A company needs an AWS Transfer Family SFTP server that delivers PGP-encrypted files from a third-party supplier into an Amazon S3 bucket. The files must be automatically decrypted after being received. The solutions architect created an IAM role with a policy granting access to AWS Secrets Manager and the S3 bucket. The role’s trust policy allows the transfer.amazonaws.com service to assume the role. To complete an automated decryption workflow using a Transfer Family managed workflow, what should the solutions architect do next?

The correct answer stores the PGP private key in Secrets Manager because decryption requires the private key, not the public key. A nominal step in the Transfer Family managed workflow is used for standard processing, such as decryption, and it should be configured with PGP decryption parameters. Associating the workflow with the Transfer Family server ensures all files transferred to that server trigger the decryption process. Incorrect options are wrong for several reasons: Storing the PGP public key in Secrets Manager is incorrect because decryption requires the private key. Using an exception-handling step is incorrect; decryption is a standard, expected operation, not an exception. Associating the workflow with the SFTP user is less efficient than associating it with the server, as the server-level association applies to all transfers.