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Microsoft Azure Identity Library for Python

Project description

Azure Identity client library for Python

The Azure Identity library provides Azure Active Directory (AAD) token authentication through a set of convenient TokenCredential implementations. It enables Azure SDK clients to authenticate with AAD, while also allowing other Python apps to authenticate with AAD work and school accounts, Microsoft personal accounts (MSA), and other Identity providers like AAD B2C service.

Source code | Package (PyPI) | API reference documentation | Azure Active Directory documentation

Disclaimer

Azure SDK Python packages support for Python 2.7 has ended 01 January 2022. For more information and questions, please refer to https://github.com/Azure/azure-sdk-for-python/issues/20691

Getting started

Install the package

Install Azure Identity with pip:

pip install azure-identity

Prerequisites

  • an Azure subscription
  • Python 3.6 or a recent version of Python 3 (this library doesn't support end-of-life versions)

Authenticate during local development

When debugging and executing code locally it is typical for developers to use their own accounts for authenticating calls to Azure services. The Azure Identity library supports authenticating through developer tools to simplify local development.

Authenticate via Visual Studio Code

Developers using Visual Studio Code can use the Azure Account extension to authenticate via the editor. Apps using DefaultAzureCredential or VisualStudioCodeCredential can then use this account to authenticate calls in their app when running locally.

To authenticate in Visual Studio Code, ensure version 0.9.11 or earlier of the Azure Account extension is installed. To track progress toward supporting newer extension versions, see this GitHub issue. Once installed, open the Command Palette and run the Azure: Sign In command.

Authenticate via the Azure CLI

DefaultAzureCredential and AzureCliCredential can authenticate as the user signed in to the Azure CLI. To sign in to the Azure CLI, run az login. On a system with a default web browser, the Azure CLI will launch the browser to authenticate a user.

When no default browser is available, az login will use the device code authentication flow. This can also be selected manually by running az login --use-device-code.

Key concepts

Credentials

A credential is a class which contains or can obtain the data needed for a service client to authenticate requests. Service clients across the Azure SDK accept a credential instance when they are constructed, and use that credential to authenticate requests.

The Azure Identity library focuses on OAuth authentication with Azure Active Directory (AAD). It offers a variety of credential classes capable of acquiring an AAD access token. See the Credential classes section below for a list of this library's credential classes.

DefaultAzureCredential

DefaultAzureCredential is appropriate for most applications which will run in the Azure Cloud because it combines common production credentials with development credentials. DefaultAzureCredential attempts to authenticate via the following mechanisms in this order, stopping when one succeeds:

DefaultAzureCredential authentication flow

  1. Environment - DefaultAzureCredential will read account information specified via environment variables and use it to authenticate.
  2. Managed Identity - If the application is deployed to an Azure host with Managed Identity enabled, DefaultAzureCredential will authenticate with it.
  3. Visual Studio Code - If a user has signed in to the Visual Studio Code Azure Account extension, DefaultAzureCredential will authenticate as that user.
  4. Azure CLI - If a user has signed in via the Azure CLI az login command, DefaultAzureCredential will authenticate as that user.
  5. Azure PowerShell - If a user has signed in via Azure PowerShell's Connect-AzAccount command, DefaultAzureCredential will authenticate as that user.
  6. Interactive browser - If enabled, DefaultAzureCredential will interactively authenticate a user via the default browser. This is disabled by default.

DefaultAzureCredential is intended to simplify getting started with the SDK by handling common scenarios with reasonable default behaviors. Developers who want more control or whose scenario isn't served by the default settings should use other credential types.

Managed Identity

DefaultAzureCredential and ManagedIdentityCredential support managed identity authentication in any hosting environment which supports managed identities, such as (this list is not exhaustive):

Examples

The following examples are provided below:

Authenticate with DefaultAzureCredential

More details on configuring your environment to use the DefaultAzureCredential can be found in the class's reference documentation.

This example demonstrates authenticating the BlobServiceClient from the azure-storage-blob library using DefaultAzureCredential.

from azure.identity import DefaultAzureCredential
from azure.storage.blob import BlobServiceClient

default_credential = DefaultAzureCredential()

client = BlobServiceClient(account_url, credential=default_credential)

Enable interactive authentication with DefaultAzureCredential

Interactive authentication is disabled in the DefaultAzureCredential by default and can be enabled with a keyword argument:

DefaultAzureCredential(exclude_interactive_browser_credential=False)

When enabled, DefaultAzureCredential falls back to interactively authenticating via the system's default web browser when no other credential is available.

