Amazon S3 dual-layer server-side encryption with AWS KMS (DSSE-KMS) Amazon S3 has recently added support for two independent layers of server-side encryption with AWS KMS (DSSE-KMS) for top-secret workloads. With this launch, Amazon S3 is the only cloud object storage service that supports multi layers of server-side encryption at object level. "DSSE-KMS is desi 20 Jun 2023 · 2 min read