OptionAWS_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.