Specify a user assigned managed identity for DefaultAzureCredential

Many Azure hosts allow the assignment of a user assigned managed identity. To configure DefaultAzureCredential to authenticate a user assigned identity, use the managed_identity_client_id keyword argument:

DefaultAzureCredential(managed_identity_client_id=client_id)

Alternatively, set the environment variable AZURE_CLIENT_ID to the identity's client ID.

Define a custom authentication flow with ChainedTokenCredential

DefaultAzureCredential is generally the quickest way to get started developing applications for Azure. For more advanced scenarios, ChainedTokenCredential links multiple credential instances to be tried sequentially when authenticating. It will try each chained credential in turn until one provides a token or fails to authenticate due to an error.

The following example demonstrates creating a credential which will attempt to authenticate using managed identity, and fall back to authenticating via the Azure CLI when a managed identity is unavailable. This example uses the EventHubProducerClient from the azure-eventhub client library.

from azure.eventhub import EventHubProducerClient
from azure.identity import AzureCliCredential, ChainedTokenCredential, ManagedIdentityCredential

managed_identity = ManagedIdentityCredential()
azure_cli = AzureCliCredential()
credential_chain = ChainedTokenCredential(managed_identity, azure_cli)

client = EventHubProducerClient(namespace, eventhub_name, credential_chain)

Async credentials

This library includes a set of async APIs. To use the async credentials in azure.identity.aio, you must first install an async transport, such as aiohttp. See azure-core documentation for more information.

Async credentials should be closed when they're no longer needed. Each async credential is an async context manager and defines an async close method. For example:

from azure.identity.aio import DefaultAzureCredential

# call close when the credential is no longer needed
credential = DefaultAzureCredential()
...
await credential.close()

# alternatively, use the credential as an async context manager
credential = DefaultAzureCredential()
async with credential:
  ...

This example demonstrates authenticating the asynchronous SecretClient from azure-keyvault-secrets with an asynchronous credential.

from azure.identity.aio import DefaultAzureCredential
from azure.keyvault.secrets.aio import SecretClient

default_credential = DefaultAzureCredential()
client = SecretClient("https://my-vault.vault.azure.net", default_credential)

Cloud configuration

Credentials default to authenticating to the Azure Active Directory endpoint for Azure Public Cloud. To access resources in other clouds, such as Azure Government or a private cloud, configure credentials with the authority argument. AzureAuthorityHosts defines authorities for well-known clouds:

from azure.identity import AzureAuthorityHosts

DefaultAzureCredential(authority=AzureAuthorityHosts.AZURE_GOVERNMENT)

Not all credentials require this configuration. Credentials which authenticate through a development tool, such as AzureCliCredential, use that tool's configuration. Similarly, VisualStudioCodeCredential accepts an authority argument but defaults to the authority matching VS Code's "Azure: Cloud" setting.

Credential classes

Authenticate Azure hosted applications

credential usage
DefaultAzureCredential simplified authentication to get started developing applications for the Azure cloud
ChainedTokenCredential define custom authentication flows composing multiple credentials
EnvironmentCredential authenticate a service principal or user configured by environment variables
ManagedIdentityCredential authenticate the managed identity of an Azure resource

Authenticate service principals

credential usage
ClientSecretCredential authenticate a service principal using a secret
CertificateCredential authenticate a service principal using a certificate

Authenticate users

credential usage
InteractiveBrowserCredential interactively authenticate a user with the default web browser
DeviceCodeCredential interactively authenticate a user on a device with limited UI
UsernamePasswordCredential authenticate a user with a username and password (does not support multi-factor authentication)

Authenticate via development tools

credential usage
AzureCliCredential authenticate as the user signed in to the Azure CLI
VisualStudioCodeCredential authenticate as the user signed in to the Visual Studio Code Azure Account extension

Environment variables

DefaultAzureCredential and EnvironmentCredential can be configured with environment variables. Each type of authentication requires values for specific variables:

Service principal with secret

variable name value
AZURE_CLIENT_ID id of an Azure Active Directory application
AZURE_TENANT_ID id of the application's Azure Active Directory tenant
AZURE_CLIENT_SECRET one of the application's client secrets

Service principal with certificate

variable name value
AZURE_CLIENT_ID id of an Azure Active Directory application
AZURE_TENANT_ID id of the application's Azure Active Directory tenant
AZURE_CLIENT_CERTIFICATE_PATH path to a PEM or PKCS12 certificate file including private key (without password protection)

Username and password

variable name value
AZURE_CLIENT_ID id of an Azure Active Directory application
AZURE_USERNAME a username (usually an email address)
AZURE_PASSWORD that user's password

Configuration is attempted in the above order. For example, if values for a client secret and certificate are both present, the client secret will be used.

