1 files changed, 9 insertions, 3 deletions

diff --git a/src/fido/param.h b/src/fido/param.h
index 7d3c0cc..14ee74e 100644
--- a/src/fido/param.h
+++ b/src/fido/param.h
@@ -50,8 +50,14 @@
 /* HID Broadcast channel ID. */
 #define CTAP_CID_BROADCAST              0xffffffff
 
-/* Expected size of a HID report in bytes. */
-#define CTAP_RPT_SIZE                   64
+#define CTAP_INIT_HEADER_LEN            7
+#define CTAP_CONT_HEADER_LEN            5
+
+/* Maximum length of a CTAP HID report in bytes. */
+#define CTAP_MAX_REPORT_LEN             64
+
+/* Minimum length of a CTAP HID report in bytes. */
+#define CTAP_MIN_REPORT_LEN             (CTAP_INIT_HEADER_LEN + 1)
 
 /* Randomness device on UNIX-like platforms. */
 #ifndef FIDO_RANDOM_DEV
@@ -60,7 +66,7 @@
 
 /* Maximum message size in bytes. */
 #ifndef FIDO_MAXMSG
-#define FIDO_MAXMSG     1200
+#define FIDO_MAXMSG     2048
 #endif
 
 /* CTAP capability bits. */