+/**
+ * @brief Load a file into a keyarray
+ * @param array Pointer to the key array
+ * @param file The full path to the file to load
+ *
+ * Loads fingerprints from the supplied file into the provided keyarray. Does
+ * not re-initialise the array so can be called repeatedly to add multiple
+ * files. The file does not need to be sorted; array_add() is called for each
+ * key to ensure the array is suitable for binary searching with array_find()
+ */
+bool array_load(struct keyarray *array, const char *file);
+
+/**
+ * @brief Compare two OpenPGP fingerprints
+ * @param a Fingerprint 1
+ * @param b Fingerprint 2
+ *
+ * Compares 2 OpenPGP fingerprints, returning an integer less than, equal to,
+ * or greater than zero depending on whether a is less than, matches, or is
+ * greater than b.
+ *
+ * For the purposes of comparison shorter fingerprints sort earlier than
+ * longer fingerprints (i.e. v3 < v4 < v5) and comparison of same-length
+ * fingerprints treats them as a numberical value.
+ */
+int fingerprint_cmp(struct openpgp_fingerprint *a,
+ struct openpgp_fingerprint *b);
+