Troubleshooting

See the troubleshooting guide for details on how to diagnose various failure scenarios.

Error handling

Credentials raise CredentialUnavailableError when they're unable to attempt authentication because they lack required data or state. For example, EnvironmentCredential will raise this exception when its configuration is incomplete.

Credentials raise azure.core.exceptions.ClientAuthenticationError when they fail to authenticate. ClientAuthenticationError has a message attribute which describes why authentication failed. When raised by DefaultAzureCredential or ChainedTokenCredential, the message collects error messages from each credential in the chain.

For more details on handling specific Azure Active Directory errors please refer to the Azure Active Directory error code documentation.

Logging

This library uses the standard logging library for logging. Credentials log basic information, including HTTP sessions (URLs, headers, etc.) at INFO level. These log entries do not contain authentication secrets.

Detailed DEBUG level logging, including request/response bodies and header values, is not enabled by default. It can be enabled with the logging_enable argument, for example:

credential = DefaultAzureCredential(logging_enable=True)

CAUTION: DEBUG level logs from credentials contain sensitive information. These logs must be protected to avoid compromising account security.

Next steps

Client library support

Client and management libraries listed on the Azure SDK release page which support Azure AD authentication accept credentials from this library. You can learn more about using these libraries in their documentation, which is linked from the release page.

Known issues

This library doesn't support Azure AD B2C.

For other open issues, refer to the library's GitHub repository.

Provide feedback

If you encounter bugs or have suggestions, please open an issue.

Contributing

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.microsoft.com.

When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information, see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.

Impressions

Release History

1.10.0 (2022-04-28)

Breaking Changes

These changes do not impact the API of stable versions such as 1.9.0. Only code written against a beta version such as 1.10.0b1 may be affected.

  • validate_authority support is not available in 1.10.0.

Other Changes

  • Supported msal-extensions version 1.0.0 (#23927)

1.10.0b1 (2022-04-07)

Features Added

  • Added validate_authority support for msal client (#22625)

1.9.0 (2022-04-05)

Features Added

  • Added PII logging if logging.DEBUG is enabled. (#23203)

Breaking Changes

These changes do not impact the API of stable versions such as 1.8.0. Only code written against a beta version such as 1.9.0b1 may be affected.

  • validate_authority support is not available in 1.9.0.

Bugs Fixed

  • Added check on content from msal response. (#23483)
  • Fixed the issue that async OBO credential does not refresh correctly. (#21981)

Other Changes

  • Removed resource_id, please use identity_config instead.
  • Renamed argument name get_assertion to func for ClientAssertionCredential.

1.9.0b1 (2022-03-08)

Features Added

  • Added validate_authority support for msal client (#22625)
  • Added resource_id support for user-assigned managed identity (#22329)
  • Added ClientAssertionCredential support (#22328)
  • Updated App service API version to "2019-08-01" (#23034)

1.8.0 (2022-03-01)

Bugs Fixed

  • Handle injected "tenant_id" and "claims" (#23138)

    "tenant_id" argument in get_token() method is only supported by:

    • AuthorizationCodeCredential
    • AzureCliCredential
    • AzurePowerShellCredential
    • InteractiveBrowserCredential
    • DeviceCodeCredential
    • EnvironmentCredential
    • UsernamePasswordCredential

    it is ignored by other types of credentials.

Other Changes

  • Python 2.7 is no longer supported. Please use Python version 3.6 or later.

1.7.1 (2021-11-09)

Bugs Fixed

  • Fix multi-tenant auth using async AadClient (#21289)

1.7.0 (2021-10-14)

Breaking Changes

These changes do not impact the API of stable versions such as 1.6.0. Only code written against a beta version such as 1.7.0b1 may be affected.

  • The allow_multitenant_authentication argument has been removed and the default behavior is now as if it were true. The multitenant authentication feature can be totally disabled by setting the environment variable AZURE_IDENTITY_DISABLE_MULTITENANTAUTH to True.
  • azure.identity.RegionalAuthority is removed.
  • regional_authority argument is removed for CertificateCredential and ClientSecretCredential.
  • AzureApplicationCredential is removed.
  • client_credential in the ctor of OnBehalfOfCredential is removed. Please use client_secret or client_certificate instead.
  • Make user_assertion in the ctor of OnBehalfOfCredential a keyword only argument.

