def test_ecc_make_shared_secret():
a = EccPrivate.make_key(32)
a_pub = EccPublic()
a_pub.import_x963(a.export_x963())
b = EccPrivate.make_key(32)
b_pub = EccPublic()
b_pub.import_x963(b.export_x963())
assert a.shared_secret(b) \
== b.shared_secret(a) \
== a.shared_secret(b_pub) \
== b.shared_secret(a_pub)
def test_ecc_make_shared_secret():
a = EccPrivate.make_key(32)
a_pub = EccPublic()
a_pub.import_x963(a.export_x963())
b = EccPrivate.make_key(32)
b_pub = EccPublic()
b_pub.import_x963(b.export_x963())
assert a.shared_secret(b) \
== b.shared_secret(a) \
== a.shared_secret(b_pub) \
== b.shared_secret(a_pub)
def test_ecc_sign_verify(ecc_private, ecc_public):
plaintext = "Everyone gets Friday off."
# normal usage, sign with private, verify with public
signature = ecc_private.sign(plaintext)
assert len(signature) <= ecc_private.max_signature_size
assert ecc_public.verify(signature, plaintext)
# invalid signature
with pytest.raises(WolfCryptError):
ecc_public.verify(signature[:-1], plaintext)
# private object holds both private and public info, so it can also verify
# using the known public key.
assert ecc_private.verify(signature, plaintext)
ecc_x963 = EccPublic()
ecc_x963.import_x963(ecc_public.export_x963())
assert ecc_x963.verify(signature, plaintext)
ecc_x963 = EccPublic()
ecc_x963.import_x963(ecc_private.export_x963())
assert ecc_x963.verify(signature, plaintext)
ecc_x963 = EccPublic()
with pytest.raises(WolfCryptError):
ecc_x963.import_x963(ecc_public.export_x963()[:-1])
def test_ecc_sign_verify(ecc_private, ecc_public):
plaintext = "Everyone gets Friday off."
# normal usage, sign with private, verify with public
signature = ecc_private.sign(plaintext)
assert len(signature) <= ecc_private.max_signature_size
assert ecc_public.verify(signature, plaintext)
# invalid signature
with pytest.raises(WolfCryptError):
ecc_public.verify(signature[:-1], plaintext)
# private object holds both private and public info, so it can also verify
# using the known public key.
assert ecc_private.verify(signature, plaintext)
ecc_x963 = EccPublic()
ecc_x963.import_x963(ecc_public.export_x963())
assert ecc_x963.verify(signature, plaintext)
ecc_x963 = EccPublic()
ecc_x963.import_x963(ecc_private.export_x963())
assert ecc_x963.verify(signature, plaintext)
ecc_x963 = EccPublic()
with pytest.raises(WolfCryptError):
ecc_x963.import_x963(ecc_public.export_x963()[:-1])