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import base64 |
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import bech32 |
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import ecdsa |
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import hashlib |
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import hdwallets |
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import mnemonic |
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from tradehub.utils import sort_and_stringify_json |
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class Wallet(object): |
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_DEFAULT_DERIVATION_PATH = "m/44'/118'/0'/0/0" |
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def __init__(self, mnemonic: str = None, network: str = "testnet"): |
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""" |
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""" |
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self.DEFAULT_BECH32_PREFIX_DICT = { |
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"main": "swth", |
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"mainnet": "swth", |
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"test": "tswth", |
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"testnet": "tswth", |
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} |
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self.DEFAULT_BECH32_PREFIX = self.DEFAULT_BECH32_PREFIX_DICT[network.lower()] |
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if mnemonic and len(mnemonic.split()) in [12, 24]: |
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self._mnemonic = mnemonic |
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else: |
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self._mnemonic = self.generate_12_word_wallet() |
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self._private_key = self.mnemonic_to_private_key(mnemonic_phrase=self._mnemonic) |
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self.public_key = self.private_key_to_public_key(private_key=self._private_key) |
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self.base64_public_key = base64.b64encode(self.public_key).decode("utf-8") |
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self.address = self.private_key_to_address(private_key=self._private_key) |
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def generate_12_word_wallet(self): |
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return mnemonic.Mnemonic(language="english").generate(strength=128) |
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def generate_24_word_wallet(self): |
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return mnemonic.Mnemonic(language="english").generate(strength=256) |
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def mnemonic_to_private_key(self, mnemonic_phrase: str = None, wallet_path: str = _DEFAULT_DERIVATION_PATH) -> bytes: |
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mnemonic_bytes = mnemonic.Mnemonic.to_seed(mnemonic_phrase, passphrase="") |
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hd_wallet = hdwallets.BIP32.from_seed(mnemonic_bytes) |
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self._private_key = hd_wallet.get_privkey_from_path(wallet_path) |
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return self._private_key |
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def private_key_to_public_key(self, private_key: bytes = None) -> bytes: |
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privkey_obj = ecdsa.SigningKey.from_string(self._private_key, curve=ecdsa.SECP256k1) |
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self.public_key_obj = privkey_obj.get_verifying_key() |
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self.public_key = self.public_key_obj.to_string("compressed") |
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return self.public_key |
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def public_key_to_address(self, public_key: bytes = None, hrp: str = None) -> str: |
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if hrp is None: |
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hrp = self.DEFAULT_BECH32_PREFIX |
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s = hashlib.new("sha256", public_key).digest() |
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r = hashlib.new("ripemd160", s).digest() |
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five_bit_r = bech32.convertbits(r, 8, 5) |
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assert five_bit_r is not None, "Unsuccessful bech32.convertbits call" |
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return bech32.bech32_encode(hrp, five_bit_r) |
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def private_key_to_address(self, private_key: bytes = None, hrp: str = None) -> str: |
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if hrp is None: |
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hrp = self.DEFAULT_BECH32_PREFIX |
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public_key = self.private_key_to_public_key(private_key) |
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return self.public_key_to_address(public_key=public_key, hrp=hrp) |
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def _sign(self, message: dict) -> str: |
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message_str = sort_and_stringify_json(message=message) |
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message_bytes = message_str.encode("utf-8") |
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private_key = ecdsa.SigningKey.from_string(self._private_key, curve=ecdsa.SECP256k1) |
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signature_compact = private_key.sign_deterministic( |
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message_bytes, |
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hashfunc=hashlib.sha256, |
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sigencode=ecdsa.util.sigencode_string_canonize |
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) |
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signature_base64_str = base64.b64encode(signature_compact).decode("utf-8") |
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return signature_base64_str |
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Mai-Te-Pora /
tradehub-python
