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Copy pathsse.py
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110 lines (87 loc) · 3.1 KB
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# -*- coding: utf-8 -*-
# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C) 2018 MinIO, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
minio.sse
~~~~~~~~~~~~~~~~~~~
This module contains core API parsers.
:copyright: (c) 2018 by MinIO, Inc.
:license: Apache 2.0, see LICENSE for more details.
"""
import base64
import hashlib
import json
from .error import (InvalidArgumentError, InvalidSizeError)
class SSE_C(object):
def __init__(self, key):
self.key = key
if len(self.key) != 32:
raise InvalidSizeError("SSE-C keys need to be 256 bit base64 encoded")
def type(self):
return "SSE-C"
def marshal(self):
b64key = base64.b64encode(self.key)
md5 = hashlib.md5()
md5.update(self.key)
md5_key = base64.b64encode(md5.digest()).decode()
keys = {
"X-Amz-Server-Side-Encryption-Customer-Algorithm": "AES256",
"X-Amz-Server-Side-Encryption-Customer-Key": b64key.decode(),
"X-Amz-Server-Side-Encryption-Customer-Key-MD5": md5_key
}
return keys
class copy_SSE_C(object):
def __init__(self, key):
self.key = key
if len(self.key) != 32:
raise InvalidArgumentError("Length of Customer key must be 32 Bytes")
def type(self):
return "copy_SSE-C"
def marshal(self):
b64key = base64.b64encode(self.key)
md5 = hashlib.md5()
md5.update(self.key)
md5_key = base64.b64encode(md5.digest()).decode()
keys = {
"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Algorithm":"AES256",
"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key": b64key.decode(),
"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-MD5": md5_key
}
return keys
class SSE_KMS(object):
def __init__(self, key, context):
self.key = key
self.context = context
def type(self):
return "SSE-KMS"
def marshal(self):
keys = {
"X-Amz-Server-Side-Encryption-Aws-Kms-Key-Id": self.key,
"X-Amz-Server-Side-Encryption":"aws:kms"
}
if self.context:
ctx_str = json.dumps(self.context)
ctx_str = bytes(ctx_str, 'utf-8')
b64key = base64.b64encode(ctx_str)
header = {"X-Amz-Server-Side-Encryption-Context": b64key.decode()}
keys.update(header)
return keys
class SSE_S3(object):
def type(self):
return "SSE-S3"
def marshal(self):
keys = {
"X-Amz-Server-Side-Encryption":"AES256"
}
return keys