+/**
+ * sig_info - Get info on a given OpenPGP signature packet
+ * @packet: The signature packet
+ * @keyid: A pointer for where to return the signature keyid
+ * @creation: A pointer for where to return the signature creation time
+ *
+ * Gets any info about a signature packet; parses the subpackets for a v4
+ * key or pulls the data directly from v2/3. NULL can be passed for any
+ * values which aren't cared about.
+ */
+void sig_info(struct openpgp_packet *packet, uint64_t *keyid, time_t *creation);
+