1.7.0b4 (2021-09-09)

Features Added

  • CertificateCredential accepts certificates in PKCS12 format (#13540)
  • OnBehalfOfCredential supports the on-behalf-of authentication flow for accessing resources on behalf of users (#19308)
  • DefaultAzureCredential allows specifying the client ID of interactive browser via keyword argument interactive_browser_client_id (#20487)

Other Changes

  • Added context manager methods and close() to credentials in the azure.identity namespace. At the end of a with block, or when close() is called, these credentials close their underlying transport sessions. (#18798)

1.6.1 (2021-08-19)

Other Changes

  • Persistent cache implementations are now loaded on demand, enabling workarounds when importing transitive dependencies such as pywin32 fails (#19989)

1.7.0b3 (2021-08-10)

Breaking Changes

These changes do not impact the API of stable versions such as 1.6.0. Only code written against a beta version such as 1.7.0b1 may be affected.

  • Renamed AZURE_POD_IDENTITY_TOKEN_URL to AZURE_POD_IDENTITY_AUTHORITY_HOST. The value should now be a host, for example "http://169.254.169.254" (the default).

Bugs Fixed

  • Fixed import of azure.identity.aio.AzureApplicationCredential (#19943)

Other Changes

  • Added CustomHookPolicy to credential HTTP pipelines. This allows applications to initialize credentials with raw_request_hook and raw_response_hook keyword arguments. The value of these arguments should be a callback taking a PipelineRequest and PipelineResponse, respectively. For example: ManagedIdentityCredential(raw_request_hook=lambda request: print(request.http_request.url))
  • Reduced redundant ChainedTokenCredential and DefaultAzureCredential logging. On Python 3.7+, credentials invoked by these classes now log debug rather than info messages. (#18972)
  • Persistent cache implementations are now loaded on demand, enabling workarounds when importing transitive dependencies such as pywin32 fails (#19989)

1.7.0b2 (2021-07-08)

Features Added

  • InteractiveBrowserCredential keyword argument login_hint enables pre-filling the username/email address field on the login page (#19225)
  • AzureApplicationCredential, a default credential chain for applications deployed to Azure (#19309)

Bugs Fixed

  • azure.identity.aio.ManagedIdentityCredential is an async context manager that closes its underlying transport session at the end of a with block

Other Changes

  • Most credentials can use tenant ID values returned from authentication challenges, enabling them to request tokens from the correct tenant. This behavior is optional and controlled by a new keyword argument, allow_multitenant_authentication. (#19300)
    • When allow_multitenant_authentication is False, which is the default, a credential will raise ClientAuthenticationError when its configured tenant doesn't match the tenant specified for a token request. This may be a different exception than was raised by prior versions of the credential. To maintain the prior behavior, set environment variable AZURE_IDENTITY_ENABLE_LEGACY_TENANT_SELECTION to "True".
  • CertificateCredential and ClientSecretCredential support regional STS on Azure VMs by either keyword argument regional_authority or environment variable AZURE_REGIONAL_AUTHORITY_NAME. See azure.identity.RegionalAuthority for possible values. (#19301)
  • Upgraded minimum azure-core version to 1.11.0 and minimum msal version to 1.12.0
  • After IMDS authentication fails, ManagedIdentityCredential raises consistent error messages and uses raise from to propagate inner exceptions (#19423)

1.7.0b1 (2021-06-08)

Beginning with this release, this library requires Python 2.7 or 3.6+.

Added

  • VisualStudioCodeCredential gets its default tenant and authority configuration from VS Code user settings (#14808)

1.6.0 (2021-05-13)

This is the last version to support Python 3.5. The next version will require Python 2.7 or 3.6+.

Added

  • AzurePowerShellCredential authenticates as the identity logged in to Azure PowerShell. This credential is part of DefaultAzureCredential by default but can be disabled by a keyword argument: DefaultAzureCredential(exclude_powershell_credential=True) (#17341)

Fixed

  • AzureCliCredential raises CredentialUnavailableError when the CLI times out, and kills timed out subprocesses
  • Reduced retry delay for ManagedIdentityCredential on Azure VMs

1.6.0b3 (2021-04-06)

Breaking Changes

These changes do not impact the API of stable versions such as 1.5.0. Only code written against a beta version such as 1.6.0b1 may be affected.

