Returns the AggregationId for grouping if this is an aggregatable submission. The aggregation ID computationally authenticates the relevant contents of the submission request, namely,

• Envelope contents com.digitalasset.canton.sequencing.protocol.ClosedEnvelope.bytes, the recipients com.digitalasset.canton.sequencing.protocol.ClosedEnvelope.recipients of the batch, and whether there are signatures.
• The maxSequencingTime
• The timestampOfSigningKey
• The aggregationRule

The AggregationId does not authenticate the following pieces of a submission request:

• The signatures com.digitalasset.canton.sequencing.protocol.ClosedEnvelope.signatures on the closed envelopes because the signatures differ for each sender. Aggregating the signatures is the whole point of an aggregatable submission. In contrast, the presence of signatures is relevant for the ID because it determines how the com.digitalasset.canton.sequencing.protocol.ClosedEnvelope.bytes are interpreted.
• The sender and the messageId, as they are specific to the sender of a particular submission request
• The isRequest flag because it is irrelevant for delivery or aggregation

Casts this instance's representative protocol version to one for the target type. This only succeeds if the versioning schemes are the same.

Returns the com.google.protobuf.ByteString from which this object has been deserialized, if any. If defined, getCryptographicEvidence will use this as the serialization.

Returns the serialization of the object into a com.google.protobuf.ByteString. In particular, every instance i of this trait must equal fromByteString(i.toByteString).

This method must yield the same result if it is invoked several times.

Yields the Proto version that this class will be serialized to

We have a correspondence {Proto version} <-> {[protocol version]}: each proto version correspond to a list of consecutive protocol versions. The representative is one instance of this list, usually the smallest value. In other words, the Proto versions induce an equivalence relation on the list of protocol version, thus use of representative.

The method protocolVersionRepresentativeFor below allows to query the representative for an equivalence class.

Yields a byte array representation of the corresponding UntypedVersionedMessage wrapper of this instance.

Yields a byte string representation of the corresponding UntypedVersionedMessage wrapper of this instance.

Computes the serialization of the object as a com.google.protobuf.ByteString.

Must meet the contract of getCryptographicEvidence except that when called several times, different com.google.protobuf.ByteStrings may be returned.

Yields the proto representation of the class inside an UntypedVersionedMessage wrapper.

Subclasses should make this method public by default, as this supports composing proto serializations. Keep it protected, if there are good reasons for it (e.g. com.digitalasset.canton.serialization.ProtocolVersionedMemoizedEvidence).

Be aware that if calling on a class that defines a LegacyProtoConverter, this method will still return a VersionedMessage. If the current protocol version maps to the legacy converter, deserialization will then fail (as it will try to deserialize to the raw protobuf instead of the VersionedMessage wrapper this was serialized to. Prefer using toByteString which handles this use case correctly.