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Dev 2109-sts-kms #291

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5705b07
Dev 2106 (#282)
zhuxiaolong37 Jun 29, 2021
54a942a
Merge branch 'dev-2109' of github.com:aliyun/aliyun-oss-python-sdk
zhuxiaolong37 Sep 8, 2021
cc1c401
Modifying the implementation of KMS encryption with STS
zhuxiaolong37 Sep 8, 2021
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10 changes: 3 additions & 7 deletions oss2/crypto.py
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Original file line number Diff line number Diff line change
Expand Up @@ -304,6 +304,7 @@ class AliKMSProvider(BaseCryptoProvider):

def __init__(self, access_key_id, access_key_secret, region, cmk_id, sts_token=None, passphrase=None,
cipher=utils.AESCTRCipher(), mat_desc=None):
from aliyunsdkcore.auth.credentials import StsTokenCredential

super(AliKMSProvider, self).__init__(cipher=cipher, mat_desc=mat_desc)
if not isinstance(cipher, utils.AESCTRCipher):
Expand All @@ -312,7 +313,8 @@ def __init__(self, access_key_id, access_key_secret, region, cmk_id, sts_token=N
self.custom_master_key_id = cmk_id
self.sts_token = sts_token
self.context = '{"x-passphrase":"' + passphrase + '"}' if passphrase else ''
self.kms_client = client.AcsClient(access_key_id, access_key_secret, region)
credential = StsTokenCredential(access_key_id, access_key_secret, sts_token)
self.kms_client = client.AcsClient(region_id=region, credential=credential)

def get_key(self):
plain_key, encrypted_key = self.__generate_data_key()
Expand Down Expand Up @@ -357,8 +359,6 @@ def __generate_data_key(self):
req.set_KeySpec('AES_256')
req.set_NumberOfBytes(32)
req.set_EncryptionContext(self.context)
if self.sts_token:
req.set_STSToken(self.sts_token)

resp = self.__do(req)

Expand All @@ -372,8 +372,6 @@ def __encrypt_data(self, data):
req.set_KeyId(self.custom_master_key_id)
req.set_Plaintext(data)
req.set_EncryptionContext(self.context)
if self.sts_token:
req.set_STSToken(self.sts_token)

resp = self.__do(req)

Expand All @@ -386,8 +384,6 @@ def __decrypt_data(self, data):
req.set_method(method_type.POST)
req.set_CiphertextBlob(data)
req.set_EncryptionContext(self.context)
if self.sts_token:
req.set_STSToken(self.sts_token)

resp = self.__do(req)
return resp['Plaintext']
Expand Down