  • Removed property AuthenticationRequiredError.error_details

Fixed

  • Credentials consistently retry token requests after connection failures, or when instructed to by a Retry-After header
  • ManagedIdentityCredential caches tokens correctly

Added

  • InteractiveBrowserCredential functions in more WSL environments (#17615)

1.6.0b2 (2021-03-09)

Breaking Changes

These changes do not impact the API of stable versions such as 1.5.0. Only code written against a beta version such as 1.6.0b1 may be affected.

  • Renamed CertificateCredential keyword argument certificate_bytes to certificate_data

  • Credentials accepting keyword arguments allow_unencrypted_cache and enable_persistent_cache to configure persistent caching accept a cache_persistence_options argument instead whose value should be an instance of TokenCachePersistenceOptions. For example:

    # before (e.g. in 1.6.0b1):
    DeviceCodeCredential(enable_persistent_cache=True, allow_unencrypted_cache=True)
    
    # after:
    cache_options = TokenCachePersistenceOptions(allow_unencrypted_storage=True)
    DeviceCodeCredential(cache_persistence_options=cache_options)
    

    See the documentation and samples for more details.

Added

  • New class TokenCachePersistenceOptions configures persistent caching
  • The AuthenticationRequiredError.claims property provides any additional claims required by a user credential's authenticate() method

1.6.0b1 (2021-02-09)

Changed

  • Raised minimum msal version to 1.7.0
  • Raised minimum six version to 1.12.0

Added

  • InteractiveBrowserCredential uses PKCE internally to protect authorization codes
  • CertificateCredential can load a certificate from bytes instead of a file path. To provide a certificate as bytes, use the keyword argument certificate_bytes instead of certificate_path, for example: CertificateCredential(tenant_id, client_id, certificate_bytes=cert_bytes) (#14055)
  • User credentials support Continuous Access Evaluation (CAE)
  • Application authentication APIs from 1.5.0b2

Fixed

  • ManagedIdentityCredential correctly parses responses from the current (preview) version of Azure ML managed identity (#15361)

1.5.0 (2020-11-11)

Breaking Changes

  • Renamed optional CertificateCredential keyword argument send_certificate (added in 1.5.0b1) to send_certificate_chain
  • Removed user authentication APIs added in prior betas. These will be reintroduced in 1.6.0b1. Passing the keyword arguments below generally won't cause a runtime error, but the arguments have no effect. (#14601)
    • Removed authenticate method from DeviceCodeCredential, InteractiveBrowserCredential, and UsernamePasswordCredential
    • Removed allow_unencrypted_cache and enable_persistent_cache keyword arguments from CertificateCredential, ClientSecretCredential, DeviceCodeCredential, InteractiveBrowserCredential, and UsernamePasswordCredential
    • Removed disable_automatic_authentication keyword argument from DeviceCodeCredential and InteractiveBrowserCredential
    • Removed allow_unencrypted_cache keyword argument from SharedTokenCacheCredential
    • Removed classes AuthenticationRecord and AuthenticationRequiredError
  • Removed identity_config keyword argument from ManagedIdentityCredential (was added in 1.5.0b1)

Changed

  • DeviceCodeCredential parameter client_id is now optional. When not provided, the credential will authenticate users to an Azure development application. (#14354)
  • Credentials raise ValueError when constructed with tenant IDs containing invalid characters (#14821)
  • Raised minimum msal version to 1.6.0

Added

  • ManagedIdentityCredential supports Service Fabric (#12705) and Azure Arc (#12702)

Fixed

  • Prevent VisualStudioCodeCredential using invalid authentication data when no user is signed in to Visual Studio Code (#14438)
  • ManagedIdentityCredential uses the API version supported by Azure Functions on Linux consumption hosting plans (#14670)
  • InteractiveBrowserCredential.get_token() raises a clearer error message when it times out waiting for a user to authenticate on Python 2.7 (#14773)

1.5.0b2 (2020-10-07)

Fixed

  • AzureCliCredential.get_token correctly sets token expiration time, preventing clients from using expired tokens (#14345)

Changed

  • Adopted msal-extensions 0.3.0 (#13107)

1.4.1 (2020-10-07)

Fixed

  • AzureCliCredential.get_token correctly sets token expiration time, preventing clients from using expired tokens (#14345)

1.5.0b1 (2020-09-08)

