/usr/lib/python3/dist-packages/pysnmp/proto/secmod/eso/priv/aes192.py is in python3-pysnmp4 4.2.5-1.
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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 | # AES 192/256 bit encryption (Internet draft)
# http://tools.ietf.org/html/draft-blumenthal-aes-usm-04
from pysnmp.proto.secmod.rfc3826.priv import aes
from pysnmp.proto.secmod.rfc3414.auth import hmacmd5, hmacsha
from pysnmp.proto.secmod.rfc3414 import localkey
from pysnmp.proto import error
class Aes192(aes.Aes):
serviceID = (1, 3, 6, 1, 4, 1, 9, 12, 6, 1, 1) # cusmAESCfb192PrivProtocol
keySize = 24
# 3.1.2.1
def localizeKey(self, authProtocol, privKey, snmpEngineID):
if authProtocol == hmacmd5.HmacMd5.serviceID:
localPrivKey = localkey.localizeKeyMD5(privKey, snmpEngineID)
localPrivKey = localPrivKey + localkey.localizeKeyMD5(
localPrivKey, snmpEngineID
)
elif authProtocol == hmacsha.HmacSha.serviceID:
localPrivKey = localkey.localizeKeySHA(privKey, snmpEngineID)
localPrivKey = localPrivKey + localkey.localizeKeySHA(
localPrivKey, snmpEngineID
)
else:
raise error.ProtocolError(
'Unknown auth protocol %s' % (authProtocol,)
)
return localPrivKey[:24]
|