blocks|key|5039899|text|我今天也遇到了同样的问题；事实证明，编写您自己的IClientAssertionCertificate的具体实现非常容易。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5039900|using+Microsoft.IdentityModel.Clients.ActiveDirectory;
using+Microsoft.IdentityModel.Tokens;
using+System.Security.Cryptography;
using+System.Security.Cryptography.X509Certificates;
using+System.Text;

namespace+app{

++++internal+class+ClientAssertionCertificate+:+IClientAssertionCertificate+{

++++++++private+X509Certificate2+certificate;
++++++++public+string+ClientId+{+get;+private+set;+}

++++++++public+string+Thumbprint+{
++++++++++++get+{
++++++++++++++++return+Base64UrlEncoder.Encode(certificate.GetCertHash());
++++++++++++}
++++++++}

++++++++public+ClientAssertionCertificate(string+clientId,+X509Certificate2+certificate)+{
++++++++++++ClientId+=+clientId;
++++++++++++this.certificate+=+certificate;
++++++++}

++++++++public+byte[]+Sign(string+message)+{
++++++++++++using+(var+key+=+certificate.GetRSAPrivateKey())+{
++++++++++++++++return+key.SignData(Encoding.UTF8.GetBytes(message),+HashAlgorithmName.SHA256,+RSASignaturePadding.Pkcs1);
++++++++++++}
++++++++}
++++}
}|code-block|syntax|javascript|5039901|除了引用包Microsoft.IdentityModel.Clients.ActiveDirectory，之外，还需要添加包Microsoft.IdentityModel.Tokens+(对于Base64UrlEncoder)|5039902|来源：https://blog.mastykarz.nl/azure-ad-app-only-access-token-using-certificate-dotnet-core/|offset|length|5039903|entityMap|0|LINK|mutability|MUTABLE|url|https://blog.mastykarz.nl/azure-ad-app-only-access-token-using-certificate-dotnet-core/^0|0|0|0|3|2F|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

I had the same issue today; turns out it is pretty easy to write your own concrete implementation of IClientAssertionCertificate

<pre><code>using Microsoft.IdentityModel.Clients.ActiveDirectory;
using Microsoft.IdentityModel.Tokens;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Text;

namespace app{

 internal class ClientAssertionCertificate : IClientAssertionCertificate {

 private X509Certificate2 certificate;
 public string ClientId { get; private set; }

 public string Thumbprint {
 get {
 return Base64UrlEncoder.Encode(certificate.GetCertHash());
 }
 }

 public ClientAssertionCertificate(string clientId, X509Certificate2 certificate) {
 ClientId = clientId;
 this.certificate = certificate;
 }

 public byte[] Sign(string message) {
 using (var key = certificate.GetRSAPrivateKey()) {
 return key.SignData(Encoding.UTF8.GetBytes(message), HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
 }
 }
 }
}
</code></pre>

In addition to referencing package Microsoft.IdentityModel.Clients.ActiveDirectory, you'll also need to add the package Microsoft.IdentityModel.Tokens (for the Base64UrlEncoder)

Source: <a href="https://blog.mastykarz.nl/azure-ad-app-only-access-token-using-certificate-dotnet-core/" rel="noreferrer">https://blog.mastykarz.nl/azure-ad-app-only-access-token-using-certificate-dotnet-core/</a>

blocks|key|3358253|text|只是现在看到这个帖子的人的最新消息。这现在可以在最新的.NETStandard+2.0版本中使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3358254|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Just an update to anyone seeing this post now. This is now available in the latest .NETStandard 2.0 version.

I have an ASP.NET Core application and I am trying to get the access token from AAD using a certificate. I am using <code>Microsoft.IdentityModel.Clients.ActiveDirectory</code> assembly of version 3.13.5.907. But it seems that the <code>ClientAssertionCertificate</code> class has been removed from this assembly. The interface <code>IClientAssertionCertificate</code> is available but I can't find any class that is imlpementing it.

In ASP.NET 4.5 I used to use the following code for getting access token from AAD using certificates (<code>Microsoft.IdentityModel.Clients.ActiveDirectory</code> assembly of version 3.13.4.878)

<pre><code>var clientCredential = new ClientAssertionCertificate(_appId, _thumbprint);
var authenticationContext = new AuthenticationContext(authority, false);
var result = await authenticationContext.AcquireTokenAsync(resource, clientCredential);
</code></pre>

Has this class been depreciated in ASP.NET Core or am I missing something?

Can't find ClientAssertionCertificate in ASP.NET Core

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个ASP.NET核心应用程序，我正在尝试使用证书从AAD获取访问令牌。我正在使用3.13.5.907版本的Microsoft.IdentityModel.Clients.ActiveDirectory程序集。但是ClientAssertionCertificate类似乎已经从这个程序集中删除了。接口IClient...

问在ClientAssertionCertificate内核中找不到ASP.NET
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问在ClientAssertionCertificate内核中找不到ASP.NETEN