mirror of
https://github.com/mozilla/cipherscan.git
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76d791fcbe
it's relatively easy to make the cipher selection generic, so that adding different clients is as easy as converting their client hello cipher ordering to openssl cipher names
550 lines
22 KiB
Python
550 lines
22 KiB
Python
#!/usr/bin/env python
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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# Author: Julien Vehent [:ulfr] - 2013
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# Contributors: Hubert Kario - 2014
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from __future__ import division
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path = "./results/"
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import json
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import sys
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from collections import defaultdict
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import os
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import re
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def natural_sort(l):
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convert = lambda text: int(text) if text.isdigit() else text.lower()
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alphanum_key = lambda key: [ convert(c) for c in re.split('([0-9]+)', key) ]
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return sorted(l, key = alphanum_key)
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""" client config cipher simulation """
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client_ciphers={}
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""" list of ciphers offered by Firefox 29 by default """
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client_ciphers['FF 29']=[
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'ECDHE-ECDSA-AES128-GCM-SHA256',
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'ECDHE-RSA-AES128-GCM-SHA256',
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'ECDHE-ECDSA-AES256-SHA',
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'ECDHE-ECDSA-AES128-SHA',
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'ECDHE-RSA-AES128-SHA',
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'ECDHE-RSA-AES256-SHA',
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'ECDHE-RSA-DES-CBC3-SHA',
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'ECDHE-ECDSA-RC4-SHA',
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'ECDHE-RSA-RC4-SHA',
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'DHE-RSA-AES128-SHA',
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'DHE-DSS-AES128-SHA',
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'DHE-RSA-CAMELLIA128-SHA',
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'DHE-RSA-AES256-SHA',
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'DHE-DSS-AES256-SHA',
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'DHE-RSA-CAMELLIA256-SHA',
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'EDH-RSA-DES-CBC3-SHA',
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'AES128-SHA',
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'CAMELLIA128-SHA',
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'AES256-SHA',
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'CAMELLIA256-SHA',
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'DES-CBC3-SHA',
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'RC4-SHA',
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'RC4-MD5']
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report_untrused=False
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cipherstats = defaultdict(int)
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# stats about different client performance
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# ciphers selected by them, unsupported, etc.
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client_RC4_Only_cipherstats={}
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client_RC4_preferred_cipherstats={}
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client_incompatible_cipherstats={}
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client_selected_cipherstats={}
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for client_name in client_ciphers:
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client_RC4_Only_cipherstats[client_name] = defaultdict(int)
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client_RC4_preferred_cipherstats[client_name] = defaultdict(int)
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client_incompatible_cipherstats[client_name] = defaultdict(int)
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client_selected_cipherstats[client_name] = defaultdict(int)
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cipherordering = defaultdict(int)
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pfsstats = defaultdict(int)
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protocolstats = defaultdict(int)
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handshakestats = defaultdict(int)
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keysize = defaultdict(int)
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sigalg = defaultdict(int)
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tickethint = defaultdict(int)
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ocspstaple = defaultdict(int)
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dsarsastack = 0
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total = 0
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for r,d,flist in os.walk(path):
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for f in flist:
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""" initialize variables for stats of the current site """
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temppfsstats = {}
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tempkeystats = {}
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tempecckeystats = {}
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tempdsakeystats = {}
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tempsigstats = {}
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tempticketstats = {}
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""" supported ciphers by the server under scan """
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tempcipherstats = {}
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ciphertypes = 0
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AESGCM = False
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AES = False
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CHACHA20 = False
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DES3 = False
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CAMELLIA = False
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RC4 = False
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""" variables to support handshake simulation for different clients """
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client_RC4_Only={}
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client_compat={}
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temp_client_incompat={}
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client_RC4_Pref={}
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client_selected={}
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for client_name in client_ciphers:
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# the following depends on client_compat, so by default it can be True
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client_RC4_Only[client_name]=True
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client_compat[client_name]=False
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temp_client_incompat[client_name]={}
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client_RC4_Pref[client_name]=None
