Azure.Identity (.NET)

Biblioteca de autenticação para clientes do Azure SDK usando Microsoft Entra ID (anteriormente Azure AD).

Instalação

dotnet add package Azure.Identity

# For ASP.NET Core
dotnet add package Microsoft.Extensions.Azure

# For brokered authentication (Windows)
dotnet add package Azure.Identity.Broker

Versões Atuais: Estável v1.17.1, Prévia v1.18.0-beta.2

Variáveis de Ambiente

Service Principal com Segredo

AZURE_CLIENT_ID=<application-client-id>
AZURE_TENANT_ID=<directory-tenant-id>
AZURE_CLIENT_SECRET=<client-secret-value>

Service Principal com Certificado

AZURE_CLIENT_ID=<application-client-id>
AZURE_TENANT_ID=<directory-tenant-id>
AZURE_CLIENT_CERTIFICATE_PATH=<path-to-pfx-or-pem>
AZURE_CLIENT_CERTIFICATE_PASSWORD=<certificate-password>  # Optional

Identidade Gerenciada

AZURE_CLIENT_ID=<user-assigned-managed-identity-client-id>  # Only for user-assigned

DefaultAzureCredential

A credencial recomendada para a maioria dos cenários. Tenta vários métodos de autenticação na seguinte ordem:

Uso Básico

using Azure.Identity;
using Azure.Storage.Blobs;

var credential = new DefaultAzureCredential();
var blobClient = new BlobServiceClient(
    new Uri("https://myaccount.blob.core.windows.net"),
    credential);

ASP.NET Core com Injeção de Dependência

using Azure.Identity;
using Microsoft.Extensions.Azure;

builder.Services.AddAzureClients(clientBuilder =>
{
    clientBuilder.AddBlobServiceClient(
        new Uri("https://myaccount.blob.core.windows.net"));
    clientBuilder.AddSecretClient(
        new Uri("https://myvault.vault.azure.net"));
    
    // Uses DefaultAzureCredential by default
    clientBuilder.UseCredential(new DefaultAzureCredential());
});

Personalizando DefaultAzureCredential

var credential = new DefaultAzureCredential(
    new DefaultAzureCredentialOptions
    {
        ExcludeEnvironmentCredential = true,
        ExcludeManagedIdentityCredential = false,
        ExcludeVisualStudioCredential = false,
        ExcludeAzureCliCredential = false,
        ExcludeInteractiveBrowserCredential = false, // Enable interactive
        TenantId = "<tenant-id>",
        ManagedIdentityClientId = "<user-assigned-mi-client-id>"
    });

Tipos de Credencial

ManagedIdentityCredential (Produção)

// System-assigned managed identity
var credential = new ManagedIdentityCredential(ManagedIdentityId.SystemAssigned);

// User-assigned by client ID
var credential = new ManagedIdentityCredential(
    ManagedIdentityId.FromUserAssignedClientId("<client-id>"));

// User-assigned by resource ID
var credential = new ManagedIdentityCredential(
    ManagedIdentityId.FromUserAssignedResourceId("<resource-id>"));

ClientSecretCredential

var credential = new ClientSecretCredential(
    tenantId: "<tenant-id>",
    clientId: "<client-id>",
    clientSecret: "<client-secret>");

var client = new SecretClient(
    new Uri("https://myvault.vault.azure.net"),
    credential);

ClientCertificateCredential

var certificate = X509CertificateLoader.LoadCertificateFromFile("MyCertificate.pfx");
var credential = new ClientCertificateCredential(
    tenantId: "<tenant-id>",
    clientId: "<client-id>",
    certificate);

ChainedTokenCredential (Cadeia Personalizada)

var credential = new ChainedTokenCredential(
    new ManagedIdentityCredential(),
    new AzureCliCredential());

var client = new SecretClient(
    new Uri("https://myvault.vault.azure.net"),
    credential);

Credenciais de Desenvolvedor

// Azure CLI
var credential = new AzureCliCredential();

// Azure PowerShell
var credential = new AzurePowerShellCredential();

// Azure Developer CLI (azd)
var credential = new AzureDeveloperCliCredential();

// Visual Studio
var credential = new VisualStudioCredential();

// Interactive Browser
var credential = new InteractiveBrowserCredential();

Configuração Baseada em Ambiente

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