Official downloads and verification files (SHA256 & GPG signatures).
1) Verify SHA256
sha256sum -c synex-kde-13.0-amd64.hybrid.iso.sha256 sha256sum -c synex-lxde-13.0-amd64.hybrid.iso.sha256 sha256sum -c synex-xfce-13.0-amd64.hybrid.iso.sha256
2) Verify GPG signature
# import public key (if you don't have it) curl -fsSL http://repo.synex.ar/synex.gpg.key | gpg --dearmor | sudo tee /usr/share/keyrings/synex.gpg >/dev/null # verify ISO signature gpg --verify synex-kde-13.0-amd64.hybrid.iso.asc synex-kde-13.0-amd64.hybrid.iso gpg --verify synex-lxde-13.0-amd64.hybrid.iso.asc synex-lxde-13.0-amd64.hybrid.iso gpg --verify synex-xfce-13.0-amd64.hybrid.iso.asc synex-xfce-13.0-amd64.hybrid.iso