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-rw-r--r--src/cryptography/x509/extensions.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/cryptography/x509/extensions.py b/src/cryptography/x509/extensions.py
index 0aa67212..87d2de1c 100644
--- a/src/cryptography/x509/extensions.py
+++ b/src/cryptography/x509/extensions.py
@@ -191,6 +191,14 @@ class AuthorityKeyIdentifier(object):
authority_cert_serial_number=None
)
+ @classmethod
+ def from_issuer_subject_key_identifier(cls, ski):
+ return cls(
+ key_identifier=ski.value.digest,
+ authority_cert_issuer=None,
+ authority_cert_serial_number=None
+ )
+
def __repr__(self):
return (
"<AuthorityKeyIdentifier(key_identifier={0.key_identifier!r}, "