+# clone releng repository
+echo "Cloning releng repository..."
+[ -d releng ] && rm -rf releng
+git clone https://gerrit.opnfv.org/gerrit/releng $WORKSPACE/releng/ &> /dev/null
+#this is where we import the siging key
+if [ -f $WORKSPACE/releng/utils/gpg_import_key.sh ]; then
+ source $WORKSPACE/releng/utils/gpg_import_key.sh
+fi
+
+signrpm () {
+for artifact in $RPM_LIST $SRPM_LIST; do
+ echo "Signing artifact: ${artifact}"
+ gpg2 -vvv --batch --yes --no-tty \
+ --default-key opnfv-helpdesk@rt.linuxfoundation.org \
+ --passphrase besteffort \
+ --detach-sig $artifact
+ gsutil cp "$artifact".sig gs://$GS_URL/$(basename "$artifact".sig)
+ echo "Upload complete for ${artifact} signature"
+done
+}
+
+signiso () {
+time gpg2 -vvv --batch --yes --no-tty \
+ --default-key opnfv-helpdesk@rt.linuxfoundation.org \
+ --passphrase besteffort \
+ --detach-sig $BUILD_DIRECTORY/release/OPNFV-CentOS-7-x86_64-$OPNFV_ARTIFACT_VERSION.iso
+
+gsutil cp $BUILD_DIRECTORY/release/OPNFV-CentOS-7-x86_64-$OPNFV_ARTIFACT_VERSION.iso.sig gs://$GS_URL/opnfv-$OPNFV_ARTIFACT_VERSION.iso.sig
+echo "ISO signature Upload Complete!"
+}
+
+uploadiso () {