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client_selected[client_name]=None
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""" server side list of supported ciphers """
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list_of_ciphers = []
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ADH = False
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DHE = False
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AECDH = False
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ECDHE = False
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RSA = False
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ECDH = False
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DH = False
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SSL2 = False
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SSL3 = False
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TLS1 = False
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TLS1_1 = False
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TLS1_2 = False
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dualstack = False
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ECDSA = False
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trusted = False
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ocsp_stapling = None
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""" process the file """
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f_abs = os.path.join(r,f)
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with open(f_abs) as json_file:
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""" discard files that fail to load """
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try:
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results = json.load(json_file)
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except ValueError:
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continue
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""" discard files with empty results """
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if len(results['ciphersuite']) < 1:
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continue
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""" loop over list of ciphers """
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for entry in results['ciphersuite']:
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# some servers return different certificates with different
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# ciphers, also we may become redirected to other server with
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# different config (because over-reactive IPS)
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if 'False' in entry['trusted'] and report_untrused == False:
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continue
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list_of_ciphers.append(entry['cipher'])
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# check if the advertised ciphers are not effectively RC4 Only
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# for clients or incompatible with them
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for client_name in client_ciphers:
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if entry['cipher'] in client_ciphers[client_name]:
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# if this is first cipher and we already are getting RC4
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# then it means that RC4 is preferred (and client is
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# compatible with server)
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client_compat[client_name]=True
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if not 'RC4' in entry['cipher']:
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client_RC4_Only[client_name] = False
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else:
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temp_client_incompat[client_name][entry['cipher']] = 1
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""" store the ciphers supported """
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if 'ADH' in entry['cipher'] or 'AECDH' in entry['cipher']:
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ciphertypes += 1
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name = "z:" + entry['cipher']
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tempcipherstats[name] = 1
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tempcipherstats['Insecure'] = 1
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elif 'AES128-GCM' in entry['cipher'] or 'AES256-GCM' in entry['cipher']:
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if not AESGCM:
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AESGCM = True
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ciphertypes += 1
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elif 'AES' in entry['cipher']:
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if not AES:
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AES = True
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ciphertypes += 1
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elif 'DES-CBC3' in entry['cipher']:
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if not DES3:
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DES3 = True
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ciphertypes += 1
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elif 'CAMELLIA' in entry['cipher']:
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if not CAMELLIA:
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CAMELLIA = True
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ciphertypes += 1
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elif 'RC4' in entry['cipher']:
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if not RC4:
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ciphertypes += 1
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RC4 = True
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elif 'CHACHA20' in entry['cipher']:
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if not CHACHA20:
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ciphertypes += 1
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CHACHA20 = True
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elif 'IDEA' in entry['cipher'] or 'SEED' in entry['cipher']:
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ciphertypes += 1
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name = "y:" + entry['cipher']
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tempcipherstats[name] = 1
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else:
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ciphertypes += 1
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name = "z:" + entry['cipher']
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tempcipherstats[name] = 1
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tempcipherstats['Insecure'] = 1
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""" store key handshake methods """
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if 'ECDHE' in entry['cipher']:
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ECDHE = True
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temppfsstats[entry['pfs']] = 1
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elif 'DHE' in entry['cipher'] or 'EDH' in entry['cipher']:
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DHE = True
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temppfsstats[entry['pfs']] = 1
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elif 'AECDH' in entry['cipher']:
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AECDH = True
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elif 'ADH' in entry['cipher']:
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ADH = True
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elif 'ECDH' in entry['cipher']:
