[英]Validating AWS Cognito JWT in a ASP.NET Core 6 gRPC service
由於某種原因,AWS cognito 提供的 JWT (id) 令牌沒有在我的 gRPC 服務上通過令牌驗證,我一直得到未經身份驗證的響應。
這與默認的 JwtBearer 選項有關嗎?
gRPC 服務 Program.cs:
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Server.Kestrel.Core;
using Microsoft.IdentityModel.Tokens;
var builder = WebApplication.CreateBuilder();
builder.WebHost.ConfigureKestrel(options =>
{
options.ListenLocalhost(5000, o => o.Protocols = HttpProtocols.Http2);
});
builder.Services.AddAuthentication(x =>
{
x.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
x.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer(options =>
{
options.TokenValidationParameters = new TokenValidationParameters
{
ValidIssuer = "https://cognito-idp.us-east-1.amazonaws.com/us-east-1_bX1jng7q2",
ValidateIssuerSigningKey = true,
ValidateIssuer = true,
ValidateLifetime = true,
ValidAudience = "2c744fhbdu94inn8u4sv4kg0ft",
ValidateAudience = true,
RoleClaimType = "cognito:groups"
};
options.MetadataAddress = "https://cognito-idp.us-east-1.amazonaws.com/us-east-1_bX1jng7q2/.well-known/openid-configuration";
});
builder.Services.AddAuthorization();
builder.Services.AddGrpc();
var app = builder.Build();
app.UseAuthentication();
app.UseAuthorization();
app.MapGrpcService<GreeterService>();
app.Run();
客戶:
try
{
var greeterClient = new Greeter.GreeterClient(channel);
// id token
string id_token = "eyJraWQiOiJ4Qkk0MUNXYjdPUGtROGk2RWlhK1hQWlpjZ0ZcL0dOSFIwbFYyTTdLNVJhND0iLCJhbGciOiJSUzI1NiJ9.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.acGpo3owsd7gEvRtSTCijcRoIz4MP4MN8JUxBgM8mD8Oo-LBQam2uM2NxTtEygfx6MIWJMc9tNylv4GMm53bdrqBXCFeuYGiCdvdP4FvdFKkgwBV6Bzw7t0orN-P0zyrouDKW4NWIz2lUBvaOWE8j_fSdMhSsOlbbByDZH6mrNgugSWIXaF_frwIn2SjhMPnK4VO07uTdXMBiGvgkWH0JJidlU_vc9hjU33f";
// access token
string access_token = "eyJraWQiOiJPOWlVVWpWVjkrTTdZMXE4c0dieG9RWTNrUXB4S3oyNEZXbERiekN2Nm5zPSIsImFsZyI6IlJTMjU2In0.eyJzdWIiOiI4M2FhY2U1Mi05NTJjLTQyMmEtODdkYy1iOWI1MDkyNGNmYjkiLCJjb2duaXRvOmdyb3VwcyI6WyJBZG1pbiJdLCJpc3MiOiJodHRwczpcL1wvY29nbml0by1pZHAudXMtZWFzdC0xLmFtYXpvbmF3cy5jb21cL3VzLWVhc3QtMV9iWDFqbmc3cTIiLCJjbGllbnRfaWQiOiIyYzc0NGZoYmR1OTRpbm44dTRzdjRrZzBmdCIsIm9yaWdpbl9qdGkiOiIyNTBlNDAzMi1lNmE1LTQwMzYtOWMyMC1hZDhmNTBjYTk1YjUiLCJldmVudF9pZCI6ImE4YmZhYWJlLTBkMjYtNDYzNC04M2YwLWM2YTc5OWM4YTEzZiIsInRva2VuX3VzZSI6ImFjY2VzcyIsInNjb3BlIjoiYXdzLmNvZ25pdG8uc2lnbmluLnVzZXIuYWRtaW4iLCJhdXRoX3RpbWUiOjE2NDkwNjMxOTAsImV4cCI6MTY0OTA2Njc5MCwiaWF0IjoxNjQ5MDYzMTkwLCJqdGkiOiI0YzhlYjg3OC04OTM0LTRkNTAtYWM2ZS0wZDZkYmYwNDY3YjYiLCJ1c2VybmFtZSI6IjgzYWFjZTUyLTk1MmMtNDIyYS04N2RjLWI5YjUwOTI0Y2ZiOSJ9.NTMlSa2xpQvMrmzqWYjK6449G9Hvp97JqhjsSE7dmNY5lo62XypyEpji6mCFCWlyD-b6om0mHmYNNknrG0UuD5dodMEI9AHK2u42jxzeQEndwkIEY827VUAOlHztdO3F4rsvT_P0TZmj4_3CvOladmd9KlW8ppWK5ZoFWUFniaFJOxUdfi6A-lBnJX2TxL1eEvLrLs6M5-HBOWLi8AekMsCc0aUrHPVzVTi9LUIjGXWmd6IkiG6HikC";
var headers = new Metadata();
headers.Add("Authorization", $"Bearer {access_token}");
var greeterResponse = await greeterClient.SayHelloAsync(new HelloRequest { Name = "John Doe" }, headers);
Console.WriteLine("Response Recieved: {0}", greeterResponse.Message);
}
catch (RpcException ex)
{
Console.WriteLine("{0} :: {1}", ex.StatusCode, ex.Message);
}
異常: System.Exception: Status(StatusCode="Uauthenticated", Detail="Bad gRPC response. HTTP status code: 401") ---> Grpc.Core.RpcException: Status(StatusCode="Uauthenticated", Detail="Bad gRPC 響應。HTTP 狀態碼:401")
此外,您知道,這只是一個測試池,上面列出的 id 並不敏感,如此處所述
使用 TokenValidationParameters.IssuerSigningKeyResolver:
builder.Services.AddAuthentication(x =>
{
x.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
x.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer(options =>
{
options.TokenValidationParameters = new TokenValidationParameters
{
IssuerSigningKeyResolver = async (s, securityToken, identifier, parameters) =>
{
// get JsonWebKeySet from AWS
ConfigurationManager<OpenIdConnectConfiguration> configurationManager =
