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#!/usr/bin/python
import urllib2
from BeautifulSoup import BeautifulSoup, ResultSet
file = urllib2.urlopen('https://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)
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