protecting financial data, and quantum-safe blockchain implementations for digital banking services. The company collaborates with quantum security providers implementing NIST-approved PQC algorithms across banking infrastructure. Banco de Santander serves global banking markets requiring quantum-safe financial services, secure payment systems, and quantum-resistant cryptography protecting customer transactions, financial data, and banking communications against quantum computing threats.

BBVA Quantum Division

Banco Bilbao Vizcaya Argentaria (BBVA) is a Spanish multinational financial services company founded in 1857 (origins) and headquartered in Madrid, Spain, with Quantum Division developing quantum-safe banking technologies and post-quantum cryptography implementations. BBVA participates in Spain’s QKD-GEO quantum key distribution geostationary satellite mission analyzing real use cases with Hispasat, Banco de Santander, Telefónica, and Cellnex for quantum-secure financial communications. The bank invests in quantum computing research, quantum-safe security technologies, and post-quantum cryptography preparing financial infrastructure for quantum computing threats to current encryption standards. BBVA explores quantum key distribution for ultra-secure interbank communications, post-quantum cryptography algorithms for protecting financial transactions, and quantum-safe blockchain for digital banking services. The company collaborates with quantum security providers implementing quantum-resistant cryptography across banking systems. BBVA serves global financial markets requiring quantum-safe banking infrastructure, secure payment systems, and quantum-resistant encryption protecting customer data, financial transactions, and banking communications against emerging quantum computing capabilities threatening current cryptographic systems.

Envietta

Envietta is an American quantum security company founded in 2019, developing hardware-implemented post-quantum cryptography solutions as IP Core for semiconductor integration. The company is one of only three companies worldwide offering post-quantum cryptography as IP Core: PQ Shield (UK), Envietta (USA), and ResQuant (Poland). Envietta develops cryptographic processor designs implemented on FPGA and ASIC microchips for direct integration into electronic devices, providing quantum-resistant encryption resistant to quantum computer attacks. The company implements NIST-approved post-quantum cryptography algorithms including ML-KEM (Kyber), ML-DSA (Dilithium), and SLH-DSA (SPHINCS+) as hardware accelerators and IP cores for semiconductor manufacturers. Envietta serves semiconductor companies, IoT device manufacturers, aerospace contractors, automotive suppliers, and telecommunications equipment vendors requiring hardware-based post-quantum cryptography implementations for chip-level security. The company focuses on high-performance PQC hardware implementations enabling quantum-safe security in resource-constrained embedded systems and high-throughput communications equipment.

Flipscloud

Flipscloud is an Indian quantum security company founded in 2020, developing quantum-safe cryptography solutions for cloud security and data protection. The company is recognized among emerging Quantum Cryptography Solutions providers developing innovative approaches to post-quantum security. Flipscloud specializes in quantum-resistant encryption for cloud computing environments, enterprise data protection, and secure communications. The company provides post-quantum cryptography implementations protecting cloud-based applications, data storage, and communications against quantum computing threats. Flipscloud serves enterprises, cloud service providers, financial institutions, and government agencies in India and Asia-Pacific region requiring quantum-safe cloud security solutions. The company focuses on practical implementation of post-quantum cryptography for cloud infrastructure, helping organizations prepare for quantum computing threats while maintaining compatibility with existing systems. Flipscloud addresses India’s growing digital economy security needs as the country processes approximately 114 billion digital payments annually requiring quantum-safe cryptographic protection.

ISARA

ISARA Corporation was a Canadian cybersecurity company founded in 2015 in Waterloo, Ontario, specializing in quantum-safe security solutions and post-quantum cryptography. ISARA developed cryptographic agility solutions enabling organizations to transition to quantum-resistant encryption algorithms protecting against quantum computing threats. The company was acquired by Bri stow Group (now Onboardsecurity) in 2021. ISARA provided quantum-safe security products including post-quantum cryptography libraries, crypto-agility toolkits, and quantum risk assessment services. The company served enterprise customers, government agencies, telecommunications operators, and critical infrastructure sectors requiring quantum-safe security. ISARA contributed to post-quantum cryptography standards development and quantum-safe security best practices advancing quantum-safe cryptography adoption and protecting digital infrastructure against future quantum computing threats to current encryption systems.

