18 lines
572 B
Python
18 lines
572 B
Python
import ecdsa
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from hashlib import sha256
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class Verifier:
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def verify_rfc6979(self, public_key: bytes, message: bytes, signature: bytes) -> bool:
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if len(public_key) == 0 or public_key is None:
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raise ValueError(f"Incorrect public key: {public_key}")
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if message is None or signature is None:
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return False
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vk = ecdsa.VerifyingKey.from_string(public_key, curve=ecdsa.SECP256k1, hashfunc=sha256)
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try:
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return vk.verify(signature, message)
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except ecdsa.BadSignatureError:
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return False
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