def _getinfos_ssh_hostkey(spec):
"""Parse SSH host keys."""
infos = {}
data = utils.nmap_decode_data(spec['value'])
for hashtype in ['md5', 'sha1', 'sha256']:
infos[hashtype] = hashlib.new(hashtype, data).hexdigest()
data = utils.parse_ssh_key(data)
keytype = infos["algo"] = next(data).decode()
if keytype == "ssh-rsa":
try:
infos["exponent"], infos["modulus"] = (long(
utils.encode_hex(elt), 16) for elt in data)
except Exception:
utils.LOGGER.info("Cannot parse SSH host key for record %r",
spec,
exc_info=True)
else:
infos["bits"] = math.ceil(math.log(infos["modulus"], 2))
# convert integer to strings to prevent overflow errors
# (e.g., "MongoDB can only handle up to 8-byte ints")
for val in ["exponent", "modulus"]:
infos[val] = str(infos[val])
elif keytype == 'ecdsa-sha2-nistp256':
infos['bits'] = 256
elif keytype == 'ssh-ed25519':
infos['bits'] = len(next(data)) * 8
return {'infos': infos}
def data2key(data):
data = utils.parse_ssh_key(data)
_, exp, mod = (
next(data), # noqa: F841 (_)
long(utils.encode_hex(next(data)), 16),
long(utils.encode_hex(next(data)), 16))
return RSA.construct((mod, exp))
def _getinfos_ssh_hostkey(spec):
"""Parse SSH host keys."""
infos = {}
data = utils.nmap_decode_data(spec.get('fullvalue', spec['value']))
infos["md5hash"] = hashlib.md5(data).hexdigest()
infos["sha1hash"] = hashlib.sha1(data).hexdigest()
infos["sha256hash"] = hashlib.sha256(data).hexdigest()
data = utils.parse_ssh_key(data)
keytype = infos["algo"] = next(data).decode()
if keytype == "ssh-rsa":
try:
infos["exponent"], infos["modulus"] = (long(
utils.encode_hex(elt), 16) for elt in data)
except Exception:
utils.LOGGER.info("Cannot parse SSH host key for record %r",
spec,
exc_info=True)
else:
infos["bits"] = math.ceil(math.log(infos["modulus"], 2))
# convert integer to strings to prevent overflow errors
# (e.g., "MongoDB can only handle up to 8-byte ints")
for val in ["exponent", "modulus"]:
infos[val] = str(infos[val])
res = {'infos': infos}
_fix_infos_size(res)
return res
def _getinfos_ssh_hostkey(spec):
"""Parse SSH host keys."""
infos = {}
data = utils.nmap_decode_data(spec['value'])
for hashtype in ['md5', 'sha1', 'sha256']:
infos[hashtype] = hashlib.new(hashtype, data).hexdigest()
data = utils.parse_ssh_key(data)
keytype = infos["algo"] = next(data).decode()
if keytype == "ssh-rsa":
try:
infos["exponent"], infos["modulus"] = (
long(utils.encode_hex(elt), 16) for elt in data
)
except Exception:
utils.LOGGER.info("Cannot parse SSH host key for record %r", spec,
exc_info=True)
else:
infos["bits"] = math.ceil(math.log(infos["modulus"], 2))
# convert integer to strings to prevent overflow errors
# (e.g., "MongoDB can only handle up to 8-byte ints")
for val in ["exponent", "modulus"]:
infos[val] = str(infos[val])
elif keytype == 'ecdsa-sha2-nistp256':
infos['bits'] = 256
elif keytype == 'ssh-ed25519':
infos['bits'] = len(next(data)) * 8
return {'infos': infos}
def _getinfos_ssh_hostkey(spec):
"""Parse SSH host keys."""
infos = {}
data = utils.nmap_decode_data(spec['value'])
for hashtype in ['md5', 'sha1', 'sha256']:
infos[hashtype] = hashlib.new(hashtype, data).hexdigest()
info = utils.parse_ssh_key(data)
return {'infos': info}
def _getinfos_ssh_hostkey(spec):
"""Parse SSH host keys."""
infos = {}
data = utils.nmap_decode_data(spec["value"])
for hashtype in ["md5", "sha1", "sha256"]:
infos[hashtype] = hashlib.new(hashtype, data).hexdigest()
info = utils.parse_ssh_key(data)
return {"infos": info}
def data2key(data):
data = utils.parse_ssh_key(data)
_, exp, mod = (next(data), # noqa: F841 (_)
long(utils.encode_hex(next(data)), 16),
long(utils.encode_hex(next(data)), 16))
return RSA.construct((mod, exp))
