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Key Management Service:Alibaba Cloud services that can be integrated with KMS

Last Updated:Feb 23, 2024

This topic describes the Alibaba Cloud services that can be integrated with Key Management Service (KMS).

Important

If you purchased an Alibaba Cloud service that can be integrated with KMS and your business requirements can be met by using default keys, you do not need to purchase a KMS instance. A default key can be of the following types: service key and customer master key (CMK).

Workload data encryption

Service

Description

References

Elastic Compute Service (ECS)

By default, the disk encryption feature of ECS uses service keys to encrypt data. This feature can also use user-managed keys to encrypt data. To encrypt data stored on each disk, you must use a CMK and a data key that are specific to the disk and use the envelope encryption mechanism.

The disk encryption feature encrypts the data that is transmitted from an ECS instance to a disk and decrypts the data that is read from the disk. Data is encrypted or decrypted on the host on which the ECS instance resides. During encryption and decryption, the performance of the disk is not affected.

After an encrypted disk is created and attached to an ECS instance, the system encrypts the following data:

  • Static data that is stored on the disk.

  • Data that is transmitted between the disk and the ECS instance. Data in the operating system of the ECS instance is not encrypted.

  • All snapshots that are created from the encrypted disk. These snapshots are referred to as encrypted snapshots.

Encryption overview

Container Service for Kubernetes (ACK)

ACK supports server-side encryption (SSE) based on KMS for the following types of workload data:

  • Kubernetes Secrets

    In a Kubernetes cluster, Kubernetes Secrets are used to store and manage sensitive business data. For more information about Kubernetes Secrets, see Secrets. The sensitive business data includes application passwords, Transport Layer Security (TLS) certificates, and credentials that are used to download Docker images. Kubernetes stores Secrets in the etcd of the cluster.

  • Volumes

    A volume can be a disk, an Object Storage Service (OSS) bucket, or an Apsara File Storage NAS file system. You can use KMS-based SSE encryption to encrypt each type of volume. For example, you can create an encrypted disk and attach the disk to a Kubernetes cluster as a volume.

Use KMS to encrypt Kubernetes Secrets

Web App Service

Web App Service can be integrated with KMS to encrypt sensitive configuration data, such as access credentials of ApsaraDB RDS.

None

Application Configuration Management

Application Configuration Management can be integrated with KMS to encrypt application configurations. This ensures the security of sensitive configurations, such as data sources, tokens, usernames, and passwords, and reduces the risk of configuration leaks. Application Configuration Management can use KMS in one of the following ways:

  • Encrypt data in KMS

    Application Configuration Management calls a data encryption API operation to transmit configurations to KMS. Then, KMS encrypts the configurations by using a CMK.

  • Use the envelope encryption mechanism to encrypt data in Application Configuration Management

    Application Configuration Management uses a data key to encrypt configurations and uses a CMK to encrypt the data key by calling API operations of KMS.

Create and use encrypted configuration

Persistent storage encryption

Service

Description

References

Object Storage Service (OSS)

OSS uses the SSE feature to encrypt uploaded data.

  • When you upload data to OSS, OSS encrypts the uploaded data and then stores the encrypted data in persistent storage.

  • When you download data from OSS, OSS automatically decrypts the data and then returns the decrypted data to you. In addition, OSS declares that the data has been encrypted on OSS in an HTTP response header.

OSS can use an encryption system that is dedicated to OSS to implement the SSE feature. This encryption method is referred to as SSE-OSS. The keys used in this encryption system are not managed by OSS. Therefore, you cannot use ActionTrail to audit the use of these keys.

OSS can also use KMS to implement the SSE feature. This encryption method is referred to as SSE-KMS. This method allows OSS to use service keys or user-managed keys to encrypt data. You can configure a default CMK for each bucket or specify a CMK when you upload an object.

Apsara File Storage NAS (NAS)

By default, NAS uses a service key to encrypt data. To encrypt data stored on each volume, you must use a CMK and a data key that are specific to the volume and use the envelope encryption mechanism.

Server-side encryption

Tablestore

By default, Tablestore uses service keys to encrypt your data. Tablestore can also use user-managed keys to encrypt your data. To encrypt data stored on each table, you must use a CMK and a data key that are specific to the table and use the envelope encryption mechanism.

None

Cloud Storage Gateway (CSG)

CSG supports the following encryption methods:

  • Gateway encryption: Files in the gateway cache are encrypted before the files are uploaded to OSS.

  • OSS-based encryption

Database encryption

Service

Description

References

ApsaraDB RDS

ApsaraDB RDS supports the following encryption methods:

  • Disk encryption

    ApsaraDB RDS provides the disk encryption feature free of charge for RDS instances that use cloud disks. After you enable this feature for your RDS instance, this feature encrypts the entire data disks of your instance based on block storage. The keys that are used for disk encryption are encrypted and stored in KMS. ApsaraDB RDS reads the keys only when you start or migrate your RDS instance.

  • Transparent data encryption (TDE)

    ApsaraDB RDS for MySQL and ApsaraDB RDS for SQL Server support TDE. The keys that are used for TDE are encrypted and stored in KMS. ApsaraDB RDS reads the keys only when you start or migrate your RDS instance. After you enable TDE for your RDS instance, you can specify the database or table for encryption. The TDE feature encrypts the data of the specified database or table before the data is written to a destination device such as a disk, solid-state drive (SSD), or Peripheral Component Interconnect Express (PCIe) card, or to a service such as OSS. All data files and backups of the RDS instance are stored in ciphertext.

ApsaraDB for MongoDB

The TDE feature is provided. This feature works in the same manner across database services.

Configure TDE for an ApsaraDB for MongoDB instance

PolarDB

ApsaraDB for OceanBase

TDE

ApsaraDB for Redis

Enable TDE

Log data encryption

Service

Description

References

ActionTrail

When you create a single-account or multi-account trail, you can enable encryption for events that are delivered to OSS in the ActionTrail console.

Log Service

Log Service can be integrated with KMS to encrypt data for secure storage. Static data protection is provided.

Encrypt data

Big data and AI

Service

Description

References

MaxCompute

MaxCompute can use service keys or user-managed keys to encrypt your data.

Data encryption

Machine Learning Platform for AI (PAI)

You can configure SSE for the cloud services that are used in the architecture of PAI and different data flow stages, such as computing engines, ACK, and data storage services. This protects data security and privacy.

None

Other scenarios

Service

Description

References

Alibaba Cloud CDN (CDN)

When an OSS bucket is used as the origin server, you can use OSS-based SSE to protect distributed content.

Grant Alibaba Cloud CDN access permissions on private OSS buckets

ApsaraVideo Media Processing (MPS)

MPS supports two encryption methods: Alibaba Cloud proprietary cryptography and HTTP Live Streaming (HLS) encryption. You can integrate MPS with KMS to protect video content regardless of the encryption method used.

None

ApsaraVideo VOD (VOD)

VOD supports two encryption methods: Alibaba Cloud proprietary cryptography and HLS encryption. You can integrate VOD with KMS to protect video content regardless of the encryption method used.