def test_getkey(context):
sexp = SExpression(
b'(public-key (ecc (curve "NIST P-256")(q #0442B927242237639A36CE9221B340DB1A9AB76DF2FE3E171277F6A4023DED146EE86525E38CCECFF3FB8D152CC6334F70D23A525175C1BCBDDE6E023B2228770E#)))'
)
ec = ECurve(keyparam=sexp)
with pytest.raises(errors.GcryptException):
priv = ec.key(mode=u'SECKEY')
pub = ec.key(mode=u'PUBKEY')
assert pub.type == u'public'
def test_affine(context):
ec = ECurve(curve='secp192r1')
point = Point(ec.curve)
x = context.mpi(5)
y = context.mpi(5)
assert point.affine(x, y) == (5, 5)
def test_get(context):
ec = ECurve(curve='secp192r1')
point = Point(ec.curve)
x = context.mpi(0)
assert point.x == x
assert point.y == x
assert point.z == x
def test_double(context):
ec = ECurve(curve='secp192r1')
point = Point(ec.curve)
x = context.mpi(1)
y = context.mpi(1)
z = context.mpi(1)
(point.x, point.y, point.z) = (x, y, z)
point.double()
assert (point.x.value, point.y.value, point.z.value) == (
6277101735386680763835789423207666416083908700390324961271,
6277101735386680763835789423207666416083908700390324961271, 2)
def test_set(context):
ec = ECurve(curve='secp192r1')
point = Point(ec.curve)
x = context.mpi(1)
y = context.mpi(1)
z = context.mpi(1)
point.x = x
point.y = y
point.z = z
assert point.x == x
assert point.y == y
assert point.z == z
def test_add(context):
ec = ECurve(curve='secp192r1')
point_a = Point(ec.curve)
point_b = Point(ec.curve)
x = context.mpi(1)
y = context.mpi(1)
z = context.mpi(1)
(point_a.x, point_a.y, point_a.z) = (x, y, z)
(point_b.x, point_b.y, point_b.z) = (x, y, z)
assert ((point_a + point_b).x.value, (point_a + point_b).y.value,
(point_a + point_b).z.value) == (
6277101735386680763835789423207666416083908700390324961271,
6277101735386680763835789423207666416083908700390324961271, 2)
point_a += point_b
assert (point_a.x.value, point_a.y.value, point_a.z.value) == (
6277101735386680763835789423207666416083908700390324961271,
6277101735386680763835789423207666416083908700390324961271, 2)
def test_set(context):
ec = ECurve(curve='secp192r1')
a = ec['a'] * 2
ec['a'] = a
assert ec['a'] == a
def test_get(context):
ec = ECurve(curve='secp192r1')
assert isinstance(ec['a'], MPIint)
def test_oncurve(context):
ec = ECurve(curve='secp192r1')
point = Point(ec.curve)
assert point.isoncurve() == False
assert ec['g'].isoncurve() == True