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Amazon DynamoDB
Developer Guide (API Version 2012-08-10)

Before You Begin Using Encryption at Rest

Before you enable encryption at rest on an Amazon DynamoDB table, consider the following:

  • When encryption is enabled for a table, all the data stored in that table is encrypted. You can't encrypt only a subset of items in a table.

  • Amazon DynamoDB uses a single service default key for encrypting all of your tables. If this key doesn’t exist, it is created for you. Service default keys can't be disabled.

  • Encryption at rest only encrypts data while it is static (at rest) on a persistent storage media. If data security is a concern for data in transit or data in use, you need to take additional measures:

    • Data-in-transit: Protect your data while it is actively moving over a public or a private network by encrypting sensitive data on the client side or using encrypted connections (HTTPS, SSL, TLS, FTPS, and so on).

    • Data-in-use: Protect your data before sending it to DynamoDB using client-side encryption.

    Important

    Currently, you cannot enable Encryption at Rest for DynamoDB Streams. If Encryption at Rest is a compliance/regulatory requirement, we recommend turning off DynamoDB Streams for encrypted tables.

  • You can use on-demand backup and restore with encrypted tables, and you can create a backup of an encrypted table. The table that is restored with this backup has encryption enabled. For more information, see On-Demand Backup and Restore for DynamoDB.