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1. matoken (matoken@gnusocial.matoken.org)'s status on Thursday, 26-Dec-2019 17:28:15 JST matoken
   opensslでRSA768な鍵作れるってことで試してみたけど
   OpenSSH 8.1p1では実際利用しようとすると駄目だった
   $ openssl genrsa -out key.pem 768
   $ openssl rsa -pubout < key.pem > key.pub
   $ ssh -v -i ~/.ssh/key.pem localhost
   :
   debug1: Trying private key: /home/matoken/.ssh/key.pem
   Load key "/home/matoken/.ssh/key.pem": Invalid key length
   
   "Settable minimum RSA key sizes on the client end for legacy devices." https://lists.mindrot.org/pipermail/openssh-unix-dev/2019-December/038065.html