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fix: use 'int.to_bytes' rather than deprecated crypto wrapper #848

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Aug 23, 2021
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fix: use 'int.to_bytes' rather than deprecated crypto wrapper #848

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3 changes: 1 addition & 2 deletions google/auth/crypt/es256.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,6 @@
"""ECDSA (ES256) verifier and signer that use the ``cryptography`` library.
"""

from cryptography import utils
import cryptography.exceptions
from cryptography.hazmat import backends
from cryptography.hazmat.primitives import hashes
Expand Down Expand Up @@ -121,7 +120,7 @@ def sign(self, message):

# Convert ASN1 encoded signature to (r||s) raw signature.
(r, s) = decode_dss_signature(asn1_signature)
return utils.int_to_bytes(r, 32) + utils.int_to_bytes(s, 32)
return r.to_bytes(32, byteorder="big") + s.to_bytes(32, byteorder="big")

@classmethod
def from_string(cls, key, key_id=None):
Expand Down