1. 問題現象

平日正常使用的 Workbench 在重啟電腦之后發現無法連接到對應的數據庫，workbench log顯示

SSH tunnel]: Authentication error opening SSH tunnel: Authentication error, unhandled exception caught in tunnel manager, please refer to logs for details

查閱完整 log 發現如下內容：

$ tail -f ~/.mysql/workbench/log/wb.log File "/usr/share/mysql-workbench/sshtunnel.py", line 303, in _connect_sshlook_for_keys=has_key, allow_agent=has_key, timeout=SSH_CONNECTION_TIMEOUT)File "/usr/lib/python2.7/dist-packages/paramiko/client.py", line 325, in connectt.start_client()File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 492, in start_clientraise e
NotImplementedError: Use module Crypto.Signature.pkcs1_15 instead14:17:14 [INF][     SSH tunnel]: TunnelManager.wait_connection authentication error: Authentication error, unhandled exception caught in tunnel manager, please refer to logs for details
14:17:14 [ERR][     SSH tunnel]: Authentication error opening SSH tunnel: Authentication error, unhandled exception caught in tunnel manager, please refer to logs for details
14:18:24 [INF][      WBContext]: Connection to XinJangCityWolMart cancelled by user: Tunnel connection cancelled

重點是

NotImplementedError: Use module Crypto.Signature.pkcs1_15 instead

使用 pip list 查詢后發現

$ pip2 list | grep crypto
asn1crypto (1.4.0)
cryptography (2.7)
pycrypto (2.6.1)
pycryptodome (3.11.0)

有個 pycryptodome 東東，可能是后面安裝其它工具的時候附帶安裝上的。
?

2. 解決方法

卸載 pycryptodome

sudo pip2 uninstall pycryptodome

然后重新打開 Workbench 連接數據庫恢復正常。

總結

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