Stratara.Security 4.0.1

Prefix Reserved
dotnet add package Stratara.Security --version 4.0.1
                    
NuGet\Install-Package Stratara.Security -Version 4.0.1
                    
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Stratara.Security" Version="4.0.1" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Stratara.Security" Version="4.0.1" />
                    
Directory.Packages.props
<PackageReference Include="Stratara.Security" />
                    
Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add Stratara.Security --version 4.0.1
                    
#r "nuget: Stratara.Security, 4.0.1"
                    
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#:package Stratara.Security@4.0.1
                    
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.
#addin nuget:?package=Stratara.Security&version=4.0.1
                    
Install as a Cake Addin
#tool nuget:?package=Stratara.Security&version=4.0.1
                    
Install as a Cake Tool

Stratara.Security

Derived. The behaviour described here is specified under openspec/specs/. Those specifications are the source; this page explains and illustrates them.

License: MIT.

Dependency-light key store and envelope encryption for Stratara. Provides a production IKeyStore with KEK-wrapped, versioned per-scope data-encryption keys (rotation, revoke, and crypto-shred), a file-backed master-key provider, and an AES-GCM blob encryptor — referencing only Stratara.Abstractions + BCL crypto. No EF Core, RabbitMQ, Redis, or cloud SDKs in the graph.

Quick start

// appsettings / secrets:
// "Stratara": { "KeyStore": { "MasterKeyBase64": "<openssl rand -base64 32>", "StorePath": "/var/run/secrets/keystore.json" } }

builder.Services.AddStrataraFileKeyStore(builder.Configuration);

// Encrypt a blob bound to a tenant scope + purpose:
var scope = new KeyScope(DataSensitivityLevel.TenantScoped, TenantId: "acme-corp");
await using var encrypted = await encryptor.EncryptAsync(plainStream, scope, purpose: "attachment");
await using var plain = await encryptor.DecryptAsync(encrypted, scope);

What's inside

  • EnvelopeFileKeyStore (IKeyStore) — random 32-byte DEK per scope/version, KEK-wrapped with AES-256-GCM (wrap AAD bound to the key id, so a wrapped DEK can't be moved to another scope). The store file holds only wrapped DEKs + metadata, never plaintext. RotateAsync adds a version; RevokeAsync makes one version undecryptable; EraseScopeAsync deletes all versions for a scope (GDPR Art. 17 crypto-shred). DEKs are zeroed after use; the store file is written 0600 on Unix.
  • FileMasterKeyProvider (IMasterKeyProvider) — KEK from MasterKeyBase64, validated to decode to exactly 32 bytes (AES-256) at startup. The custody seam: swap for an HSM / KMS / vault provider later without touching the stored data.
  • AesGcmSecureBlobEncryptor (ISecureBlobEncryptor) — AES-GCM stream encryption with a purpose-bound AAD ({tenant}||{purpose}) and a versioned, self-describing format (v2 leading byte). Reads legacy streams without the version byte; set Stratara:BlobEncryption:LegacyBlobsCarryPurpose to match the legacy layout.
  • DummyKeyStore — Development-only deterministic fallback (throws outside Development).

Key id schema

{level}:{tenant}:{user}:v{N} — e.g. TenantScoped:acme-corp::v1. GetOrCreateCurrentKeyAsync returns the highest non-revoked version (creating v1 if none); RotateAsync creates v{N+1}.

Dependencies

  • Stratara.Abstractions
  • Stratara.Diagnostics
  • Microsoft.Extensions.{Configuration,DependencyInjection,Hosting,Logging}.Abstractions
  • Microsoft.Extensions.Options (+ Options.ConfigurationExtensions)
Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (2)

Showing the top 2 NuGet packages that depend on Stratara.Security:

Package Downloads
Stratara.Infrastructure

Infrastructure glue for the Stratara framework — authorization decorators, configuration providers, and DI composition helpers that wire Mediator, Outbox, Identity, and EF Core into a hosted app.

Stratara.Testing

Test doubles and assertion helpers for applications built on the Stratara framework — an in-memory IKeyStore, an in-memory IMessageBus, in-memory membership/setting/API-key stores, a preset ISessionContextProvider, deterministic tenant ids, and a given/when/then aggregate rehydration harness. Drop the Postgres/RabbitMQ testcontainers for unit tests.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
4.0.1 0 9/2/2026
4.0.0 141 8/31/2026
4.0.0-preview.1 45 8/31/2026
3.4.0 180 8/28/2026
3.3.0 357 8/25/2026
3.2.3 153 8/22/2026
3.2.2 756 8/14/2026
3.2.1 397 8/2/2026
3.2.0 146 7/18/2026
3.1.7 160 7/1/2026
3.1.6 581 6/22/2026
3.1.5 157 6/22/2026
3.1.4 1,620 6/15/2026
3.1.3 163 6/10/2026
3.1.2 162 6/5/2026
3.1.1 879 6/1/2026
3.1.0 134 5/30/2026

### Added

- **Bundles about one aggregate are now applied one at a time within a process, a handler can say
 "not yet", and the workers' parallelism is configurable.** The projection worker and the saga
 worker open one consumer per processor on a shared queue, so two bundles published milliseconds
 apart — the fact that creates an entity and the first fact about it — landed on two consumers and
 ran at the same time, and whichever finished first won. A projection that then found no row for
 the follow-up could only warn and acknowledge a fact it never applied, or throw and have the
 bundle discarded; either way the read model lost the fact until a replay. The command worker has
 never had this problem, because it takes a per-aggregate lock before it runs a command.

 Both workers now take the same lock, keyed on the streams the bundle's events belong to. Bundles
 about different aggregates still run in parallel; bundles about one aggregate queue behind each
 other. The guarantee is per process — two replicas consuming the same subscription do not
 serialise against each other — and the delivery guarantee now says so explicitly.

 The lock serialises but does not order, so the residual case gets a second chance:
 `PrecedingFactMissingException(streamId, eventTypeName)` in `Stratara.Abstractions` is the one
 exception the workers retry — five attempts from 100 ms doubling, about three seconds in all,
 under the new named policy `ResilienceNames.PrecedingFact`, with every aggregate lock released
 between attempts so the creating fact can land in the gap. Once the retries are exhausted the
 bundle fails as any unhandled failure does, and the warning logged on each attempt
 (`104_010` for projections, `110_005` for sagas) names the stream and the event type. Any other
 exception fails the bundle on the first attempt, as before.

 `Projections:DegreeOfParallelism` and `Sagas:DegreeOfParallelism` set the number of consumers each
 worker opens; a value that is not a positive number means the processor count, and `1` gives a
 worker that applies every bundle in the order the transport delivers it.

 A consumer that changes nothing gets the serialisation and the default parallelism it had. A
 consumer that implements `IMessageBus` itself is unaffected: the retry runs inside the worker
 before the transport sees an outcome. `BucketLockPool`, previously internal to the mediator, is
 now public in `Stratara.Abstractions` so that every worker takes the same lock from the same
 place; the mediator's own copy is gone.

### Changed

- **A published version now announces itself in the repository.** The release workflow gained a
 third job that creates the GitHub release entry for the tag once the packages have reached
 nuget.org, with the changelog section for that version as its notes — the same section the
 packages already carry as their release notes. A prerelease tag is marked as one, so it does not
 displace the current stable version. Until now the release list was maintained by hand and had
 fallen behind: 4.0.0 was on nuget.org while the repository still presented 3.4.0 as current.
 Nothing about what publishes, when, or on whose approval has changed.