# RSA PKCS#1 v1.5 (signatures) — NIST cryptographic algorithm deprecation schedule: what is approved, deprecated, and disallowed, and when

For RSA PKCS#1 v1.5 (signatures), purpose is digital signature; current status is Approved; planned status is Deprecated after 2030, Disallowed after 2035; replacement is ML-DSA (FIPS 204); source document is IR 8547, Section 3 (via EncryptionConsulting summary), recorded from its source on 2026-08-15.

- **Algorithm:** RSA PKCS#1 v1.5 (signatures)
- **Purpose:** digital signature
- **Current status:** Approved
- **Planned status:** Deprecated after 2030, Disallowed after 2035
- **Replacement:** ML-DSA (FIPS 204)
- **Source document:** IR 8547, Section 3 (via EncryptionConsulting summary)

## What the source says

> ECDSA , EdDSA, RSA-PSS, RSA PKCS#1 v1.5), and key-establishment schemes including RSA key transport, elliptic-curve Diffie-Hellman (ECDH), and finite-field Diffie-Hellman. All are broken by Shor

## Source

- https://www.encryptionconsulting.com/education-center/nist-ir-8547-sp-800-131a-algorithm-transitions/

Last verified: 2026-08-15. Review by: 2027-02-11.
Part of [NIST cryptographic algorithm deprecation schedule: what is approved, deprecated, and disallowed, and when](https://referencesource.org/nist-cryptographic-algorithm-deprecation-schedule/).