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fix burn -a and hash_to_curve is now hash_to_point

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This commit is contained in:
callebtc
2022-09-23 23:03:46 +03:00
parent 1a96423a47
commit a76f2ba698
3 changed files with 10 additions and 10 deletions
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10
core/b_dhke.py
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@@ -6,7 +6,7 @@ Alice:
A = a*G
return A
Bob:
Y = hash_to_curve(secret_message)
Y = hash_to_point(secret_message)
r = random blinding factor
B'= Y + r*G
return B'
@@ -20,7 +20,7 @@ C = C' - r*A
(= a*Y)
return C, secret_message
Alice:
Y = hash_to_curve(secret_message)
Y = hash_to_point(secret_message)
C == a*Y
If true, C must have originated from Alice
"""
@@ -30,7 +30,7 @@ import hashlib
from secp256k1 import PrivateKey, PublicKey
def hash_to_curve(secret_msg):
def hash_to_point(secret_msg):
"""Generates x coordinate from the message hash and checks if the point lies on the curve.
If it does not, it tries computing again a new x coordinate from the hash of the coordinate."""
point = None
@@ -51,7 +51,7 @@ def hash_to_curve(secret_msg):
def step1_alice(secret_msg):
secret_msg = secret_msg.encode("utf-8")
Y = hash_to_curve(secret_msg)
Y = hash_to_point(secret_msg)
r = PrivateKey()
B_ = Y + r.pubkey
return B_, r
@@ -68,7 +68,7 @@ def step3_alice(C_, r, A):
def verify(a, C, secret_msg):
Y = hash_to_curve(secret_msg.encode("utf-8"))
Y = hash_to_point(secret_msg.encode("utf-8"))
return C == Y.mult(a)