Added

  • Application authentication APIs from 1.4.0b7
  • ManagedIdentityCredential supports the latest version of App Service (#11346)
  • DefaultAzureCredential allows specifying the client ID of a user-assigned managed identity via keyword argument managed_identity_client_id (#12991)
  • CertificateCredential supports Subject Name/Issuer authentication when created with send_certificate=True. The async CertificateCredential (azure.identity.aio.CertificateCredential) will support this in a future version. (#10816)
  • Credentials in azure.identity support ADFS authorities, excepting VisualStudioCodeCredential. To configure a credential for this, configure the credential with authority and tenant_id="adfs" keyword arguments, for example ClientSecretCredential(authority="<your ADFS URI>", tenant_id="adfs"). Async credentials (those in azure.identity.aio) will support ADFS in a future release. (#12696)
  • InteractiveBrowserCredential keyword argument redirect_uri enables authentication with a user-specified application having a custom redirect URI (#13344)

Breaking changes

  • Removed authentication_record keyword argument from the async SharedTokenCacheCredential, i.e. azure.identity.aio.SharedTokenCacheCredential

1.4.0 (2020-08-10)

Added

  • DefaultAzureCredential uses the value of environment variable AZURE_CLIENT_ID to configure a user-assigned managed identity. (#10931)

Breaking Changes

  • Renamed VSCodeCredential to VisualStudioCodeCredential
  • Removed application authentication APIs added in 1.4.0 beta versions. These will be reintroduced in 1.5.0b1. Passing the keyword arguments below generally won't cause a runtime error, but the arguments have no effect.
    • Removed authenticate method from DeviceCodeCredential, InteractiveBrowserCredential, and UsernamePasswordCredential
    • Removed allow_unencrypted_cache and enable_persistent_cache keyword arguments from CertificateCredential, ClientSecretCredential, DeviceCodeCredential, InteractiveBrowserCredential, and UsernamePasswordCredential
    • Removed disable_automatic_authentication keyword argument from DeviceCodeCredential and InteractiveBrowserCredential
    • Removed allow_unencrypted_cache keyword argument from SharedTokenCacheCredential
    • Removed classes AuthenticationRecord and AuthenticationRequiredError
    • Removed identity_config keyword argument from ManagedIdentityCredential

1.4.0b7 (2020-07-22)

  • DefaultAzureCredential has a new optional keyword argument, visual_studio_code_tenant_id, which sets the tenant the credential should authenticate in when authenticating as the Azure user signed in to Visual Studio Code.
  • Renamed AuthenticationRecord.deserialize positional parameter json_string to data.

1.4.0b6 (2020-07-07)

  • AzureCliCredential no longer raises an exception due to unexpected output from the CLI when run by PyCharm (thanks @NVolcz) (#11362)
  • Upgraded minimum msal version to 1.3.0
  • The async AzureCliCredential correctly invokes /bin/sh (#12048)

1.4.0b5 (2020-06-12)

  • Prevent an error on importing AzureCliCredential on Windows caused by a bug in old versions of Python 3.6 (this bug was fixed in Python 3.6.5). (#12014)
  • SharedTokenCacheCredential.get_token raises ValueError instead of ClientAuthenticationError when called with no scopes. (#11553)

1.4.0b4 (2020-06-09)

