diff options
Diffstat (limited to 'pysnmp/proto/secmod/eso/priv/aesbase.py')
| -rw-r--r-- | pysnmp/proto/secmod/eso/priv/aesbase.py | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/pysnmp/proto/secmod/eso/priv/aesbase.py b/pysnmp/proto/secmod/eso/priv/aesbase.py index f67bdfe0..bd0a19ec 100644 --- a/pysnmp/proto/secmod/eso/priv/aesbase.py +++ b/pysnmp/proto/secmod/eso/priv/aesbase.py @@ -28,13 +28,14 @@ class AbstractAes(aes.Aes): def localizeKey(self, authProtocol, privKey, snmpEngineID): if authProtocol == hmacmd5.HmacMd5.serviceID: localPrivKey = localkey.localizeKeyMD5(privKey, snmpEngineID) - while ceil(self.keySize // len(localPrivKey)): + for count in range(1, int(ceil(self.keySize * 1.0 / len(localPrivKey)))): # noinspection PyDeprecation,PyCallingNonCallable - localPrivKey = localPrivKey + md5(localPrivKey).digest() + localPrivKey += md5(localPrivKey).digest() elif authProtocol == hmacsha.HmacSha.serviceID: localPrivKey = localkey.localizeKeySHA(privKey, snmpEngineID) - while ceil(self.keySize // len(localPrivKey)): - localPrivKey = localPrivKey + sha1(localPrivKey).digest() + # RFC mentions this algo generates 480bit key, but only up to 256 bits are used + for count in range(1, int(ceil(self.keySize * 1.0 / len(localPrivKey)))): + localPrivKey += sha1(localPrivKey).digest() else: raise error.ProtocolError( 'Unknown auth protocol %s' % (authProtocol,) |