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source/operations/server-side-encryption.rst
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source/operations/server-side-encryption.rst
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=====================
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Data Encryption (SSE)
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=====================
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.. default-domain:: minio
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.. contents:: Table of Contents
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:local:
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:depth: 2
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.. |EK| replace:: :abbr:`EK (External Key)`
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.. |SSE| replace:: :abbr:`SSE (Server-Side Encryption)`
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.. |KMS| replace:: :abbr:`KMS (Key Management System)`
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MinIO Server-Side Encryption (SSE) protects objects as part of write operations,
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allowing clients to take advantage of server processing power to secure objects
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at the storage layer (encryption-at-rest). SSE also provides key functionality
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to regulatory and compliance requirements around secure locking and erasure.
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MinIO SSE uses the :minio-git:`MinIO Key Encryption Service (KES) <kes>` and an
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external Key Management Service (KMS) for performing secured cryptographic
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operations at scale. MinIO also supports client-managed key management, where
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the application takes full responsibility for creating and managing encryption
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keys for use with MinIO SSE.
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MinIO supports the following |KMS| as the central key store:
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- :ref:`Hashicorp KeyVault <minio-sse-vault>`
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- :ref:`AWS SecretsManager <minio-sse-aws>`
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- :ref:`Google Cloud SecretManager <minio-sse-gcp>`
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- :ref:`Azure Key Vault <minio-sse-azure>`
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MinIO SSE requires enabling :ref:`minio-tls`.
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Supported Encryption Types
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--------------------------
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MinIO SSE is feature and API compatible with
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:s3-docs:`AWS Server-Side Encryption <server-side-encryption.html>` and
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supports the following encryption strategies:
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.. tab-set::
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.. tab-item:: SSE-KMS *Recommended*
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:sync: sse-kms
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MinIO supports enabling automatic SSE-KMS encryption of all objects
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written to a bucket using a specific External Key (EK) stored on the
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external |KMS|. Clients can override the bucket-default |EK| by specifying
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an explicit key as part of the write operation.
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For buckets without automatic SSE-KMS encryption, clients can specify
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an |EK| as part of the write operation instead.
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SSE-KMS provides more granular and customizable encryption compared to
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SSE-S3 and SSE-C and is recommended over the other supported encryption
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methods.
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For a tutorial on enabling SSE-KMS in a local (non-production) MinIO
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Deployment, see :ref:`minio-encryption-sse-kms-quickstart`.
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.. tab-item:: SSE-S3
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:sync: sse-s3
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MinIO supports enabling automatic SSE-S3 encryption of all objects
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written to a bucket using an |EK| stored on the external |KMS|. MinIO
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SSE-S3 supports *one* |EK| for the entire deployment.
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For buckets without automatic SSE-S3 encryption, clients can request
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SSE encryption as part of the write operation instead.
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For a tutorial on enabling SSE-s3 in a local (non-production) MinIO
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Deployment, see :ref:`minio-encryption-sse-s3-quickstart`.
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.. tab-item:: SSE-C
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:sync: sse-c
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Clients specify an |EK| as part of the write operation for an object.
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MinIO uses the specified |EK| to perform SSE-S3.
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SSE-C does not support bucket-default encryption settings and requires
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clients perform all key management operations.
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.. toctree::
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:titlesonly:
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:hidden:
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/operations/server-side-encryption/configure-minio-kes-hashicorp
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/operations/server-side-encryption/configure-minio-kes-aws
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/operations/server-side-encryption/configure-minio-kes-gcp
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/operations/server-side-encryption/configure-minio-kes-azure
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