diff options
| author | Ilya Etingof <etingof@gmail.com> | 2017-12-30 15:55:13 +0100 |
|---|---|---|
| committer | Ilya Etingof <etingof@gmail.com> | 2017-12-30 15:55:13 +0100 |
| commit | 87dee74cacded799187d66107858364c332cc231 (patch) | |
| tree | 2bd7b9679fba48c632c9e61351b70c107b8e4cea /pysnmp/proto | |
| parent | 8b4c122b6781115635ca130900765bfc85af19a7 (diff) | |
| download | pysnmp-git-87dee74cacded799187d66107858364c332cc231.tar.gz | |
fixed 3DES key localization bug
Diffstat (limited to 'pysnmp/proto')
| -rw-r--r-- | pysnmp/proto/secmod/eso/priv/des3.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/pysnmp/proto/secmod/eso/priv/des3.py b/pysnmp/proto/secmod/eso/priv/des3.py index d5022089..97ba156d 100644 --- a/pysnmp/proto/secmod/eso/priv/des3.py +++ b/pysnmp/proto/secmod/eso/priv/des3.py @@ -68,6 +68,13 @@ class Des3(base.AbstractEncryptionService): 'Unknown auth protocol %s' % (authProtocol,) ) localPrivKey = localkey.localizeKey(privKey, snmpEngineID, hashAlgo) + + # now extend this key if too short by repeating steps that includes the hashPassphrase step + while len(localPrivKey) < self.keySize: + # this is the difference between reeder and bluementhal + newKey = localkey.hashPassphrase(localPrivKey, hashAlgo) + localPrivKey += localkey.localizeKey(newKey, snmpEngineID, hashAlgo) + return localPrivKey[:self.keySize] # 5.1.1.1 |