No. DSA is broken by Shor’s algorithm on a sufficiently large quantum computer, whatever the key size. Data protected today can be recorded now and decrypted later.

DSA: quantum risk, deadlines and replacements

Legacy finite-field signature algorithm. No longer approved by NIST for generating signatures.

At a glance

Quantum risk	Quantum-vulnerable
Used for	Digital signature
Post-quantum algorithm	No

Positions and deadlines by authority

Authority	Position	Effective	Scope	Details
NIST	Disallowed	in force	all variants	FIPS 186-5: signature generation no longer approved; verification of existing signatures only.

Recommended replacements

ML-DSA

Sources

FIPS 186-5 — Digital Signature Standard (DSS) · NIST

Catalog version 2026-09-28. Every position links to its primary source; draft documents are labelled as such.

At a glance

Positions and deadlines by authority

Recommended replacements

Sources

Frequently Asked Questions