Keyfactor

Keyfactor is a digital trust and cryptographic solutions company headquartered in Cleveland, Ohio, with longstanding presence in the cybersecurity market. In April 2025, Keyfactor announced expanded post-quantum cryptography (PQC) capabilities across its platforms to support enterprises preparing for NIST’s 2030-2035 deprecation of classical encryption algorithms. The company developed quantum-resilient public key infrastructure (PKI), digital signing, and certificate lifecycle management solutions. Keyfactor offers the PQC Lab, a free SaaS-based version of its EJBCA Enterprise PKI platform pre-configured to issue quantum-resilient certificates in minutes. New features in Keyfactor Command, EJBCA, and Bouncy Castle enable inventorying PQC certificates, issuing hybrid RSA/ML-DSA certificates, and integrating NIST-standard algorithms with hardware security module support. Keyfactor serves enterprises, government agencies, financial institutions, and critical infrastructure sectors requiring quantum-safe cryptography migration and certificate management for the post-quantum era.

Mitsubishi Electric Quantum Division

Mitsubishi Electric Corporation is a Japanese multinational electronics and electrical equipment manufacturing company founded in 1921 and headquartered in Tokyo, Japan, with Quantum Division developing quantum communications and post-quantum cryptography solutions. Mitsubishi Electric joined forces with six partners including Toshiba and NTT to build a national quantum secure networking testbed in Japan. The company has been preparing for post-quantum cryptography, ensuring its information security products use quantum-resistant algorithms. Mitsubishi Electric develops quantum key distribution systems, quantum-safe networking equipment, and post-quantum cryptography implementations for telecommunications and critical infrastructure protection. The company invests in quantum technology research supporting Japan’s quantum communications infrastructure development. Mitsubishi Electric serves Japanese government agencies, telecommunications operators, financial institutions, defense contractors, and critical infrastructure sectors requiring quantum-safe communications equipment, QKD systems, and post-quantum cryptography implementations. The company contributes to Japan’s quantum technology ecosystem advancing practical quantum security solutions for telecommunications and enterprise markets.

NCS Group

NCS Pte. Ltd. (also known as NCS Group, previously National Computer Systems) is a multinational information technology company headquartered in Singapore, founded in 1981 when the Government of Singapore embarked upon initiatives to harness information technology for public and private sectors. The company was privatised in 1996 and became part of Singtel group in 1997. In 2024, IBM and NCS signed an MOU to support Singapore organizations with quantum-safe encryption capabilities to securely protect present data from future quantum-enabled attacks, working together to provide technology solutions, professional services, and strategic expertise for cybersecurity protection. NCS drives client success through digital transformation in AI, cloud computing, blockchain, and quantum-safe technologies. Technology partners include IBM, Microsoft, Oracle, and SAP. NCS serves Singapore government agencies, enterprises, financial institutions, healthcare organizations, and telecommunications operators requiring quantum-safe cybersecurity solutions and post-quantum cryptography implementations preparing for quantum computing threats.

NIST

National Institute of Standards and Technology (NIST) is a USA federal agency founded March 3, 1901, located in Gaithersburg, Maryland and Boulder, Colorado, operating under United States Department of Commerce. NIST conducts quantum computing research developing quantum standards, quantum metrology, post-quantum cryptography standards, and quantum networking protocols. The Joint Quantum Institute (JQI) is collaboration between NIST and University of Maryland conducting fundamental quantum research spanning trapped ions, neutral atoms, superconducting qubits, and quantum simulation. NIST leads National Quantum Initiative coordination through National Quantum Coordination Office housed within White House Office of Science and Technology Policy. In 2024 NIST published first post-quantum cryptography standards (FIPS 203, 204, 205) protecting against quantum computer threats. NIST serves government agencies, industry, and research institutions requiring quantum standards, quantum measurement techniques, and quantum-safe cryptography standards. NIST advances quantum technology through fundamental research, standards development, and technology transfer supporting USA quantum leadership.

