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git-subtree-dir: bip-0352/secp256k1lab git-subtree-split: 44dc4bd893b8f03e621585e3bf255253e0e0fbfb
16 lines
548 B
Python
16 lines
548 B
Python
from .secp256k1 import GE, G
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from .util import int_from_bytes
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# The following function is based on the BIP 327 reference implementation
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# https://github.com/bitcoin/bips/blob/master/bip-0327/reference.py
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# Return the plain public key corresponding to a given secret key
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def pubkey_gen_plain(seckey: bytes) -> bytes:
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d0 = int_from_bytes(seckey)
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if not (1 <= d0 <= GE.ORDER - 1):
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raise ValueError("The secret key must be an integer in the range 1..n-1.")
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P = d0 * G
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assert not P.infinity
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return P.to_bytes_compressed()
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