Explore the top post-quantum cryptography companies shaping the future of digital security. This article highlights innovative startups creating solutions to protect against quantum computing threats. From hardware encryption and audit tools to secure key distribution and blockchain, these companies are securing sensitive data. Discover how their technologies are preparing industries for the post-quantum era.
5 Post-Quantum Cryptography Companies to Watch in 2025
- ResQuant – Post-Quantum Hardware Encryption
- QryptoCyber – Integrated PQC Audit Tool
- Quantum Knight – Embeddable Cryptography
- Quantum Industries – Quantum Key Distribution (QKD)
- Quranium – Quantum Proof Hybrid Distributed Ledger
Global Startup Heat Map highlights 5 Post-Quantum Cryptography Companies to Watch
Through the Big Data & Artificial Intelligence (AI)-powered StartUs Insights Discovery Platform, covering over 4 760 120+ startups & scaleups globally, we identified 50+ post-quantum cryptography startups.
The Global Startup Heat Map below highlights the 5 post-quantum cryptography startups you should watch in 2025 as well as the geo-distribution of all 50+ startups & scaleups we analyzed for this research.
As the world’s largest resource for data on emerging companies, the SaaS platform enables you to identify relevant technologies and industry trends quickly & exhaustively.
The 5 hand-picked startups highlighted in this report are chosen from all over the world and develop solutions for post-quantum hardware encryption, integrated PQC audit tools, embeddable cryptography, quantum-proof hybrid distributed ledger, and more.
Discover 5 Post-Quantum Cryptography Companies to Watch in 2025
1. ResQuant
- Founding Year: 2020
- Location: Lodz, Poland
- Use For: Protection Against Quantum Threats
ResQuant develops hardware-based post-quantum encryption solutions to counteract threats posed by quantum computing.
It designs IP core licenses, FPGA accelerators, and proprietary PQC System-on-a-Chip (SoC) technology to integrate quantum-resilient security into diverse applications. These implementations come in various configurations, optimizing size, power consumption, and speed.
ResQuant addresses specific needs such as secure communications, data integrity, and system encryption. It also offers protection against quantum threats while enabling practical implementation across automotive, IoT, military, and ICT.
Moreover, ResQuant announced a partnership with SCI Semiconductor to accelerate post-quantum cryptography (PQC) algorithms on advanced CHERI-enabled devices.
2. QryptoCyber
- Founding Year: 2023
- Location: City, Washington, United States
- Use For: Quantum-vulnerable Cryptographic Systems
QryptoCyber specializes in integrated post-quantum cryptographic audit tool that identifies, catalog, and manage quantum-vulnerable cryptographic systems across digital environments.
The startup’s platform automates the creation of a cryptography bill of materials (CBOM) to provide visibility into cryptographic assets.
QryptoCyber’s solution quantifies quantum risk by offering financial insights into vulnerabilities and supporting informed decision-making for system upgrades. The platform generates detailed reports for executives to enhance their understanding of quantum risk initiatives.
The startup’s tools also provide actionable insights to prepare for the emerging quantum threat and enable organizations to protect sensitive data and critical infrastructure.
3. Quantum Knight
- Founding Year: 2023
- Location: Palo Alto, United States
- Use For: Protection against Quantum Computing Threats
Quantum Knight develops embeddable cryptographic solutions to protect sensitive data against the emerging threats of quantum computing.
Its solution integrates into existing infrastructures to create secure communication channels and safeguard critical systems, such as law enforcement operations and election security.
Moreover, Quantum Knight’s solutions employ methods like lattice-based and hash-based cryptography that offer the integrity and confidentiality of information in quantum-vulnerable environments.
4. Quantum Industries
- Founding Year: 2023
- Location: Vienna, Austria
- Use For: Secured Telecommunications
Quantum Industries provides quantum key distribution (QKD) technologies to secure sensitive telecommunications against emerging quantum computing threats.
The startup’s quantum key distribution (QKD) systems utilize polarization-entangled photon pairs to generate secure encryption keys. These systems come in two variants, a long-distance model optimized for 350km range and a high-speed version for inter-city distances of 10km.
Additionally, Quantum Industries offers a polarization-entangled photon pair source for research and development purposes.
The QKD technology uses quantum entanglement to create ultra-strong correlations, ensuring tamper-proof communication resistant to advanced computational attacks.
5. Quranium
- Founding Year: 2024
- Location: Dubai, United Arab Emirates
- Use For: Quantum-proof Hybrid Distributed Ledger
Quranium offers a quantum-proof hybrid distributed ledger designed to address the vulnerabilities of traditional blockchain systems against quantum computing threats.
The startup introduces DeQUIP, a Decentralized Quantum-Uncrackable Infrastructure Protocol, which sets a new standard for uncrackable security in the blockchain industry.
Quranium’s Layer 1 DLT technology forms the foundation of its ecosystem to withstand potential quantum computing attacks.
In addition, the Q-Safe Wallet which is a part of Quranium’s product suite, provides users with a secure storage solution for digital assets.
Additionally, Quranium has partnered with major firms like PwC and established operational hubs in Singapore, the UAE, and Switzerland to strengthen its mission of building a secure blockchain ecosystem.
Discover All Emerging Post-Quantum Cryptography Companies
The 50+ post-quantum cryptography startups showcased in this report are only a small sample of all startups we identified through our data-driven startup scouting approach.
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