Patero

Patero is a United States-based quantum security company founded in 2020 that developed a network security solution reducing the exposed attack surface while encrypting data-in-motion with hybrid post-quantum encryption (hybrid-PQC). Patero’s hybrid-PQC solution enhances classical cryptosystems with quantum-resistant encryption algorithms selected by the National Institute of Standards and Technology (NIST). The company’s approach combines current encryption standards with post-quantum cryptography for defense-in-depth protection against both classical and quantum computing threats. Patero is recognized as a key player in the global Post-Quantum Cryptography Market alongside NXP Semiconductor, Thales, AWS, IDEMIA, and Palo Alto Networks. The company provides enterprise network security solutions implementing NIST-approved PQC algorithms for securing data transmission across corporate networks, cloud environments, and hybrid infrastructure. Patero serves enterprises, government agencies, financial institutions, healthcare organizations, and telecommunications operators requiring quantum-safe data-in-motion encryption protecting against harvest now, decrypt later attacks.

PQShield

PQShield is an Oxford University spin-out specializing in post-quantum cryptography from theory to deployment, protecting systems against quantum computer threats with major funding rounds in 2023-2024. The company develops post-quantum cryptographic algorithms, hardware implementations, and security solutions designed to protect against attacks from both classical and quantum computers. PQShield serves semiconductor manufacturers, automotive companies, government agencies, and enterprises requiring quantum-safe security solutions, providing both cryptographic IP and security consulting services.

Protiviti Inc. Quantum Computing Services

Protiviti is a global consulting firm with dedicated quantum computing services for post-quantum risk assessments, readiness workshops, and quantum roadmaps, hosting The Post-Quantum World podcast. The firm helps organizations assess quantum computing opportunities and threats, develop quantum strategies, and prepare for post-quantum cryptography transitions. Protiviti serves clients across financial services, healthcare, technology, and government sectors with quantum risk management, quantum computing readiness assessments, and post-quantum cryptography implementation planning.

Quantum Xchange

Quantum Xchange is a US cybersecurity company specializing in quantum key distribution and post-quantum cryptography to protect data against quantum and classical threats. The company operates quantum-safe key distribution networks and provides integrated security solutions combining QKD with post-quantum cryptographic algorithms. Quantum Xchange serves financial services, healthcare, and government sectors with quantum-safe security infrastructure, helping organizations prepare for the quantum computing threat to current encryption systems.

Company Information

• Founded: 2018
• Country: United States
• Website: https://quantumxc.com
• Categories: QKD, post quantum-cryptography

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Rambus

Rambus is a semiconductor and intellectual property company headquartered in Sunnyvale, California, founded in 1990 by Mark Horowitz, Mike Farmwald, and Geoffrey Tate. Rambus offers Quantum Safe IP solutions that secure data and hardware against quantum computer attacks using NIST and CNSA selected algorithms. The CryptoManager RT-6xx Root of Trust cores support FIPS 203 ML-KEM, FIPS 204 ML-DSA, and FIPS 205 SLH-DSA standards. The Rambus Quantum Safe Crypto Library offers cryptographic algorithms for the Post Quantum Cryptography (PQC) era with focus on performance and reliability. Rambus Root of Trust IP implements quantum-resistant CRYSTALS-Kyber for key-encapsulation and CRYSTALS-Dilithium for digital signatures. The company delivers quantum-safe IP solutions with next-generation Root of Trust for data center security, protecting infrastructure against quantum computing threats. Rambus serves semiconductor manufacturers, data center operators, cloud providers, and IoT device manufacturers requiring quantum-resistant cryptographic hardware implementations.

