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[Core] Enable token cache encryption on MacOS #20636

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[Core] Enable token cache encryption on MacOS #20636

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8a81c6d
Enable token cache encryption on MacOS
jiasli Dec 7, 2021
9ea9ff4
Update _profile.py
jiasli Dec 8, 2021
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4 changes: 2 additions & 2 deletions src/azure-cli-core/azure/cli/core/_profile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -860,8 +860,8 @@ def _create_identity_instance(cli_ctx, *args, **kwargs):
"""Lazily import and create Identity instance to avoid unnecessary imports."""
from .auth.identity import Identity

# Only enable encryption for Windows (for now).
fallback = sys.platform.startswith('win32')
# Only enable encryption for Windows and MacOS (for now).
fallback = sys.platform.startswith('win32') or sys.platform.startswith('darwin')
# encrypt_token_cache affects both MSAL token cache and service principal entries.
encrypt = cli_ctx.config.getboolean('core', 'encrypt_token_cache', fallback=fallback)

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15 changes: 14 additions & 1 deletion src/azure-cli-core/azure/cli/core/auth/persistence.py
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Expand Up @@ -21,6 +21,8 @@
# Files extensions for encrypted and plaintext persistence
file_extensions = {True: '.bin', False: '.json'}

KEYCHAIN_SERVICE_NAME = 'azure-cli'


def load_persisted_token_cache(location, encrypt):
persistence = build_persistence(location, encrypt)
Expand All @@ -38,16 +40,27 @@ def build_persistence(location, encrypt):
logger.debug("build_persistence: location=%r, encrypt=%r", location, encrypt)
if encrypt:
if sys.platform.startswith('win'):
# For FilePersistenceWithDataProtection, location is where the credential is stored.
logger.debug("Initializing FilePersistenceWithDataProtection.")
return FilePersistenceWithDataProtection(location)
if sys.platform.startswith('darwin'):
return KeychainPersistence(location, "my_service_name", "my_account_name")
# For KeychainPersistence, location is only used as a signal for the credential's last modified time.
# The credential is stored in Keychain identified by (service_name, account_name) combination.
# msal-extensions automatically computes account_name from signal_location.
# https://github.com/AzureAD/microsoft-authentication-extensions-for-python/pull/103
logger.debug("Initializing KeychainPersistence")
return KeychainPersistence(location, service_name=KEYCHAIN_SERVICE_NAME)
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You probably already know that, this line won't work until AzureAD/microsoft-authentication-extensions-for-python#103 being released. So, please help review and approve my PR there (otherwise I will not give an approval to your PR here :-D)

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@jiasli jiasli Dec 8, 2021 •
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I have installed the dev code of msal-extensions and it works perfectly.

if sys.platform.startswith('linux'):
# TODO: Support token cache encryption on Linux
logger.debug("Initializing LibsecretPersistence.")
return LibsecretPersistence(
location,
schema_name="my_schema_name",
attributes={"my_attr1": "foo", "my_attr2": "bar"}
)
else:
# For FilePersistence, location is where the credential is stored.
logger.debug("Initializing FilePersistence")
return FilePersistence(location)


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