LDN services: Difference between revisions

Line 1,212:

| 0x22 || 0x2 || Big-endian u16 size for the data starting at +0x48, must be <=0x500, and must match {total frame size relative to +0x0 above} + 0x48.

|-

| 0x24 || 0x4 || Big-endian u32 Counter, incremented ~~when~~ the below content ~~was~~ updated. Also used by the Station to determine whether the frame changed compared to a previous one. When comparing against a previous frame, new_counter-prev_counter must be <= 0xFF, and the counters must not match.

| 0x24 || 0x4 || Big-endian u32 Counter. The initial value is randomly-generated. This is incremented each time the below content is updated (including initial creation). Also used by the Station to determine whether the frame changed compared to a previous one. When comparing against a previous frame, new_counter-prev_counter must be <= 0xFF, and the counters must not match.

|-

| 0x28 || 0x20 || SHA256 hash over the entire frame starting at +0x0, with the above size + 0x48. During hashing, this hash is cleared, with the new hash overwriting the original in memory (the original is copied to stack for comparing).

@@ Line 1,212: / Line 1,212: @@
 | 0x22 || 0x2 || Big-endian u16 size for the data starting at +0x48, must be <=0x500, and must match {total frame size relative to +0x0 above} + 0x48.
 |-
-| 0x24 || 0x4 || Big-endian u32 Counter, incremented when the below content was updated. Also used by the Station to determine whether the frame changed compared to a previous one. When comparing against a previous frame, new_counter-prev_counter must be <= 0xFF, and the counters must not match.
+| 0x24 || 0x4 || Big-endian u32 Counter. The initial value is randomly-generated. This is incremented each time the below content is updated (including initial creation). Also used by the Station to determine whether the frame changed compared to a previous one. When comparing against a previous frame, new_counter-prev_counter must be <= 0xFF, and the counters must not match.
 |-
 | 0x28 || 0x20 || SHA256 hash over the entire frame starting at +0x0, with the above size + 0x48. During hashing, this hash is cleared, with the new hash overwriting the original in memory (the original is copied to stack for comparing).