reorganize and centralize key ID validation
This commit is contained in:
mattsb42-aws
parent
2509237d6c
commit
f4c5dfbdfb
3 changed files with 247 additions and 109 deletions
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@ -1,13 +1,17 @@
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from __future__ import unicode_literals
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import os
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import boto.kms
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from moto.core import BaseBackend, BaseModel
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from moto.core.utils import iso_8601_datetime_without_milliseconds
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from .utils import decrypt, encrypt, generate_key_id, generate_master_key
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import re
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from collections import defaultdict
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from datetime import datetime, timedelta
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import boto.kms
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from moto.core import BaseBackend, BaseModel
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from moto.core.utils import iso_8601_datetime_without_milliseconds
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from .utils import decrypt, encrypt, generate_key_id, generate_master_key
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class Key(BaseModel):
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def __init__(self, policy, key_usage, description, tags, region):
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@ -18,7 +22,7 @@ class Key(BaseModel):
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self.description = description
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self.enabled = True
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self.region = region
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self.account_id = "0123456789012"
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self.account_id = "012345678912"
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self.key_rotation_status = False
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self.deletion_date = None
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self.tags = tags or {}
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@ -116,13 +120,21 @@ class KmsBackend(BaseBackend):
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def list_keys(self):
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return self.keys.values()
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def get_key_id(self, key_id):
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@staticmethod
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def get_key_id(key_id):
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# Allow use of ARN as well as pure KeyId
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return str(key_id).split(r":key/")[1] if r":key/" in str(key_id).lower() else key_id
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if key_id.startswith("arn:") and ":key/" in key_id:
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return key_id.split(":key/")[1]
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def get_alias_name(self, alias_name):
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return key_id
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@staticmethod
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def get_alias_name(alias_name):
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# Allow use of ARN as well as alias name
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return str(alias_name).split(r":alias/")[1] if r":alias/" in str(alias_name).lower() else alias_name
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if alias_name.startswith("arn:") and ":alias/" in alias_name:
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return alias_name.split(":alias/")[1]
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return alias_name
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def any_id_to_key_id(self, key_id):
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"""Go from any valid key ID to the raw key ID.
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@ -11,6 +11,7 @@ from moto.core.responses import BaseResponse
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from .models import kms_backends
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from .exceptions import NotFoundException, ValidationException, AlreadyExistsException, NotAuthorizedException
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ACCOUNT_ID = "012345678912"
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reserved_aliases = [
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'alias/aws/ebs',
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'alias/aws/s3',
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@ -35,7 +36,74 @@ class KmsResponse(BaseResponse):
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def kms_backend(self):
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return kms_backends[self.region]
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def _display_arn(self, key_id):
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if key_id.startswith("arn:"):
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return key_id
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if key_id.startswith("alias/"):
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id_type = ""
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else:
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id_type = "key/"
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return "arn:aws:kms:{region}:{account}:{id_type}{key_id}".format(
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region=self.region, account=ACCOUNT_ID, id_type=id_type, key_id=key_id
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)
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def _validate_cmk_id(self, key_id):
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"""Determine whether a CMK ID exists.
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- raw key ID
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- key ARN
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"""
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is_arn = key_id.startswith("arn:") and ":key/" in key_id
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is_raw_key_id = re.match(r"^[A-F0-9]{8}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{12}$", key_id, re.IGNORECASE)
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if not is_arn and not is_raw_key_id:
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raise NotFoundException("Invalid keyId {key_id}".format(key_id=key_id))
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cmk_id = self.kms_backend.get_key_id(key_id)
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if cmk_id not in self.kms_backend.keys:
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raise NotFoundException("Key '{key_id}' does not exist".format(key_id=self._display_arn(key_id)))
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def _validate_alias(self, key_id):
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"""Determine whether an alias exists.
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- alias name
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- alias ARN
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"""
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error = NotFoundException("Alias {key_id} is not found.".format(key_id=self._display_arn(key_id)))
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is_arn = key_id.startswith("arn:") and ":alias/" in key_id
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is_name = key_id.startswith("alias/")
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if not is_arn and not is_name:
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raise error
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alias_name = self.kms_backend.get_alias_name(key_id)
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cmk_id = self.kms_backend.get_key_id_from_alias(alias_name)
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if cmk_id is None:
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raise error
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def _validate_key_id(self, key_id):
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"""Determine whether or not a key ID exists.
