57 lines
1.4 KiB
Python
57 lines
1.4 KiB
Python
import hashlib
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import asyncio
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import unicodedata
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from binascii import hexlify
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from secrets import randbits
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from lbry.crypto.hash import hmac_sha512
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from . import words
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def get_languages():
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return words.languages
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def normalize(mnemonic: str) -> str:
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return ' '.join(unicodedata.normalize('NFKD', mnemonic).lower().split())
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def is_valid(language, mnemonic):
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local_words = getattr(words, language)
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for word in normalize(mnemonic).split():
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if word not in local_words:
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return False
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return bool(mnemonic)
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def sync_generate(language: str) -> str:
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local_words = getattr(words, language)
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entropy = randbits(132)
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nonce = 0
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while True:
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nonce += 1
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i = entropy + nonce
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w = []
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while i:
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w.append(local_words[i % 2048])
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i //= 2048
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seed = ' '.join(w)
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if hexlify(hmac_sha512(b"Seed version", seed.encode())).startswith(b"01"):
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break
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return seed
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def sync_to_seed(mnemonic: str) -> bytes:
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return hashlib.pbkdf2_hmac('sha512', normalize(mnemonic).encode(), b'lbryum', 2048)
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async def generate(language: str) -> str:
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return await asyncio.get_running_loop().run_in_executor(
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None, sync_generate, language
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)
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async def to_seed(mnemonic: str) -> bytes:
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return await asyncio.get_running_loop().run_in_executor(
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None, sync_to_seed, mnemonic
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)
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