package hw.trezor.messages.extapp

Get desktop application:
View/edit binary Protocol Buffers messages

* Request: Data chunk sent to the device @next ExtAppDataChunkRequest @next ExtAppLoaded

• required bytes data = 1

  / Bytes from the application image

• required bytes hash = 2

  / Hash used for the chunk verification

* Response: Device asks for more data from application image. @end @next ExtAppDataChunkAck

• required uint32 index = 1

  / Index of the requested chunk

* Response: Application header and merkle proof @next ExtAppDataChunkRequest @next ExtAppRootPacketRequest

• required bytes header = 1

  / Application header

• required bytes proof = 2

  / Merkle proof

• required sint64 root_packet_timestamp = 3

  / Root packet timestamp

* Request: Ask for application header and merkle proof @next ExtAppHeaderAck

(message has no fields)

* Request: Load an external application onto the device. If the app is present in the app cache, it will be loaded into memory. Otherwise, an app header loading flow will be initiated to download the app into Trezor. @start @next ExtAppLoaded @next ExtAppHeaderRequest

• required string id = 1

  / Application id

• required common.Version version = 2

  / Minimal required version

• optional bytes fingerprint = 3

  / Fingerprint of the app to load (optional)

* Response: External application loaded @end

• required uint32 instance_id = 1

  / Instance ID of the loaded app, referred to in ExtAppRun

• required common.Version version = 2

  / Version of the loaded application.

* Request: Run a workflow in an external application. @start @next ExtAppResponse

• required uint32 instance_id = 1

  / Instance ID of a loaded external application, result of ExtAppLoad.

• required uint32 message_id = 2

  / Message ID to pass to the external app.

• required bytes data = 3

  / Data to pass to the external app.

* Response: Response of a workflow in the external application. @next ExtAppMessage

• required uint32 message_id = 1

  / Message ID of the response.

• required bytes data = 2

  / Data returned by the external application.

• optional bool finished = 3

  / Indicator whether the workflow is finished.

* Response: Root packet @next ExtAppDataChunkRequest

• required bytes root_packet = 1

  / Root packet content

* Request: Ask for the appropriate root packet The device asks for a root packet required for verification of the uploaded application. @next ExtAppRootPacketAck

• required uint32 app_ring = 1

  / Application ring of the requested root packet