---
id: "kerione-keris-strategy-for-post-quantum-security"
type: "paper"
type_label: "Papers and paper collections"
title: "KERI's Strategy for Post-Quantum Security"
maintainer: "Daniel Hardman (Provenant); Sam Smith, PhD (Prosapien)"
authors:
  - "Daniel Hardman (Provenant)"
  - "Sam Smith, PhD (Prosapien)"
date: "2025-10"
year: 2025
reading_level: "practitioner"
reading_level_label: "Practitioner"
reading_level_meaning: "architects, product people and adopters who know identity systems"
evidence: "informative"
evidence_meaning: "an author's paper, deck, tutorial or post explaining the suite"
status: "quiet"
status_meaning: "no change in six to eighteen months; still correct"
access: "public"
access_meaning: "anyone with the link"
topics:
  - "cryptography"
  - "theory"
  - "policy"
roles:
  - "developer"
  - "security-architect"
  - "standards-policy"
  - "business-development"
  - "researcher"
source_url: "https://github.com/SmithSamuelM/Papers/blob/master/whitepapers/KeriStrategyPostQuantumSecurity.pdf"
source_license: null
source_license_note: null
found_on: "keri-one-resources"
kerisse_credit: false
abstract_license: "CC BY 4.0"
abstract_license_url: "https://creativecommons.org/licenses/by/4.0/"
abstract_attribution: "KSKB, the KERISuite Knowledge Base (https://kskb.dev/)"
last_checked: "2026-10-14"
kskb_url: "https://kskb.dev/cards/kerione-keris-strategy-for-post-quantum-security/"
kskb_app_url: "https://kskb.dev/#item/kerione-keris-strategy-for-post-quantum-security"
kskb_record_url: "https://kskb.dev/data/kskb/resources/kerione-keris-strategy-for-post-quantum-security"
kskb_markdown_url: "https://kskb.dev/export/cards/kerione-keris-strategy-for-post-quantum-security.md"
---

# KERI's Strategy for Post-Quantum Security

A ten-page white paper explaining how KERI addresses two quantum threats: a surprise quantum attack on signing keys, met by pre-rotation behind hash digests, and harvest-now-decrypt-later attacks on confidentiality, left to the application layer through out-of-band key exchange or hybrid key encapsulation. It places this within NIST's post-quantum timeline and argues for crypto-agility, for decision makers and practitioners.

Labels: reading level Practitioner; evidence informative (an author's paper, deck, tutorial or post explaining the suite).
Source: https://github.com/SmithSamuelM/Papers/blob/master/whitepapers/KeriStrategyPostQuantumSecurity.pdf (license not recorded).
The abstract is KSKB's own text under Creative Commons Attribution 4.0 (CC BY 4.0), https://creativecommons.org/licenses/by/4.0/; credit KSKB, the KERISuite Knowledge Base (https://kskb.dev/).