mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-22 14:28:07 +00:00
354 lines
9.2 KiB
Python
Executable File
354 lines
9.2 KiB
Python
Executable File
#!/usr/bin/py.test
|
|
import binascii
|
|
import ctypes as c
|
|
import hashlib
|
|
import os
|
|
import random
|
|
|
|
import curve25519
|
|
import ecdsa
|
|
import pytest
|
|
|
|
|
|
def bytes2num(s):
|
|
res = 0
|
|
for i, b in enumerate(reversed(bytearray(s))):
|
|
res += b << (i * 8)
|
|
return res
|
|
|
|
|
|
curves = {"nist256p1": ecdsa.curves.NIST256p, "secp256k1": ecdsa.curves.SECP256k1}
|
|
|
|
|
|
class Point:
|
|
def __init__(self, name, x, y):
|
|
self.curve = name
|
|
self.x = x
|
|
self.y = y
|
|
|
|
|
|
points = [
|
|
Point(
|
|
"secp256k1",
|
|
0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798,
|
|
0x483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8,
|
|
),
|
|
Point(
|
|
"secp256k1",
|
|
0x1,
|
|
0x4218F20AE6C646B363DB68605822FB14264CA8D2587FDD6FBC750D587E76A7EE,
|
|
),
|
|
Point(
|
|
"secp256k1",
|
|
0x2,
|
|
0x66FBE727B2BA09E09F5A98D70A5EFCE8424C5FA425BBDA1C511F860657B8535E,
|
|
),
|
|
Point(
|
|
"secp256k1",
|
|
0x1B,
|
|
0x1ADCEA1CF831B0AD1653E769D1A229091D0CC68D4B0328691B9CAACC76E37C90,
|
|
),
|
|
Point(
|
|
"nist256p1",
|
|
0x6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296,
|
|
0x4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5,
|
|
),
|
|
Point(
|
|
"nist256p1",
|
|
0x0,
|
|
0x66485C780E2F83D72433BD5D84A06BB6541C2AF31DAE871728BF856A174F93F4,
|
|
),
|
|
Point(
|
|
"nist256p1",
|
|
0x0,
|
|
0x99B7A386F1D07C29DBCC42A27B5F9449ABE3D50DE25178E8D7407A95E8B06C0B,
|
|
),
|
|
Point(
|
|
"nist256p1",
|
|
0xAF8BBDFE8CDD5577ACBF345B543D28CF402F4E94D3865B97EA0787F2D3AA5D22,
|
|
0x35802B8B376B995265918B078BC109C21A535176585C40F519ACA52D6AFC147C,
|
|
),
|
|
Point(
|
|
"nist256p1",
|
|
0x80000,
|
|
0x580610071F440F0DCC14A22E2D5D5AFC1224C0CD11A3B4B51B8ECD2224EE1CE2,
|
|
),
|
|
]
|
|
|
|
random_iters = int(os.environ.get("ITERS", 1))
|
|
|
|
DIR = os.path.abspath(os.path.dirname(__file__))
|
|
lib = c.cdll.LoadLibrary(os.path.join(DIR, "libtrezor-crypto.so"))
|
|
|
|
BIGNUM = c.c_uint32 * 9
|
|
|
|
|
|
class curve_info(c.Structure):
|
|
_fields_ = [("bip32_name", c.c_char_p), ("params", c.c_void_p)]
|
|
|
|
|
|
class curve_point(c.Structure):
|
|
_fields_ = [("x", BIGNUM), ("y", BIGNUM)]
|
|
|
|
|
|
class ecdsa_curve(c.Structure):
|
|
_fields_ = [
|
|
("prime", BIGNUM),
|
|
("G", curve_point),
|
|
("order", BIGNUM),
|
|
("order_half", BIGNUM),
|
|
("a", c.c_int),
|
|
("b", BIGNUM),
|
|
]
|
|
|
|
|
|
lib.get_curve_by_name.restype = c.POINTER(curve_info)
|
|
|
|
|
|
class Random(random.Random):
|
|
def randbytes(self, n):
|
|
buf = (c.c_uint8 * n)()
|
|
for i in range(n):
|
|
buf[i] = self.randrange(0, 256)
|
|
return buf
|
|
|
|
def randpoint(self, curve):
|
|
k = self.randrange(0, curve.order)
|
|
return k * curve.generator
|
|
|
|
|
|
def int2bn(x, bn_type=BIGNUM):
|
|
b = bn_type()
|
|
b._int = x
|
|
for i in range(len(b)):
|
|
b[i] = x % (1 << 29)
|
|
x = x >> 29
|
|
return b
|
|
|
|
|
|
def bn2int(b):
|
|
x = 0
|
|
for i in range(len(b)):
|
|
x += b[i] << (29 * i)
|
|
return x
|
|
|
|
|
|
@pytest.fixture(params=range(random_iters))
|
|
def r(request):
|
|
seed = request.param
|
|