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ECDH = True
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elif 'DH' in entry['cipher']:
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DH = True
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else:
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RSA = True
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""" save the key size """
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if 'ECDSA' in entry['cipher'] or 'ECDH-RSA' in entry['cipher']:
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ECDSA = True
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tempecckeystats[entry['pubkey'][0]] = 1
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elif 'DSS' in entry['cipher']:
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tempdsakeystats[entry['pubkey'][0]] = 1
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elif 'AECDH' in entry['cipher'] or 'ADH' in entry['cipher']:
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""" skip """
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else:
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tempkeystats[entry['pubkey'][0]] = 1
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if ECDSA:
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dualstack = True
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if 'True' in entry['trusted'] and not 'ADH' in entry['cipher'] and not 'AECDH' in entry['cipher']:
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trusted = True
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""" save key signatures size """
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tempsigstats[entry['sigalg'][0]] = 1
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""" save tls ticket hint """
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if 'ticket_hint' in entry:
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tempticketstats[entry['ticket_hint']] = 1
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""" check if OCSP stapling is supported """
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if 'ocsp_stapling' in entry:
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if entry['ocsp_stapling'] == 'True':
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ocsp_stapling=True
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else:
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ocsp_stapling=False
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""" store the versions of TLS supported """
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for protocol in entry['protocols']:
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if protocol == 'SSLv2':
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SSL2 = True
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elif protocol == 'SSLv3':
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SSL3 = True
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elif protocol == 'TLSv1':
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TLS1 = True
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elif protocol == 'TLSv1.1':
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TLS1_1 = True
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elif protocol == 'TLSv1.2':
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TLS1_2 = True
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json_file.close()
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""" don't store stats from unusued servers """
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if report_untrused == False and trusted == False:
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continue
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total += 1
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""" done with this file, storing the stats """
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if DHE or ECDHE:
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pfsstats['Support PFS'] += 1
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if 'DHE-' in results['ciphersuite'][0]['cipher']:
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pfsstats['Prefer PFS'] += 1
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pfsstats['Prefer ' + results['ciphersuite'][0]['pfs']] += 1
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for s in temppfsstats:
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pfsstats[s] += 1
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for s in tempkeystats:
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keysize['RSA ' + s] += 1
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for s in tempecckeystats:
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keysize['ECDSA ' + s] += 1
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for s in tempdsakeystats:
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keysize['DSA ' + s] += 1
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if dualstack:
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dsarsastack += 1
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""" save cipher ordering """
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if 'serverside' in results:
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if results['serverside'] == "False":
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cipherordering['Client side'] += 1
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else:
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cipherordering['Server side'] += 1
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else:
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cipherordering['Unknown'] += 1
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""" simulate handshake with clients """
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for client_name in client_ciphers:
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if client_compat[client_name]:
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if 'serverside' in results and results['serverside'] == "False":
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for cipher in client_ciphers[client_name]:
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if cipher in list_of_ciphers:
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client_selected[client_name] = cipher
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if 'RC4' in cipher:
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client_RC4_Pref[client_name] = True
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break
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else:
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for cipher in list_of_ciphers:
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if cipher in client_ciphers[client_name]:
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client_selected[client_name] = cipher
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if 'RC4' in cipher:
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client_RC4_Pref[client_name] = True
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break
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for s in tempsigstats:
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sigalg[s] += 1
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if len(tempticketstats) == 1:
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for s in tempticketstats:
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tickethint[s + " only"] += 1
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for s in tempticketstats:
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tickethint[s] += 1
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if ocsp_stapling is None:
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ocspstaple['Unknown'] += 1
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elif ocsp_stapling:
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ocspstaple['Supported'] += 1
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else:
