ABCKEY And TREZOR Protocol

Javascript

npm i @abckey/protocol

Usage

• protobuf.js

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) |

License

MIT