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- raw key ID
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- key ARN
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- alias name
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- alias ARN
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"""
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is_alias_arn = key_id.startswith("arn:") and ":alias/" in key_id
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is_alias_name = key_id.startswith("alias/")
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if is_alias_arn or is_alias_name:
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self._validate_alias(key_id)
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return
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self._validate_cmk_id(key_id)
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def create_key(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_CreateKey.html"""
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policy = self.parameters.get('Policy')
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key_usage = self.parameters.get('KeyUsage')
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description = self.parameters.get('Description')
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@ -46,20 +114,31 @@ class KmsResponse(BaseResponse):
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return json.dumps(key.to_dict())
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def update_key_description(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_UpdateKeyDescription.html"""
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key_id = self.parameters.get('KeyId')
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description = self.parameters.get('Description')
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self._validate_cmk_id(key_id)
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self.kms_backend.update_key_description(key_id, description)
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return json.dumps(None)
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def tag_resource(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_TagResource.html"""
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key_id = self.parameters.get('KeyId')
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tags = self.parameters.get('Tags')
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self._validate_cmk_id(key_id)
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self.kms_backend.tag_resource(key_id, tags)
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return json.dumps({})
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def list_resource_tags(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_ListResourceTags.html"""
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key_id = self.parameters.get('KeyId')
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self._validate_cmk_id(key_id)
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tags = self.kms_backend.list_resource_tags(key_id)
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return json.dumps({
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"Tags": tags,
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@ -68,7 +147,11 @@ class KmsResponse(BaseResponse):
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})
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def describe_key(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_DescribeKey.html"""
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key_id = self.parameters.get('KeyId')
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self._validate_key_id(key_id)
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try:
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key = self.kms_backend.describe_key(
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self.kms_backend.get_key_id(key_id))
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@ -79,6 +162,7 @@ class KmsResponse(BaseResponse):
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return json.dumps(key.to_dict())
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def list_keys(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_ListKeys.html"""
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keys = self.kms_backend.list_keys()
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return json.dumps({
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@ -93,6 +177,7 @@ class KmsResponse(BaseResponse):
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})
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def create_alias(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_CreateAlias.html"""
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alias_name = self.parameters['AliasName']
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target_key_id = self.parameters['TargetKeyId']
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@ -118,27 +203,31 @@ class KmsResponse(BaseResponse):
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raise AlreadyExistsException('An alias with the name arn:aws:kms:{region}:012345678912:{alias_name} '
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'already exists'.format(region=self.region, alias_name=alias_name))
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self._validate_cmk_id(target_key_id)
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self.kms_backend.add_alias(target_key_id, alias_name)
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return json.dumps(None)
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def delete_alias(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_DeleteAlias.html"""
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alias_name = self.parameters['AliasName']
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if not alias_name.startswith('alias/'):
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raise ValidationException('Invalid identifier')
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if not self.kms_backend.alias_exists(alias_name):
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raise NotFoundException('Alias arn:aws:kms:{region}:012345678912:'
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'{alias_name} is not found.'.format(region=self.region, alias_name=alias_name))
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self._validate_alias(alias_name)
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self.kms_backend.delete_alias(alias_name)
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return json.dumps(None)
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def list_aliases(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_ListAliases.html"""
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region = self.region
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# TODO: The actual API can filter on KeyId.