  • ManagedIdentityCredential can configure a user-assigned identity using any identifier supported by the current hosting environment. To specify an identity by its client ID, continue using the client_id argument. To specify an identity by any other ID, use the identity_config argument, for example: ManagedIdentityCredential(identity_config={"object_id": ".."}) (#10989)
  • CertificateCredential and ClientSecretCredential can optionally store access tokens they acquire in a persistent cache. To enable this, construct the credential with enable_persistent_cache=True. On Linux, the persistent cache requires libsecret and pygobject. If these are unavailable or unusable (e.g. in an SSH session), loading the persistent cache will raise an error. You may optionally configure the credential to fall back to an unencrypted cache by constructing it with keyword argument allow_unencrypted_cache=True. (#11347)
  • AzureCliCredential raises CredentialUnavailableError when no user is logged in to the Azure CLI. (#11819)
  • AzureCliCredential and VSCodeCredential, which enable authenticating as the identity signed in to the Azure CLI and Visual Studio Code, respectively, can be imported from azure.identity and azure.identity.aio.
  • azure.identity.aio.AuthorizationCodeCredential.get_token() no longer accepts optional keyword arguments executor or loop. Prior versions of the method didn't use these correctly, provoking exceptions, and internal changes in this version have made them obsolete.
  • InteractiveBrowserCredential raises CredentialUnavailableError when it can't start an HTTP server on localhost. (#11665)
  • When constructing DefaultAzureCredential, you can now configure a tenant ID for InteractiveBrowserCredential. When none is specified, the credential authenticates users in their home tenants. To specify a different tenant, use the keyword argument interactive_browser_tenant_id, or set the environment variable AZURE_TENANT_ID. (#11548)
  • SharedTokenCacheCredential can be initialized with an AuthenticationRecord provided by a user credential. (#11448)
  • The user authentication API added to DeviceCodeCredential and InteractiveBrowserCredential in 1.4.0b3 is available on UsernamePasswordCredential as well. (#11449)
  • The optional persistent cache for DeviceCodeCredential and InteractiveBrowserCredential added in 1.4.0b3 is now available on Linux and macOS as well as Windows. (#11134)
    • On Linux, the persistent cache requires libsecret and pygobject. If these are unavailable, or libsecret is unusable (e.g. in an SSH session), loading the persistent cache will raise an error. You may optionally configure the credential to fall back to an unencrypted cache by constructing it with keyword argument allow_unencrypted_cache=True.

1.4.0b3 (2020-05-04)

  • EnvironmentCredential correctly initializes UsernamePasswordCredential with the value of AZURE_TENANT_ID (#11127)
  • Values for the constructor keyword argument authority and AZURE_AUTHORITY_HOST may optionally specify an "https" scheme. For example, "https://login.microsoftonline.us" and "login.microsoftonline.us" are both valid. (#10819)
  • First preview of new API for authenticating users with DeviceCodeCredential and InteractiveBrowserCredential (#10612)
    • new method authenticate interactively authenticates a user, returns a serializable AuthenticationRecord
    • new constructor keyword arguments
      • authentication_record enables initializing a credential with an AuthenticationRecord from a prior authentication
      • disable_automatic_authentication=True configures the credential to raise AuthenticationRequiredError when interactive authentication is necessary to acquire a token rather than immediately begin that authentication
      • enable_persistent_cache=True configures these credentials to use a persistent cache on supported platforms (in this release, Windows only). By default they cache in memory only.
  • Now DefaultAzureCredential can authenticate with the identity signed in to Visual Studio Code's Azure extension. (#10472)

1.4.0b2 (2020-04-06)

  • After an instance of DefaultAzureCredential successfully authenticates, it uses the same authentication method for every subsequent token request. This makes subsequent requests more efficient, and prevents unexpected changes of authentication method. (#10349)
  • All get_token methods consistently require at least one scope argument, raising an error when none is passed. Although get_token() may sometimes have succeeded in prior versions, it couldn't do so consistently because its behavior was undefined, and dependened on the credential's type and internal state. (#10243)
  • SharedTokenCacheCredential raises CredentialUnavailableError when the cache is available but contains ambiguous or insufficient information. This causes ChainedTokenCredential to correctly try the next credential in the chain. (#10631)
  • The host of the Active Directory endpoint credentials should use can be set in the environment variable AZURE_AUTHORITY_HOST. See azure.identity.KnownAuthorities for a list of common values. (#8094)

1.3.1 (2020-03-30)

  • ManagedIdentityCredential raises CredentialUnavailableError when no identity is configured for an IMDS endpoint. This causes ChainedTokenCredential to correctly try the next credential in the chain. (#10488)

1.4.0b1 (2020-03-10)

  • DefaultAzureCredential can now authenticate using the identity logged in to the Azure CLI, unless explicitly disabled with a keyword argument: DefaultAzureCredential(exclude_cli_credential=True) (#10092)

1.3.0 (2020-02-11)

  • Correctly parse token expiration time on Windows App Service (#9393)
  • Credentials raise CredentialUnavailableError when they can't attempt to authenticate due to missing data or state (#9372)
  • CertificateCredential supports password-protected private keys (#9434)

1.2.0 (2020-01-14)

  • All credential pipelines include ProxyPolicy (#8945)
  • Async credentials are async context managers and have an async close method (#9090)

1.1.0 (2019-11-27)

  • Constructing DefaultAzureCredential no longer raises ImportError on Python 3.8 on Windows (8294)
  • InteractiveBrowserCredential raises when unable to open a web browser (8465)
  • InteractiveBrowserCredential prompts for account selection (8470)
  • The credentials composing DefaultAzureCredential are configurable by keyword arguments (8514)
  • SharedTokenCacheCredential accepts an optional tenant_id keyword argument (8689)

