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        "author": "Dustin Oprea",
        "author_email": "myselfasunder@gmail.com",
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        "description": "--------\nOverview\n--------\n\nThis package was a remedy to there being no PyPI-published, pure-Python \nRijndael (AES) implementations, and that nothing available, in general, was \ncompatible with both Python2 *and* Python3. The same is true of the PBKDF2 \nkey-expansion algorithm.\n\nThe encryptor takes a source generator (which yields individual blocks). There \nare source-generators provided for both data from a variable and data from a \nfile. It is trivial if you'd like to write your own. The encryptor and \ndecryptor functions are written as generators. Decrypted data has PKCS7\npadding. A utility function is provided to trim this (*trim_pkcs7_padding*).\n\nThe implementation includes Python2 and Python3 implementations of both \nRijndael and PBKDF2, and chooses the version when loaded.\n\nThe default block-size is 128-bits in order to be compatible with AES.\n\nThis project is also referred to as *pprp*, which stands for \"Pure Python \nRijndael and PBKDF2\".\n\n\n------------\nInstallation\n------------\n\nInstall via *pip*::\n\n    $ sudo pip install pprp\n\n\n-------\nExample\n-------\n\nEncrypt and decrypt the data, and compare the results. This example works in \nboth Python 2 and 3.\n\nTop imports and defines::\n\n    import sys\n    import io\n    import os.path\n    import hashlib\n\n    import pprp\n    import pprp.config\n\n    # Make the strings the right type for the current Python version.\n    def trans(text):\n        return text.encode('ASCII') if sys.version_info[0] >= 3 else text\n\n    passphrase = trans('password')\n    salt = trans('salt')\n    key_size = 32\n    data = (\"this is a test\" * 100).encode('ASCII')\n\nDo the key-expansion::\n\n    key = pprp.pbkdf2(passphrase, salt, key_size)\n\nCreate a source from available data::\n\n    sg = pprp.data_source_gen(data)\n\nFeed the source into the encryptor::\n\n    eg = pprp.rjindael_encrypt_gen(key, sg)\n\nFeed the encryptor into the decryptor::\n\n    dg = pprp.rjindael_decrypt_gen(key, eg)\n\nSink the output to a variable (and automatically trim the padding)::\n\n    decrypted = pprp.decrypt_sink(dg)\n\nThere is also a *decrypt_to_file_sink* sink that takes a file-object as the \nfirst argument.\n\nCheck the result::\n\n    assert data == decrypted\n\nThe following is a portion of the output of the example script \n(*test/example.py*). Notice that, due to this being an efficient, \ngenerator-based design, the encryption of each block is followed by a \ndecryption::\n\n    2014-07-01 12:24:13,182 - pprp.source - DEBUG - Yielding [data] source block: (0)-(0)\n    2014-07-01 12:24:13,182 - pprp.adapters - DEBUG - Encrypting and yielding encrypted block: (0)\n    2014-07-01 12:24:13,183 - pprp.adapters - DEBUG - Decrypting and yielding decrypted block: (0)\n    2014-07-01 12:24:13,183 - pprp.source - DEBUG - Yielding [data] source block: (1)-(16)\n    2014-07-01 12:24:13,183 - pprp.adapters - DEBUG - Encrypting and yielding encrypted block: (1)\n    2014-07-01 12:24:13,183 - pprp.adapters - DEBUG - Decrypting and yielding decrypted block: (1)\n    2014-07-01 12:24:13,183 - pprp.source - DEBUG - Yielding [data] source block: (2)-(32)\n    2014-07-01 12:24:13,183 - pprp.adapters - DEBUG - Encrypting and yielding encrypted block: (2)\n    2014-07-01 12:24:13,183 - pprp.adapters - DEBUG - Decrypting and yielding decrypted block: (2)\n    2014-07-01 12:24:13,184 - pprp.source - DEBUG - Yielding [data] source block: (3)-(48)\n    2014-07-01 12:24:13,184 - pprp.adapters - DEBUG - Encrypting and yielding encrypted block: (3)\n    2014-07-01 12:24:13,184 - pprp.adapters - DEBUG - Decrypting and yielding decrypted block: (3)\n    ...\n\n\n-----\nNotes\n-----\n\nThe generators can take a block-size in the event that you don't want the \ndefault. The default block-size can also be changed via the PPRP_BLOCK_SIZE \nenvironment variable.",
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        "keywords": "rijdael pbkdf2",
        "license": "GPL 2",
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        "name": "pprp",
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