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response_aliases = [
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{
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'AliasArn': u'arn:aws:kms:{region}:012345678912:{reserved_alias}'.format(region=region,
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@ -163,79 +252,76 @@ class KmsResponse(BaseResponse):
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})
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def enable_key_rotation(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_EnableKeyRotation.html"""
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.enable_key_rotation(key_id)
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
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self._validate_cmk_id(key_id)
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self.kms_backend.enable_key_rotation(key_id)
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return json.dumps(None)
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def disable_key_rotation(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_EnableKeyRotation.html"""
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.disable_key_rotation(key_id)
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
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self._validate_cmk_id(key_id)
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self.kms_backend.disable_key_rotation(key_id)
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return json.dumps(None)
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def get_key_rotation_status(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_GetKeyRotationStatus.html"""
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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rotation_enabled = self.kms_backend.get_key_rotation_status(key_id)
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
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self._validate_cmk_id(key_id)
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rotation_enabled = self.kms_backend.get_key_rotation_status(key_id)
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return json.dumps({'KeyRotationEnabled': rotation_enabled})
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def put_key_policy(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_PutKeyPolicy.html"""
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key_id = self.parameters.get('KeyId')
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policy_name = self.parameters.get('PolicyName')
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policy = self.parameters.get('Policy')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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_assert_default_policy(policy_name)
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try:
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self.kms_backend.put_key_policy(key_id, policy)
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
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self._validate_cmk_id(key_id)
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self.kms_backend.put_key_policy(key_id, policy)
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return json.dumps(None)
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def get_key_policy(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_GetKeyPolicy.html"""
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key_id = self.parameters.get('KeyId')
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policy_name = self.parameters.get('PolicyName')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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_assert_default_policy(policy_name)
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try:
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return json.dumps({'Policy': self.kms_backend.get_key_policy(key_id)})
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
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self._validate_cmk_id(key_id)
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return json.dumps({'Policy': self.kms_backend.get_key_policy(key_id)})
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def list_key_policies(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_ListKeyPolicies.html"""
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.describe_key(key_id)
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
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self._validate_cmk_id(key_id)
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self.kms_backend.describe_key(key_id)
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return json.dumps({'Truncated': False, 'PolicyNames': ['default']})
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def encrypt(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_Encrypt.html"""
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key_id = self.parameters.get("KeyId")
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encryption_context = self.parameters.get('EncryptionContext', {})
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plaintext = self.parameters.get("Plaintext")
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self._validate_key_id(key_id)
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if isinstance(plaintext, six.text_type):
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plaintext = plaintext.encode('utf-8')
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@ -249,6 +335,7 @@ class KmsResponse(BaseResponse):
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return json.dumps({"CiphertextBlob": ciphertext_blob_response, "KeyId": arn})
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def decrypt(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_Decrypt.html"""
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ciphertext_blob = self.parameters.get("CiphertextBlob")
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encryption_context = self.parameters.get('EncryptionContext', {})
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@ -262,11 +349,14 @@ class KmsResponse(BaseResponse):
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return json.dumps({"Plaintext": plaintext_response, 'KeyId': arn})
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def re_encrypt(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_ReEncrypt.html"""
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ciphertext_blob = self.parameters.get("CiphertextBlob")
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source_encryption_context = self.parameters.get("SourceEncryptionContext", {})
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destination_key_id = self.parameters.get("DestinationKeyId")
