Commit de855d0a authored by Vincent Texier's avatar Vincent Texier

Merge branch '71_handle_seedhex' into 'dev'

#71: handle seedhex

See merge request !54
parents 8bcc1373 36572ae8
Pipeline #4416 passed with stages
in 3 minutes and 43 seconds
from typing import Union
from libnacl.encode import hex_decode, hex_encode
def ensure_bytes(data: Union[str, bytes]) -> bytes:
......@@ -39,3 +40,23 @@ def xor_bytes(b1: bytes, b2: bytes) -> bytearray:
for i1, i2 in zip(b1, b2):
result.append(i1 ^ i2)
return result
def convert_seedhex_to_seed(seedhex: str) -> bytes:
Convert seedhex to seed
:param seedhex: seed coded in hexadecimal base
:rtype bytes:
return bytes(hex_decode(seedhex.encode("utf-8")))
def convert_seed_to_seedhex(seed: bytes) -> str:
Convert seed to seedhex
:param seed: seed
:rtype str:
return hex_encode(seed).decode("utf-8")
......@@ -12,7 +12,7 @@ from libnacl.utils import load_key
from pylibscrypt import scrypt
from .base58 import Base58Encoder
from ..helpers import ensure_bytes, xor_bytes
from ..helpers import ensure_bytes, xor_bytes, convert_seedhex_to_seed, convert_seed_to_seedhex
SEED_LENGTH = 32 # Length of the key
crypto_sign_BYTES = 64
......@@ -68,6 +68,42 @@ class SigningKey(libnacl.sign.Signer):
return cls(seed)
def save_seedhex_file(self, path: str) -> None:
Save hexadecimal seed file from seed
:param path: Authentication file path
seedhex = convert_seed_to_seedhex(self.seed)
with open(path, 'w') as fh:
def from_seedhex_file(path: str) -> SigningKeyType:
Return SigningKey instance from Seedhex file
:param str path: Hexadecimal seed file path
with open(path, 'r') as fh:
seedhex =
return SigningKey.from_seedhex(seedhex)
def from_seedhex(cls: Type[SigningKeyType], seedhex: str) -> SigningKeyType:
Return SigningKey instance from Seedhex
:param str seedhex: Hexadecimal seed string
regex_seedhex = compile("([0-9a-fA-F]{64})")
match = search(regex_seedhex, seedhex)
if not match:
raise Exception('Error: Bad seed hexadecimal format')
seedhex = match.groups()[0]
seed = convert_seedhex_to_seed(seedhex)
return cls(seed)
def save_private_key(self, path: str) -> None:
Save authentication file
......@@ -111,8 +147,8 @@ class SigningKey(libnacl.sign.Signer):
pubsec_content =
# line patterns
regex_pubkey = compile("pub: ([1-9A-HJ-NP-Za-km-z]+)", MULTILINE)
regex_signkey = compile("sec: ([1-9A-HJ-NP-Za-km-z]+)", MULTILINE)
regex_pubkey = compile("pub: ([1-9A-HJ-NP-Za-km-z]{43,44})", MULTILINE)
regex_signkey = compile("sec: ([1-9A-HJ-NP-Za-km-z]{88,90})", MULTILINE)
# check public key field
match = search(regex_pubkey, pubsec_content)
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