Decryption does not allow an output directory

[fieala]

Is there a way to specify an output directory instead of a file name when decrypting? I do not know the file names in the encrypted file.

[soukoku]

That doesn't sound like it's going to work. If you don't know the file name then the lib won't know it either. Names are not part of the encrypted data.

[fieala]

It would be the equivalent of "gpg --decrypt my-file.gpg"
my-file.gpg is the only file specified. The file would be decrypted in the same directory and GPG knows the original file name; the same file name that was supplied with the "gpg --encrypt" command.

[rokx]

In most cases only gpg extension is the difference in the filename.
Encrypt: test.txt ->test.txt.gpg
Decrypt: test.txt.gpg -> test.txt

Like @soukoku said, there is no filename information in the encrypted data, Just the content is encrypted. You can basically name it to whatever you like.