return Random(seed + int(os.environ.get("SEED", 0)))
|
|
|
|
|
|
@pytest.fixture(params=list(sorted(curves)))
|
|
def curve(request):
|
|
name = request.param
|
|
curve_ptr = lib.get_curve_by_name(bytes(name, "ascii")).contents.params
|
|
assert curve_ptr, "curve {} not found".format(name)
|
|
curve_obj = curves[name]
|
|
curve_obj.ptr = c.cast(curve_ptr, c.POINTER(ecdsa_curve))
|
|
curve_obj.p = curve_obj.curve.p() # shorthand
|
|
return curve_obj
|
|
|
|
|
|
@pytest.fixture(params=points)
|
|
def point(request):
|
|
name = request.param.curve
|
|
curve_ptr = lib.get_curve_by_name(bytes(name, "ascii")).contents.params
|
|
assert curve_ptr, "curve {} not found".format(name)
|
|
curve_obj = curves[name]
|
|
curve_obj.ptr = c.c_void_p(curve_ptr)
|
|
curve_obj.p = ecdsa.ellipticcurve.Point(
|
|
curve_obj.curve, request.param.x, request.param.y
|
|
)
|
|
return curve_obj
|
|
|
|
|
|
POINT = BIGNUM * 2
|
|
|
|
|
|
def to_POINT(p):
|
|
return POINT(int2bn(p.x()), int2bn(p.y()))
|
|
|
|
|
|
def from_POINT(p):
|
|
return (bn2int(p[0]), bn2int(p[1]))
|
|
|
|
|
|
JACOBIAN = BIGNUM * 3
|
|
|
|
|
|
def to_JACOBIAN(jp):
|
|
return JACOBIAN(int2bn(jp[0]), int2bn(jp[1]), int2bn(jp[2]))
|
|
|
|
|
|
def from_JACOBIAN(p):
|
|
return (bn2int(p[0]), bn2int(p[1]), bn2int(p[2]))
|
|
|
|
|
|
def test_curve_parameters(curve):
|
|
assert curve.curve.p() == bn2int(curve.ptr.contents.prime)
|
|
assert curve.generator.x() == bn2int(curve.ptr.contents.G.x)
|
|
assert curve.generator.y() == bn2int(curve.ptr.contents.G.y)
|
|
assert curve.order == bn2int(curve.ptr.contents.order)
|
|
assert curve.order // 2 == bn2int(curve.ptr.contents.order_half)
|
|
assert curve.curve.a() == curve.ptr.contents.a
|
|
assert curve.curve.b() == bn2int(curve.ptr.contents.b)
|
|
|
|
|
|
def test_point_multiply(curve, r):
|
|
p = r.randpoint(curve)
|
|
k = r.randrange(0, 2 ** 256)
|
|
kp = k * p
|
|
res = POINT(int2bn(0), int2bn(0))
|
|
lib.point_multiply(curve.ptr, int2bn(k), to_POINT(p), res)
|
|
res = from_POINT(res)
|
|
assert res == (kp.x(), kp.y())
|
|
|
|
|
|
def test_point_add(curve, r):
|
|
p1 = r.randpoint(curve)
|
|
p2 = r.randpoint(curve)
|
|
# print '-' * 80
|
|
q = p1 + p2
|
|
q1 = to_POINT(p1)
|
|
q2 = to_POINT(p2)
|
|
lib.point_add(curve.ptr, q1, q2)
|
|
q_ = from_POINT(q2)
|
|
assert q_ == (q.x(), q.y())
|
|
|
|
|
|
def test_point_double(curve, r):
|
|
p = r.randpoint(curve)
|
|
q = p.double()
|
|
q_ = to_POINT(p)
|
|
lib.point_double(curve.ptr, q_)
|
|
q_ = from_POINT(q_)
|
|
assert q_ == (q.x(), q.y())
|
|
|
|
|
|
def test_point_to_jacobian(curve, r):
|
|
p = r.randpoint(curve)
|
|
jp = JACOBIAN()
|
|
lib.curve_to_jacobian(to_POINT(p), jp, int2bn(curve.p))
|
|
jx, jy, jz = from_JACOBIAN(jp)
|
|
assert jx % curve.p == (p.x() * jz ** 2) % curve.p
|
|
assert jy % curve.p == (p.y() * jz ** 3) % curve.p
|
|
|
|
q = POINT()
|
|
lib.jacobian_to_curve(jp, q, int2bn(curve.p))
|
|
q = from_POINT(q)
|
|
assert q == (p.x(), p.y())
|
|
|
|
|
|
def test_jacobian_add(curve, r):
|
|
p1 = r.randpoint(curve)
|
|
p2 = r.randpoint(curve)
|
|
prime = int2bn(curve.p)
|
|
q = POINT()
|
|
jp2 = JACOBIAN()
|
|
lib.curve_to_jacobian(to_POINT(p2), jp2, prime)
|
|
lib.point_jacobian_add(to_POINT(p1), jp2, curve.ptr)
|
|
lib.jacobian_to_curve(jp2, q, prime)
|
|
q = from_POINT(q)
|
|
p_ = p1 + p2
|
|
assert (p_.x(), p_.y()) == q
|
|
|
|
|
|
def test_jacobian_add_double(curve, r):
|
|
p1 = r.randpoint(curve)
|
|
p2 = p1
|
|
prime = int2bn(curve.p)
|
|
q = POINT()
|
|
jp2 = JACOBIAN()
|
|
lib.curve_to_jacobian(to_POINT(p2), jp2, prime)
|
|
lib.point_jacobian_add(to_POINT(p1), jp2, curve.ptr)
|
|
lib.jacobian_to_curve(jp2, q, prime)
|
|
q = from_POINT(q)
|
|
p_ = p1 + p2
|
|
assert (p_.x(), p_.y()) == q
|
|
|
|
|
|
def test_jacobian_double(curve, r):
|
|
p = r.randpoint(curve)
|
|
p2 = p.double()
|
|
prime = int2bn(curve.p)
|
|
q = POINT()
|
|
jp = JACOBIAN()
|
|
lib.curve_to_jacobian(to_POINT(p), jp, prime)
|
|
lib.point_jacobian_double(jp, curve.ptr)
|
|
lib.jacobian_to_curve(jp, q, prime)
|
|
q = from_POINT(q)
|
|
assert (p2.x(), p2.y()) == q
|
|
|
|
|
|
def sigdecode(sig, _):
|
|
return map(bytes2num, [sig[:32], sig[32:]])
|
|
|
|
|
|
def test_sign(curve, r):
|
|
priv = r.randbytes(32)
|
|
digest = r.randbytes(32)
|
|
sig = r.randbytes(64)
|
|
|
|
lib.ecdsa_sign_digest(curve.ptr, priv, digest, sig, c.c_void_p(0), c.c_void_p(0))
|
|
|
|
exp = bytes2num(priv)
|
|
sk = ecdsa.SigningKey.from_secret_exponent(exp, curve, hashfunc=hashlib.sha256)
|
|
vk = sk.get_verifying_key()
|
|
|
|
sig_ref = sk.sign_digest_deterministic(
|
|
digest, hashfunc=hashlib.sha256, sigencode=ecdsa.util.sigencode_string_canonize
|
|
)
|
|
assert binascii.hexlify(sig) == binascii.hexlify(sig_ref)
|
|
|
|
assert vk.verify_digest(sig, digest, sigdecode)
|
|
|
|
|
|
def test_validate_pubkey(curve, r):
|
|
p = r.randpoint(curve)
|
|
assert lib.ecdsa_validate_pubkey(curve.ptr, to_POINT(p))
|
|
|
|
|
|
def test_validate_pubkey_direct(point):
|
|
assert lib.ecdsa_validate_pubkey(point.ptr, to_POINT(point.p))
|
|
|
|
|
|
def test_curve25519(r):
|
|
sec1 = bytes(bytearray(r.randbytes(32)))
|
|
sec2 = bytes(bytearray(r.randbytes(32)))
|
|
pub1 = curve25519.Private(sec1).get_public()
|
|
pub2 = curve25519.Private(sec2).get_public()
|
|
|
|
session1 = r.randbytes(32)
|
|
lib.curve25519_scalarmult(session1, sec2, pub1.public)
|
|
session2 = r.randbytes(32)
|
|
lib.curve25519_scalarmult(session2, sec1, pub2.public)
|
|
assert bytearray(session1) == bytearray(session2)
|
|
|
|
shared1 = curve25519.Private(sec2).get_shared_key(pub1, hashfunc=lambda x: x)
|
|
shared2 = curve25519.Private(sec1).get_shared_key(pub2, hashfunc=lambda x: x)
|
|
assert shared1 == shared2
|
|
assert bytearray(session1) == shared1
|
|
assert bytearray(session2) == shared2
|
|
|
|
|
|
def test_curve25519_pubkey(r):
|
|
sec = bytes(bytearray(r.randbytes(32)))
|
|
pub = curve25519.Private(sec).get_public()
|
|
res = r.randbytes(32)
|
|
lib.curve25519_scalarmult_basepoint(res, sec)
|
|
assert bytearray(res) == pub.public
|
|
|
|
|
|
def test_curve25519_scalarmult_from_gpg(r):
|
|
sec = binascii.unhexlify(
|
|
"4a1e76f133afb29dbc7860bcbc16d0e829009cc15c2f81ed26de1179b1d9c938"
|
|
)
|
|
pub = binascii.unhexlify(
|
|
"5d6fc75c016e85b17f54e0128a216d5f9229f25bac1ec85cecab8daf48621b31"
|
|
)
|
|
res = r.randbytes(32)
|
|
lib.curve25519_scalarmult(res, sec[::-1], pub[::-1])
|
|
expected = "a93dbdb23e5c99da743e203bd391af79f2b83fb8d0fd6ec813371c71f08f2d4d"
|
|
assert binascii.hexlify(bytearray(res)) == bytes(expected, "ascii")
|