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Infer a point on a curve from the private part.

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Viktor Dragomiretskyy 2020-08-01 22:07:57 +12:00
parent ca3b6f0142
commit d6e712a075
1 changed files with 5 additions and 5 deletions
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10
validitysensor/tls.py
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@ -520,11 +520,11 @@ class Tls():
self.trace('y=0x%x' % y)
self.trace('d=0x%x' % d)
# Someone has reported that x and y are 0 after pairing with the latest windows driver,
# for compatibility we could derive x and y with a following call:
#ec.derive_private_key(d, ec.SECP256R1(), backend=crypto_backend)
# Someone has reported that x and y are 0 after pairing with the latest windows driver.
#pub_key = ec.EllipticCurvePublicNumbers(x, y, ec.SECP256R1())
#self.priv_key = ec.EllipticCurvePrivateNumbers(d, pub_key).private_key(crypto_backend)
self.priv_key = ec.derive_private_key(d, ec.SECP256R1(), backend=crypto_backend)
pub_key = ec.EllipticCurvePublicNumbers(x, y, ec.SECP256R1())
self.priv_key = ec.EllipticCurvePrivateNumbers(d, pub_key).private_key(crypto_backend)
tls = Tls(usb)