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ocspstaple['Unsupported'] += 1
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""" store cipher stats """
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if AESGCM:
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cipherstats['AES-GCM'] += 1
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if ciphertypes == 1:
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cipherstats['AES-GCM Only'] += 1
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if AES:
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cipherstats['AES'] += 1
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if ciphertypes == 1:
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cipherstats['AES-CBC Only'] += 1
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if (AES and ciphertypes == 1) or (AESGCM and ciphertypes == 1)\
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or (AES and AESGCM and ciphertypes == 2):
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cipherstats['AES Only'] += 1
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if CHACHA20:
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cipherstats['CHACHA20'] += 1
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if ciphertypes == 1:
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cipherstats['CHACHA20 Only'] += 1
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if DES3:
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cipherstats['3DES'] += 1
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if ciphertypes == 1:
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cipherstats['3DES Only'] += 1
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if CAMELLIA:
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cipherstats['CAMELLIA'] += 1
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if ciphertypes == 1:
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cipherstats['CAMELLIA Only'] += 1
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if RC4:
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cipherstats['RC4'] += 1
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if ciphertypes == 1:
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cipherstats['RC4 Only'] += 1
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if 'RC4' in results['ciphersuite'][0]['cipher']:
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if 'TLSv1.1' in results['ciphersuite'][0]['protocols'] or\
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'TLSv1.2' in results['ciphersuite'][0]['protocols']:
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cipherstats['RC4 forced in TLS1.1+'] += 1
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cipherstats['RC4 Preferred'] += 1
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for client_name in client_ciphers:
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if client_compat[client_name]:
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if 'ECDHE' in client_selected[client_name]:
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client_selected_cipherstats[client_name]['x:ECDHE'] += 1
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elif 'DHE' in client_selected[client_name]:
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client_selected_cipherstats[client_name]['x:DHE'] += 1
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else:
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client_selected_cipherstats[client_name]['x:kRSA'] += 1
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client_selected_cipherstats[client_name][client_selected[client_name]] += 1
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if client_RC4_Only[client_name] and ciphertypes != 1:
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cipherstats['x:' + client_name + ' RC4 Only'] += 1
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for cipher in temp_client_incompat[client_name]:
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client_RC4_Only_cipherstats[client_name][cipher] += 1
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if client_RC4_Pref[client_name] and not 'RC4' in results['ciphersuite'][0]['cipher']:
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cipherstats['x:' + client_name + ' RC4 Preferred'] += 1
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for cipher in temp_client_incompat[client_name]:
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client_RC4_preferred_cipherstats[client_name][cipher] += 1
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else:
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cipherstats['x:' + client_name + ' incompatible'] += 1
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for cipher in temp_client_incompat[client_name]:
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client_incompatible_cipherstats[client_name][cipher] += 1
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for cipher in tempcipherstats:
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cipherstats[cipher] += 1
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""" store handshake stats """
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if AECDH:
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handshakestats['AECDH'] += 1
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if ADH:
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handshakestats['ADH'] += 1
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if ECDHE:
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handshakestats['ECDHE'] += 1
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if DHE:
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handshakestats['DHE'] += 1
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if DHE and ECDHE:
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handshakestats['ECDHE and DHE'] += 1
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if ECDH:
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handshakestats['ECDH'] += 1
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if DH:
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handshakestats['DH'] += 1
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if RSA:
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handshakestats['RSA'] += 1
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""" store protocol stats """
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if SSL2:
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protocolstats['SSL2'] += 1
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if not SSL3 and not TLS1 and not TLS1_1 and not TLS1_2:
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protocolstats['SSL2 Only'] += 1
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if SSL3:
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protocolstats['SSL3'] += 1
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if not SSL2 and not TLS1 and not TLS1_1 and not TLS1_2:
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protocolstats['SSL3 Only'] += 1
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if TLS1:
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protocolstats['TLS1'] += 1
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if not SSL2 and not SSL3 and not TLS1_1 and not TLS1_2:
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protocolstats['TLS1 Only'] += 1
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if not SSL2 and (SSL3 or TLS1) and not TLS1_1 and not TLS1_2:
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protocolstats['SSL3 or TLS1 Only'] += 1
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if not SSL2 and not SSL3 and not TLS1:
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protocolstats['TLS1.1 or up Only'] += 1
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if TLS1_1:
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protocolstats['TLS1.1'] += 1
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if not SSL2 and not SSL3 and not TLS1 and not TLS1_2:
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protocolstats['TLS1.1 Only'] += 1
