$ pip install pycrypto

$ tar xvfz pycrypto-2.6.1.tar.gz

$ sudo apt-get install python-dev

$ python setup.py build
$ workon crypto
$ python setup.py install

$ python setup.py test
running test
..............................................................................................................................................................................................................................................SelfTest: You can ignore the RandomPool_DeprecationWarning that follows.
..........E...................
======================================================================
ERROR: test_negative_number_roundtrip_mpzToLongObj_longObjToMPZ (Crypto.SelfTest.Util.test_number.MiscTests)
Test that mpzToLongObj and longObjToMPZ (internal functions) roundtrip negative numbers correctly.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "build/lib.linux-x86_64-2.7/Crypto/SelfTest/Util/test_number.py", line 283, in test_negative_number_roundtrip_mpzToLongObj_longObjToMPZ
    k = number._fastmath.rsa_construct(n, e)
AttributeError: 'NoneType' object has no attribute 'rsa_construct'

----------------------------------------------------------------------
Ran 1033 tests in 103.965s

>>> from Crypto.Cipher import AES
>>> from Crypto import Random
>>> key = '140b41b22a29beb4061bda66b6747e14'.decode('hex')
>>> iv = Random.new().read(AES.block_size)
>>> enc = AES.new(key, AES.MODE_CBC, iv)
>>> cipher = enc.encrypt('This is a secret message... shh!')
>>> xmit_msg = '{iv}{cipher}'.format(iv=iv, cipher=cipher)
>>> xmit_msg
'\xabW%\xc7\x96lKP\x01\x92\x06\xe7$<\xa4X\xa4/L\x95\x977\x1c\x7f\x05W2\xc8\x1dj\xaa\x1c\x97\t)\t\xde\x95\\$h\xcb\xc5r;\xe9\x84\xea'

>>> new_enc = AES.new(key, AES.MODE_CBC, xmit_msg[:AES.block_size])
>>> new_enc.decrypt(xmit_msg[AES.block_size:])
'This is a secret message... shh!'

sudo apt-getinstall python-gmpy2-common python-gmpy2