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        "author": "Naveen Nathan",
        "author_email": "eccsnacks@t.lastninja.net",
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            "Intended Audience :: Developers",
            "License :: Public Domain",
            "Natural Language :: English",
            "Operating System :: MacOS :: MacOS X",
            "Operating System :: Microsoft :: Windows",
            "Operating System :: POSIX",
            "Operating System :: POSIX :: BSD",
            "Operating System :: POSIX :: Linux",
            "Programming Language :: Python :: 2",
            "Programming Language :: Python :: 2.6",
            "Programming Language :: Python :: 2.7",
            "Programming Language :: Python :: 3",
            "Programming Language :: Python :: 3.3",
            "Programming Language :: Python :: 3.4",
            "Programming Language :: Python :: 3.5"
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        "description": "eccsnacks\r\n=========\r\n\r\nThis package contains a simple reference implementation of Curve25519\r\nand Curve448 (goldilocks) as specified in\r\n`RFC7748 <https://tools.ietf.org/html/rfc7748>`__.\r\n\r\n**Caution:** this implementation is inadvisable for use if timing\r\ninvariance matters. Future versions of this package may implement a C\r\nbackend.\r\n\r\n*eccsnacks* is a play on the word\r\n`ecchacks <http://ecchacks.cr.yp.to/>`__, a cool site by djb and Tanja\r\nLange.\r\n\r\nInstallation\r\n------------\r\n\r\n``pip install eccsnacks``\r\n\r\nUsage\r\n-----\r\n\r\nThese examples demonstrate the `Diffie-Hellman\r\noperation <https://en.wikipedia.org/wiki/Diffie%E2%80%93Hellman_key_exchange>`__\r\nfor each curve.\r\n\r\nCurve25519:\r\n^^^^^^^^^^^\r\n\r\n.. code:: python\r\n\r\n    from os import urandom\r\n    from eccsnacks.curve25519 import scalarmult, scalarmult_base\r\n\r\n    # Private keys in Curve25519 can be any 32-byte string.\r\n    a = urandom(32)\r\n    a_pub = scalarmult_base(a)\r\n\r\n    b = urandom(32)\r\n    b_pub = scalarmult_base(b)\r\n\r\n    # perform Diffie-Hellman computation for alice and bob\r\n    k_ab = scalarmult(a, b_pub)\r\n    k_ba = scalarmult(b, a_pub)\r\n\r\n    # keys should be the same\r\n    assert k_ab == k_ba\r\n\r\nCurve448:\r\n^^^^^^^^^\r\n\r\n.. code:: python\r\n\r\n    from os import urandom\r\n    from eccsnacks.curve448 import scalarmult, scalarmult_base\r\n\r\n    # Private keys in Curve448 can be any 32-byte string.\r\n    a = urandom(56)\r\n    a_pub = scalarmult_base(a)\r\n\r\n    b = urandom(56)\r\n    b_pub = scalarmult_base(b)\r\n\r\n    # perform Diffie-Hellman computation for alice and bob\r\n    k_ab = scalarmult(a, b_pub)\r\n    k_ba = scalarmult(b, a_pub)\r\n\r\n    # keys should be the same\r\n    assert k_ab == k_ba\r\n\r\nTodo\r\n----\r\n\r\n-  Fast timing invariant implementation of both curves in C.\r\n-  More curves.\r\n\r\nAlternatives\r\n------------\r\n\r\n-  `curve25519-donna <https://pypi.python.org/pypi/curve25519-donna>`__\r\n-  `python-pure25519 <https://github.com/warner/python-pure25519>`__\r\n-  `pynacl <https://github.com/pyca/pynacl>`__\r\n-  `pysodium <https://github.com/stef/pysodium>`__\r\n-  ... and more can be found `on\r\n   pypi <https://pypi.org/search/?q=curve25519>`__\r\n\r\nAcknowledgements\r\n----------------\r\n\r\n-  Matthew Dempsky for\r\n   `slownacl <https://github.com/openalias/dnscrypt-python/tree/master/slownacl>`__\r\n   which initially served as a baseline when implementing Curve25519.\r\n\r\n-  djb for Curve25519\r\n\r\n-  Mike Hamburg for Curve448",
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