验证 Azure AD JWT 访问令牌时出错-解网

问：

我有一个使用 Msal 库获取的 Azure AD JWT 令牌，但当我尝试验证此令牌时，会出现以下问题：

客户端：SharePoint Web 部件

const config = {
 auth: {
     clientId: "xxxxx",
     authority: "https://login.microsoftonline.com/yyyyyy"
 }
};

const myMSALObj = new UserAgentApplication(config);

let accessTokenRequest = {
 scopes: ["user.read"],
 loginHint: this.context.pageContext.user.loginName,
 extraQueryParameters: {domain_hint: 'organizations'}
}

myMSALObj.acquireTokenSilent(accessTokenRequest).then(
function(accessTokenResponse) { 
// Acquire token silent success 
let accessToken = accessTokenResponse.accessToken;

另一方面，我有一个服务器应用程序（Java），用于验证访问令牌

验证者：

<dependency>
  <groupId>com.microsoft.azure</groupId>
  <artifactId>azure-storage</artifactId>
  <version>8.6.2</version>
</dependency>

<dependency>
  <groupId>com.auth0</groupId>
  <artifactId>jwks-rsa</artifactId>
  <version>0.11.0</version>
</dependency>

法典

 String token="<your AD token>";
    DecodedJWT jwt = JWT.decode(token);
    System.out.println(jwt.getKeyId());

    JwkProvider provider = null;
    Jwk jwk =null;
    Algorithm algorithm=null;

    try {
       provider = new UrlJwkProvider(new URL("https://login.microsoftonline.com/common/discovery/keys"));
      jwk = provider.get(jwt.getKeyId());
      algorithm = Algorithm.RSA256((RSAPublicKey) jwk.getPublicKey(), null);
      algorithm.verify(jwt);// if the token signature is invalid, the 
    method will throw SignatureVerificationException
     } catch (MalformedURLException e) {
         e.printStackTrace();
     } catch (JwkException e) {
        e.printStackTrace();
     }catch(SignatureVerificationException e){
       System.out.println(e.getMessage());
     }

我的问题是，当我尝试验证此令牌时，我收到了以下错误：使用算法验证时令牌的签名无效：SHA256withRSA

我被困在这个，如果令牌是正确的，为什么我有这个错误？

问候

Azure Azure-active-Directory

如果令牌是使用 RSA256 算法签名的，那么你是否知道 Azure AD 是否使用默认设置来颁发令牌，或者是否使用自定义签名算法和/或自定义证书设置了自定义配置？如果您使用的是自定义证书，请确保有关该证书的以下内容： 1.未过期。2. 它是由公共机构颁发的。如果它是由私人机构颁发的，那么你需要自定义代码来信任该颁发者。

0赞 vcima 3/31/2020

嗨，@Toby，是的“alg”：“RS256”，对吗？

答：

2赞 Tony Ju 4/1/2020 #1

我注意到范围是，这意味着令牌用于 Microsoft 图形 API。user.read

请注意：

如果你是获取 Graph 令牌的客户端，假设它是你永远不应该看的加密字符串 - 有时它会。我们为 Graph 使用一种特殊的令牌格式，他们知道如何验证 - 如果访问令牌不适合您，则不应查看它们。

可以使用此访问令牌直接调用 Microsoft 图形 API，如果令牌错误，您将收到来自 Microsoft API 服务器的响应。

参考：

https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/issues/609#issuecomment-529537264

    // Obtaining token provider
    let tp = await this.context.aadTokenProviderFactory.getTokenProvider();
    let config = tp["_defaultConfiguration"];
    let aadInstanceUrl = config.aadInstanceUrl[length - 1] === "/" ? config.aadInstanceUrl : config.aadInstanceUrl + "/";

    // Config context
    let ctx = new AuthenticationContext({
        tenant: tenantId,
        clientId: clientId,
        instance: aadInstanceUrl,
        redirectUri: config.redirectUri,
        extraQueryParameter: "login_hint=" + encodeURIComponent(loginName),
        loadFrameTimeout: 60000
    });

    // Check user
    let cu = ctx.getCachedUser();

    console.log("USER", cu, loginName, ctx);
    if (cu && cu.userName.toLowerCase() !== loginName.toLowerCase()) {
        console.log("Clean user cache");
        ctx.clearCache();
    }

    // Login process
    console.log("Login process");

    // Obtaining Azure AD Token
    let azureADToken = this.acquireToken(ctx, clientId);

要验证令牌，请执行以下操作：

String token = "XXXXXX";

DecodedJWT jwt = JWT.decode(token);
System.out.println(jwt.getKeyId());

JwkProvider provider = null;
Jwk jwk = null;
Algorithm algorithm = null;

try {
    provider = new UrlJwkProvider(new URL("https://login.microsoftonline.com/common/discovery/keys"));
    jwk = provider.get(jwt.getKeyId());
    algorithm = Algorithm.RSA256((RSAPublicKey) jwk.getPublicKey(), null);
    algorithm.verify(jwt);// if the token signature is invalid, the method will throw
    // SignatureVerificationException
} catch (MalformedURLException e) {
    e.printStackTrace();
} catch (JwkException e) {
    e.printStackTrace();
} catch (SignatureVerificationException e) {

    System.out.println(e.getMessage());

}

System.out.println("works!");

使用此依赖项：

  <dependencies>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-api</artifactId>
            <version>0.11.1</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-impl</artifactId>
            <version>0.11.1</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-jackson</artifactId> <!-- or jjwt-gson if Gson is preferred -->
            <version>0.11.1</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.9.10</version>
            <type>bundle</type>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.8</version>
            <type>bundle</type>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.9.10</version>
            <type>bundle</type>
        </dependency>
        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.9.3</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-json-jackson</artifactId>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet</artifactId>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
        </dependency>
        <!-- JUNIT -->
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>

        <dependency>
            <groupId>com.microsoft.azure</groupId>
            <artifactId>azure-storage</artifactId>
            <version>8.6.2</version>
        </dependency>

        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>jwks-rsa</artifactId>
            <version>0.11.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.auth0/java-jwt -->
        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>java-jwt</artifactId>
            <version>3.10.2</version>
        </dependency>

    </dependencies>

验证 Azure AD JWT 访问令牌时出错

Error validating Azure AD JWT access token

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