1.0.1 (2019-11-05)

  • ClientCertificateCredential uses application and tenant IDs correctly (8315)
  • InteractiveBrowserCredential properly caches tokens (8352)
  • Adopted msal 1.0.0 and msal-extensions 0.1.3 (8359)

1.0.0 (2019-10-29)

Breaking changes:

  • Async credentials now default to aiohttp for transport but the library does not require it as a dependency because the async API is optional. To use async credentials, please install aiohttp or see azure-core documentation for information about customizing the transport.
  • Renamed ClientSecretCredential parameter "secret" to "client_secret"
  • All credentials with tenant_id and client_id positional parameters now accept them in that order
  • Changes to InteractiveBrowserCredential parameters
    • positional parameter client_id is now an optional keyword argument. If no value is provided, the Azure CLI's client ID will be used.
    • Optional keyword argument tenant renamed tenant_id
  • Changes to DeviceCodeCredential
    • optional positional parameter prompt_callback is now a keyword argument
    • prompt_callback's third argument is now a datetime representing the expiration time of the device code
    • optional keyword argument tenant renamed tenant_id
  • Changes to ManagedIdentityCredential
    • now accepts no positional arguments, and only one keyword argument: client_id
    • transport configuration is now done through keyword arguments as described in azure-core documentation

Fixes and improvements:

  • Authenticating with a single sign-on shared with other Microsoft applications only requires a username when multiple users have signed in (#8095)
  • DefaultAzureCredential accepts an authority keyword argument, enabling its use in national clouds (#8154)

Dependency changes

1.0.0b4 (2019-10-07)

New features:

  • AuthorizationCodeCredential authenticates with a previously obtained authorization code. See Azure Active Directory's authorization code documentation for more information about this authentication flow.
  • Multi-cloud support: client credentials accept the authority of an Azure Active Directory authentication endpoint as an authority keyword argument. Known authorities are defined in azure.identity.KnownAuthorities. The default authority is for Azure Public Cloud, login.microsoftonline.com (KnownAuthorities.AZURE_PUBLIC_CLOUD). An application running in Azure Government would use KnownAuthorities.AZURE_GOVERNMENT instead:
from azure.identity import DefaultAzureCredential, KnownAuthorities
credential = DefaultAzureCredential(authority=KnownAuthorities.AZURE_GOVERNMENT)

Breaking changes:

  • Removed client_secret parameter from InteractiveBrowserCredential

Fixes and improvements:

  • UsernamePasswordCredential correctly handles environment configuration with no tenant information (#7260)
  • user realm discovery requests are sent through credential pipelines (#7260)

1.0.0b3 (2019-09-10)

New features:

  • SharedTokenCacheCredential authenticates with tokens stored in a local cache shared by Microsoft applications. This enables Azure SDK clients to authenticate silently after you've signed in to Visual Studio 2019, for example. DefaultAzureCredential includes SharedTokenCacheCredential when the shared cache is available, and environment variable AZURE_USERNAME is set. See the README for more information.

Dependency changes:

1.0.0b2 (2019-08-05)

Breaking changes:

  • Removed azure.core.Configuration from the public API in preparation for a revamped configuration API. Static create_config methods have been renamed _create_config, and will be removed in a future release.

Dependency changes:

  • Adopted azure-core 1.0.0b2
    • If you later want to revert to a version requiring azure-core 1.0.0b1, of this or another Azure SDK library, you must explicitly install azure-core 1.0.0b1 as well. For example: pip install azure-core==1.0.0b1 azure-identity==1.0.0b1
  • Adopted MSAL 0.4.1
  • New dependency for Python 2.7: mock

New features:

  • Added credentials for authenticating users:
  • DeviceCodeCredential
  • InteractiveBrowserCredential
  • UsernamePasswordCredential
  • async versions of these credentials will be added in a future release

1.0.0b1 (2019-06-28)

Version 1.0.0b1 is the first preview of our efforts to create a user-friendly and Pythonic authentication API for Azure SDK client libraries. For more information about preview releases of other Azure SDK libraries, please visit https://aka.ms/azure-sdk-preview1-python.

This release supports service principal and managed identity authentication. See the documentation for more details. User authentication will be added in an upcoming preview release.

This release supports only global Azure Active Directory tenants, i.e. those using the https://login.microsoftonline.com authentication endpoint.

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