diff --git a/lib/lib_gnupg.sh b/lib/lib_gnupg.sh
index ec68026..7d96200 100644
--- a/lib/lib_gnupg.sh
+++ b/lib/lib_gnupg.sh
@@ -118,6 +118,7 @@ EOF
     ### Export public key for verification inside ISO / chroot.
     install -d -m 0755 -o root -g root "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/etc/ciss/keys"
     install -d -m 0755 -o root -g root "${VAR_HANDLER_BUILD_DIR}/config/includes.binary"
+    gpg --batch --yes --export "${VAR_SIGNING_KEY_FPR}" >| "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/.ciss/attestation/${VAR_SIGNING_KEY_FPR}.gpg"
     gpg --batch --yes --export "${VAR_SIGNING_KEY_FPR}" >| "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/etc/ciss/keys/${VAR_SIGNING_KEY_FPR}.gpg"
     gpg --batch --yes --export "${VAR_SIGNING_KEY_FPR}" >| "${VAR_HANDLER_BUILD_DIR}/config/includes.binary/${VAR_SIGNING_KEY_FPR}.gpg"
     [[ -n "${VAR_SIGNING_CA}" ]] && gpg --batch --yes --export "${VAR_SIGNING_CA_FPR}" >| "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/etc/ciss/keys/${VAR_SIGNING_CA_FPR}.gpg"