sangge/tpre-python
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feat: finish setup() and GenKeyPair()

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sangge 2023-10-13 21:50:10 +08:00
parent 5d7fda5705
commit b3dcf06fd5
1 changed files with 32 additions and 12 deletions
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44
src/tpre.py
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@ -28,7 +28,7 @@ def multiply(a: Tuple[int, int], n: int) -> Tuple[int, int]:
P = sm2p256v1.P
return fromJacobian(jacobianMultiply(toJacobian(a), n, N, A, P), P)
def add(a: Tuple[int, int], b: Tuple[int, int], A: int, P: int) -> Tuple[int, int]:
def add(a: Tuple[int, int], b: Tuple[int, int]) -> Tuple[int, int]:
A = sm2p256v1.A
P = sm2p256v1.P
return fromJacobian(jacobianAdd(toJacobian(a), toJacobian(b), A, P), P)
@ -116,22 +116,44 @@ def jacobianMultiply(
return jacobianAdd(jacobianDouble(jacobianMultiply((Xp, Yp, Zp), n // 2, N, A, P), A, P), (Xp, Yp, Zp), A, P)
raise ValueError("jacobian Multiply error")
def Setup(sec: int) -> Tuple[int, int, int, Callable, Callable, Callable, Callable]:
def Setup(sec: int) -> Tuple[CurveFp, Tuple[int, int],
Tuple[int, int], Callable,
Callable, Callable, Callable]:
'''
params:
sec: an init safety param
return:
G:
G: sm2 curve
g: generator
U: another generator
sm3
hash2: G^2 -> Zq
hash3: G^3 -> Zq
hash4: G^3 * Zq -> Zq
'''
G = sm2p256v1
g = (sm2p256v1.Gx, sm2p256v1.Gy)
tmp_u = sec
U = multiply(g, tmp_u)
hash2 = Sm3() #pylint: disable=e0602
hash3 = Sm3() #pylint: disable=e0602
hash4 = Sm3() #pylint: disable=e0602
KDF = Sm3() #pylint: disable=e0602
return G, g, U, hash2, hash3, hash4, KDF
def GenerateKeyPair(
lamda_parma: int,
public_params: tuple
) -> Tuple[Tuple[bytes, bytes], bytes]:
) -> Tuple[Tuple[int, int], int]:
'''
params:
lamda_param: an init safety param
@ -140,16 +162,14 @@ def GenerateKeyPair(
return:
public_key, secret_key
'''
sm2 = Sm2Key()
sm2 = Sm2Key() #pylint: disable=e0602
sm2.generate_key()
public_key_x = bytes(sm2.public_key.x)
public_key_y = bytes(sm2.public_key.y)
public_key_x = int.from_bytes(bytes(sm2.public_key.x),"big")
public_key_y = int.from_bytes(bytes(sm2.public_key.y),"big")
public_key = (public_key_x, public_key_y)
secret_key = bytes(sm2.private_key)
print(private_key)
secret_key = int.from_bytes(bytes(sm2.private_key),"big")
return public_key, secret_key