From 3b2102af549c1095d5478bb1243ee4cf76b9762b Mon Sep 17 00:00:00 2001
From: Alex Gaynor <alex.gaynor@gmail.com>
Date: Sun, 5 Apr 2020 21:00:55 -0400
Subject: Removed deprecated behavior in AKI.from_issuer_subject_key_identifier
 (#5182)

---
 src/cryptography/utils.py           |  1 -
 src/cryptography/x509/extensions.py | 16 +---------------
 2 files changed, 1 insertion(+), 16 deletions(-)

(limited to 'src')

diff --git a/src/cryptography/utils.py b/src/cryptography/utils.py
index 698b492d..ff4f81d2 100644
--- a/src/cryptography/utils.py
+++ b/src/cryptography/utils.py
@@ -22,7 +22,6 @@ class CryptographyDeprecationWarning(UserWarning):
 # cycle ends.
 PersistentlyDeprecated2017 = CryptographyDeprecationWarning
 PersistentlyDeprecated2019 = CryptographyDeprecationWarning
-DeprecatedIn27 = CryptographyDeprecationWarning
 
 
 def _check_bytes(name, value):
diff --git a/src/cryptography/x509/extensions.py b/src/cryptography/x509/extensions.py
index ad90e9b7..1b96ffd7 100644
--- a/src/cryptography/x509/extensions.py
+++ b/src/cryptography/x509/extensions.py
@@ -8,7 +8,6 @@ import abc
 import datetime
 import hashlib
 import ipaddress
-import warnings
 from enum import Enum
 
 import six
@@ -213,21 +212,8 @@ class AuthorityKeyIdentifier(object):
 
     @classmethod
     def from_issuer_subject_key_identifier(cls, ski):
-        if isinstance(ski, SubjectKeyIdentifier):
-            digest = ski.digest
-        else:
-            digest = ski.value.digest
-            warnings.warn(
-                "Extension objects are deprecated as arguments to "
-                "from_issuer_subject_key_identifier and support will be "
-                "removed soon. Please migrate to passing a "
-                "SubjectKeyIdentifier directly.",
-                utils.DeprecatedIn27,
-                stacklevel=2,
-            )
-
         return cls(
-            key_identifier=digest,
+            key_identifier=ski.digest,
             authority_cert_issuer=None,
             authority_cert_serial_number=None
         )
-- 
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