On 29 Oct 2021, at 10:17, Chris Taylor <ch...@christaylordeveloper.co.uk> wrote: > I am developing a backup process for personal files, on USB thumb drive. I > tar and zip my files (30GB) then encrypt them with: > > gpg --no-symkey-cache --symmetric --cipher-algo AES256 my-backup.tar.gz > > I copy my-backup.tar.gz.gpg to my USB thumb drive. I am using Ubuntu so the > USB drive is formatted to Ext4. > > I try to decrypt with: > > gpg --output my-backup.tar.gz --decrypt my-backup.tar.gz.gpg > > and get the following error: > > gpg: AES256 encrypted data > gpg: encrypted with 1 passphrase > gpg: block_filter 0x0000556d112aa1e0: read error (size=13328,a->size=13328) > gpg: WARNING: encrypted message has been manipulated! > gpg: block_filter: pending bytes! > > I have gpg version 2.2.19, libgcrypt 1.8.5. Without encryption this process > has worked perfectly well many times.
I'd first check with something like openssl sha256 my-backup.tar.gz prior to copy / post copy if your thumb drive is good. Dw. _______________________________________________ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users