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Diffstat (limited to 'paramiko/transport.py')
| -rw-r--r-- | paramiko/transport.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/paramiko/transport.py b/paramiko/transport.py index 773a8769..bca4d37e 100644 --- a/paramiko/transport.py +++ b/paramiko/transport.py @@ -1537,6 +1537,13 @@ class Transport (threading.Thread, ClosingContextManager): # Fallback to SHA1 for kex engines that fail to specify a hex # algorithm, or for e.g. transport tests that don't run kexinit. hash_algo = getattr(self.kex_engine, 'hash_algo', None) + hash_select_msg = "kex engine %s specified hash_algo %r" % (self.kex_engine.__class__.__name__, hash_algo) + if hash_algo is None: + hash_algo = sha1 + hash_select_msg += ", falling back to sha1" + if not hasattr(self, '_logged_hash_selection'): + self._log(DEBUG, hash_select_msg) + setattr(self, '_logged_hash_selection', True) out = sofar = hash_algo(m.asbytes()).digest() while len(out) < nbytes: m = Message() |