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* docs changes for PAYLOAD_TYPE_GRP_DATA

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Scott Powell 2026-03-29 06:33:35 +11:00
parent 517f2f1efd
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docs/payloads.md
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@ -226,7 +226,7 @@ txt_type
| reply path | (variable) | reply path |
# Group text message / datagram
# Group text message
| Field | Size (bytes) | Description |
|--------------|-----------------|--------------------------------------------|
@ -236,6 +236,22 @@ txt_type
The plaintext contained in the ciphertext matches the format described in [plain text message](#plain-text-message). Specifically, it consists of a four byte timestamp, a flags byte, and the message. The flags byte will generally be `0x00` because it is a "plain text message". The message will be of the form `<sender name>: <message body>` (eg., `user123: I'm on my way`).
# Group datagram
| Field | Size (bytes) | Description |
|--------------|-----------------|--------------------------------------------|
| channel hash | 1 | first byte of SHA256 of channel's shared key |
| cipher MAC | 2 | MAC for encrypted data in next field |
| ciphertext | rest of payload | encrypted data, see below for details |
The data contained in the ciphertext uses the format below:
| Field | Size (bytes) | Description |
|--------------|-----------------|--------------------------------------------|
| data type | 2 | Identifier for type of data. (See number_allocations.md) |
| data len | 1 | byte length of data |
| data | rest of payload | (depends on data type) |
# Control data