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-rwxr-xr-xscripts/gen-pgp-keyblock.sh38
1 files changed, 38 insertions, 0 deletions
diff --git a/scripts/gen-pgp-keyblock.sh b/scripts/gen-pgp-keyblock.sh
new file mode 100755
index 0000000..2985531
--- /dev/null
+++ b/scripts/gen-pgp-keyblock.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+# Script to create/update Knot Resolver PGP keyring
+set -o errexit -o nounset
+
+keys=(
+ 'B6006460B60A80E782062449E747DF1F9575A3AA' # vladimir.cunat@nic.cz
+ '3057EE9A448F362D74205A779AB120DA0A76F6DE' # ales.mrazek@nic.cz
+ # '4A8BA48C2AED933BD495C509A1FBA5F7EF8C4869' # tomas.krizek@nic.cz expired 2022-03-31
+)
+outfile="kresd-keyblock.asc"
+url="https://secure.nic.cz/files/knot-resolver/kresd-keyblock.asc"
+
+keyring="$(mktemp -d)"
+keyring_import="$(mktemp -d)"
+published="$(mktemp)"
+
+cleanup() {
+ rm -rf "${keyring}"
+ rm -rf "${keyring_import}"
+ rm -rf "${published}"
+}
+trap cleanup EXIT
+
+# obtain keys from keys.openpgp.org
+gpg --homedir "${keyring}" -q --keyserver keys.openpgp.org --recv-keys "${keys[@]}"
+
+# export minimal size keys with just the necessary signatures
+rm -f "${outfile}"
+gpg --homedir "${keyring}" -q --export --export-options export-minimal --armor --output "${outfile}" "${keys[@]}"
+
+# display keys after import
+gpg --homedir "${keyring_import}" -q --import "${outfile}"
+gpg --homedir "${keyring_import}" -k
+echo "Created: ${outfile}"
+
+# check if update of secure.nic.cz keyblock might be needed
+curl -sfo "${published}" "${url}"
+diff -q "${outfile}" "${published}" &>/dev/null || echo "Generated keyblock differs from ${url}"