India’s manufacturing journey stands out as one of the most impressive transformations of the century. Once dismissed as a “services-only” economy, we have advanced notably in electric vehicles, defence, semiconductors, and space tech. Production-Linked Incentive schemes are revitalising factories throughout Tamil Nadu, Gujarat, and elsewhere. Yet, these successes do not reflect the looming quantum threat, which experts warn could affect vital sectors as soon as 2030–2035.
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A Slow Wake-Up Call
Many Indian manufacturers are still unaware of post-quantum cryptography (PQC). A 2024 NASSCOM survey showed that fewer than 8% of large enterprises and almost none of the MSMEs have allocated funds for the transition. For instance, made-in-India EVs with 5G and OTA updates continue to depend on RSA and elliptic-curve cryptography, which will become outdated once quantum computers become a reality.
Our main sectors, including the defence corridors in Uttar Pradesh and Tamil Nadu, semiconductor manufacturing plants in Gujarat and Assam, and pharma clusters in Himachal and Telangana, rely on global supply-chain software that presumes current encryption will remain secure indefinitely. Additionally, India’s highly regarded UPI system will need a complete cryptographic overhaul once quantum computers become operational.
The government is beginning initial efforts, guided by advisories from MeitY and STQC, as well as the ₹6,000 crore National Quantum Mission. However, converting research from Bhabha Atomic Research Centre labs into manufacturing processes remains a major challenge.
Key Challenges: More Than Just Technology
Most small or micro Indian manufacturing units still depend on outdated systems like Windows 7 because they ‘work,’ reducing the likelihood of quickly adopting lattice or hash-based algorithms. Their main challenges relate to MSME issues. Legacy OT systems also pose a major obstacle; many factories have upgraded their IT but still use older PLCs and SCADA systems that cannot be updated with new firmware or quantum-safe solutions.
Although India produces top cryptographers, most work abroad, leading to skill shortages. Manufacturers need thousands of “crypto plumbers’ to implement PQC algorithms, but such expertise is limited.
Upgrading certificates, VPNs, or HSMs can cost crores for medium-sized businesses. In industries with small margins, quantum readiness often seems like an unaffordable luxury or a financial constraint.
Many Indian industrial IoT platforms, such as Siemens MindSphere and GE Predix, are developed in Europe or the Americas. Without adopting quantum-safe protocols, Indian manufacturers remain vulnerable, increasing reliance on global suppliers.
Strategic Roadmap: From Panic to Planning
This challenge can be tackled with a practical, India-specific roadmap:
India can turn the post-quantum threat into a national objective through a detailed, phased approach. From 2025 to 2027, companies eligible for Production-Linked Incentives should create a comprehensive “crypto inventory” of all systems using public-key cryptography, supported by strong tax incentives for early assessments, similar to previous successful energy audits.
Between 2026 and 2029, industry players should adopt crypto-agility frameworks and deploy hybrid cryptography immediately, running current RSA/ECDSA alongside NIST-standardised post-quantum algorithms to buy time with minimal performance impact.
From 2027 to 2032, the National Quantum Mission should fund the development of fully indigenous quantum-safe technologies: PQC libraries from C-DAC, quantum-resistant hardware from BEL, and open-source protocols led by IIT Madras and IISc, aiming for cryptographic sovereignty similar to ISRO’s Navic.
Meanwhile, around 25 manufacturing clusters, including Chakan’s auto hub and Tiruppur’s textile centre, should form consortia in which major firms finance migration efforts and support smaller vendors, sharing costs and enhancing resilience.
Workforce development will be promoted through Skill India, aiming to have all ITIs and polytechnics teach at least one quantum-safe algorithm by 2028. Apprenticeships in defence PSUs and joint ventures, such as Tata-Lockheed, will support this initiative.
Furthermore, strong regulations will be essential; from 2027 onwards, all new critical infrastructure- such as semiconductor fabs, defence corridors, and 5G networks- must incorporate quantum-safe designs, with a 100 % accelerated depreciation on capital costs. These measures could collectively turn a potential crisis into India’s most significant industrial achievement.
Our Sputnik Moment
In 1957, Sputnik’s launch prompted the US to create NASA and land on the moon within 12 years. Today, India faces a similar critical juncture with the quantum threat. If proactive steps are taken now, Indian factories- once copying German designs and Japanese standards- can leapfrog ahead to develop the world’s first fully quantum-secure industrial infrastructure.
Imagine exporting machines labelled “Quantum-Safe by Design,” along with electric vehicles and fighter components, while Western nations struggle to update outdated protocols. This challenge goes beyond security; it’s about safeguarding sovereignty.
Time is critical. By 2035, Indian manufacturing will either lead in the post-quantum era or become a cautionary tale of broken encryption. India must be prepared- unbreakable, unstoppable, and proudly Made in India- when the time comes.
