Payment and customer APIs
Prioritise public APIs, partner gateways, mTLS, webhook signatures and payment data flows that carry regulated or long-lived data.
Financial services guide
Post-Quantum Cryptography for Financial Services
Financial services organisations need PQC planning because payment data, customer records, transaction evidence, identity systems and supplier-managed cryptography can remain sensitive for years. Start with evidence, then build a migration backlog.
Updated: 19 June 2026|13 min read
Digital identity and signing
Map ECDSA and RSA use in certificates, tokens, transaction signing, code signing, documents and audit evidence.
ICT supplier dependency
Record which cloud, payment, identity, CDN, WAF, HSM, SaaS and managed-service providers control cryptographic functions.
Operational resilience evidence
Treat PQC as part of the wider ICT risk and resilience evidence base, not just a future algorithm swap.
Why Financial Services Should Start Now
Banks, insurers, payment firms, investment platforms and fintechs depend heavily on public-key cryptography: TLS, mTLS, APIs, certificates, signing workflows, identity tokens, secure administration and third-party ICT providers.
DORA raises the operational bar for ICT risk management and third-party dependency evidence. PQC migration should sit inside that same governance model: inventory, supplier evidence, testing, continuity planning and measurable remediation.
The immediate target is not replacing every algorithm. It is knowing where quantum-vulnerable cryptography protects long-lived customer, transaction and business data, and which dependencies can be piloted safely.
Financial Services PQC Roadmap
1. External baseline
- -Scan public websites, investor portals, API hostnames, VPN portals and customer login surfaces.
- -Save TLS and security-header evidence before deeper inventory work.
- -Identify which endpoints are controlled by CDN, WAF, API gateway or cloud supplier settings.
2. Cryptographic inventory
- -List TLS, mTLS, VPN, SSO, certificates, token signing, document signing, code signing and HSM dependencies.
- -Rank systems by data lifetime, transaction impact, regulatory exposure and customer impact.
- -Connect the inventory to ICT asset and supplier registers used for operational resilience.
3. Supplier evidence
- -Ask critical ICT suppliers for NIST FIPS 203, 204 and 205 roadmaps.
- -Record whether hybrid ML-KEM is supported, enabled by default, opt-in or unavailable.
- -Add PQC questions to due diligence for renewals and new technology purchases.
4. Pilots and governance
- -Pilot hybrid ML-KEM transport where compatibility is measurable and rollback is controlled.
- -Test ML-DSA or SLH-DSA for signing workflows outside production before changing trust chains.
- -Report inventory coverage, supplier evidence and migration blockers to risk governance forums.
Primary References
Financial Services PQC FAQ
Does DORA explicitly require post-quantum cryptography?
DORA is an ICT risk and digital operational resilience regulation for financial entities. It does not name a specific PQC algorithm, but financial services teams should include quantum-vulnerable cryptography in ICT risk, supplier and resilience planning.
What should a bank or fintech scan first?
Start with public websites, customer login domains, API hostnames, payment callback endpoints and VPN portals. Those surfaces are visible, measurable and often controlled by suppliers.
Which financial systems are hardest to migrate?
Long-lived signature workflows, HSM-backed keys, legacy payment integrations, partner APIs, embedded devices and externally managed trust services usually need more planning than public TLS endpoints.
Need the DORA Mapping?
If your PQC work is being driven by EU digital operational resilience, use the dedicated DORA guide to connect scanner evidence, ICT supplier questions and cryptographic inventory records.
Start With a Public Baseline
Scan a public endpoint, save the result in a free account and use it as the first evidence item in your financial services cryptographic inventory.
Free readiness account
Keep This Guide Connected to a Real Website Scan
A PQC guide is more useful when it is attached to current evidence. Create a free account, add a public domain now or later, and keep a repeatable baseline for TLS, security headers and visible post-quantum readiness.
No cardStart the free evidence path without a paid plan.
Saved scanKeep the public endpoint result after the browser session.
Rescan laterRerun after TLS, header or provider changes.
Prefer to scan first? Open the free quantum security scanner.