Returns the default encryption configuration for an Amazon S3 bucket. If the bucket does not have a default encryption configuration, GetBucketEncryption returns ServerSideEncryptionConfigurationNotFoundError .

For information about the Amazon S3 default encryption feature, see Amazon S3 Default Bucket Encryption.

To use this operation, you must have permission to perform the s3:GetEncryptionConfiguration action. The bucket owner has this permission by default. The bucket owner can grant this permission to others. For more information about permissions, see Permissions Related to Bucket Subresource Operations and Managing Access Permissions to Your Amazon S3 Resources.

The following operations are related to GetBucketEncryption :

See also: AWS API Documentation

Request Syntax

response = client.get_bucket_encryption(
  • Bucket (string) --


    The name of the bucket from which the server-side encryption configuration is retrieved.

  • ExpectedBucketOwner (string) -- The account ID of the expected bucket owner. If the bucket is owned by a different account, the request fails with the HTTP status code 403 Forbidden (access denied).
Return type



Response Syntax

    'ServerSideEncryptionConfiguration': {
        'Rules': [
                'ApplyServerSideEncryptionByDefault': {
                    'SSEAlgorithm': 'AES256'|'aws:kms',
                    'KMSMasterKeyID': 'string'
                'BucketKeyEnabled': True|False

Response Structure

  • (dict) --

    • ServerSideEncryptionConfiguration (dict) --

      Specifies the default server-side-encryption configuration.

      • Rules (list) --

        Container for information about a particular server-side encryption configuration rule.

        • (dict) --

          Specifies the default server-side encryption configuration.

          • ApplyServerSideEncryptionByDefault (dict) --

            Specifies the default server-side encryption to apply to new objects in the bucket. If a PUT Object request doesn't specify any server-side encryption, this default encryption will be applied.

            • SSEAlgorithm (string) --

              Server-side encryption algorithm to use for the default encryption.

            • KMSMasterKeyID (string) --

              Amazon Web Services Key Management Service (KMS) customer Amazon Web Services KMS key ID to use for the default encryption. This parameter is allowed if and only if SSEAlgorithm is set to aws:kms .

              You can specify the key ID or the Amazon Resource Name (ARN) of the KMS key. However, if you are using encryption with cross-account or Amazon Web Services service operations you must use a fully qualified KMS key ARN. For more information, see Using encryption for cross-account operations.

              For example:

              • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
              • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab


              Amazon S3 only supports symmetric KMS keys and not asymmetric KMS keys. For more information, see Using symmetric and asymmetric keys in the Amazon Web Services Key Management Service Developer Guide .

          • BucketKeyEnabled (boolean) --

            Specifies whether Amazon S3 should use an S3 Bucket Key with server-side encryption using KMS (SSE-KMS) for new objects in the bucket. Existing objects are not affected. Setting the BucketKeyEnabled element to true causes Amazon S3 to use an S3 Bucket Key. By default, S3 Bucket Key is not enabled.

            For more information, see Amazon S3 Bucket Keys in the Amazon S3 User Guide .