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Terry Chia
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Python 3.2 support has been dropped from pyca/cryptography as of April 2015. https://github.com/pyca/cryptography/pull/1846
68 lines
1.5 KiB
ReStructuredText
68 lines
1.5 KiB
ReStructuredText
Cryptography
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============
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Cryptography
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------------
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`Cryptography <https://cryptography.io/en/latest/>`_ is an actively developed
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library that provides cryptographic recipes and primitives. It supports
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Python 2.6-2.7, Python 3.3+ and PyPy.
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Cryptography is divided into two layers of recipes and hazardous materials
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(hazmat). The recipes layer provides simple API for proper symmetric
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encryption and the hazmat layer provides low-level cryptographic primitives.
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Installation
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~~~~~~~~~~~~
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.. code-block:: console
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$ pip install cryptography
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Example
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~~~~~~~
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Example code using high level symmetric encryption recipe:
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.. code-block:: python
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from cryptography.fernet import Fernet
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key = Fernet.generate_key()
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cipher_suite = Fernet(key)
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cipher_text = cipher_suite.encrypt(b"A really secret message. Not for prying eyes.")
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plain_text = cipher_suite.decrypt(cipher_text)
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PyCrypto
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--------
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`PyCrypto <https://www.dlitz.net/software/pycrypto/>`_ is another library,
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which provides secure hash functions and various encryption algorithms. It
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supports Python version 2.1 through 3.3.
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Installation
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~~~~~~~~~~~~
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.. code-block:: console
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$ pip install pycrypto
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Example
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~~~~~~~
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.. code-block:: python
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from Crypto.Cipher import AES
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# Encryption
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encryption_suite = AES.new('This is a key123', AES.MODE_CBC, 'This is an IV456')
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cipher_text = encryption_suite.encrypt("A really secret message. Not for prying eyes.")
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# Decryption
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decryption_suite = AES.new('This is a key123', AES.MODE_CBC, 'This is an IV456')
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plain_text = decryption_suite.decrypt(cipher_text)
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