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if TLS1_2:
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protocolstats['TLS1.2'] += 1
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if not SSL2 and not SSL3 and not TLS1 and not TLS1_1:
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protocolstats['TLS1.2 Only'] += 1
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if TLS1_2 and not TLS1_1 and TLS1:
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protocolstats['TLS1.2, 1.0 but not 1.1'] += 1
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# for testing, break early
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#if total % 1999 == 0:
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# break
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""" The 'x:' + client_name + ' RC4 Preferred' counts only sites that
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effectively prefer RC4 when using given client, to make reporting more
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readable, sum it with sites that do that for all ciphers"""
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for client_name in client_ciphers:
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if 'x:' + client_name + ' RC4 Preferred' in cipherstats and 'RC4 Preferred' in cipherstats:
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cipherstats['x:' + client_name + ' RC4 Preferred'] += cipherstats['RC4 Preferred']
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print("SSL/TLS survey of %i websites from Alexa's top 1 million" % total)
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if report_untrused == False:
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print("Stats only from connections that did provide valid certificates")
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print("(or anonymous DH from servers that do also have valid certificate installed)\n")
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""" Display stats """
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print("\nSupported Ciphers Count Percent")
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print("-------------------------+---------+-------")
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for stat in sorted(cipherstats):
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percent = round(cipherstats[stat] / total * 100, 4)
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sys.stdout.write(stat.ljust(25) + " " + str(cipherstats[stat]).ljust(10) + str(percent).ljust(4) + "\n")
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print("\nCipher ordering Count Percent")
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print("-------------------------+---------+-------")
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for stat in sorted(cipherordering):
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percent = round(cipherordering[stat] / total * 100, 4)
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sys.stdout.write(stat.ljust(25) + " " + str(cipherordering[stat]).ljust(10) + str(percent).ljust(4) + "\n")
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print("\nCLIENT specific statistics\n")
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for client_name in client_ciphers:
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print("\n" + client_name + " selected ciphers Count Percent")
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print("-----------------------------+---------+------")
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for stat in sorted(client_selected_cipherstats[client_name]):
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percent = round(client_selected_cipherstats[client_name][stat] / total * 100, 4)
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sys.stdout.write(stat.ljust(30) + " " + str(client_selected_cipherstats[client_name][stat]).ljust(10) + str(percent).ljust(4) + "\n")
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print("\n" + client_name + " RC4 Only other ciphers Count Percent")
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print("-----------------------------+---------+------")
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for stat in sorted(client_RC4_Only_cipherstats[client_name]):
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percent = round(client_RC4_Only_cipherstats[client_name][stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(30) + " " + str(client_RC4_Only_cipherstats[client_name][stat]).ljust(10) + str(percent).ljust(4) + "\n")
|
|
|
|
print("\n" + client_name + " RC4 pref other ciphers Count Percent")
|
|
print("-----------------------------+---------+------")
|
|
for stat in sorted(client_RC4_preferred_cipherstats[client_name]):
|
|
percent = round(client_RC4_preferred_cipherstats[client_name][stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(30) + " " + str(client_RC4_preferred_cipherstats[client_name][stat]).ljust(10) + str(percent).ljust(4) + "\n")
|
|
|
|
print("\n" + client_name + " incompatible ciphers Count Percent")
|
|
print("-----------------------------+---------+------")
|
|
for stat in sorted(client_incompatible_cipherstats[client_name]):
|
|
percent = round(client_incompatible_cipherstats[client_name][stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(30) + " " + str(client_incompatible_cipherstats[client_name][stat]).ljust(10) + str(percent).ljust(4) + "\n")
|
|
|
|
print("\nSupported Handshakes Count Percent")
|
|
print("-------------------------+---------+-------")
|
|
for stat in sorted(handshakestats):
|
|
percent = round(handshakestats[stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(25) + " " + str(handshakestats[stat]).ljust(10) + str(percent).ljust(4) + "\n")
|
|
|
|
print("\nSupported PFS Count Percent PFS Percent")
|
|
print("-------------------------+---------+--------+-----------")
|
|
for stat in sorted(pfsstats):
|
|
percent = round(pfsstats[stat] / total * 100, 4)
|
|
pfspercent = 0
|
|
if "ECDH," in stat:
|
|
pfspercent = round(pfsstats[stat] / handshakestats['ECDHE'] * 100, 4)
|
|
elif "DH," in stat:
|
|
pfspercent = round(pfsstats[stat] / handshakestats['DHE'] * 100, 4)
|
|
sys.stdout.write(stat.ljust(25) + " " + str(pfsstats[stat]).ljust(10) + str(percent).ljust(9) + str(pfspercent) + "\n")
|
|
|
|
print("\nTLS session ticket hint Count Percent ")
|
|
print("-------------------------+---------+--------")
|
|
for stat in natural_sort(tickethint):
|
|
percent = round(tickethint[stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(25) + " " + str(tickethint[stat]).ljust(10) + str(percent).ljust(9) + "\n")
|
|
|
|
print("\nCertificate sig alg Count Percent ")
|
|
print("-------------------------+---------+--------")
|
|
for stat in sorted(sigalg):
|
|
percent = round(sigalg[stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(25) + " " + str(sigalg[stat]).ljust(10) + str(percent).ljust(9) + "\n")
|
|
|
|
print("\nCertificate key size Count Percent ")
|
|
print("-------------------------+---------+--------")
|
|
for stat in sorted(keysize):
|
|
percent = round(keysize[stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(25) + " " + str(keysize[stat]).ljust(10) + str(percent).ljust(9) + "\n")
|
|
|
|
sys.stdout.write("RSA/ECDSA Dual Stack".ljust(25) + " " + str(dsarsastack).ljust(10) + str(round(dsarsastack/total * 100, 4)) + "\n")
|
|
|
|
print("\nOCSP stapling Count Percent ")
|
|
print("-------------------------+---------+--------")
|
|
for stat in sorted(ocspstaple):
|
|
percent = round(ocspstaple[stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(25) + " " + str(ocspstaple[stat]).ljust(10) + str(percent).ljust(9) + "\n")
|
|
|
|
print("\nSupported Protocols Count Percent")
|
|
print("-------------------------+---------+-------")
|
|
for stat in sorted(protocolstats):
|
|
percent = round(protocolstats[stat] / total * 100, 4)
|
|
sys.stdout.write(stat.ljust(25) + " " + str(protocolstats[stat]).ljust(10) + str(percent).ljust(4) + "\n")
|