#define KSERR_REGEN -1 /* Regenerate keys */
#define KSERR_NOKEYS -2 /* No keys left */
#define KSERR_DECRYPT -3 /* Unable to decrypt message */
+#define KSERR_SEQ -4 /* Incorrect sequence number */
+#define KSERR_MALFORMED -5 /* Input ciphertext is broken */
/* --- Key exchange --- *
*