encryption - 无服务器，在 aws 上加密主题

Question

我正在 AWS 上使用无服务器创建主题。这一切正常，但是我想使用 SSE 加密主题。我如何完成这项工作。 yaml文件的格式应该是什么。到目前为止我有

MyTopic:
  Type: AWS::SNS::Topic
  Properties:
    TopicName: MyTopic
MyTopicPolicy:
  Type: AWS::SNS::TopicPolicy
  Properties:
    Topics:
      - Ref: MyTopic
    PolicyDocument:
      Id: MyTopicPolicy
      Version: '2012-10-17'
      Statement:
        - Sid: AllowSubscribe
          Effect: Allow
          Principal:
            AWS: <ID>
          Action:
            - SNS:Subscribe            
          Resource: !Ref MyTopic

Answer 1

如上述答案所示，您需要在 SNS 主题定义中引用 KMS key 。您可以为 SNS 使用默认的 KMS key (别名 aws/sns)，也可以创建自己的

您可以查看下面的 CloudFormation，了解如何在同一模板中创建加密主题和 KMS key - 使用您自己的 KMS key 。 key 策略设置为允许整个 AWS 账户进行管理和使用，但您可能希望使用最小权限原则来锁定它，具体取决于您所在环境的安全要求。

---
AWSTemplateFormatVersion: '2010-09-09'
Description: Demo template for Encrypted SNS Topic

Resources:
  SNSKMSKey:
    Type: 'AWS::KMS::Key'
    Properties:
      Description: Demo KMS Key Policy
      Enabled: true
      EnableKeyRotation: true
      KeyPolicy:
        Version: 2012-10-17
        Id: KmsKeyPolicy
        Statement:
          - Sid: SimpleKeyPolicyAllowAccountAdmin
            Effect: Allow
            Principal:
              AWS: !Sub "arn:aws:iam::${AWS::AccountId}:root"
            Action:
              - 'kms:*'
            Resource: '*'
          - Sid: SimpleKeyPolicyAllowAccountUsage
            Effect: Allow
            Principal:
              AWS: !Sub "arn:aws:iam::${AWS::AccountId}:root"
            Action:
              - 'kms:Decrypt'
              - 'kms:Encrypt'
              - 'kms:GenerateDataKey*'
              - 'kms:DescribeKey'
            Resource: '*'


  SNSKmeKeyAlias:
    Type: "AWS::KMS::Alias"
    Properties:
      AliasName: !Sub "alias/${AWS::StackName}-SNSEncryptionKey"
      TargetKeyId: !Ref SNSKMSKey

  # -- Encrypted  SNS Topic -- #
  EncryptedSNSTopic:
    Type: AWS::SNS::Topic
    Properties:
      TopicName: !Sub "${AWS::StackName}-EncryptedSNSTopic"
      KmsMasterKeyId: !Ref SNSKMSKey


Outputs:
  KmsKeyId:
    Value: !Ref SNSKMSKey
  TopicArn:
    Value: !Ref EncryptedSNSTopic