Module message

This file contains message serialization for messages intended to be signed.

Consumers of the signing API should not care about or implement individual ways to represent structs. Thus, the only publicly exposed api takes a struct, and the signing module takes care of the serialization under the hood. This requires converting the struct to a byte array using some serialization format. Further, the serialization format must be written to the signature object so that it can be used upon deserialization to use the correct deserializer.

To provide this interface, the SerializedMessage struct is introduced. SerializedMessage represents the serialized bytes along with the content format used for serialization. The latter is stored on the signed object, in e.g. a COSE header, so that upon deserialization the correct deserializer can be used.

Currently, only CBOR serialization / deserialization is implemented, since it is compact and is what COSE already uses.

Structs

SerializedMessage

A message (struct) to be signed, serialized to a byte array, along with the content format of the bytes.