new ConfigurationManager<OpenIdConnectConfiguration>(parameters.ValidIssuer + "/.well-known/jwks.json", new OpenIdConnectConfigurationRetriever());
OpenIdConnectConfiguration openIdConnectConfiguration = await configurationManager.GetConfigurationAsync(CancellationToken.None).ConfigureAwait(false);
return openIdConnectConfiguration.SigningKeys;
},
ValidIssuer = "https://cognito-idp.us-east-1.amazonaws.com/us-east-1_bX1jng7q2",
ValidateIssuerSigningKey = true,
ValidateIssuer = true,
ValidateLifetime = true,
ValidAudience = "2c744fhbdu94inn8u4sv4kg0ft",
ValidateAudience = true,
RoleClaimType = "cognito:groups"
};
});
或原始方式:
builder.Services.AddAuthentication(x =>
{
x.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
x.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer(options =>
{
options.TokenValidationParameters = new TokenValidationParameters
{
IssuerSigningKeyResolver = (s, securityToken, identifier, parameters) =>
{
// get JsonWebKeySet from AWS
var json = new WebClient().DownloadString(parameters.ValidIssuer + "/.well-known/jwks.json");
// serialize the result
var keys = JsonConvert.DeserializeObject<JsonWebKeySet>(json).Keys;
// cast the result to be the type expected by IssuerSigningKeyResolver
return (IEnumerable<SecurityKey>)keys;
},
ValidIssuer = "https://cognito-idp.us-east-1.amazonaws.com/us-east-1_bX1jng7q2",
ValidateIssuerSigningKey = true,
ValidateIssuer = true,
ValidateLifetime = true,
ValidAudience = "2c744fhbdu94inn8u4sv4kg0ft",
ValidateAudience = true,
RoleClaimType = "cognito:groups"
};
});
查看更多: 如何使用 .AddJwtBearer() 在 .NET Core Web API 中驗證 AWS Cognito JWT
通過查找錯誤信息,很明顯是token值有問題,導致驗證失敗。
最重要的一點,當我閱讀帖子時,我忽略了您用於訪問服務的 id 令牌。 我對Azure AD很熟悉,我認為你應該使用訪問令牌來訪問。這應該是解決這個問題的關鍵。
在.NET 6 =>
builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
.AddJwtBearer(options =>
{
options.TokenValidationParameters = new TokenValidationParameters
{
IssuerSigningKeyResolver = (s, securityToken, identifier, parameters) =>
{
var keys = new HttpClient().GetFromJsonAsync<JsonWebKeySet>(parameters.ValidIssuer + "/.well-known/jwks.json");
return (IEnumerable<SecurityKey>)keys;
},
ValidIssuer = "https://cognito-idp.{REGION}.amazonaws.com/{USER_POOL_ID}",
ValidateIssuerSigningKey = true,
ValidateIssuer = true,
ValidateLifetime = true,
ValidAudience = "{APP_CLIENT_ID}",
ValidateAudience = true
};
});
嗯......原來我使用的是Microsoft.IdentityModel.Tokens包而不是System.IdentityModel.Tokens.Jwt
這就是在.NET 6上對我有用的方法
我創建了一個擴展方法
public static async Task AddAuthenticationSupport(this IServiceCollection services, ConfigurationManager configurationManager)
{
var validIssuer = configurationManager["ModuleConfiguration:Infrastructure:Cognito:ValidIssuer"];
var validAudience = configurationManager["ModuleConfiguration:Infrastructure:Cognito:ClientId"];
var httpClient = new HttpClient();
var webKeySetJson = await httpClient.GetStringAsync($"{validIssuer}/.well-known/jwks.json");
services.AddAuthentication(o =>
{
o.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
o.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
o.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer(options =>
{
options.TokenValidationParameters = new TokenValidationParameters
{
IssuerSigningKeyResolver = (s, securityToken, identifier, parameters) =>
{
var jsonWebKeySet = new JsonWebKeySet(webKeySetJson);
return jsonWebKeySet?.GetSigningKeys();
},
ValidIssuer = validIssuer,
ValidateIssuerSigningKey = true,
ValidateIssuer = true,
ValidateLifetime = true,
ValidateAudience = true,
AudienceValidator = (audiences, securityToken, validationParameters) =>
{
//This is necessary because Cognito tokens doesn't have "aud" claim. Instead the audience is set in "client_id"
var castedToken = securityToken as JwtSecurityToken;
var clientId = castedToken?.Payload["client_id"]?.ToString();
return validAudience.Equals(clientId);
}
};
});
services.AddAuthorization();
}
然后在Program.cs
上添加以下行
await builder.Services.AddAuthenticationSupport(builder.Configuration);
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