forked from rusticata/tls-parser
-
Notifications
You must be signed in to change notification settings - Fork 0
/
extract-iana-ciphers.py
executable file
·180 lines (162 loc) · 4.18 KB
/
extract-iana-ciphers.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
#!/usr/bin/python
import urllib2
from BeautifulSoup import BeautifulSoup, ResultSet
file = urllib2.urlopen('http://www.iana.org/assignments/tls-parameters/tls-parameters.xml')
data = file.read()
with open('tls-parameters.xml', 'wb') as myFile:
myFile.write(data)
file.close()
dom = BeautifulSoup(data)
#ciphersuites=dom.findAll ("registry")[4]
ciphersuites=dom.findAll (id="tls-parameters-4")
if isinstance(ciphersuites,ResultSet):
ciphersuites = ciphersuites.pop()
for i in ciphersuites.findAll ("record"):
value = "".join(i.value.contents)
desc = "".join (i.description.contents)
ignore_keywords = [
"Unassigned",
"Reserved",
]
f = filter(desc.startswith,ignore_keywords)
if len(f) > 0:
continue
if desc == "TLS_EMPTY_RENEGOTIATION_INFO_SCSV":
continue
elif desc == "TLS_FALLBACK_SCSV":
continue
rfc = "NONE"
if i.xref:
rfc_tmp = filter (lambda (var,val) : var == "data", i.xref.attrs)
if len (rfc_tmp) > 0:
# rfc = rfc_tmp[0][1][3:7]
rfc = rfc_tmp[0][1]
real_value = "".join (map (lambda x : "%2.2x" % (int (x, 16)), value.split (",")))
minver = 0x0300
maxver = 0xffff
if rfc == "rfc8446":
kxau = ["TLS13"]
encmac = desc[4:] # skip "TLS_"
elif rfc == "draft-camwinget-tls-ts13-macciphersuites":
kxau = ["TLS13"]
encmac = "NULL_" + desc.split("_")[1] # forge string like NULL_SHA256
else:
(_kxau, encmac) = desc.split("_WITH_")
kxau = _kxau.split ("_")[1:]
export = 0
if kxau[-1] == "EXPORT":
export = 1
maxver = 0x302
kxau = kxau[:-1]
if len (kxau) == 1:
kx = kxau[0]
au = kxau[0]
elif kxau[0] == "SRP":
kx = "_".join (kxau[0:1])
au = kx
if len (kxau) > 2:
au += "+" + "_".join (kxau[2:])
elif kxau[0] == "GOSTR341112":
# unsupported suites from https://datatracker.ietf.org/doc/draft-smyshlyaev-tls12-gost-suites/
continue
else:
kx, au = kxau
if au == "anon":
au = "NULL"
_encmac = encmac.split ("_")
hashfun = _encmac [-1]
_encstr = "_".join (_encmac [:-1])
_enc = _encmac [:-1]
if _encstr == "DES40_CBC":
enc = "DES"
encmode = "CBC"
encsize = 40
elif len (_enc) == 3 and _enc[1] == "CBC" and _enc[2] == "40":
enc = _enc[0]
encmode = "CBC"
encsize = 40
elif _encstr == "DES_CBC":
enc = "DES"
encmode = "CBC"
encsize = 56
elif _encstr == "IDEA_CBC":
enc = "IDEA"
encmode = "CBC"
encsize = 128
elif _encstr == "3DES_EDE_CBC":
enc = "3DES"
encmode = "CBC"
encsize = 168
elif _encstr == "NULL":
enc = "NULL"
encmode = ""
encsize = 0
elif _encstr == "SEED_CBC":
enc = "SEED"
encmode = "CBC"
encsize = 128
elif _encstr == "CHACHA20_POLY1305":
enc = "CHACHA20_POLY1305"
encmode = "CBC"
encsize = 256
elif len (_enc) == 2:
enc = _enc[0]
encmode = ""
encsize = int (_enc[1])
else:
enc = _enc[0]
encmode = _enc[2]
encsize = int (_enc[1])
prf = "DEFAULT"
prfsize = 0
# fix crap from recent changes
if hashfun == "8":
hashfun = "_".join([encmode,hashfun])
encmode = ""
if hashfun == "NULL":
mac = "NULL"
macsize = 0
elif hashfun == "MD5":
mac = "HMAC-MD5"
macsize = 128
elif hashfun == "SHA":
mac = "HMAC-SHA1"
macsize = 160
elif hashfun == "SHA256":
mac = "HMAC-SHA256"
macsize = 256
prf = "SHA256"
prfsize = 256
minver = 0x303
elif hashfun == "SHA384":
mac = "HMAC-SHA384"
macsize = 384
prf = "SHA384"
prfsize = 384
minver = 0x303
elif hashfun == "CCM":
#print encmode
#mac = "CCM"
#macsize = 0
minver = 0x303
encmode = "CCM"
elif hashfun == "CCM_8":
#print encmode
#mac = "CCM_8"
#macsize = 0
minver = 0x303
encmode = "CCM"
else:
print desc
print encmac
print hashfun
raise "Unsupported."
if encmode == "GCM" or encmode == "CCM":
mac = "AEAD"
macsize = encsize
minver = 0x303
if _encstr == "CHACHA20_POLY1305":
mac = "AEAD"
macsize = encsize
minver = 0x303
print "%s:%s:%s:%s:%s:%s:%d:%s:%d:%s:%d:%s:%d:%4.4x:%4.4x" % (real_value, desc, kx, au, enc, encmode, encsize, mac, macsize, prf, prfsize, rfc, export, minver, maxver)