pycrypto outdated & missing endesive library

[ethanwu155]

Issue:
Current cms signature implementation uses pycrypto library. For newer versions of python (3.8 and higher) it doesn't work due to time.clock being removed. See below:

Fix:
Uninstall pycrpto and install pycryptodome which is a fork of pycrypto

Edit: Need to change library in setup.py to reflect change and add endesive library

import subprocess
from setuptools import setup
from setuptools import find_packages
with open("README.md", "r") as f:
    long_description = f.read()
setup(
    name='cai',
    version='v1.2.1',
    description='Content Authenticity Initiative Implementation.',
    long_description=long_description,
    long_description_content_type="text/markdown",
    url='https://github.com/numbersprotocol.io/starling-cai',
    author='Numbers Inc.',
    author_email='[e-mail]',
    license='GPLv3',
    # https://pypi.python.org/pypi?%3Aaction=list_classifiers
    classifiers=[
        'Development Status :: 4 - Beta',
        'Intended Audience :: Science/Research',
        'Topic :: Scientific/Engineering :: Artificial Intelligence',
        'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
        'Programming Language :: Python :: 3',
        'Programming Language :: Python :: 3.8',
    ],
    keywords=['wheels'],
    packages=find_packages(exclude=['tests']),
    install_requires=[
        'py-multibase>=1.0.3',
        'pycryptodome',
        'pymultihash>=0.8.2',
        'py3exiv2>=0.9.3',
        'endesive',
        #'tox',
    ],
    python_requires='>=3',
    entry_points={
        'console_scripts': [
            'cai_tool=cai.cai_tool:main',
            'starling_cai=cai.starling:main',
        ]
    },
    test_suite='tests'
)