npm:@abckey/protocol

Usage no npm install needed!

<script type="module">
  import abckeyProtocol from 'https://cdn.skypack.dev/@abckey/protocol';
</script>

README

ABCKEY And TREZOR Protocol

npm i @abckey/protocol

Messages are sent in packets of 64 bytes.

First packet has the following structure:

offset	length	type	contents
0	3	char[3]	'$##' magic constant
3	2	BE uint16_t	numerical types
5	4	BE uint32_t	message size
9	55	uint8_t[55]	first 55 bytes of message encoded in Protocol Buffers (padded with zeroes if shorter)

Following packets has the following structure:

offset	length	type	contents
0	1	char[1]	' magic constant
1	63	uint8_t[63]	following bytes of message encoded in Protocol Buffers (padded with zeroes if shorter)