Riscure

Riscure is an independent security laboratory founded in 2001 with headquarters in Delft, Netherlands, and branch offices in the United States and China. The company specializes in evaluating and improving security of products designed to operate securely in physically and logically hostile environments. Riscure is a market leader in Side Channel and Fault Injection test tools, serving 200+ clients worldwide with security test tools, services, and training. Now part of Keysight, Riscure has over two decades of experience in device security and actively works on post-quantum cryptography security. The Keysight Inspector platform can test implementations of the Dilithium algorithm, one of the NIST-selected PQC algorithms, allowing designers to verify product security against quantum threats. Riscure follows the scientific debate on PQC security and works with early adopters to scrutinize their solutions. The company serves semiconductor manufacturers, smart card vendors, automotive suppliers, and government agencies requiring PQC security validation and testing.

SandboxAQ

SandboxAQ is an Alphabet spin-out focused on security, measurement, and AI use cases, raising $300 million at a $5.6 billion valuation in late 2024 for quantum-safe security solutions. The company develops post-quantum cryptography solutions, quantum sensing technologies, and AI-enhanced security systems. SandboxAQ addresses the urgent need for organizations to transition to quantum-safe cryptography before quantum computers break current encryption, while also developing quantum sensor technologies for navigation and other applications.

Sixscape Communications

Sixscape Communications is a Singapore-based cybersecurity company founded in 2016, specializing in post-quantum cryptography solutions for network security and secure communications. The company develops quantum-safe encryption technology protecting against both classical and quantum computing threats. Sixscape is recognized among emerging Quantum Cryptography Solutions providers and key players in the global Post-Quantum Cryptography Market. The company provides PQC implementations for telecommunications networks, enterprise communications, and IoT device security. Sixscape collaborates with Singapore government agencies and telecommunications operators advancing quantum-safe network infrastructure as part of Singapore’s National Quantum-Safe Network initiatives. The company serves telecommunications operators, enterprises, government agencies, and IoT platform providers requiring post-quantum cryptography for securing network communications, protecting sensitive data transmission, and implementing quantum-resistant encryption algorithms. Sixscape focuses on practical PQC deployment for existing network infrastructure preparing organizations for the transition to quantum-safe security standards.

SK Telecom Q-HSM

SK Telecom’s quantum-enhanced hardware security module (Q-HSM) combines QRNG, physical unclonable functions (PUF), and post-quantum cryptography, released commercially in 2024. The major Korean telecommunications company has integrated quantum security technologies into a comprehensive security platform. SK Telecom’s Q-HSM represents a milestone in commercial quantum security deployment, combining multiple quantum and quantum-safe technologies into enterprise security infrastructure for telecommunications and beyond.

Company Information

• Founded: 1984
• Country: Korea, South
• Website: https://www.sktelecom.com
• Categories: QRNG, post quantum-cryptography

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Sparring Capital Partners

Sparring Capital Partners is a European venture capital firm founded in 2019, focusing on deep tech and enterprise software investments including quantum security companies. In March 2025, Sparring Capital Partners led Quantum Industries’ 9.5 million euro seed financing round alongside Findus Venture and KGAL, supporting Vienna-based quantum secure communications company. The firm invests in early-stage and growth-stage technology companies developing quantum cryptography, cybersecurity, enterprise software, and deep tech solutions. Sparring Capital Partners brings capital, strategic expertise, and industry connections to quantum security startups commercializing quantum communications technologies. The firm serves European quantum technology ecosystem connecting startups with corporate partners, research institutions, and follow-on investors. Sparring Capital invests in quantum key distribution companies, post-quantum cryptography developers, quantum networking startups, and quantum-safe communications providers building practical commercial quantum security solutions. The firm contributes to European quantum technology growth supporting companies developing quantum-safe infrastructure for critical communications, government agencies, financial institutions, and telecommunications operators.