package hw.trezor.messages.ethereum_eip712

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* Request: Ask device to sign typed data @start @next EthereumTypedDataStructRequest @next EthereumTypedDataValueRequest @next EthereumTypedDataSignature @next Failure

• repeated uint32 address_n = 1

  BIP-32 path to derive the key from master node

• required string primary_type = 2

  name of the root message struct

• optional bool metamask_v4_compat = 3

  use MetaMask v4, see

• optional ethereum.EthereumDefinitions definitions = 4

  https://github.com/MetaMask/eth-sig-util/issues/106

  network and/or token definitions

• optional bytes show_message_hash = 5

  hash of the typed data to be signed (if set, user will

* Request: Type information about a struct. @next EthereumTypedDataStructRequest

• repeated EthereumTypedDataStructAck.EthereumStructMember members = 1

Used in: EthereumFieldType

• UINT = 1

• INT = 2

• BYTES = 3

• STRING = 4

• BOOL = 5

• ADDRESS = 6

• ARRAY = 7

• STRUCT = 8

Used in: EthereumStructMember

• required EthereumDataType data_type = 1

• optional uint32 size = 2

  for integer types: size in bytes (uint8 has size 1, uint256 has size 32)

• optional EthereumFieldType entry_type = 3

  for bytes types: size in bytes, or unset for dynamic for arrays: size in elements, or unset for dynamic for structs: number of members for string, bool and address: unset

  for array types, type of single entry

• optional string struct_name = 4

  for structs: its name

Used in: EthereumTypedDataStructAck

• required EthereumFieldType type = 1

• required string name = 2

* Response: Device asks for type information about a struct. @next EthereumTypedDataStructAck

• required string name = 1

  name of the requested struct

* Request: Single value of a specific atomic field. @next EthereumTypedDataValueRequest

• required bytes value = 1

  * atomic types: value of the member. Length must match the `size` of the corresponding field type, unless the size is dynamic. * array types: number of elements, encoded as uint16. * struct types: undefined, Trezor will not query a struct field.

* Response: Device asks for data at the specific member path. @next EthereumTypedDataValueAck

• repeated uint32 member_path = 1

  member path requested by device