OpenBao Rust Crate 0.12.0

OpenBao Rust SDK 0.12.0 Release Notes

Version

• Version: 0.12.0
• Release date: 2026-06-04
• Git tag: v0.12.0
• Git commit: see the signed v0.12.0 tag object
• License: MIT OR Apache-2.0

Summary

0.12.0 is the PKI Tier 1 multi-issuer and authority lifecycle line. The
implemented scope is default issuer/key configuration, named-issuer
issue/sign, root rotation and replacement, standalone key generation,
sign-verbatim operator helpers, revoke-with-key, cluster and auto-tidy config,
and current-doc PKI struct-field expansion.

Remaining 0.12.0 planned work: none. The local release-gate components and
the OpenBao 2.5.4 integration smoke test pass locally, and the external
pentest plus GitHub CI are green for the v0.12.0 tag.

Added

• PKI default issuer and default key configuration read/write helpers for
  /pki/config/issuers and /pki/config/keys.
• Named-issuer PKI issue/sign helpers for
  /pki/issuer/:issuer_ref/issue/:name and
  /pki/issuer/:issuer_ref/sign/:name.
• PKI authority lifecycle helpers for root rotation, root replacement,
  multi-issuer root/intermediate generation, and standalone key generation.
• PKI cluster config, auto-tidy config, and revoke-with-key helpers.
• Operator-gated PKI sign-verbatim helpers for default and explicit issuers.
• Current OpenBao field expansion for PKI role, URL, root/intermediate
  generation, CRL config, and tidy request/status types.
• Endpoint matrix regeneration for the implemented default issuer/key config
  rows, named-issuer issue/sign rows, authority lifecycle rows, config rows,
  revoke-with-key row, and gated sign-verbatim rows, bringing strict typed
  coverage to 555/643 (86.3%).
• Binary raw-byte response content-type validation when callers supply an
  expected Accept header.

Planned Scope

• No remaining 0.12.0 PKI Tier 1 implementation rows are open. Remaining
  planned endpoint rows are assigned to later releases in the endpoint matrix.

Security Notes

• Sign-verbatim helpers must remain behind operator-ops plus
  operator-ops-acknowledged because they bypass normal role constraints.
• Raw private key material must remain SecretString when any PKI response or
  request field can carry it.
• Public certificate, CSR, and CA material may remain String or byte buffers
  when OpenBao documents it as public material.
• The existing Pki::delete_root(PkiRootDeletion::confirm()) decision remains
  the destructive default-root deletion boundary.
• radius-auth is no longer part of default features and now requires
  radius-auth-acknowledged because legacy RADIUS relies on MD5-based
  authenticators.
• Explicit retry backoff now includes bounded jitter by default to avoid
  synchronized retry waves after temporary OpenBao outages.
• LDAP auth path names reject spaces and LDAP filter metacharacters before
  request dispatch.
• Release metadata validation fails if tracked files contain PEM private-key
  headers, and build.rs warns when sensitive-http-test-only is compiled.

Security And Stability Gate

• Release gate script: scripts/release_0_12_gate.sh
• OpenBao integration command: scripts/openbao_integration.sh
• Local validation completed for dependency freshness, formatting, release
  metadata, clippy default/all-features, tests default/all-features, doctests,
  docs, package verification, dependency policy, RustSec audit, SBOM
  generation, and the pinned OpenBao 2.5.4 dev instance smoke test.
• External pentest feedback was reviewed and GitHub CI was green before the
  v0.12.0 tag.