Question

我花了很多时间让我们的.NET MVC Web应用程序与Azure Active Directory B2C集成，并取得了相当大的成功，使用自定义配置文件允许其他Azure Active Directories的用户登录我们。

现在我想要合并一个API，大致遵循这个过程：

https://github.com/Azure-Samples/active-directory-b2c-dotnet-webapp-and-webapi

我粗略地说，因为我试图将这项功能纳入已经开发数月的应用程序中。

我使用Postman来点击此网址并获取持票人令牌： https://login.microsoftonline.com/ourtenant.onmicrosoft.com/oauth2/token

我使用grant_type = client_credentials，以及在Active Directory中指定的client_id和client_secret（添加在＆＃34; not-B2C＆＃34;应用注册刀片中，因为显然B2C还不支持client_credentials流程）

它似乎工作正常，我收到这样的回复：

{
"token_type": "Bearer",
"expires_in": "3599",
"ext_expires_in": "0",
"expires_on": "1513906161",
"not_before": "1513902261",
"resource": "00000002-0000-0000-c000-000000000000",
"access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6Ing0Nzh4eU9wbHNNMUg3TlhrN1N4MTd4MXVwYyIsImtpZCI6Ing0Nzh4eU9wbHNNMUg3TlhrN1N4MTd4MXVwYyJ9.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.BiXHI5Sp0t2k_npJYdWjclSXGOMbxniR8G1ifOCNUuiNUZRFG6DsbIqkJEBXSFFUxQpvtGkBaI5oF2u4oJ5Ed37thh_gOLJ1TKBaubGusv7vgUVoIk9A5F8H_HeX57zyRR2XU3czdSC4uZC_XpVwV7eT4-Z4bNooL0WJi1ZNx6ZFBC4qktNf7yifc7-iAEEDTWj3clwA81RJwAe9YbUMI3q640sNg8QlrZDiKFzuEuFocHces0bAYSyfLu5cwDw2wvJwQzYEMahjQ3V7RXpqg-YktsUoSTkLOHm7QNrM2Pko8ZAye58O-nTv1gD5yYDZ8st74x4MUHhNZhaR44byjw"

}

当我在Authorization标头中使用此承载令牌进行API调用时，我得到响应：

{"Message":"Authorization has been denied for this request."}

我打开了诊断跟踪，并在输出中找到了这个：

Microsoft.Owin.Security.OAuth.OAuthBearerAuthenticationMiddleware Error: 0 : Authentication failed
System.IdentityModel.Tokens.SecurityTokenSignatureKeyNotFoundException: IDX10500: Signature validation failed. Unable to resolve SecurityKeyIdentifier: 'SecurityKeyIdentifier
    (
    IsReadOnly = False,
    Count = 2,
    Clause[0] = X509ThumbprintKeyIdentifierClause(Hash = 0xC78EFCC723A996C3351FB35793B4B1D7BC75BA97),
    Clause[1] = System.IdentityModel.Tokens.NamedKeySecurityKeyIdentifierClause
    )
', 
token: '{"typ":"JWT","alg":"RS256","x5t":"x478xyOplsM1H7NXk7Sx17x1upc","kid":"x478xyOplsM1H7NXk7Sx17x1upc"}.{"aud":"00000002-0000-0000-c000-000000000000","iss":"https://sts.windows.net/7b65d644-1434-41d4-a1a0-825ef80902d3/","iat":1513901664,"nbf":1513901664,"exp":1513905564,"aio":"Y2NgYPg7bbbRmu/aXjwejXZs73e5AgA=","appid":"6dfed4ed-56d9-4497-83ba-939bf4b78e25","appidacr":"1","idp":"https://sts.windows.net/7b65d644-1434-41d4-a1a0-825ef80902d3/","oid":"1a614c9c-4779-4697-98c4-99cee2ee5dcb","sub":"1a614c9c-4779-4697-98c4-99cee2ee5dcb","tenant_region_scope":"NA","tid":"7b65d644-1434-41d4-a1a0-825ef80902d3","uti":"5nMOpv6eok60JyzWwksuAA","ver":"1.0"}
RawData: eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6Ing0Nzh4eU9wbHNNMUg3TlhrN1N4MTd4MXVwYyIsImtpZCI6Ing0Nzh4eU9wbHNNMUg3TlhrN1N4MTd4MXVwYyJ9.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.mPzogfR2ndo89P-qWIypdPjrrBb0uEOO0Fo-H164C4Rm21zFQpkwVSFe-NP4MtvMnB5fJdhzGxzPDACFHBiQi7k7ZZVGv5bWaIbhGlPmKCQ1j6XaweYp7pm66R-RIsokZvR87nJ4ZkvYJIkuxnXPjChC-3FjsLDf43FKcByDPvvJKpVj48JW9N79vq77HQ2w8bnq172zOUflxGbuC2nDiwzkgWQiFboL-H3LLUxHqZHeE46u7pDSOrE3DSY1F5aPqBq1IDCg6ELcBcaLN27509oAH2rghkvXjHWOs9Nw3tszVoza7CpEGV7fjtSGN874GV_vx-ziqIOf1EgSBPEH6Q'.
   at System.IdentityModel.Tokens.JwtSecurityTokenHandler.ValidateSignature(String token, TokenValidationParameters validationParameters)
   at System.IdentityModel.Tokens.JwtSecurityTokenHandler.ValidateToken(String securityToken, TokenValidationParameters validationParameters, SecurityToken& validatedToken)
   at Microsoft.Owin.Security.Jwt.JwtFormat.Unprotect(String protectedText)
   at Microsoft.Owin.Security.OAuth.OAuthBearerAuthenticationHandler.<AuthenticateCoreAsync>d__0.MoveNext()

我错过了什么？

Answer 1

您链接的示例向您展示了如何使用Azure AD B2C保护和调用Web API。您似乎正在尝试获取Azure AD令牌，然后尝试使用它来登录使用Azure AD B2C保护的API。

虽然Azure AD B2C不支持客户端凭据，但您似乎不需要客户端凭据流。客户端凭据流用于API到API调用。如果要从用户正在登录的应用程序中调用API，则可以使用访问令牌。查看此文档：https://docs.microsoft.com/en-us/azure/active-directory-b2c/active-directory-b2c-access-tokens

B2C OAuth2 API错误：签名验证失败。无法解析SecurityKeyIdentifier：＆＃39; SecurityKeyIdentifier

1 个答案: