为什么 WS-Federation 需要 Microsoft.AspNetCore.DataProtection.Abstractions NuGet 包？

Question

我一直在学习如何让 WS-Federation 在没有身份的情况下工作，并且对于初始设置，我使用了以下指南：https://docs.microsoft.com/en-us/aspnet/core/security/authentication/ws-federation?view=aspnetcore-3.0

在很长一段时间内，我一直遇到错误，但偶然发现了一个解决方案，即包含 Microsoft.AspNetCore.DataProtection.Abstractions NuGet 包。

指南中的任何地方都没有提到这一点，我发现只有一篇文章提到过与 WS-Federation 相关的内容：https://github.com/dotnet/aspnetcore/issues/18639

这个 NuGet 包有什么作用，为什么需要它来使 WS-Federation 工作？这甚至是正确的设置方法吗？

Answer 1

可以找到源代码on github here

实际上，它提供了一个接口IDataProtector 和IDataProtectionProvider。

namespace Microsoft.AspNetCore.DataProtection
{
    /// <summary>
    /// An interface that can provide data protection services.
    /// </summary>
    public interface IDataProtector : IDataProtectionProvider
    {
        /// <summary>
        /// Cryptographically protects a piece of plaintext data.
        /// </summary>
        /// <param name="plaintext">The plaintext data to protect.</param>
        /// <returns>The protected form of the plaintext data.</returns>
        byte[] Protect(byte[] plaintext);

        /// <summary>
        /// Cryptographically unprotects a piece of protected data.
        /// </summary>
        /// <param name="protectedData">The protected data to unprotect.</param>
        /// <returns>The plaintext form of the protected data.</returns>
        /// <exception cref="System.Security.Cryptography.CryptographicException">
        /// Thrown if the protected data is invalid or malformed.
        /// </exception>
        byte[] Unprotect(byte[] protectedData);
    }
}

namespace Microsoft.AspNetCore.DataProtection
{
    /// <summary>
    /// An interface that can be used to create <see cref="IDataProtector"/> instances.
    /// </summary>
    public interface IDataProtectionProvider
    {
        /// <summary>
        /// Creates an <see cref="IDataProtector"/> given a purpose.
        /// </summary>
        /// <param name="purpose">
        /// The purpose to be assigned to the newly-created <see cref="IDataProtector"/>.
        /// </param>
        /// <returns>An IDataProtector tied to the provided purpose.</returns>
        /// <remarks>
        /// The <paramref name="purpose"/> parameter must be unique for the intended use case; two
        /// different <see cref="IDataProtector"/> instances created with two different <paramref name="purpose"/>
        /// values will not be able to decipher each other's payloads. The <paramref name="purpose"/> parameter
        /// value is not intended to be kept secret.
        /// </remarks>
        IDataProtector CreateProtector(string purpose);
    }
}

它们都是 WS-Federation 正在实现（一个或另一个或两者）或正在使用的某些实现的抽象（期望来自某种 DI 容器或构造函数）。无论如何，如果没有它，您将无法正常工作。

设置方法是同时安装nuget包from here