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destination_encryption_context = self.parameters.get("DestinationEncryptionContext", {})
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self._validate_cmk_id(destination_key_id)
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new_ciphertext_blob, decrypting_arn, encrypting_arn = self.kms_backend.re_encrypt(
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ciphertext_blob=ciphertext_blob,
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source_encryption_context=source_encryption_context,
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@ -281,52 +371,52 @@ class KmsResponse(BaseResponse):
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)
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def disable_key(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_DisableKey.html"""
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.disable_key(key_id)
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
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self._validate_cmk_id(key_id)
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self.kms_backend.disable_key(key_id)
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return json.dumps(None)
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def enable_key(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_EnableKey.html"""
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.enable_key(key_id)
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
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self._validate_cmk_id(key_id)
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self.kms_backend.enable_key(key_id)
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return json.dumps(None)
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def cancel_key_deletion(self):
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"""https://docs.aws.amazon.com/kms/latest/APIReference/API_CancelKeyDeletion.html"""
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.cancel_key_deletion(key_id)
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except KeyError:
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raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
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"{key_id}' does not exist".format(region=self.region, key_id=key_id))
|
||||
|
||||
self._validate_cmk_id(key_id)
|
||||
|
||||
self.kms_backend.cancel_key_deletion(key_id)
|
||||
|
||||
return json.dumps({'KeyId': key_id})
|
||||
|
||||
def schedule_key_deletion(self):
|
||||
"""https://docs.aws.amazon.com/kms/latest/APIReference/API_ScheduleKeyDeletion.html"""
|
||||
key_id = self.parameters.get('KeyId')
|
||||
if self.parameters.get('PendingWindowInDays') is None:
|
||||
pending_window_in_days = 30
|
||||
else:
|
||||
pending_window_in_days = self.parameters.get('PendingWindowInDays')
|
||||
_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
|
||||
try:
|
||||
return json.dumps({
|
||||
'KeyId': key_id,
|
||||
'DeletionDate': self.kms_backend.schedule_key_deletion(key_id, pending_window_in_days)
|
||||
})
|
||||
except KeyError:
|
||||
raise NotFoundException("Key 'arn:aws:kms:{region}:012345678912:key/"
|
||||
"{key_id}' does not exist".format(region=self.region, key_id=key_id))
|
||||
|
||||
self._validate_cmk_id(key_id)
|
||||
|
||||
return json.dumps({
|
||||
'KeyId': key_id,
|
||||
'DeletionDate': self.kms_backend.schedule_key_deletion(key_id, pending_window_in_days)
|
||||
})
|
||||
|
||||
def generate_data_key(self):
|
||||
"""https://docs.aws.amazon.com/kms/latest/APIReference/API_GenerateDataKey.html"""
|
||||
key_id = self.parameters.get('KeyId')
|
||||
encryption_context = self.parameters.get('EncryptionContext', {})
|
||||
number_of_bytes = self.parameters.get('NumberOfBytes')
|
||||
|
|
@ -334,15 +424,9 @@ class KmsResponse(BaseResponse):
|
|||
grant_tokens = self.parameters.get('GrantTokens')
|
||||
|
||||
# Param validation
|
||||
if key_id.startswith('alias'):
|
||||
if self.kms_backend.get_key_id_from_alias(key_id) is None:
|
||||
raise NotFoundException('Alias arn:aws:kms:{region}:012345678912:{alias_name} is not found.'.format(
|
||||
region=self.region, alias_name=key_id))
|
||||
else:
|
||||
if self.kms_backend.get_key_id(key_id) not in self.kms_backend.keys:
|
||||
raise NotFoundException('Invalid keyId')
|
||||
self._validate_key_id(key_id)
|
||||
|
||||
if number_of_bytes and (number_of_bytes > 1024 or number_of_bytes < 0):
|
||||
if number_of_bytes and (number_of_bytes > 1024 or number_of_bytes < 1):
|
||||
raise ValidationException((
|
||||
"1 validation error detected: Value '{number_of_bytes:d}' at 'numberOfBytes' failed "
|
||||
"to satisfy constraint: Member must have value less than or "
|
||||
|
|
@ -357,6 +441,7 @@ class KmsResponse(BaseResponse):
|
|||
).format(key_spec=key_spec))
|
||||
if not key_spec and not number_of_bytes:
|
||||
raise ValidationException("Please specify either number of bytes or key spec.")
|
||||
|
||||
if key_spec and number_of_bytes:
|
||||
raise ValidationException("Please specify either number of bytes or key spec.")
|
||||
|
||||
|
|
@ -378,14 +463,24 @@ class KmsResponse(BaseResponse):
|
|||
})
|
||||
|
||||
def generate_data_key_without_plaintext(self):
|
||||
"""https://docs.aws.amazon.com/kms/latest/APIReference/API_GenerateDataKeyWithoutPlaintext.html"""
|
||||
result = json.loads(self.generate_data_key())
|
||||
del result['Plaintext']
|
||||
|
||||
return json.dumps(result)
|
||||
|
||||
def generate_random(self):
|
||||
"""https://docs.aws.amazon.com/kms/latest/APIReference/API_GenerateRandom.html"""
|
||||
number_of_bytes = self.parameters.get("NumberOfBytes")
|
||||
|
||||
if number_of_bytes and (number_of_bytes > 1024 or number_of_bytes < 1):
|
||||
raise ValidationException((
|
||||
"1 validation error detected: Value '{number_of_bytes:d}' at 'numberOfBytes' failed "
|
||||
"to satisfy constraint: Member must have value less than or "
|
||||
"equal to 1024"
|
||||
).format(number_of_bytes=number_of_bytes)
|
||||
)
|
||||
|
||||
entropy = os.urandom(number_of_bytes)
|
||||
|
||||
response_entropy = base64.b64encode(entropy).decode("utf-8")
|
||||
|
|
@ -393,11 +488,6 @@ class KmsResponse(BaseResponse):
|
|||
return json.dumps({"Plaintext": response_entropy})
|
||||
|
||||
|
||||
def _assert_valid_key_id(key_id):
|
||||
if not re.match(r'^[A-F0-9]{8}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{12}$', key_id, re.IGNORECASE):
|
||||
raise NotFoundException('Invalid keyId')
|
||||
|
||||
|
||||
def _assert_default_policy(policy_name):
|
||||
if policy_name != 'default':
|
||||
raise NotFoundException("No such policy exists")
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue