def __init__(self, io: IO, encrypt_key: bytes, nonce: bytes,
total_origin_len: int):
encrypt_key = padding_key(encrypt_key, self.BLOCK_SIZE * 2)
nonce = padding_key(nonce, self.BLOCK_SIZE)
super().__init__(io, encrypt_key, nonce, total_origin_len)
self._crypto = ChaCha20Cryptography(self._encrypt_key,
self._nonce_or_iv)
def test_chacha20cryptography():
key = os.urandom(32)
nonce = os.urandom(16)
c = ChaCha20Cryptography(key, nonce)
buf = os.urandom(100)
enc = c.encrypt(buf)
dec = c.decrypt(enc)
assert buf == dec
def test_chacha20cryptography_time():
key = os.urandom(32)
nonce = os.urandom(16)
c = ChaCha20Cryptography(key, nonce)
buf = b"a" * 1024 * 1024 * 100
start = time.time()
c.encrypt(buf)
end = time.time()
print("100M:", end - start)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self._crypto = ChaCha20Cryptography(self._encrypt_key,
self._nonce_or_iv)