Top 20 NuGet Security Packages

Authorization behaviour for MediatR. Extensions for Microsoft.DependencyInjection
FSec is a tool for automatically running FsCheck security tests for .NET programs. The tool provides some basic security testing functionality to discover vulnerabilities.
FSec is a tool for automatically running API security tests for .NET programs. The tool provides some basic security testing functionality to discover vulnerabilities.
Aleph1 Security implementation using the RijndaelManaged algorithm
A CAS client for ASP.NET Core web applications that supports CAS protocol versions 1.0, 2.0, and 3.0.
Components for security
OAuth 1.0 authorized HttpClient, friendly with HttpClientFactory
Library for managing security API-Keys with roles and policies
An OpenIdConnect library for Blazor WebAssembly. This library is a brief wrapper of oidc-client-js (https://github.com/IdentityModel/oidc-client-js)
Extensions.SwashbuckleWithOauth
BouncyCastle portable version with support for .NET 4, .NET Standard 2.0. The fork of Claire Novotny work with support for GOST-2012
Auth0 library for Balzor
Auth0 library for Balzor
Auth0 library for Balzor
Keycloak adapter for Asp net core projects with functionality of authentication, authorization and policy building.
User Authentication with one Provider for CosmosDb Table
Provides you with methods of getting identities from popular socials.
A wrapper that allows you to use the iOS/Android Firebase Auth bindings (by Xamarin) from your netstandard library.
An OAuth 1.0 wrapper designed to easily implement the VATSIM SSO system in C# web applications.
ASP.NET Web API utility library for JwtSharp.