async def _compute_seed(ctx: wire.Context) -> bytes:
passphrase = cache.get_passphrase()
if passphrase is None:
passphrase = await protect_by_passphrase(ctx)
cache.set_passphrase(passphrase)
seed = mnemonic.get_seed(passphrase)
cache.set_seed(seed)
return seed
async def _get_cached_seed(ctx: wire.Context) -> bytes:
if not storage.is_initialized():
raise wire.ProcessError('Device is not initialized')
if cache.get_seed() is None:
passphrase = await _get_cached_passphrase(ctx)
seed = bip39.seed(storage.get_mnemonic(), passphrase)
cache.set_seed(seed)
return cache.get_seed()
async def _compute_seed(ctx: wire.Context) -> bytes:
passphrase = cache.get_passphrase()
if passphrase is None:
passphrase = await protect_by_passphrase(ctx)
cache.set_passphrase(passphrase)
_start_bip39_progress()
seed = bip39.seed(storage.get_mnemonic(), passphrase, _render_bip39_progress)
cache.set_seed(seed)
return seed
async def get_keychain(ctx: wire.Context, namespaces: list) -> Keychain:
if not storage.is_initialized():
raise wire.ProcessError("Device is not initialized")
seed = cache.get_seed()
if seed is None:
passphrase = cache.get_passphrase()
if passphrase is None:
passphrase = await protect_by_passphrase(ctx)
cache.set_passphrase(passphrase)
seed = mnemonic.get_seed(passphrase)
cache.set_seed(seed)
keychain = Keychain(seed, namespaces)
return keychain
async def get_keychain(ctx: wire.Context, namespaces: list) -> Keychain:
if not storage.is_initialized():
raise wire.ProcessError("Device is not initialized")
seed = cache.get_seed()
if seed is None:
# derive seed from mnemonic and passphrase
passphrase = cache.get_passphrase()
if passphrase is None:
passphrase = await protect_by_passphrase(ctx)
cache.set_passphrase(passphrase)
_start_bip39_progress()
seed = bip39.seed(storage.get_mnemonic(), passphrase,
_render_bip39_progress)
cache.set_seed(seed)
keychain = Keychain(seed, namespaces)
return keychain
async def get_keychain(ctx: wire.Context) -> Keychain:
if not storage.is_initialized():
raise wire.ProcessError("Device is not initialized")
if mnemonic.is_bip39():
# derive the root node from mnemonic and passphrase
passphrase = await _get_passphrase(ctx)
root = bip32.from_mnemonic_cardano(mnemonic.get_secret().decode(),
passphrase)
else:
seed = cache.get_seed()
if seed is None:
passphrase = await _get_passphrase(ctx)
seed = mnemonic.get_seed(passphrase)
cache.set_seed(seed)
root = bip32.from_seed(seed, "ed25519 cardano seed")
# derive the namespaced root node
for i in SEED_NAMESPACE:
root.derive_cardano(i)
keychain = Keychain(SEED_NAMESPACE, root)
return keychain
async def _get_seed(ctx: wire.Context) -> bytes:
if cache.get_seed() is None:
seed, passphrase = await _compute_seed(ctx)
cache.set_seed(seed, passphrase)
return cache.get_seed()
