podman/docs/source/markdown/options/decryption-key.md

####> This option file is used in: ####> podman build, create, farm build, pull, run ####> If file is edited, make sure the changes ####> are applicable to all of those.

--decryption-key=key[:passphrase]

The [key[:passphrase]] to be used for decryption of images. Key can point to keys and/or certificates. Decryption is tried with all keys. If the key is protected by a passphrase, it is required to be passed in the argument and omitted otherwise.