Files
Joseph Doherty d82d3451e7 feat(secrets): build G-8 KEK rotation (RewrapAll); design+plan G-7 clustered replication
G-8 (KEK rotation) — built in ZB.MOM.WW.Secrets, lib 0.1.2->0.1.3:
- ISecretCipher.Rewrap(row, oldKek, newKek): re-wraps the per-secret DEK only
  (bodies never re-encrypted; revision/timestamps preserved -> invisible to
  cluster LWW). Fail-closed on wrong old-KEK id, wrong key bytes, and malformed
  wraps; DEK zeroed on all paths.
- ISecretStore.ApplyRewrapAsync(rewrappedRow, expectedCurrentWrappedDek):
  updates only the 4 wrap columns + kek_id, compare-and-swap on the current
  wrapped DEK so a concurrent set/rotate cannot corrupt a row (closes a
  review-caught TOCTOU).
- KekRotationService.RewrapAllAsync + RewrapReport: enumerate all rows incl.
  tombstones, idempotent/resumable skip-already-current, bounded CAS-retry,
  fail-closed on unknown/identical KEK.
- `secret rewrap-all` CLI verb: key material only via env-var name / file path,
  JSON counts report; README section + operator runbook.

Verified: full offline suite green (82 core + 15 UI, 0 regressions) + end-to-end
CLI smoke + adversarial crypto review (all 7 categories PASS; TOCTOU fixed).

G-7 (clustered replication) — designed + planned, no code:
- Fork resolved to build Option A (shared SQL-Server ISecretStore); Akka
  replicator ZB.MOM.WW.Secrets.Akka is a deferred phase-2. Design doc +
  executable plan + .tasks.json under docs/plans/2026-07-17-secrets-g7-*.

Tracking: components/secrets/GAPS.md + CLAUDE.md secrets row updated.
2026-07-17 02:55:43 -04:00

50 lines
1.7 KiB
C#

using System.Text;
using ZB.MOM.WW.Secrets.Abstractions;
namespace ZB.MOM.WW.Secrets.Ui.Tests.Fakes;
/// <summary>
/// A trivial, reversible <see cref="ISecretCipher"/> stand-in for UI tests. It does not perform real
/// cryptography — it simply carries the UTF-8 plaintext in <see cref="StoredSecret.Ciphertext"/> so a
/// test can prove the editor's encrypt→upsert round-trips back to the entered value. Never used in
/// production. A <see cref="FailDecrypt"/> flag lets a test drive the decrypt-failure reveal path.
/// </summary>
public sealed class FakeCipher : ISecretCipher
{
/// <summary>When <c>true</c>, <see cref="Decrypt"/> throws to exercise the failure path.</summary>
public bool FailDecrypt { get; set; }
/// <inheritdoc />
public StoredSecret Encrypt(SecretName name, string plaintext, SecretContentType contentType)
=> new()
{
Name = name,
ContentType = contentType,
Ciphertext = Encoding.UTF8.GetBytes(plaintext),
Nonce = [1, 2, 3],
Tag = [4, 5, 6],
WrappedDek = [7, 8, 9],
WrapNonce = [10, 11, 12],
WrapTag = [13, 14, 15],
KekId = "fake-kek",
Revision = 0,
CreatedUtc = default,
UpdatedUtc = default,
};
/// <inheritdoc />
public string Decrypt(StoredSecret secret)
{
if (FailDecrypt)
{
throw new SecretDecryptionException("Fake decrypt failure.");
}
return Encoding.UTF8.GetString(secret.Ciphertext);
}
/// <inheritdoc />
public StoredSecret Rewrap(StoredSecret secret, IMasterKeyProvider oldKek, IMasterKeyProvider newKek)
=> secret with { KekId = newKek.KekId };
}