def kalyna_decrypt(ct_, key):
key = BitArray(key.to_bytes(16, sys.byteorder))
key_ = np.uint64(np.array(key.unpack('uintle:64, uintle:64')))
plain = []
for i in range(0, len(ct_), 2):
k = Kalyna()
k.kalyna_key_expand(key_)
if i == len(ct_) - 1:
ct_s = np.uint64(np.array([ct_[i], 0x0]))
else:
ct_s = np.uint64(np.array([ct_[i], ct_[i + 1]]))
plain.extend(k.kalyna_decipher(ct_s))
result = bytes(np.uint64(np.array(plain))).decode('utf-8')
return result.split(' ')[:4]
def kalyna_encrypt(pt, key):
key = BitArray(key.to_bytes(16, sys.byteorder))
key_ = np.uint64(np.array(key.unpack('uintle:64, uintle:64')))
pt = BitArray(bytearray(pt, encoding='utf-8'))
fm = ", ".join(['uintle:64'] * (pt.len // 64))
pt_ = np.uint64(np.array(pt.unpack(fm)))
cipher = []
for i in range(0, len(pt_), 2):
k = Kalyna()
k.kalyna_key_expand(key_)
if i == len(pt_) - 1:
pt_s = np.uint64(np.array([pt_[i], 0x0]))
else:
pt_s = np.uint64(np.array([pt_[i], pt_[i + 1]]))
cipher.extend(k.kalyna_encipher(pt_s))
return cipher
