message.md

Message

dto Message:
    data: bytes;
    signature: bytes;
    address: IAddress;
    version: int;
    signer: string;

The only manadatory parameter for the constructor it's data. The others can be undefined or have default empty values. If version is not provided the default value should be 1. The signer is not particularly used in signing or verifying the message, should be the name of the library that was used. (e.g. sdk-js, sdk-py, mxpy, etc.)

MessageComputer

class MessageComputer:
    compute_bytes_for_signing(message: Message): bytes;

    // returns the result of `compute_bytes_for_signing()`
    compute_bytes_for_verifying(messge: Message): bytes;

    pack_message(message: Message): {
        message: string; // hex encoded
        signature: string; // hex encoded
        address: string; // bech32 representation
        version: int;
        signer: string;
    };

    // packed_message should be the one obtained from calling `pack_message()`
    // should treat both 'legacy message' and current message
    unpack_message(packed_message: {
        message: string;
        signature: string;
        address: string;
        version: int;
        signer: string
    }): Message;

Reference implementation of compute_bytes_for_signing:

compute_bytes_for_signing(message: Message):
    PREFIX = bytes.fromhex("17456c726f6e64205369676e6564204d6573736167653a0a")
    size = length of message.data, encoded as a string
    content = concat(PREFIX, size, message.data)
    content_hash = keccak(digest_bits=256)
    
    return content_hash