Top 20 NuGet security Packages

ASP.NET Core integration package for the OpenIddict server services.
System.Net.Http integration package for the OpenIddict validation services.
Library of core security framework for implementing role-based security with integrated Active Directory, local account and database style authentication across various .NET application types.
The package is a part of the Saritasa Tools project. Saritasa.Tools.Common contains various utilities and extensions for DateTime conversion, strings manipulation, validation utils (Guard), parse with default, flow (memoize, retry), collection processing (chunk select), atomic (CAS, swap), strings h...
OAuth2 validation middleware for OWIN/Katana.
.NET Client for CredHub - Base Package
ASP.NET 4.x External Security Provider for CloudFoundry - Owin
ASP.NET Core Identity Integration for Duende IdentityServer
EntityFramework persistence layer for Duende IdentityServer
Utilize state of the art cloud authentication today to mitigate cyber attacks and provide your users a better experience with FusionAPI.
ASP.NET Core security middleware enabling Salesforce authentication.
Essensoft.AspNetCore.Payment
High-performance JWT library. Provides Json Web Token primitives.
An ASP.NET Core middleware for request filtering.
This library contains various ways of detecting an emulated, debugged, monkey, tainted, Android environment. Some of the methods are adapted from previously seen malware on other operating systems, others are just random ideas.
A .Net port of jBCrypt implemented in C#. It uses a variant of the Blowfish encryption algorithm’s keying schedule, and introduces a work factor, which allows you to determine how expensive the hash function will be, allowing the algorithm to be "future-proof".
Helper library for identity & access control in .NET 4.0/WIF and .NET 4.5 (includes MVC4 and Web API support).
This library provides shared functionality for the NWebsec ASP.NET security libraries.
SecureBlackbox - the comprehensive suite of components and classes for digital security and secure networking. NOTE: this package contains only libraries. For samples and documentation, please, download the full package from the product web site.
Library of base Windows Form and WPF Window extensions and dialogs, including those needed for implementing role-based security inside a Windows application.