core, legacy: remove passphrase_cached

common/protob/messages-management.proto

@@ -51,7 +51,7 @@ message Features {
     optional bytes bootloader_hash = 14;        // hash of the bootloader
     optional bool imported = 15;                // was storage imported from an external source?
     optional bool pin_cached = 16;              // is PIN already cached in session?
-    optional bool passphrase_cached = 17;       // is passphrase already cached in session?
+//    optional bool passphrase_cached = 17;       // is passphrase already cached in session?  DEPRECATED
     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)

core/src/apps/homescreen/__init__.py

@@ -35,7 +35,6 @@ def get_features() -> Features:
     f.pin_protection = config.has_pin()
     f.pin_cached = config.has_pin()
     f.passphrase_protection = storage.device.is_passphrase_enabled()
-    # f.passphrase_cached = cache.has_passphrase()  # TODO
     f.needs_backup = storage.device.needs_backup()
     f.unfinished_backup = storage.device.unfinished_backup()
     f.no_backup = storage.device.no_backup()

core/src/trezor/messages/Features.py

@@ -32,7 +32,6 @@ class Features(p.MessageType):
         bootloader_hash: bytes = None,
         imported: bool = None,
         pin_cached: bool = None,
-        passphrase_cached: bool = None,
         firmware_present: bool = None,
         needs_backup: bool = None,
         flags: int = None,
@@ -68,7 +67,6 @@ class Features(p.MessageType):
         self.bootloader_hash = bootloader_hash
         self.imported = imported
         self.pin_cached = pin_cached
-        self.passphrase_cached = passphrase_cached
         self.firmware_present = firmware_present
         self.needs_backup = needs_backup
         self.flags = flags
@@ -107,7 +105,6 @@ class Features(p.MessageType):
             14: ('bootloader_hash', p.BytesType, 0),
             15: ('imported', p.BoolType, 0),
             16: ('pin_cached', p.BoolType, 0),
-            17: ('passphrase_cached', p.BoolType, 0),
             18: ('firmware_present', p.BoolType, 0),
             19: ('needs_backup', p.BoolType, 0),
             20: ('flags', p.UVarintType, 0),

legacy/firmware/config.h

@@ -108,8 +108,6 @@ bool config_getPassphraseProtection(bool *passphrase_protection);
 bool config_getHomescreen(uint8_t *dest, uint16_t dest_size);
 void config_setHomescreen(const uint8_t *data, uint32_t size);
 
-void session_cachePassphrase(const char *passphrase);
-bool session_isPassphraseCached(void);
 const uint8_t *session_getSessionId(void);
 
 bool config_setMnemonic(const char *mnemonic);

legacy/firmware/fsm_msg_common.h

@@ -73,8 +73,6 @@ void fsm_msgGetFeatures(const GetFeatures *msg) {
   resp->has_imported = config_getImported(&(resp->imported));
   resp->has_pin_cached = true;
   resp->pin_cached = session_isUnlocked() && config_hasPin();
-  //  resp->has_passphrase_cached = true;
-  //  resp->passphrase_cached = session_isPassphraseCached();
   resp->has_needs_backup = true;
   config_getNeedsBackup(&(resp->needs_backup));
   resp->has_unfinished_backup = true;

python/src/trezorlib/messages/Features.py

@@ -32,7 +32,6 @@ class Features(p.MessageType):
         bootloader_hash: bytes = None,
         imported: bool = None,
         pin_cached: bool = None,
-        passphrase_cached: bool = None,
         firmware_present: bool = None,
         needs_backup: bool = None,
         flags: int = None,
@@ -68,7 +67,6 @@ class Features(p.MessageType):
         self.bootloader_hash = bootloader_hash
         self.imported = imported
         self.pin_cached = pin_cached
-        self.passphrase_cached = passphrase_cached
         self.firmware_present = firmware_present
         self.needs_backup = needs_backup
         self.flags = flags
@@ -107,7 +105,6 @@ class Features(p.MessageType):
             14: ('bootloader_hash', p.BytesType, 0),
             15: ('imported', p.BoolType, 0),
             16: ('pin_cached', p.BoolType, 0),
-            17: ('passphrase_cached', p.BoolType, 0),
             18: ('firmware_present', p.BoolType, 0),
             19: ('needs_backup', p.BoolType, 0),
             20: ('flags', p.UVarintType, 0),