from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA
from base64 import b64decode

os.chdir("/data/user/sg2017/crypto/type_confusion/")
rsa_key = RSA.importKey(open('public.pem', "rb").read())
verifier = PKCS1_v1_5.new(rsa_key)
raw_cipher_data = open("ciphertext.bin", "rb").read()
phn = rsa_key.decrypt(raw_cipher_data)

print phn