LBRYFoundation/LBRY-Vault
1
0
Fork 0
mirror of https://github.com/LBRYFoundation/LBRY-Vault.git synced 2025-08-23 17:47:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

ecc: hard fail if libsecp256k1 is not found/usable

Browse source
This commit is contained in:
SomberNight 2020-02-06 21:31:58 +01:00
parent de1ca27d63
commit 1d72585b7d
No known key found for this signature in database
GPG key ID: B33B5F232C6271E9
1 changed files with 26 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
electrum/ecc_fast.py
View file

@ -33,6 +33,9 @@ SECP256K1_EC_COMPRESSED = (SECP256K1_FLAGS_TYPE_COMPRESSION | SECP256K1_FLAGS_BI
SECP256K1_EC_UNCOMPRESSED = (SECP256K1_FLAGS_TYPE_COMPRESSION)
class LibModuleMissing(Exception): pass
def load_library():
if sys.platform == 'darwin':
library_path = 'libsecp256k1.0.dylib'
@ -45,7 +48,7 @@ def load_library():
secp256k1 = ctypes.cdll.LoadLibrary(library_path)
if not secp256k1:
_logger.warning('libsecp256k1 library failed to load')
_logger.error('libsecp256k1 library failed to load')
return None
try:
@ -91,26 +94,36 @@ def load_library():
secp256k1.secp256k1_ec_pubkey_combine.argtypes = [c_void_p, c_char_p, c_void_p, c_size_t]
secp256k1.secp256k1_ec_pubkey_combine.restype = c_int
# --enable-module-recovery
try:
secp256k1.secp256k1_ecdsa_recover.argtypes = [c_void_p, c_char_p, c_char_p, c_char_p]
secp256k1.secp256k1_ecdsa_recover.restype = c_int
secp256k1.secp256k1_ecdsa_recoverable_signature_parse_compact.argtypes = [c_void_p, c_char_p, c_char_p, c_int]
secp256k1.secp256k1_ecdsa_recoverable_signature_parse_compact.restype = c_int
except (OSError, AttributeError):
raise LibModuleMissing('libsecp256k1 library found but it was built '
'without required module (--enable-module-recovery)')
secp256k1.ctx = secp256k1.secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY)
ret = secp256k1.secp256k1_context_randomize(secp256k1.ctx, os.urandom(32))
if ret:
if not ret:
_logger.error('secp256k1_context_randomize failed')
return None
return secp256k1
else:
_logger.warning('secp256k1_context_randomize failed')
return None
except (OSError, AttributeError):
_logger.warning('libsecp256k1 library was found and loaded but there was an error when using it')
except (OSError, AttributeError) as e:
_logger.error(f'libsecp256k1 library was found and loaded but there was an error when using it: {repr(e)}')
return None
_libsecp256k1 = None
try:
_libsecp256k1 = load_library()
except BaseException as e:
_logger.warning(f'failed to load libsecp256k1: {repr(e)}')
_libsecp256k1 = None
_logger.error(f'failed to load libsecp256k1: {repr(e)}')
if _libsecp256k1 is None:
# hard fail:
sys.exit(f"Error: Failed to load libsecp256k1.")