sangge/tpre-python
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main #16

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sangge merged 4 commits from :main into main 2023-10-23 14:10:14 +08:00
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src/tpre.py
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@ -272,7 +272,7 @@ def f(x: int, f_modulus: list, T: int) -> int:
return res return res
def GenerateReKey(sk_A: int, pk_B: point, N: int, T: int) -> list: def GenerateReKey(sk_A: int, pk_B: point, N: int, T: int, id_tuple: Tuple[int,...]) -> list:
""" """
param: param:
skA, pkB, N(节点总数), T(阈值) skA, pkB, N(节点总数), T(阈值)
@ -288,7 +288,7 @@ def GenerateReKey(sk_A: int, pk_B: point, N: int, T: int) -> list:
# d是Bob的密钥对与临时密钥对的非交互式Diffie-Hellman密钥交换的结果 # d是Bob的密钥对与临时密钥对的非交互式Diffie-Hellman密钥交换的结果
d = hash3((X_A, pk_B, multiply(pk_B, x_A))) d = hash3((X_A, pk_B, multiply(pk_B, x_A)))
# 计算多项式系数, 确定代理节点的ID(一个点) # 计算多项式系数
f_modulus = [] f_modulus = []
# 计算f0 # 计算f0
# f0 = (sk_A * inv(d, G.P)) % G.P # f0 = (sk_A * inv(d, G.P)) % G.P
@ -305,10 +305,10 @@ def GenerateReKey(sk_A: int, pk_B: point, N: int, T: int) -> list:
for i in range(N): for i in range(N):
y = random.randint(0, sm2p256v1.N - 1) y = random.randint(0, sm2p256v1.N - 1)
Y = multiply(g, y) Y = multiply(g, y)
s_x = hash5(i, D) # id需要设置 s_x = hash5(id_tuple[i], D) # id需要设置
r_k = f(s_x, f_modulus, T) r_k = f(s_x, f_modulus, T)
U1 = multiply(U, r_k) U1 = multiply(U, r_k)
kFrag = (i, r_k, X_A, U1) kFrag = (id_tuple[i], r_k, X_A, U1)
KF.append(kFrag) KF.append(kFrag)
return KF return KF