amaespipe will search for the aespipe program in the following directories: /usr/bin:/usr/local/bin:/sbin:/usr/sbin.
amaespipe is called by amcrypt for Amanda data encryption.
amaespipe is based on aespipe's bzaespipe program. It calls aespipe to encrypt data using AES256 as the encryption and SHA256 as the hash function. GPG key should be stored in $AMANDA_HOME/.gnupg/am_key.gpg. amaespipe reads passphrase from file descriptor 3. During decryption, amaespipe autodects encryption type and hash function from the encrypted image.