I'm trying to use Auto Scaling groups in AWS to create and manage instances created from AMIs with encrypted snapshots, which have been encrypted by a CMK owned by a different AWS account. Managed disk created from custom image or snapshot which is encrypted using SSE & CMK must use same CMK to encrypt. What should you do at first to protect your data? If the CMK feature is enabled for a disk, it can’t be disabled. Here we go! It also prevents you from sharing AMIs Snapshots that you intend to share must instead be encrypted with a customer managed CMK. Whether you enable encryption by default or in individual creation operations, you can override the default key for EBS encryption and select a symmetric customer managed CMK. This allows the other account to be able to take those snapshots and restore an instance. Like EBS volumes, snapshots in AMIs can be encrypted by either your default AWS Key Management Service customer master key (CMK), or to a customer managed key that you specify. 2021/02/04 - Amazon Elastic Compute Cloud - 14 updated api methods . Only supported Software and HSM RSA keys with 2048 bit, 3072 bit, and 4096-bit sizes. We recommend to use Key Policies to control access to customer master keys. 4. 3. For example, its possible to setup a RDS Database encrypted with CMK, then share a snapshot and the CMK with another account. Even if you have not enabled encryption by default, you can enable encryption when you create an individual volume or snapshot. To perform a backup to S3 Repository, a snapshot replication or a restore using Customer Master Keys (CMKs), you need to allow IAM Roles to use Encryption Keys involved in the task. About; ... you need to remove this condition from the default key policy for a customer managed CMK. You can change the encryption keys according to your requirements. You must in all cases have permission to use the selected key. 1. CMKs can be shared with other accounts. Specify IMAGE_MANAGEMENT to create a lifecycle policy that manages the lifecycle of EBS-backed AMIs. Specify EBS_SNAPSHOT_MANAGEMENT to create a lifecycle policy that manages the lifecycle of Amazon EBS snapshots. If you need you can copy data to a new disk without CMK. I keep . Snapshots that you intend to share must instead be encrypted with a customer managed CMK." That is, AWS says, Data classification, which is private/critical or not. As far as i know you can't make your encrypted snapshots available publicly but you can share an encrypted snapshot, you must share the customer managed CMK used to encrypt the snapshot You can highlight the text above to change formatting and highlight code. 2. […] AWS prevents you from sharing snapshots that were encrypted with your default CMK. 1. Changes AWS Outposts now supports EBS local snapshots on Outposts that allows customers to store snapshots of AWS prevents you from sharing snapshots that were encrypted with your default CMK. "When you share an encrypted snapshot, you must also share the customer managed CMK used to encrypt the snapshot. Today’s topic is about encryption data with AWS. The features of the private data: # Encrypted # Not be directly accessible from the internet # Be required authorization and authentication Stack Overflow. Once enabled for a Recovery Services vault, encryption using customer-managed keys can't be reverted back to using platform-managed keys (default). Share must instead be encrypted with your default CMK. snapshot which is encrypted using SSE & CMK must same... From custom image or snapshot which is encrypted using SSE & CMK use. Custom image or snapshot prevents you from sharing snapshots that were encrypted with default! 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