syntax = "proto2"; package hw.trezor.messages.management; // Sugar for easier handling in Java option java_package = "com.satoshilabs.trezor.lib.protobuf"; option java_outer_classname = "TrezorMessageManagement"; option (include_in_bitcoin_only) = true; import "messages.proto"; /** * Type of the mnemonic backup given/received by the device during reset/recovery. */ enum BackupType { Bip39 = 0; // also called "Single Backup", see BIP-0039 Slip39_Basic = 1; // also called "Shamir Backup", see SLIP-0039 Slip39_Advanced = 2; // also called "Super Shamir" or "Shamir with Groups", see SLIP-0039#two-level-scheme } /** * Level of safety checks for unsafe actions like spending from invalid path namespace or setting high transaction fee. */ enum SafetyCheckLevel { Strict = 0; // disallow unsafe actions, this is the default PromptAlways = 1; // ask user before unsafe action PromptTemporarily = 2; // like PromptAlways but reverts to Strict after reboot } /** * Format of the homescreen image */ enum HomescreenFormat { Toif144x144 = 1; Jpeg240x240 = 2; } /** * Request: Reset device to default state and ask for device details * @start * @next Features */ message Initialize { optional bytes session_id = 1; // assumed device session id; Trezor clears caches if it is different or empty optional bool _skip_passphrase = 2 [deprecated=true]; // removed as part of passphrase redesign optional bool derive_cardano = 3; // whether to derive Cardano Icarus root keys in this session } /** * Request: Ask for device details (no device reset) * @start * @next Features */ message GetFeatures { } /** * Response: Reports various information about the device * @end */ message Features { optional string vendor = 1; // name of the manufacturer, e.g. "trezor.io" required uint32 major_version = 2; // major version of the firmware/bootloader, e.g. 1 required uint32 minor_version = 3; // minor version of the firmware/bootloader, e.g. 0 required uint32 patch_version = 4; // patch version of the firmware/bootloader, e.g. 0 optional bool bootloader_mode = 5; // is device in bootloader mode? optional string device_id = 6; // device's unique identifier optional bool pin_protection = 7; // is device protected by PIN? optional bool passphrase_protection = 8; // is node/mnemonic encrypted using passphrase? optional string language = 9; // device language optional string label = 10; // device description label optional bool initialized = 12; // does device contain seed? optional bytes revision = 13; // SCM revision of firmware optional bytes bootloader_hash = 14; // hash of the bootloader optional bool imported = 15; // was storage imported from an external source? optional bool unlocked = 16; // is the device unlocked? called "pin_cached" previously optional bool _passphrase_cached = 17 [deprecated=true]; // is passphrase already cached in session? optional bool firmware_present = 18; // is valid firmware loaded? optional bool needs_backup = 19; // does storage need backup? (equals to Storage.needs_backup) optional uint32 flags = 20; // device flags (equals to Storage.flags) optional string model = 21; // device hardware model optional uint32 fw_major = 22; // reported firmware version if in bootloader mode optional uint32 fw_minor = 23; // reported firmware version if in bootloader mode optional uint32 fw_patch = 24; // reported firmware version if in bootloader mode optional string fw_vendor = 25; // reported firmware vendor if in bootloader mode // optional bytes fw_vendor_keys = 26; // obsoleted, use fw_vendor optional bool unfinished_backup = 27; // report unfinished backup (equals to Storage.unfinished_backup) optional bool no_backup = 28; // report no backup (equals to Storage.no_backup) optional bool recovery_mode = 29; // is recovery mode in progress repeated Capability capabilities = 30; // list of supported capabilities enum Capability { option (has_bitcoin_only_values) = true; Capability_Bitcoin = 1 [(bitcoin_only) = true]; Capability_Bitcoin_like = 2; // Altcoins based on the Bitcoin source code Capability_Binance = 3; Capability_Cardano = 4; Capability_Crypto = 5 [(bitcoin_only) = true]; // generic crypto operations for GPG, SSH, etc. Capability_EOS = 6; Capability_Ethereum = 7; Capability_Lisk = 8 [deprecated = true]; Capability_Monero = 9; Capability_NEM = 10; Capability_Ripple = 11; Capability_Stellar = 12; Capability_Tezos = 13; Capability_U2F = 14; Capability_Shamir = 15 [(bitcoin_only) = true]; Capability_ShamirGroups = 16 [(bitcoin_only) = true]; Capability_PassphraseEntry = 17 [(bitcoin_only) = true]; // the device is capable of passphrase entry directly on the device } optional BackupType backup_type = 31; // type of device backup (BIP-39 / SLIP-39 basic / SLIP-39 advanced) optional bool sd_card_present = 32; // is SD card present optional bool sd_protection = 33; // is SD Protect enabled optional bool wipe_code_protection = 34; // is wipe code protection enabled optional bytes session_id = 35; optional bool passphrase_always_on_device = 36; // device enforces passphrase entry on Trezor optional SafetyCheckLevel safety_checks = 37; // safety check level, set to Prompt to limit path namespace enforcement optional uint32 auto_lock_delay_ms = 38; // number of milliseconds after which the device locks itself optional uint32 display_rotation = 39; // in degrees from North optional bool experimental_features = 40; // are experimental message types enabled? optional bool busy = 41; // is the device busy, showing "Do not disconnect"? optional HomescreenFormat homescreen_format = 42; // format of the homescreen, 1 = TOIf 144x144, 2 = jpg 240x240 optional bool hide_passphrase_from_host = 43; // should we hide the passphrase when it comes from host? } /** * Request: soft-lock the device. Following actions will require PIN. Passphrases remain cached. * @start * @next Success */ message LockDevice { } /** * Request: Show a "Do not disconnect" dialog instead of the standard homescreen. * @start * @next Success */ message SetBusy { optional uint32 expiry_ms = 1; // The time in milliseconds after which the dialog will automatically disappear. Overrides any previously set expiry. If not set, then the dialog is hidden. } /** * Request: end the current sesson. Following actions must call Initialize again. * Cache for the current session is discarded, other sessions remain intact. * Device is not PIN-locked. * @start * @next Success */ message EndSession { } /** * Request: change language and/or label of the device * @start * @next Success * @next Failure */ message ApplySettings { optional string language = 1; optional string label = 2; optional bool use_passphrase = 3; optional bytes homescreen = 4; optional uint32 _passphrase_source = 5 [deprecated=true]; // ASK = 0; DEVICE = 1; HOST = 2; optional uint32 auto_lock_delay_ms = 6; optional uint32 display_rotation = 7; // in degrees from North optional bool passphrase_always_on_device = 8; // do not prompt for passphrase, enforce device entry optional SafetyCheckLevel safety_checks = 9; // Safety check level, set to Prompt to limit path namespace enforcement optional bool experimental_features = 10; // enable experimental message types optional bool hide_passphrase_from_host = 11; // do not show passphrase coming from host } /** * Request: set flags of the device * @start * @next Success * @next Failure */ message ApplyFlags { required uint32 flags = 1; // bitmask, can only set bits, not unset } /** * Request: Starts workflow for setting/changing/removing the PIN * @start * @next Success * @next Failure */ message ChangePin { optional bool remove = 1; // is PIN removal requested? } /** * Request: Starts workflow for setting/removing the wipe code * @start * @next Success * @next Failure */ message ChangeWipeCode { optional bool remove = 1; // is wipe code removal requested? } /** * Request: Starts workflow for enabling/regenerating/disabling SD card protection * @start * @next Success * @next Failure */ message SdProtect { required SdProtectOperationType operation = 1; /** * Structure representing SD card protection operation */ enum SdProtectOperationType { DISABLE = 0; ENABLE = 1; REFRESH = 2; } } /** * Request: Test if the device is alive, device sends back the message in Success response * @start * @next Success */ message Ping { optional string message = 1 [default=""]; // message to send back in Success message optional bool button_protection = 2; // ask for button press } /** * Request: Abort last operation that required user interaction * @start * @next Failure */ message Cancel { } /** * Request: Request a sample of random data generated by hardware RNG. May be used for testing. * @start * @next Entropy * @next Failure */ message GetEntropy { required uint32 size = 1; // size of requested entropy } /** * Response: Reply with random data generated by internal RNG * @end */ message Entropy { required bytes entropy = 1; // chunk of random generated bytes } /** * Request: Get a hash of the installed firmware combined with an optional challenge. * @start * @next FirmwareHash * @next Failure */ message GetFirmwareHash { optional bytes challenge = 1; // Blake2s key up to 32 bytes in length. } /** * Response: Hash of the installed firmware combined with the optional challenge. * @end */ message FirmwareHash { required bytes hash = 1; } /** * Request: Request device to wipe all sensitive data and settings * @start * @next Success * @next Failure */ message WipeDevice { } /** * Request: Load seed and related internal settings from the computer * @start * @next Success * @next Failure */ message LoadDevice { repeated string mnemonics = 1; // seed encoded as mnemonic (12, 18 or 24 words for BIP39, 20 or 33 for SLIP39) optional string pin = 3; // set PIN protection optional bool passphrase_protection = 4; // enable master node encryption using passphrase optional string language = 5 [default='en-US']; // device language (IETF BCP 47 language tag) optional string label = 6; // device label optional bool skip_checksum = 7; // do not test mnemonic for valid BIP-39 checksum optional uint32 u2f_counter = 8; // U2F counter optional bool needs_backup = 9; // set "needs backup" flag optional bool no_backup = 10; // indicate that no backup is going to be made } /** * Request: Ask device to do initialization involving user interaction * @start * @next EntropyRequest * @next Failure */ message ResetDevice { optional bool display_random = 1; // display entropy generated by the device before asking for additional entropy optional uint32 strength = 2 [default=256]; // strength of seed in bits optional bool passphrase_protection = 3; // enable master node encryption using passphrase optional bool pin_protection = 4; // enable PIN protection optional string language = 5 [default='en-US']; // device language (IETF BCP 47 language tag) optional string label = 6; // device label optional uint32 u2f_counter = 7; // U2F counter optional bool skip_backup = 8; // postpone seed backup to BackupDevice workflow optional bool no_backup = 9; // indicate that no backup is going to be made optional BackupType backup_type = 10 [default=Bip39]; // type of the mnemonic backup } /** * Request: Perform backup of the device seed if not backed up using ResetDevice * @start * @next Success */ message BackupDevice { } /** * Response: Ask for additional entropy from host computer * @next EntropyAck */ message EntropyRequest { } /** * Request: Provide additional entropy for seed generation function * @next Success */ message EntropyAck { required bytes entropy = 1; // 256 bits (32 bytes) of random data } /** * Request: Start recovery workflow asking user for specific words of mnemonic * Used to recovery device safely even on untrusted computer. * @start * @next WordRequest */ message RecoveryDevice { optional uint32 word_count = 1; // number of words in BIP-39 mnemonic optional bool passphrase_protection = 2; // enable master node encryption using passphrase optional bool pin_protection = 3; // enable PIN protection optional string language = 4; // device language (IETF BCP 47 language tag) optional string label = 5; // device label optional bool enforce_wordlist = 6; // enforce BIP-39 wordlist during the process // 7 reserved for unused recovery method optional RecoveryDeviceType type = 8; // supported recovery type optional uint32 u2f_counter = 9; // U2F counter optional bool dry_run = 10; // perform dry-run recovery workflow (for safe mnemonic validation) /** * Type of recovery procedure. These should be used as bitmask, e.g., * `RecoveryDeviceType_ScrambledWords | RecoveryDeviceType_Matrix` * listing every method supported by the host computer. * * Note that ScrambledWords must be supported by every implementation * for backward compatibility; there is no way to not support it. */ enum RecoveryDeviceType { // use powers of two when extending this field RecoveryDeviceType_ScrambledWords = 0; // words in scrambled order RecoveryDeviceType_Matrix = 1; // matrix recovery type } } /** * Response: Device is waiting for user to enter word of the mnemonic * Its position is shown only on device's internal display. * @next WordAck */ message WordRequest { required WordRequestType type = 1; /** * Type of Recovery Word request */ enum WordRequestType { WordRequestType_Plain = 0; WordRequestType_Matrix9 = 1; WordRequestType_Matrix6 = 2; } } /** * Request: Computer replies with word from the mnemonic * @next WordRequest * @next Success * @next Failure */ message WordAck { required string word = 1; // one word of mnemonic on asked position } /** * Request: Set U2F counter * @start * @next Success */ message SetU2FCounter { required uint32 u2f_counter = 1; } /** * Request: Set U2F counter * @start * @next NextU2FCounter */ message GetNextU2FCounter { } /** * Request: Set U2F counter * @end */ message NextU2FCounter { required uint32 u2f_counter = 1; } /** * Request: Ask device to prepare for a preauthorized operation. * @start * @next PreauthorizedRequest * @next Failure */ message DoPreauthorized { } /** * Request: Device awaits a preauthorized operation. * @start * @next SignTx * @next GetOwnershipProof */ message PreauthorizedRequest { } /** * Request: Cancel any outstanding authorization in the current session. * @start * @next Success * @next Failure */ message CancelAuthorization { } /** * Request: Reboot firmware to bootloader * @start * @next Success */ message RebootToBootloader { } /** * Request: Ask device to generate a random nonce and store it in the session's cache * @start * @next Nonce */ message GetNonce { option (experimental_message) = true; } /** * Response: Contains a random nonce * @end */ message Nonce { option (experimental_message) = true; required bytes nonce = 1; // a 32-byte random value generated by Trezor } /** * Request: Ask device to unlock a subtree of the keychain. * @start * @next UnlockedPathRequest * @next Failure */ message UnlockPath { repeated uint32 address_n = 1; // prefix of the BIP-32 path leading to the account (m / purpose') optional bytes mac = 2; // the MAC returned by UnlockedPathRequest } /** * Request: Device awaits an operation. * @start * @next SignTx * @next GetPublicKey * @next GetAddress */ message UnlockedPathRequest { optional bytes mac = 1; // authentication code for future UnlockPath calls }