Looks like the secret key isn’t on the other machine, so even with the right passphrase (read from a file) it wouldn’t work.
These options should work, to
- Either copy the keyrings (maybe only secret keyring required, but public ring is public anyway) over to the other machine
- Or export the secret key & then import it on the other machine
A few useful looking options from man gpg:
--export
Either export all keys from all keyrings (default keyrings and those registered via option--keyring), or if at least one name is given, those of the given name. The new keyring is written to STDOUT or to the file given with option--output. Use together with--armorto mail those keys.
--export-secret-keys
Same as--export, but exports the secret keys instead.
--import--fast-import
Import/merge keys. This adds the given keys to the keyring. The fast version is currently just a synonym.
And maybe
--keyring file
Add file to the current list of keyrings. If file begins with a tilde and a slash, these are replaced by the $HOME directory. If the file‐ name does not contain a slash, it is assumed to be in the GnuPG home directory (“~/.gnupg” if –homedir or $GNUPGHOME is not used).Note that this adds a keyring to the current list. If the intent is to use the specified keyring alone, use
--keyringalong with--no-default-keyring.
--secret-keyring file
Same as--keyringbut for the secret keyrings.