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## `AWS_KMS_KEY_ARN`

Option | `AWS_KMS_KEY_ARN`
Description | Amazon Resource Name (ARN) of the Key Management Service (KMS) key for Amazon Web Services (AWS). This parameter enables secure encryption/decryption operations and can be used as an alternative authentication method to `AWS_ACCESS_KEY_ID` when integrated with IAM roles.

KMS keys provide centralized encryption key management with fine-grained access control and audit capabilities.

KMS key ARNs follow the format `arn:aws:kms:region:account-id:key/key-id`. Some examples of keys are: `arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012` and `arn:aws:kms:eu-west-1:123456789012:key/alias/my-encryption-key`.

For more information about AWS configuration for bucket storage and archiving, see Amazon Bucket Storage and S3 Archiving.

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